Padala et al reported a score that can predict intraprocedural cardiac injury during placement of an implantable cardioverter defibrillator (ICD). The authors are from Virginia Commonwealth University, Medtronics, Rush University and the University of Colorado.
Patient selection: implantable cardioverter defibrillator (ICD)
Outcome: intraprocedural cardiac injury
Parameters:
(1) age in years
(2) sex
(3) body mass index (BMI) in kg per square meter
(4) hypertension
(5) chronic lung disease
(6) left bundle branch block (LBBB)
(7) continued warfarin use
(8) prior history of CABG procedure
Parameter
Finding
Points
age in years
<= 75 years
0
> 75 years
1
sex
male
0
female
1
BMI
>= 18.5 kg per square m
0
< 18.5 kg per sq m
1
hypertension
absent
0
present
1
chronic lung disease
absent
0
present
1
LBBB
absent
0
present
1
continued warfarin use
no
0
yes
1
history CABG
no
0
yes
-1
total score =
= SUM(points for all 8 parameters)
Interpretation:
• minimum score: -1
• maximum score: 7
• The higher the score the greater the risk of cardiac injury.
• The risk of cardiac injury ranged from 0.03% (low risk) to 1.4% (high risk).
Performance:
• The area under ROC curve was 0.72.
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