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Score of Cooperman et al for Predicting Risk of Complications Following Vascular Surgery in Patients with Peripheral Vascular Disease

Purpose: To evaluate a person with peripheral vascular disease for cardiovascular risk prior to vascular surgery using the score of Cooperman et al.

Description

Cooperman et al developed an equation for predicting the risk of cardiovascular complications following major vascular surgery in patients with peripheral vascular disease.


Parameters used for equation:

(1) angina

(2) congestive heart failure

(3) arrhythmia

(4) myocardial infarction

(5) cerebrovascular accident

(6) abnormal electrocardiogram (ECG)

 

Parameter

Finding

Points

angina

no

0

 

yes

1

congestive heart failure

no

0

 

yes

1

arrhythmia

no

0

 

yes

1

myocardial infarction

no

0

 

yes

1

cerebrovascular accident

no

0

 

yes

1

abnormal electrocardiogram

no

0

 

yes

1

 

X =

= (0.46 * (points for angina)) + (1.02 * (points for congestive heart failure)) + (0.62 * (points for arrhythmia)) + (0.64 * (points for myocardial infarction)) + (1.15 * (points for cerebrovascular accident)) + (1.25 * (points for abnormal electrocardiogram)) – 3.81

 

In the original paper, this is used as:

 

probability of cardiovascular complications =

= EXP(X)

 

However, it probably should be used as:

 

probability of cardiovascular complications =

= 1 / (1 + EXP((-1) * X))

 

Limitations:

• The score was developed in 1978.


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Specialty

Objective

ICD-10