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Prognostic Table of Savonitto et al for a Patient with Acute Coronary Syndrome Based on the Admission Electrocardiogram and Serum Creatine Kinase Concentration

Clinical Prediction Rule of Silver et al for Predicting a Preserved Left Ventricular Ejection Fraction After Myocardial Infarction

Risk Factors of Barrebes et al for In Hospital Mortality After a First Non-ST Segment Elevation Acute Myocardial Infarction

Extent of Myocardial Injury Based on the Number of ECG Leads Showing ST Segment Elevation

Analysis of Holmvang et al of the Admission ECG in Patients with a Non-ST Segment Elevation Acute Coronary Syndrome (ACS)

Risk Assessment Scheme of Ellis et al for Outcome After Percutaneous Coronary Intervention (PCI)

CART ECG Algorithms of Lehmann et al for Identifying the Occluded Artery in a Patient with an Acute Myocardial Infarction

Prognostic Model of Skali et al Using Echocardiography 1 Year After a Myocardial Infarction

Predictors of Cheneau et al for Subacute Stent Thrombosis Identified with Intravascular Ultrasound (IVUS)

The Ratio of T to QRS Amplitudes for Distinguishing an Anterior Myocardial Infarction from a Left Ventricular Aneurysm

Criteria of Owens and O'Brien for a Hypotension-Induced Ischemic (HII) Event

Algorithm of Tierala et al for Predicting the Culprit Artery in Acute Inferior ST-Elevation Myocardial Infarction (STEMI)

Screening Criteria of Anderson et al for Separating Anterior and Inferior Myocardial Infarcts

Electrocardiographic Findings of Nikus et al Associated with Left Main or Severe Triple Vessel Disease in a Patient with Acute Coronary Syndrome

Fragmented Wide QRS

Predictors of Kosuge et al for Left Main or 3-Vessel Coronary Artery Disease in a Patient with Non-ST-Segment Elevation Acute Coronary Syndrome

Criteria of Warner et al for an Acute Inferior Myocardial Infarction

Tetrad of Wong et al for Isolated Right Atrial Infarction

Criteria of Liu et al for Atrial Infarction

Wellens Syndrome (Left Anterior Descending Coronary T Wave Syndrome)

ECG Changes of Kurisu et al Associated with 30-Day Mortality in a Patient with Acute Myocardial Infarction Following Occlusion of the Left Main Coronary Artery (LMCA)

Predictive Instrument of Wei et al for Evaluating a Patient in the Emergency Room with Chest Pain

ECG Predictors of Engelen et al for the Site of Occlusion in the Left Anterior Descending (LAD) Artery in a Patient with an Anterior Acute Myocardial Infarction

Echocardiographic Risk Factors of Carasso for 30-Day Mortality Following an Acute Myocardial Infarction (AMI)

ECG Criteria of Towbin et al for Acute Myocardial Infarction in a Pediatric Patient

Criteria of de Luna et al for Pathologic R Waves in Leads V1 and V2 Associated with a Lateral Myocardial Infarction

ECG Findings of Kurisu et al Associated with Mortality Following Acute Myocardial Infarction Associated with the Left Main Coronary Artery

iMUTE Score of Xu et al for Intravascular Ultrasound (IVUS) Study Following Placement of a Drug-Eluting Stent (DES)

Prognostic Echocardiographic Measures of Iwahashi et al at Two Weeks Following a First Time ST Elevation Myocardial Infarction

Thrombolytic Predictive Instrument of Selker et al for Cardiac Arrest After Acute Myocardial Infarction

Thrombolytic Predictive Instrument of Selker et al for 30-Day Mortality After Acute Myocardial Infarction

Thrombolytic Predictive Instrument of Selker et al for 1 Year Mortality After Acute Myocardial Infarction

Model of Schroder et al for Prediction of Mortality Risk Using ECG Findings 90 Minutes After Thrombolysis

Noninvasive Scoring System of Bossaert et al for Assessment of Reperfusion After Thrombolysis

Method of Bossaert et al for Assessment of Reperfusion Based on Summation of the Total ST Segment Elevation

Criteria of van't Hof for Normalization of ST Segment Elevation After Primary Angioplasty in a Patient with Acute Myocardial Infarction

Criteria of Johanson et al for ST-Segment Resolution Following an Acute Myocardial Infarction

Romhilt-Estes Point Scoring System for Left Ventricular Hypertrophy

Criteria of Sokolow and Lyon for Left Ventricular Hypertrophy

Criteria of Casale et al for Left Ventricular Hypertrophy (Cornell Criteria)

Criteria of Klein et al for Left Ventricular Hypertrophy in the Presence of Left Bundle Branch Block

Cornell/Strain (C/S) Index of Verdecchia et al for Identifying Left Ventricular Hyperplasia in a Hypertensive Patient

Perugia Score for Detecting Left Ventricular Hypertrophy in a Patient with Essential Hypertension

Criteria of Gubner and Ungerleider for Left Ventricular Hypertrophy

Cornell Product (Cornell Voltage Product)

Equation of Norman and Levy for Adjusting the Cornell Voltage

Equation of Norman and Levy for Adjusting the Cornell Voltage Product

Butler-Leggett Criteria for Right Ventricular Hypertrophy due to Mitral Stenosis

Criteria of Sokolow and Lyon for Right Ventricular Hypertrophy

Criteria of the World Health Organization (WHO) for Right Ventricular Hypertrophy

Criteria of Louridas et al for Right Ventricular Hypertrophy

Criteria for Left Atrial Enlargement

Criteria for Right Atrial Enlargement

Criteria for Bilateral Atrial (Bi-Atrial) Enlargement

Equations of Birkbeck et al for Estimating Left Atrial Volume Using Features of the P Wave in Lead II

Equation of Ariyarajah et al for Estimating Left Atrial Volume Based on P Wave Duration

Method of Brugada et al for the Diagnosis of Regular Tachycardia with a Wide QRS Complex

Algorithm of Vereckei et al for Evaluating a Patient with Wide QRS Complex Tachycardia

ECG Changes in Cardiac Amyloidosis

Doppler Index of Tei et al for Cardiac Amyloidosis and Other Cardiomyopathies

ECG and Imaging Findings of Shah et al in Cardiac Amyloidosis

Score of Bellavia et al for Predicting Survival for a Patient with Primary Systemic (AL) Amyloidosis

Lown's System for Grading Ventricular Premature Beats

Classification By Myerburg et al of Ventricular Arrhythmias Based on Frequency and Form

Arrhythmia-Severity Index of Mason and Winkle for a Patient with a Ventricular Tachyarrhythmia

Criteria of Velebit et al for Drug-Induced Aggravation of Ventricular Arrhythmias

Algorithm of Miller et al for Identifying the Endocardial Site of Origin for Infarct-Associated Ventricular Tachycardia

Peak Deflection Index (PDI) for Identifying a Patient with Outflow Tract Ventricular Tachycardia Who Is Likely to Fail Radiofrequency Catheter Ablation

Prognostic Factors of Song et al for Pediatric Ventricular Tachycardia

Electrocardiographic Features of a Pericardial Effusion

Stages of Electrocardiographic (ECG) Evolution in a Patient with Acute Pericarditis

Criteria of Bommer et al for Detecting Pericardial Tamponade Following Cardiac Surgery

Echocardiographic Grading the Size of a Pericardial Effusion

Distinguishing Ascites from Pericardial Fluid on Echocardiography

The Algorithm of Milstein et al for Localizing Accessory Pathways

Criteria for Emphysema of Selvester and Rubin

Electrocardiographic Pentalogy of Wasserburger et al for Pulmonary Emphysema

ECG Score of Daniel et al for Cardiac Stress After Massive Pulmonary Embolism

Electrocardiographic Findings of Bossone et al with Prognostic Significance for a Patient with Primary Pulmonary Hypertension (PPH)

Echocardiographic Predictors of Raymond et al for a Poor Prognosis for a Patient with Primary Pulmonary Hypertension

Model of Bircan et al for Identifying a Patient with a Severe Pulmonary Embolism

Equation of Steckelberg et al for Predicting Mean Pulmonary Artery Pressure (MPAP) from Peak Pulmonary Artery Systolic Pressure (PASP)

Calculating the Limb Leads When Only Two Are Known

Algorithm for Determining the Location of AV Block

Grading Atrioventricular Block

Electrocardiographic Features of Right Bundle Branch Block (RBBB)

