Warfarin Resistance Diagnosis | Medicalalgorithms.com

Are you evaluating a patient with apparent warfarin resistance?

Yes

Has the patient demonstrated a good response to coumadin in the past?

Yes

Does the patient respond well to a parenteral dose of coumadin?

Yes

Does the patient have a chronic persistent diarrhea?

Yes

Does the patient have a history of small bowel resection or bypass surgery affecting the duodenum?

Yes

Does the patient have a malabsorption syndrome affecting the proximal small bowel?

Yes

Does the patient have an abnormal warfarin absorption study?

Is there another explanation that can explain the warfarin resistance better?

Yes

Results

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Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Number of findings favoring the diagnosis of poor warfarin absorption

Number of findings favoring another explanation for the warfarin resistance

Caution: A qualified health practitioner should verify all results.
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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Risk Factors
- Risk Factors of Hylek et al for Excessive Warfarin Anticoagulation
- Algorithm of Dunn for the Perioperative Management of a Patient Receiving Oral Anticoagulation
Clinical Diagnosis, Including Family History For Genetics
- Warfarin (Coumadin) Resistance Testing
Laboratory Tests
- Warfarin (Coumadin) Resistance Testing

Therapy

Selection
- Algorithm of Dunn for the Perioperative Management of a Patient Receiving Oral Anticoagulation
Pharmacogenetics
- Regression Model of Wells et al for Predicting Warfarin Dose Using Pharmacogenetics
Drug Interactions
- Daily Warfarin Dosage Adjustment for Patient Receiving Long-Term Amiodarone Therapy
Dosage Calculations
Dosage Adjustments
Failure Handling And Therapy Escalation
- Warfarin (Coumadin) Resistance Testing
- Risk Factors of Hylek et al for Excessive Warfarin Anticoagulation

Monitoring

Response To Therapy
- Warfarin (Coumadin) Resistance Testing
Adverse Effects
- Risk Factors of Hylek et al for Excessive Warfarin Anticoagulation
Drug Levels
- Warfarin (Coumadin) Resistance Testing
Overdose And Reversal
- Warfarin (Coumadin) Resistance Testing
- Risk Factors of Hylek et al for Excessive Warfarin Anticoagulation

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Therapy

Monitoring

Specialty

Objective

ICD-10

Warfarin Resistance Associated with Poor Intestinal Absorption

Purpose: To evaluate a patient with apparent warfarin resistance for poor gastrointestinal absorption.

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Therapy

Monitoring

Specialty

Objective

ICD-10