Electrocardiographic Features of Left Bundle Branch Block (LBBB)

Electrocardiographic Features of a Left Anterior-Superior Fascicular Block

Electrocardiographic Features of a Left Posterior-Inferior Fascicular Block

Causes of Congenital Complete Atrioventricular Block (CCAVB)

Risk Factors of Berdajs et al for Atrioventricular Block Following Mitral Valve Replacement and Mitral Valve Annuloplasty

Evaluation of a Patient with Incidental Bundle Branch Block (BBB)

The QRS Electrical Axis in the Frontal Plane

The QRS Electrical Axis in the Horizontal Plane

P Wave Initial and Terminal Force

ECG Diagnosis of Tricyclic Antidepressant Cardiotoxicity

ECG Changes in Carbon Monoxide (CO) Poisoning

ECG Changes in Arsenic Poisoning

ECG Changes Associated with Arsenic Trioxide Therapy

Calculating the Vectorcardiography Leads from the 12 Lead ECG in Adults Using the Matrix Inversion (Inverse Dower) Technique

Calculating the Vectorcardiography Leads from the 12 Lead ECG in Pediatric Patients Using the Matrix Inversion (Inverse Dower) Technique

Severity of Valve Stenosis (Modified Bernoulli Equation) by Doppler Echocardiography

Aortic Valve Area in Stenosis by Doppler Echocardiography

Mitral Valve Area in Stenosis by Doppler Echocardiography

Estimation of the Right Ventricular Systolic Pressure in Patients with Tricuspid Regurgitation Using Doppler Echocardiography

Determining the Severity of Mitral Stenosis Using Doppler Echocardiography

Classification of Rao et al for Pulmonic Valve Insufficiency Based on Doppler Echocardiography

Mitral Regurgitation Index (MRI) of Thomas et al for Evaluating the Severity of Mitral Regurgitation

Echocardiographic Score of Shiina et al for Evaluating a Patient with Ebstein's Anomaly of the Tricuspid Valve

Criteria of Greaves et al for the Use of Transthoracic Echocardiography to Exclude Infective Endocarditis

Echocardiographic Criteria of Zoghbi et al for Grading Native Pulmonic Valve Regurgitation

Echocardiographic Criteria of Zoghbi et al for Grading Native Mitral Valve Regurgitation

Semiquantitative Valvular Calcification Score of Schaefer et al

Tricuspid Regurgitation to Right Atrial Area Ratio (TR/RA)

Estimating the Pulmonary Artery Systolic Pressure (PASP) from the Tricuspid Regurgitant (TR) Jet Velocity on Echocardiography

Risk Factors of Morris et al for an Elevated Tricuspid Valve Regurgitant Jet Velocity in a Patient with Thalassemia

Predicting the Pulmonary Regurgitation Fraction in a Patient with Surgically-Repaired Tetralogy of Fallot Using the PRIME Method of Festa et al.

Prognostic Factors of Arias et al for a Patient with Moderate to Severe Organic Mitral Regurgitation

Estimating Stroke Volume and Cardiac Output Based on Doppler Echocardiography of the Proximal Aorta

Equation of Popp and Harrison from Determining Stroke Volume By Doppler Echocardiography of the Left Ventricle

Contraindications to Transesophageal Echocardiography

Indications for Transesophageal Echocardiography in the Evaluation of the Aorta in Trauma Patients

Grading a Patent Foramen Ovale (PFO) Using Contrast Microbubbles

Pulsed Wave Doppler Indices in Transesophageal Echocardiography Associated with the Pulmonary Artery Occlusion Pressure in a Ventilated Patient

Doppler Tissue Imaging and Color Doppler Indices in Transesophageal Echocardiography Associated with the Pulmonary Artery Occlusion Pressure in a Ventilated Patient

Effect of Hypokalemia and Hyperkalemia on the Electrocardiogram

Effect of Hypocalcemia on the Electrocardiogram

Effect of Hypercalcemia on the Electrocardiogram

Effect of Hypomagnesemia on the Electrocardiogram

Effects of Mixed Electrolyte Changes on the Electrocardiogram

Coronary Calcium Score of Agatston et al Using Electron Beam Computed Tomography

Noninvasive Index (NI) of Schmermund et al for Identification of Patients with Obstructive Three Vessel and/or Left Main Coronary Artery Disease

Detection of Anomalous Origin of a Coronary Artery in a Young Athlete with Syncope Using Transthoracic Echocardiography

Veterans Affairs Prognostic Score

Duke Treadmill Exercise Test of Mark et al

The Long Beach and Palo Alto Veteran Administration (LB-PA VA) Equation for Probability of Coronary Artery Disease

Equation of Detrano et al for Predicting Coronary Artery Disease in Patients Having Exercise Testing

The Chronotropic Index

Logistic Prediction Model of Morise et al from 1996 for Probability of Coronary Artery Disease

The ST Segment to Heart Rate Index (ST/HR Index) or the Heart Rate-Adjusted ST

Prognostic Score of Shetler et al Using Heart Rate Recovery After Exercise Testing

Simple Treadmill Score of Raxwal et al for Diagnosing Coronary Artery Disease in Men

Model of Lee et al for Predicting Left Main Coronary Artery Disease in a Patient Undergoing Exercise Testing

Model of Pruvost et al for Predicting Coronary Artery Disease in a Patient Undergoing Exercise Testing

Logistic Prediction Model of Robert et al for Probability of Coronary Artery Disease in a Woman Undergoing Exercise Testing

Score of Marwick et al for Predicting the Risk of a Major Cardiovascular Event After a Dobutamine Stress Echocardiogram

Stress Recovery Index (SRI) for Identifying Multivessel Coronary Artery Disease During Exercise Testing Following an Acute Myocardial Infarction

V-Slope Method of Beaver et al for Identifying the Anaerobic Threshold During Exercise Testing

Prognostic Factors of Gitt et al for Patients with Heart Failure Identified During Exercise Testing

Heart Rate Profile of Joucen et al for Identifying a Patient at Risk for Sudden Death

Model of Lauer et at for Long-Term Survival After Exercise Treadmill Testing in a Patient with a Normal ECG and Suspected Coronary Artery Disease

Exercise-Induced Ventricular Arrhythmias (EIVA)

Hump Sign in the ST-Segment During Exercise Testing

Appropriateness of Stress Echocardiography in a Patient with a Prior Stress Imaging or Coronary Angiogram Test Result

Appropriateness of Stress Echocardiography in a Patient Postrevascularization

Prognostic Signifcance of Wall Motion Abnormalities (WMA) During Exercise Echocardiography Based on the Study of Elhendy et al.

Bazett’s Formula for Correction of the Q-T Interval for Heart Rate (QTc)

QT Dispersion

Formula of Hodges et al for Correction of the Q-T Interval for Heart Rate (QTm)

Relative Change in QT Dispersion

The 1985 Diagnostic Criteria of Schwartz for the Long QT Syndrome

The 1993 Diagnostic Criteria of Schwartz et al for the Long QT Syndrome

Risk Stratification Scheme of Priori et al for Patients with the Long QT Syndrome

Model of Hobbs et al for Aborted Cardiac Arrest or Sudden Cardiac Death in an Adolescent with the Long QT Syndrome

Risk Factors for Torsade de Pointes in Patients Taking a Drug That Prolongs the QT Interval

Algorithm of Krantz et al for Managing a Patient Taking Methadone with a Prolonged QTc Interval

Criteria of Shah for Identifying a Drug That May Cause Drug-Induced Prolongation of the QT Interval

Recommendations of Tisdale for Avoiding Drug-Induced Torsades de Pointes

Risk Stratification in Patients with Brugada Syndrome

Short QT Syndrome

Risk Factors of Elkins et al for Cardiac Morbidity After Transient Ischemic Attack (TIA) Based on ECG Changes

Identifying a Patient with a History of Stroke Who Is at Risk for Cardiac Death Using a Long QTc

Electrocardiographic Changes in Subarachnoid Hemorrhage

Electrocardiographic Changes Associated with Arrhythmic Syncope

Indications for a Permanent Implantable Pacemaker in an Adult with Acquired Atrioventricular Block

The Pacemaker Syndrome

Risk Score of Koplan et al for Needing a Permanent Pacemaker After Cardiac Valve Surgery

NASPE/BPEG Codes for Implantable Defibrillators

NASPE/BPEG Generic (NBG) Pacemaker Code

Study of Bode-Schnurbus et al Using QRS Duration to Predict Mortality Risk in a Patient with an ICD and Heart Failure

Algorithm of Ammann et al for Detecting the Loss of Left Ventricular Capture During Cardiac Resynchronization Therapy

Twiddler Syndrome

Conditions Associated with an Appropriate or Inappropriate Shock from an Implantable Cardioverter-Defibrillator

Algorithm of Gehi et al for Management of a Patient Who Has Had Discharge of an Implantable Cardioverter-Defibrillator (ICD)

Electrical Storm in a Patient with an Implantable Cardioverter-Defibrillator (ICD)

Prognostic Model of Pacifico et al for a Patient with an Implantable Cardioverter-Defibrillator (ICD)

Recommendations of Josephson for Cardiac Pacing in a Patient with an Intraventricular Conduction Disturbance

Recommendations of the Heart Rhythm Task Force for Handling the Notification or Recall of an Artificial Pacemaker or ICD Device

Indications of Maron et al for Placing an Implantable Cardioverter-Defibrillator (ICD) in a Patient with Hypertrophic Cardiomyopathy

Triboelectricity (Static Electricity)-Induced Tachycardia in a Patient with a Pacemaker

Echocardiographic Severity Score of Moller et al for Carcinoid Heart Disease

TIMI Grades of Coronary Artery Perfusion

Grade of Collateral Circulation Demonstrated on Angiography Using the TIMI IIIA Trial Criteria

Grade of Ulceration Demonstrated on Angiography Using the TIMI IIIA Trial Criteria

Grades of Thrombus Demonstrated on Angiography Using the TIMI IIIA Trial Criteria

Grades of Myocardial Blushing Demonstrated on Angiography Using the Zwolle Myocardial Infarction Study Group Criteria

The Angiographic Perfusion Score of Gibson et al in Patients with Acute Myocardial Infarction Treated by a Percutaneous Coronary Intervention (PCI)

TIMI Myocardial Perfusion Grades

Plaque Ulceration Index (UI)

Categories of the ACC, AHA and ESC for Atrial Fibrillation

Risk Factors for Atrial Flutter

Electrocardiographic Features of Atrial Flutter

Risk Factors for Atrial Fibrillation

Electrocardiographic Features of Atrial Fibrillation

Risk Factors for Sinus Tachycardia

Electrocardiographic Features of Sinus Tachycardia

Risk Factors for Paroxysmal Atrial Tachycardia (PAT)

Electrocardiographic Features of Paroxysmal Atrial Tachycardia (PAT)

Risk Factors for the Tachycardia-Bradycardia Syndrome (Sinoatrial Disorder, Sick Sinus Syndrome)

Electrocardiographic Features of the Tachycardia-Bradycardia Syndrome (Sinoatrial Disorder, Sick Sinus Syndrome)

Equation of Mandel et al for Spontaneous Sinus Cycle Length and Maximum Sinus Node Recovery Time

Algorithm of Delacretaz for Long-Term Management of Supraventricular Tachycardia

Alcohol-Induced Rhythm Disorders (Holiday Heart Syndrome)

Indications for Catheter Ablation in a Patient with Atrial Fibrillation

Potential Complications of Catheter Ablation for Atrial Fibrillation

European Heart Rate Association (EHRA) Classification for Atrial Fibrillation Symptom Severity

Risk Score of Schnabel et al for Atrial Fibrillation from the Framingham Heart Study

HATCH Score of de Vos et al for Predicting Progression from Paroxysmal to Persistent Atrial Fibrillation (HAT2CH2 Score)

Predictors of Arriagada et al for Arrhythmia Recurrence in a Patient with Lone Atrial Fibrillation

Model of Barrett et al for Predicting the Risk of 30-Day Adverse Event in a Patient with Symptomatic Atrial Fibrillation

Measures of Dagres and Anastasiou-Nana for Reducing the Risk of Atrio-Esophageal Fistula Following Catheter Ablation of Atrial Fibrillation

Risk Factors of Sheldon et al for Atrial Fibrillation During Dobutamine Stress Echocardiography

Echocardiographic Predictors of Ayirala et al for Thrombus Formation in the Left Atrial Appendage of a Patient with Atrial Fibrillation

Algorithm of Shalganov et al for the Chamber of Origin for Atrial Tachycardia: Macroreentry Tachycardia

Algorithm of Shalganov et al for the Chamber of Origin for Atrial Tachycardia: Focal Tachycardia

Equation of Nagueh et al for Determining Left Ventricular Filling Pressure in Atrial Fibrillation Using Doppler Echocardiography

Indications of Whinnett et al for Referring a Patient with Supraventricular Tachycardia to a Cardiac Electrophysiologist

Diagnostic Tree of Whinnett et al for a Patient with Supraventricular Tachycardia (SVT) and a Narrow QRS

Arterial Distensibility

Arterial Stiffness Index

Classification of Schaefer et al for Shape of the Aortic Root

Method of Jo et al for Measuring the Thoracic Aortic Pulse Wave Velocity (PWV) in a Pediatric Patient

Method of Devereux and Reichek for Echocardiographic Determination of Left Ventricular Mass

Score of Dodd et al for Echocardiographic Changes in a Patient with Acute Cardiac Allograft Rejection

Classification of Coronary Artery Disease in a Cardiac Transplant Recipient Using Intravascular Ultrasonography

Distinction of Hypertrophic Cardiomyopathy from Athletic Heart Based on Echocardiographic and Electrocardiographic Features

Echocardiographic Point Score of Wigle et al for a Patient with Hypertrophic Cardiomyopathy

Algorithm of Kliger et al for Evaluating a Patient with Heart Failure and a Normal Left Ventricular Ejection Fraction

Electrocardiographic Findings of Groh et al Associated with Sudden Death in a Patient with Myotonic Dystrophy Type 1

Electrocardiographic Findings in a Patient with Duchenne's Muscular Dystrophy

ECG Score of Ostman-Smith et al for Predicting Risk of Sudden Death in a Patient with Hypertrophic Cardiomyopathy

Electrocardiographic Criteria of Kosuge et al for Takotsubo Cardiomyopathy

Echocardiographic Criteria of Jenni et al for Isolated Ventricular Non-Compaction (IVNC)

Risk Factors of Salles et al for Mortality in Chagas’ Cardiomyopathy Based on Electrocardiographic and Echocardiographic Parameters

T-Wave Axis Deviation and Prognosis in Chagas' Cardiomyopathy

Electrocardiographic Changes Seen in Hypothermia

Electrocardiographic Changes Reported by Rolfast et al for Patients Undergoing Therapeutic Hypothermia

Electrocardiographic Changes in Hypothyroidism (Myxedema)

Electrocardiographic Changes in Hyperthyroidism (Thyrotoxicosis)

Changes in the Electrocardiogram Associated with Anorexia Nervosa or Bulimia

Grading the Severity of Mitral Regurgitation on Left Ventricular Angiography

Indications and Contraindications for Percutaneous Electrophysiologic Studies

Complications Associated with Percutaneous Electrophysiologic Studies

Criteria of Munger for an Abnormal Electrophysiologic Study in a Patient with Syncope

Decision Algorithm of Schwartz and Bourassa for a Patient with Chest Pain and a Normal Coronary Angiogram (Syndrome X)

Clinical and Diagnostic Features of Syndrome X

Risk Factors of Rautaharju et al for Cardiovascular Mortality in a Postmenopausal Woman

Grades of Webster et al for Right-to-Left Shunt Using Doppler Echocardiography

Risk Score of Sharma et al for Evaluating a Patient Prior to Renal Transplantation

Appropriateness of Stress Echocardiography for Risk Assessment Prior to Noncardiac Surgery

Detection of a Left Ventricular Thrombus Following Surgery Using Transthoracic Echocardiography (TTE)

Transmitral Flow Pattern and Other Factors Used by Xie et al for Predicting the Survival of a Patient with Congestive Heart Failure

ECG Triad of Goldberger for Congestive Heart Failure

Equation of Henry et al for Predicting Left Ventricular Internal Dimension During Diastole

Equation of Khouri et al for Predicting Left Ventricular Internal Dimension During Diastole

Calculating the Volume of the Left Atrium as an Ellipsoid

Devices That Can Cause Artifacts in an ECG

Complications Caused By Artifacts in an Electrocardiogram (ECG)

Changes in the Electrocardiogram Associated with Lead Misplacement

Pseudoflutter Waves Associated with Rhythmic Patient Movements

Stokes Adams Attack in a Patient with Bradycardia and Syncope

Changes in an Electrocardiogram After Being Struck by Lightning

Changes in the Electrocardiogram Associated with a Metastatic Carcinoma to the Heart

Criteria for Correct Placement of a Central Venous Catheter Based on the Electrocardiogram (ECG)

Eccentricity Index of Ryan et al for Distinguishing Right Ventricular Volume Overload from Right Ventricular Pressure Overload

Causes of a Low Voltage QRS Complex

Low Voltage Electrocardiogram in Ascites

Criteria of Eisenberg et al for Low Voltage Electrocardiogram

Ratio of the T Wave Peak to End Interval to the QT Interval

Changes in the T Wave Reflecting Subendocardial Ischemia During a Hypertensive Emergency

Causes of Giant Inverted T Waves

Model of Salemi et al to Predict Outcome for a Patient with Biventricular Endomyocardial Fibrosis (EMF) Using Peak Late Diastolic Mitral Annular Velocities

ECG Sign of de Winter et al for Proximal Occlusion of the Left Anterior Descending (LAD) Coronary Artery

Intravascular Ultrasound (IVUS) Predictors of Hong et al for Angiographic Restenosis of a Sirolimus-Eluting Stent

Ostial Plaque Distribution on Intravascular Ultrasound (IVUS) and Side Branch Occlusion in Bifurcation Lesions After Percutaneous Coronary Intervention (PCI)

Changes in the ST Segment and T Wave of the Resting Electrocardiogram as Predictors of Cardiovascular Mortality

Acute Ischemia Index of Hassell et al and the Percentage of the Myocardial Area at Risk Following an Inferior Myocardial Infarction

Chronic Salvage Index of Hassell et al Following an Inferior Myocardial Infarction

Algorithm of Valles et al for Identifying Epicardial Ventricular Tachycardia in a Patient with a Nonischemic Cardiomyopathy

Grades of Aviram et al for Reflux of Contrast into the Inferior Vena Cava (IVC) in a Patient with Acute Pulmonary Embolism

CT Predictors of Kang et al for Adverse Outcome in a Patient with a Pulmonary Embolism

Framingham Formula for Correction of the Q-T Interval for Heart Rate (QTc)

Algorithm of Ploux et al for Identifying the Left Ventricular Lead Position in a Patient with a Cardiac Resynchronization System

Grades of Rentrop et al for Collateral Channel Filling from the Contralateral Artery

Coronary Score of Leaman et al for a Patient with Coronary Artery Atherosclerosis (CAD)

SYNTAX Score: Basic Score for an Arteriosclerotic Lesion Based on Location in a Coronary Artery

Classifying a Bifurcation Lesion in a Coronary Artery: SYNTAX and Medina Designations

SYNTAX Score: Points for a Lesion at a Bifurcation or Trifurcation

SYNTAX Score: Extra Points for Specific Findings

Total SYNTAX Score for All of the Lesions Identified on Coronary Angiography

ECG Changes Associated with Noonan Syndrome

Teichholz's Formula for Left Ventricular Volume

Equation of Dumesnil et al for Estimating the Left Ventricular Ejection Fraction (LVEF)

Left Atrial Function Index (LAFI) of Thomas et al

Verapamil-Sensitive Idiopathic Left Ventricular Tachycardia (Belhassen Tachycardia)

Arrhythmia Scoring Systems of Curtis and Walker: Score A

Arrhythmia Scoring Systems of Curtis and Walker: Score B

Arrhythmia Scoring Systems of Curtis and Walker: Score C

Arrhythmia Scoring Systems of Curtis and Walker: Score D

Arrhythmia Scoring Systems of Curtis and Walker: Score E

Arrhythmia Scoring Systems of Curtis and Walker: Score F

Arrhythmia Scoring Systems of Curtis and Walker: Score G

Cardiac Catheterization-induced Complete Heart Block (CIHB) in a Pediatric Patient with Congenital Heart Disease

Pretest Score of Morise et al for Probability of Coronary Artery Disease Prior to Exercise Testing

Exercise Test Score of Morise et al for Risk of Coronary Artery Disease in Women

Exercise Test Score of Morise et al for Risk of Coronary Artery Disease in Men

Phrenic Nerve Injury (PNI) Following Catheter Ablation for Atrial Fibrillation (AF)

Pulmonary Vein Stenosis Following Catheter Ablation for Atrial Fibrillation (AF)

Risk Factors of Hoyt et al for Complications Following Catheter Ablation of Atrial Fibrillation

Criteria of Contreras-Valdes et al for Esophageal Injury Following Radiofrequency Catheter Ablation for Atrial Fibrillation

Clinical Features of Atrioesophageal Fistula (AEF) Following Radiofrequency Catheter Ablation for Atrial Fibrillation

Echocardiographic Criteria of Michels et al for a Patient with Hypertrophic Cardiomyopathy

Trigeminocardiac Reflex (TCR) and Bradycardia

Model of Thankavel et al for Predicting Patent Ductus Arteriosus (PDA) Closure in a Neonate <= 30 Weeks Gestation

Pulseless Electrical Activity (PEA)

Rules of Smith et for Differentiating Acute Anterior ST-Elevation Myocardial Infarction (STEMI) from Left Ventricular Aneurysm (LVA)

Risk Factors of Di Salvo et al for Risk of Embolic Events in a Patient with Infective Endocarditis

Consensus Criteria of Grant et al for Severe Tricuspid Regurgitation (TR) on Doppler Echocardiography

Risk Factors of Islas et al for a Poor Outcome of Transcatheter Aortic Valve Implantation (TAVI) Without Balloon Aortic Predilation

Criteria of Lu et al for Screening a Child for Rheumatic Heart Disease in a Developing Country Using Handheld Echocardiography

World Heart Federation (WHF) Criteria for the Echocardiographic Diagnosis of Rheumatic Heart Disease in Pediatric Patients: Mitral Valve Findings

World Heart Federation (WHF) Criteria for the Echocardiographic Diagnosis of Rheumatic Heart Disease in Pediatric Patients: Aortic Valve Findings

Method of Am Dinh et al for Measuring the Cardiac Index with a Focused Ultrasound Examination

Algorithm of Zhong et al for Distinguishing Atrioventricular Node Re-Entrant Tachycardia (AVNRT) from Atrioventricular Reciprocating Tachycardia (AVRT)

DR-FLASH Score of Kosiuk et al for Predicting Left Atrial Arrhythmogenic Substrate

Score of de Souza et al for Predicting Sudden Death in a Patient with Chagas Cardiomyopathy

Findings on Echocardiography Suggestive of the Underlying Cause for a Cardiomyopathy

Predictors of Minich et al for Outcome Following Biventricular Repair in an Infant with Pulmonary Atresia and an Intact Ventricular Septum

World Heart Federation (WHF) Criteria for the Echocardiographic Diagnosis of Rheumatic Heart Disease in Pediatric Patients: Diagnosis

Prediction of 1-Year Mortality Following Percutaneous Coronary Intervention Based on the Study of Fu et al in the ASSENT-2 Trial

When to Suspect Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) in a Patient

Criteria of Priori et al for the Diagnosis of Early Repolarization (ER)

Idiopathic Ventricular Fibrillation (IVF)

When to Consider Genetic Testing of a Patient with Idiopathic Ventricular Fibrillation (IVF)

Isolated Progressive Cardiac Conduction Disease (PCCD) with Structurally Normal Heart

Progressive Cardiac Conduction Disease (PCCD) with a Structurally Abnormal Heart

Criteria for the Diagnosis of Low Flow, Low Gradient Aortic Stenosis (LFLGAS)

Strict Negative Criteria of Sivak et al for Exclusion of Native Valve Infective Endocarditis by Transthoracic Endocarditis

Clinical Features of Classic Timothy Syndrome (Type 1)

Prenatal Diagnosis of a Fetus with Timothy Syndrome

Clinical Features of Jervell and Lange-Nielsen Syndrome (Cardio-Auditory Syndrome)

Clinical Features of the Brugada Syndrome

Classification of the Electrocardiogram in Brugada Syndrome

Clinical Features of Andersen-Tawil Syndrome (ATS, Long QT Syndrome Type 7)

Criteria of Beltrame for Primary Coronary Slow Flow (Coronary Slow Flow Phenomenon, CSFP)

Seattle Criteria for Normal Changes in the Electrocardiogram (ECG) That Can Be Seen in Asymptomatic Athletes

Changes in the Electrocardiogram Associated with a Left-Sided Pneumothorax

Seattle Criteria for Changes in the Electrocardiogram (ECG) Associated with a Primary Electrical Disorder in an Athlete

Seattle Criteria for Changes in the Electrocardiogram (ECG) Associated with Cardiomyopathy in an Athlete

German Spiked Helmet (Pickelhaube) Sign

Cardiac Status Score (CSS) of Fukuda et al in a Patient with Acute Myocardial Infarction (AMI)

Biventricular Echocardiographic Index of Goda et al for Predicting Survival of a Patient with Pulmonary Hypertension

Heart Block Following Chest Trauma

Autoimmune Congenital Heart Block Associated with Maternal Autoimmune Disease

Equation of McKaigney et al for Estimating Left Ventricular Ejection Fraction (LVEF) from the Mitral Valve E-Point Septal Separation (EPSS) on Doppler Echocardiography

Indications for Considering the Placement of a Left Atrial Appendage (LAA) Closure Device in a Patient with Atrial Fibrillation

Model of Padala et al for Predicting Risk of Complications Following Ablation for Atrial Fibrillation

Estimation of Central Venous Pressure (CVP) from Ratio of Short to Long Diameters of the Inferior Vena Cava (IVC) Based on the Study of Seo et al

Differential Diagnosis of a Prolonged QTc

Predictors of van der Ende et al for Failure to Diagnose a Myocardial Infarction on an Electrocardiogram

Ratio of the Diameters of the Left Atrium to Vertebral Body to Identify Left Atrial Enlargement and Cardiogenic Pulmonary Edema

Risk Factors of von Rotz et al for Premature Ventricular Contractions (PVCs) in Healthy Young Adults

Echocardiographic Criteria of Kurnicka et al for Acute Pulmonary Embolism with Hemodynamic Instability

CT Pulmonary Angiography Predictors for Mortality in Pulmonary Embolism Based on the Study of Aviram et al

Prognostic Factors of Toosi et al for a Patient with an Acute Pulmonary Embolism

Echocardiographic Features of Cor Pulmonale

Echocardiographic Score of D'Alto et al for Distinguishing Pre from Postcapillary Pulmonary Hypertension

Echocardiographic Score of Opotowsky et al for Evaluating a Patient with Pulmonary Hypertension

Heart Block Associated with Systemic Lupus Erythematosus (SLE)

Migraine-Associated Cardiac Arrhythmias and Malformations

Permanent Pacemaker Implantation After Surgical Ablation for Atrial Fibrillation Based on the Study of Pecha et al

Criteria of Weinberg et al for the Diagnosis of Atrial Flutter

TrOPs-BAC Models of Atzema et al for 30-Day Mortality in Atrial Fibrillation: Complex Model

TrOPs-BAC Models of Atzema et al for 30-Day Mortality in Atrial Fibrillation: Simple Model

Echocardiographic Predictors of Yoon et al for Persistent or Permanent Atrial Fibrillation in a Patient with Paroxysmal Atrial Fibrillation (PAF)

CHARGE-AF Models for Predicting the Incidence of Atrial Fibrillation: Simple Model

CHARGE-AF Models for Predicting the Incidence of Atrial Fibrillation: Augmented Model

Junior SVT Score of Deutsch et al for Differentiating Orthodromic Atrioventricular Reentry Tachycardia (OAVRT) from Atrioventricular Nodal Reentry Tachycardia (AVNRT) in a Pediatric Patient with Narrow QRS Tachycardia

Risk Factors of Park et al for Early New Onset of an Atrial Tachyarrhythmia Following Trans-Catheter Device Closure of an Atrial Septal Defect (ASD)

Scoring System of Visentin et al for Predicting Atrial Fibrillation in a Patient with Chronic Lymphocytic Leukemia (CLL)

Diagnosis of Right Ventricular Dysfunction

Distension of the Inferior Vena Cava (IVC) in Right Ventricular Overload

Nomogram of Soslow et al for Predicting Coarctation of the Aorta in a Neonate with Patent Ductus Arteriosus (PDA)

Conditions Associated with a False Positive Diagnosis of Acute Myocardial Infarction (AMI) on an Electrocardiogram (ECG)

Conditions Associated with a False Negative Diagnosis of Acute Myocardial Infarction (AMI) on an Electrocardiogram (ECG)

ECG Criteria of Peguero et al for Left Ventricular Hypertrophy (LVH)

Echocardiographic Score of D'Alto et al for Diagnosis of Pulmonary Vascular Disease in a Patient with Heart Failure

Grading Scheme of Hahn et al for Paravalvular Aortic Regurgitation Following Transcatheter Aortic Valve Replacement

Metabolic Exercise Cardiac Kidney Indexes (MECKI) Score in a Patient with Chronic Heart Failure

Prolongation of the QTc Interval in an Alcoholic

ABC Death Risk Score of Hijazi et al for 1-Year Mortality in a Patient with Atrial Fibrillation

Risk Score of Gunda et al for Predicting Complications After Ablation for Ventricular Tachycardia

Suspicious Index of Besant et al for Identifying a Patient with High Grade Atrioventricular Block Due to Lyme Carditis (COSTAR)

Predictors of Manini et al for ECG Changes Associated with Suspected Poisoning

Predictors of Argulian et al for Inducible Ischemia in a Patient Referred to Stress Echocardiography for Exertional Dyspnea Without Chest Pain

Risk Score of Sieira et al for a Patient with Brugada Syndrome

PRAETORIAN Score of Quast et al for a Subcutaneous Implantable Cardioverter-Defibrillator (S-ICD)

Indications for Permanent Pacing Based on Electrophysiological Testing Performed on a Patient with Syncope

Score of Perez-Rodon et al for Predicting the Absence of Left Ventricular Remodeling Prior to Insertion of an Implantable Cardioverter Defibrillator (ICD)

Risk Score of Kramer et al for Predicting Early Mortality of a Patient with an Implantable Cardioverter-Defibrillator (ICD)

Risk Score of Nevzorov for Predicting 1-Year Mortality After Insertion of an Implantable Cardioverter Defibrillator (ICD, AAACC Score)

VALID-CRT Risk Score of Gasparini et al for a Patient with Implanted Cardiac Resynchronization Therapy (CRT)

Atrial Fibrillation and Hypothyroidism

Indications for Urgent Referral to an Atrial Fibrillation Specialist

Score of Roca-Luque for Identifying a Patient with Syncope Who Is At Risk for Advanced Atrioventricular Block After a Negative Electrophysiological Test

REFER Decision Rule for Referring an Adult for Echocardiography for the Diagnosis of Heart Failure (MICE Rule)

BRASH Syndrome

Cardiac Arrhythmias in Hereditary Hemorrhagic Telangiectasia (HHT)

Electrical Risk Score of Aro et al for Sudden Cardiac Death

Coronary Artery Bypass Graft (CABG) Related Myocardial Infarction

ECG Changes That May Be Associated with a Previous Myocardial Infarction

ECG Evidence for a Silent (Unrecognized) Acute Myocardial Infarction (AMI)

Chapman Sign

ECG Equation of Smith et al for Differentiating Early Repolarization from Subtle Anterior ST-Segment Elevation Myocardial Infarction (STEMI)

Criteria of Sgarbossa et al for Acute Myocardial Infarction in the Presence of Ventricular Paced Rhythm (VPR)

Predictors of Cannon et al for Diagnosis of a Non-Q Wave Acute Myocardial Infarction

Formula of Driver et al for Distinguishing Early Repolarization From Suble Left Anterior Descending Coronary Artery Occlusion

Bedside Ultrasound Measure of Simon et al for Detecting an Elevated Right Atrial Pressure

Risk Factors of Santangeli et al for Early Mortality Following Catheter Ablation of Ventricular Tachycardia in a Patient with Structural Heart Disease

Electrical Storm

PAINESD Score

Classification of Brugada for Ventricular Tachycardia Acceleration During Programmed Electrical Stimulation

Classification of Horowitz for Pericardial Effusion on Echocardiography

Decision Aid of Fink et al for Referring a Patient with a Systolic Murmur to Echocardiography

Estimation of Right Ventricular Systolic Pressure in a Patient with Tricuspid Regurgitation Using Doppler Ultrasonography

Severity of Aortic Stenosis and the Energy Loss Index (ELI)

Simplified Formula of Hakki et al for Estimating the Area of a Stenotic Aortic or Mitral Valve

Rule of Otto and Pearlman for Doppler Ultrasonography in a Patient with Symptomatic Aortic Stenosis

Early Diastolic Velocity of the Mitral Annulus (Ea) and Estimation of the Pulmonary Capillary Wedge Pressure (PCWP)

DANAMI (Danish Trial in Acute Myocardial Infarction-2) Score

GISSI-2 Index

Score of Prakash et al for All-Cause Mortality Based on Clinical and Exercise Test Findings

6-Item Clinical Score of Cortigiani et al for Evaluating a Patient Undergoing Stress Echocardiography

Exercise-Induced Bundle Branch Block (BBB)

Significance of Ventricular Premature Contractions (VPCs) in a Patient Undergoing Treadmill Stress Testing

Prediction of Torsade de Pointes from the QT Interval for a Patient with an Amisulpride Overdose

Risk Model of Dodson et al for In-Hospital Adverse Event After Implantation of a Cardioverter-Defibrillator (ICD)

Risk Score of Padala et al for Intraprocedural Cardiac Injury During Implantable Cardioverter Defibrillator (ICD) Placement

C2HEST Score of Li et al for Predicting Atrial Fibrillation in an Asian Adult

AS5F Score of Uphaus et al for Detecting Paroxysmal Atrial Fibrillation After a Stroke

AFTER2 Score of Atzema et al for a Patient with Atrial Fibrillation in the Emergency Department

2MACE Score of Pastroi et al for a Patient with Non-Valvular Atrial Fibrillation

Atrial Fibrillation Burden

Predictors of the Stroke Prevention in Atrial Fibrillation Investigators for Thromboembolism in Atrial Fibrillation

Study of Weigner et al for Risk of Thromboembolism Associated with Conversion of Atrial Fibrillation Lasting Less Than 48 Hours

Evaluation of a Patient with Sinus Tachycardia

Echocardiographic Findings of Mishra et al at the Mitral Valve for Predicting Heart Failure in a Patient with Coronary Artery Disease

Differential Diagnosis of Bradycardia

Classification of Bradydysrhythmias

ECG Features of Sinus Bradycardia

Echocardiographic Method of D'Cruz and Hoffman to Estimate the Size of a Large Pericardial Effusion

Mayo Clinic Criteria for Constrictive Pericarditis by Echocardiography

Sinus Node Responsiveness Index

Equation of Karjalainen et al for Calculating QTc

Formula of Fridericia for Corrected QT Interval

Risk Score of Tisdale et al for Predicting QTc Interval Prolongation in a Hospitalized Patient

Algorithm of DeMeester et al for a Patient with Atrial Fibrillation and Rapid Heart Rate in the Emergency Department

HAVOC Score of Kwong et al for Predicting Atrial Fibrillation

ESCARVAL Risk Score of Orozco-Beltran et al for Atrial Fibrillation in a Hypertensive Patient

Bradycardia Associated with Ophthalmic Beta-Blocker Therapy for Glaucoma

Lake Louise Imaging Criteria for the Diagnosis of Myocarditis by Cardiac Magnetic Resonance (CMR)

Electrocardiographic Prognostic Factors of Butta et al for a Patient with Acute Myocarditis

ECG Prognostic Score of Soofi et al

ECG Changes of Rossello et al Differentiating Acute Pericarditis from Acute Myocardial Infarction (AMI)

Echocardiographic Predictors of Vyas-Read et al for Mortality of an Infant with Severe Bronchopulmonary Dysplasia (BPD)

Estimation of Mean Pulmonary Artery Pressure Using the Equations of Dabestani et al

Progressive First-Degree Atrioventricular Block and Perioperative Bradyarrhythmia

Prediction of Pulmonary Hypertension in a Patient with Systemic Sclerosis Using Exercise Echocardiography

Prognostic Findings of Hebestreit et al for Cystic Fibrosis From Cardiopulmonary Exercise Testing (CPET)

Acquired Prolongation of the QT Interval and Mortality for a Patient in the ICU

Conditions Causing a Brugada Phenocopy

Criteria for the Diagnosis of Brugada Phenocopy

Impact of Fever on a Patient with Brugada Syndrome

Concealed Brugada Syndrome

Risk Factors for New-Onset of Atrial Fibrillation in a Patient with Sepsis

Risk Factors of Bedford et al for New-Onset Atrial Fibrillation for an Adult in the Intensive Care Unit (ICU)

Risk Factors for Atrial Fibrillation in a Patient with HIV

Risk Factors of He et al for New-Onset of Atrial Fibrillation (NOAF) After Acute Myocardial Infarction (AMI)

Differential diagnosis of Bradycardia in a Patient with Lung Cancer

Screening for Pulmonary Artery Stenosis (PAS) in a Patient with Lung Cancer

Electrocardiographic Risk Score of Holkeri et al for Predicting Sudden Cardiac Death in a General Population

ECG Features of the U Wave

Causes of an Abnormal U Wave

Echocardiography-Based Risk Score of Zhu et al for a Patient on Hemodialysis

ST-Segment Elevation in Precordial Leads of the ECG in a Healthy Adult

Differential Diagnosis of an Elevated ST Segment

Scoring System of Bode-Thomas et al for Myocardial Ischemia in a Patient with Sickle Cell Anemia

Score of Braunstein et al for the Diagnosis of Left Ventricular Hypertrophy

Electrocardiographic Changes Seen with Chronic Cocaine Use

Shanghai Score for the Diagnosis of Brugada Syndrome

Models of Hong et al for Predicting Subarachnoid Hemorrhage from the ECG: World Federation of Neurosurgical Societies (WFNS) Model

Models of Hong et al for Predicting Subarachnoid Hemorrhage from the ECG: Hunt and Hess Model

Models of Hong et al for Predicting Subarachnoid Hemorrhage from the ECG: Fisher Grade Model

QQ-LAE Score of Liu et al for Identify a Super-Responder to Cardiac Resynchronization Therapy

Electrocardiographic and Echocardiographic Findings in a Patient with Fabry Disease

Shockable and Nonshockable Initial Rhythms in Cardiac Arrest

SACAF Score of Wu et al for Risk of Ventricular Tachyarrhythmia and Out-of-Hospital Cardiac Arrest (OHCA)

Equations of Chubb et al for Calculating Age-Dependent QRS Duration Z-Scores

Spodick's Sign in Acute Pericarditis

Method of Jain for Identifying Constrictive Pericarditis Using Ejection Times During the Respiratory Cycle

Tachycardia-Dependent Paroxysmal Atrioventricular (AV) Block

Risk Factors of Lin et al for Complete Atrioventricular (AV) Block After Occlusion of a Perimembranous Ventricular Septal Defect (VSD)

Atrial Fibrillation Associated with Carbon Monoxide Poisoning

Predictors of Bashir et al for Cardiovascular Perforation During Cardiac Lead Extraction

TIMI Thrombus Burden Classification

PALSE Score of Ozcan Cetin et al for Predicting the Thromboembolic Milieu Associated with Atrial Fibrillation

Predictors of Choi et al for Early Recurrence of Atrial Fibrillation

Admit-AF Risk Score of Meyre et al for Predicting Hospital Admission for a Patient with Atrial Fibrillation

Score for Targeting of Atrial Fibrillation (STAF) of Suissa et al

AS5F Score of Uphaus et al for Predicting Paroxysmal Atrial Fibrillation After Stroke

iPAB Score of Yoshioka et al for Identifying a Patient with Stroke Who May Have Paroxysmal Atrial Fibrillation

AF-ESUS Score of Ntaios et al for New Incident Atrial Fibrillation in a Stroke Patient

Brown ESUS-AF Score of Ricci et al for Predicting Paroxysmal Atrial Fibrillation Following Embolic Stroke of Unknown Source

Echocardiographic Killip Classification of Milwidsky et al

ECG Mortality Predictors of Lahti et al for a Patient with an ST Segment Elevation Myocardial Infarction (STEMI)

Pseudo Myocardial Infarction in Diabetic Ketoacidosis (DKA)

ECG Features of Zhou et al for Total Occlusion of the Left Main Coronary Artery Without Collateral Circulation

JIM Score of Jim et al for Identifying the Affected Artery Following an Inferior Myocardial Infarction

Risk Predictors of Okin et al for a Patient with Hypertension Based on ECG Criteria for Left Ventricular Hypertrophy (LVH)

ECG Predictors of Hashimoto et al for Lethal Ventricular Tachyarrhythmias in a Patient with Chronic Kidney Disease (CKD)

ABC-VT Risk Score of Voskoboinik et al for Adverse Outcome in a Patient with Frequent Premature Ventricular Complexes

P Wave Interatrial Block (IAB)

ECG Changes Associated with Toxic Mushroom Myocarditis

Cardiac Damaging Staging in a Patient with Aortic Stenosis

Risk Score of Vandael et al for Prolonged QTc in a Hospitalized Psychiatric Patient (Modified RISQ-PATH Score)

Seizure-Related (Ictal or Post-Ictal) Cardiac Arrhythmias

Model of Sheng et al for Recurrence of Paroxysmal Atrial Fibrillation (PAF) After Post-Circular Pulmonary Vein Radiofrequency Ablation (CPVA)

Risk Factors of Peng et al for Late Recurrence of Nonvalvular Atrial Fibrillation After Radiofrequency Catheter Ablation

Morphology-Voltage-P-Wave Duration (MVP) ECG Risk Score for Atrial Fibrillation

Differential Diagnosis of Sleep-Related Bradycardia

Model of Figliozzi for Identify Cardiac Involvement in a Patient with Fabry Disease

Treatable Causes of Cardiac Arrest (The 5 H's and 5 T's)

PDDPC Score of Giordano et al for Predicting Duct-Dependency After Percutaneous Surgery for Congenital Pulmonary Valve Stenosis or Atresia

Score of Wongthida et al for Life-Threatening Arrhythmias Associated with ST-Elevation Acute Coronary Syndrome After Percutaneous Coronary Intervention (PCI)

Glasgow CMR Risk Model of Bulluck et al for Reperfused ST Segment Elevation Myocardial Infarction (STEMI)

Eitel Risk Score of Stiermaier et al for ST-Segment Elevation Myocardial Infarction (STEMI) Using Cardiac Magnetic Resonance Imaging (MRI)

Score of Ladouceur et al for Ventricular Arrhythmia or Sudden Death in an Adult with Transposition of the Great Arteries

Algorithm of Fortuni et al for Grading the Severity of Secondary Tricuspid Regurgitation

Criteria of Kebed et al for Massive Tricuspid Regurgitation

Prognostic Factors of Ito et al for a Patient with Moderate Aortic Stenosis

Algorithm of Andersen et al for Estimating Left Atrial Pressure By Echocardiography: Left Atrial Pressure Determination

Algorithm of Andersen et al for Estimating Left Atrial Pressure By Echocardiography: Clinical Use

ScREEN Score for a Patient Undergoing Cardiac Resynchronization Therapy

Predictors of Uemura et al for Recurrent Atrial Fibrillation Following Catheter Ablation

Graz AF Risk Score of Kneihsl et al

Modified C2HEST (mC2HEST) Score of Li et al for Predicting Atrial Fibrillation in an Asian Adult

Model of Klein Klouwenberg et al for Predicting Onset of Atrial Fibrillation in a Septic Adult in the ICU

Predictors of Guttmann et al for Atrial Fibrillation in a Patient with Hypertrophic Cardiomyopathy

Right Ventricular Dysfunction (RVD) Score of Bech-Hanssen et al

Screening for Pediatric Lyme Disease Using the Electrocardiogram

Risk Score of Piccini et al for Pericardial Effusion After Implantation of a Leadless Pacemaker

Indications for Influenza Vaccination or Prophylaxis in a Traveler

Changes in the 12-Lead Electrocardiogram for a Patient with Dextrocardia

Manchester Acute Coronary Syndromes ECG Risk Model (MACS-ECG)

Model of Cadrin-Tourigny et al for Predicting Sustained Ventricular Tachycardia in a Patient with Arrhythmogenic Right Ventricular Cardiomyopathy

Score of Murni et al for Predicting Pulmonary Hypertension in a Pediatric Patient with Atrial Septal Defect (ASD)

Scoring Tool of Timberline et al for Persistent Pulmonary Hypertension of Newborn (PPHN): Oxygenation Score

Scoring Tool of Timberline et al for Persistent Pulmonary Hypertension of Newborn (PPHN): Echocardiogram and Final Scores (HRF/PH Score)

Predictors of Aafreen et al for Respiratory Distress in an Early Preterm Newborn

H2VK-65 Score of Kaolawanich et al for Predicting a High Coronary Artery Calcium Score in a Symptomatic Patient

Risk Score of McCubrey et al for Major Adverse Cardiac Events (MACE) Based on the Cardiac PET/CT Scan: Score for 90-Day Risk

Risk Score of McCubrey et al for Major Adverse Cardiac Events (MACE) Based on the Cardiac PET/CT Scan: Score for 1-Year Risk

Vall d'Hebron Risk Score II: Model with Negative History

Vall d'Hebron Risk Score II: Model with Positive History

Main Types of Congenital Long QT Syndrome

1-2-3-LQTS Risk Model of Mazzanti et al for Long QT Syndrome

Prolonged QTc Interval and Eating Disorders

Clinical Score of Yuksen et al for Recurrence Risk of Paroxysmal Supraventricular Tachycardia (PSVT)

ACEF-LA Score of Taylan et al for Predicting Recurrent Atrial Fibrillation After Cryoablation

PE2RT Score of Isaak et al for Prognosis in Takotsubo Syndrome

DEI Score of Zamfirescu et al for Predicting Early Readmission After a First Episode of Acute Heart Failure with Preserved Ejection Fraction (HFpEF)

Early Detection Rule of Chon et al for Detecting Severe Hyperkalemia in a Patient with Symptomatic Bradycardia

CoMOD Echocardiographic Score of Bartolacelli et al for Predicting Neonatal Surgery for Aortic Coarctation in a Newborn with Patent Ductus Arteriosus (PDA)

J Wave of Osborn

Electrocardiographic Changes Associated with Cirrhosis

Red Flags of Cuddy et al for Cardiac Amyloidosis on Echocardiography

Predictors of Sebestyen et al for Ventricular Arrhythmias in a Patient with Systemic Sclerosis

Mayo Clinic WCT (Wide Complex Tachycardia) Formula of May et al

Mayo Clinic VT Prediction Model of May et al

Calcium Release Deficiency Syndrome (CRDS)

Predicting Arrhythmia Event (PAT) Score of Rattanawong et al for a Patient with Brugada Syndrome

BRUGADA-RISK Score of Honarbakhsh et al

GARFIELD-AF Predictive Models for a Patient with Atrial Fibrillation: 2-Year Mortality

MEDIA Echo Score of Huttin et al for Heart Failure with Preserved Ejection Fraction (HFpEF)

T(peak)-to-T(end) Interval (T Wave Peak-to-End Interval, Tp-e)

Clinical Risk Prediction Score of Dasgupta et al for Postoperative Accelerated Junctional Rhythm and Junctional Ectopic Tachycardia in Children with Congenital Heart Disease (CHD)

Hemodynamic and Echocardiographic Predictors of Punn et al for Failed Weaning from Venoarterial Extracorporeal Membrane Oxygenation (vaECMO)

Predictors of Huang et al for Severe Left Main and/or Three Vessel Coronary Artery Disease in a Patient with Non-ST-Segment Elevation Myocardial Infarction

Method of Istrail et al for Estimating Right Atrial Pressure with Ultrasonography

Voltage to Left Ventricular Mass Ratio of Jiang et al for Cardiac Amyloidosis

Predictors of Morita et al for Ventricular Fibrillation in a Patient with Early Repolarization Syndrome

Malignant Early Repolarization

Benign Early Repolarization

ECG Changes in Severe Quetiapine Poisoning

P-Wave Abnormalities and Risk of Stroke in a Patient with Atrial Fibrillation

Atri-Risk Conduction Index (ARCI) Score of Grubb et al for Predicting Risk of Atrial Fibrillation After Typical Atrial Flutter Ablation

Diagnosis of Cardiac Sarcoidosis in a Patient with Proven Extracardiac Sarcoidosis

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Coronary Artery Disease Newly Recognized (Indications 1 to 6)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Coronary Artery Disease Following Elective Revascularization (Indication 7)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Coronary Artery Disease and No Recent Coronary Event (Indications 8 to 11)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Coronary Artery Disease Undergoing Exercise Testing (Indications 12 to 14)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Hemodynamic Instability or Ventricular Arrhythmias With Coronary Artery Disease (Indications 15 to 21)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention for a Patient with Sustained Ventricular Arrhythmias Due to a Genetic Disorder (Indications 22 to 29)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention for Ventricular Arrhythmia in the Absence of a Cardiac Structural or Genetic Disorder (Indications 30 to 36)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention for a Patient with Syncope in the Absence of Structural Heart Disease (Indications 37 to 49)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention for Syncope in a Patient with Coronary Artery Disease (Indications 50 to 57)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention for a Patient with Syncope and Nonischemic Structural Heart Disease (Indications 58 to 67)

Appropriate Use Criteria of Russo et al for CIED: Secondary Prevention in a Patient with Monomorphic Ventricular Tachycardia Associated with a Structural Heart Disease (Indications 68 to 73)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention Post-Acute Myocardial Infarction (Indications 74 to 88)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention in Patient Post-Acute Myocardial Infarction with Pre-Existing Chronic Cardiomyopathy (Indications 89-91)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention in Post Acute Myocardial Infarction with Pacemaker Therapy (Indications 92 and 93)

Appropriate Use Criteria of Russo et al for CIED: Indications for Primary Prevention in a Patient with Ischemic Cardiomyopathy If > 40 Days Post Myocardial Infarction (Indications 94 to 102)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention for a Patient with Ischemic Cardiomyopathy and Without Recent Myocardial Infarction (Indications 103 to 106)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention in a Patient with Nonischemic Cardiomyopathy (Indications 107 to 117)

Appropriate Use Criteria of Russo et al for CIED: Nonischemic Cardiomyopathy and Pacing After Valve Intervention (Indications 118 and 119)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention for a Patient with Nonischemic Cardiomyopathy (Indications 120 to 126)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention for a Patient with a Genetic Cardiomyopathy with Structural Changes to the Heart (Indications 127 to 131)

Appropriate Use Criteria of Russo et al for CIED: Primary Prevention for a Patient with a Genetic Cardiomyopathy without Structural Changes to the Heart (Indications 132 to 139)

Appropriate Use Criteria of Russo et al for CIED: Comorbidities (Indications 140 to 156)

Appropriate Use Criteria of Russo et al for CIED: ICD Generator Replacement with Primary Prevention at Initial Implant (Indications 157-165 and 169-171)

Appropriate Use Criteria of Russo et al for CIED: ICD Generator Replacement with Secondary Prevention at Initial Implant (Indications 166-168 and 172-174)

Appropriate Use Criteria of Russo et al for CIED: Dual Chamber ICD for Tachyarrhythmia (Indications 187-191)

Appropriate Use Criteria of Russo et al for CIED: Dual Chamber ICD in a Patient with a Conduction System Abnormality (Indications 176-186)

Appropriate Use Criteria of Russo et al for CIED: Dual Chamber ICD for Other Conditions (Indications 175 and 192-195)

Appropriate Use Criteria of Russo et al for CIED: Totally Subcutaneous ICD for Primary Prevention (Indications 196-206)

Appropriate Use Criteria of Russo et al for CIED: Totally Subcutaneous ICD for Secondary Prevention of Sustained Ventricular Arrhythmias (Indications 207-212)

Appropriate Use Criteria of Russo et al for CIED: Totally Subcutaneous ICD for Secondary Prevention with Syncope Due to Ventricular Arrhythmia (Indications 213-218)

Appropriate Use Criteria of Russo et al for CIED: Totally Subcutaneous ICD for Prevention in Other Conditions (Indications 219-222)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) Without Prior Implant in Ischemic Cardiomyopathy (Indications 223-234)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) Without Prior Implant in Nonischemic Cardiomyopathy (Indications 235-246)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) in a Patient with Heart Failure, Indications for ICD, and LVEF 36 to 50% (Indications 247-251)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) in a Patient with Heart Failure and LVEF <= 35% (Indications 252-257)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) in a Patient with RV Pacing and an Indication for ICD or Pacemaker (Indications 258-261)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) for Refractory Class NYHA III or IV Heart Failure < 3 Months After Revascularization (Indications 262-269)

Appropriate Use Criteria of Russo et al for CIED: Cardiac Resynchronization Therapy (CRT) in Heart Failure with Right Ventricular Dysfunction (Indication 270)

Appropriate Use Criteria of Russo et al for CIED: Cardiomyopathy with Left Ventricular Assist Device (LVAD) and Pre-Existing ICD (Indications 271-277)

Appropriate Use Criteria of Russo et al for CIED: Cardiomyopathy with Left Ventricular Assist Device (LVAD) and Without a Pre-Existing ICD (Indications 278-281)

Appropriate Use Criteria of Russo et al for CIED: Cardiomyopathy with Left Ventricular Assist Device (LVAD) With or Without a Pre-Existing CRT-D (Indications 282-285)

Appropriate Use Criteria of Russo et al for CIED: Status Post Heart Transplantation (Indications 286 to 288)

Appropriate Use Criteria of Russo et al for CIED: Heart Failure and Cardiac Contractility Modulation (CCM, Indications 289 to 291)

Appropriate Use Criteria of Russo et al for CIED: Leadless and Bradycardia Pacing (Indications 292-299)

Appropriate Use Criteria of Russo et al for CIED: Venous Access Issues for Leadless and Bradycardia Pacing (Indications 300-302)

Appropriate Use Criteria of Russo et al for CIED: Leadless and Bradycardia Pacing in a Patient with a History of CIED Infection (Indications 303-305)

Appropriate Use Criteria of Russo et al for CIED: Use of Leadless and Bradycardia Pacing in Other Conditions (Indications 306-313)

Appropriate Use Criteria of Russo et al for CIED: Leadless and Bradycardia Pacing in a Patient with a Previously Implanted Subcutaneous ICD (Indications 314-317)

Appropriate Use Criteria of Russo et al for CIED: Conduction System Pacing (Indications 318 to 335)

Risk Factors for Complications or Death Following CIED Lead Extraction

Complications Associated with Extraction of a CIED Lead

Noninfectious Indications for CIED Lead Extraction

Formula of Wang et al for Estimating the True QT Interval in a Patient with Left Bundle Branch Block (LBBB)

Formula of Bogassian et al for Estimating QT Interval in a Patient with Left Bundle Branch Block (LBBB)

Equation of Tang and Rabkin for Estimating the QT Interval in a Patient with Left Bundle Branch Block (LBBB)

Formula of Yankelson et al for QT Interval in a Patient with Left Bundle Branch Block (LBBB) and Narrow QRS

Equation of Rautaharju et al for Adjusting the QT Interval in a Patient with a Ventricular Conduction Defect

Equations of Talbot for the Corrected QT Interval in a Patient with Left or Right Bundle Branch Block

Equation of Tabatabaei et al for Calculating the Corrected QT Interval for a Patient with Left Bundle Branch Block (LBBB)

JT Prolongation Index of Zhou et al for a Patient with Bundle Branch Block

QTc Alert System of Haugaa et al

Pro-QTc Score of Haugaa et al

Risk Model of Berger et al for Predicting Drug-Induced QTc Prolongation

Risk Factors for Prolongation of the QTc Interval in an HIV-Positive Patient

Malignant J Wave Syndromes (JWS)

Early Repolarization Syndrome Shanghai Score

Differential Diagnosis of the Early Repolarization Pattern

Genes Associated with the Malignant J Wave Syndromes (JWS)

Drugs Challenge for Concealed Brugada Syndrome

Intraventricular Conduction Delay (IVCD) Induced End QRS Notch

Conditions in the ECG Differential Diagnosis of Congenital Brugada Syndrome

RESOLVE Score of Dou et al for Predicting Side Branch Occlusion at a Coronary Bifurcation

ANTWERP Score of Bergonti et al for Left Ventricular Functional Recovery After Ablation in a Patient with Atrial Fibrillation and Heart Failure

Model of Carrick et al for Predicting Ventricular Arrhythmias in a Patient with Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)

Electrocardiography & Cardiac Imaging