Acute myocardial infarction within last six months |
10 points |
Previous acute myocardial infarction, more than six months ago |
5 points |
Angina class III |
10 points |
Angina class IV |
20 points |
Unstable angina within last three months |
10 points |
Pulmonary edema within last seven days |
10 points |
Previous pulmonary edema, more than seven days ago |
5 points |
Severe aortic stenosis |
20 points |
Non-sinusoidal rhythm or atrial extrasystole on preoperative electrocardiogram |
5 points |
Five ventricular extrasystoles/min on any electrocardiogram before the operation |
5 points |
Poor general condition (PO2 < 60 or PCO2 > 50, K < 3.0, bic < 20, U > 50, C > 3.0, chronic liver disease) |
5 points |
Emergency surgery |
10 points |
Age over 70 years |
5 points |
Low-risk variables |
Age > 70 years |
|
History of chest angina |
|
Diabetes |
|
History of acute myocardial infarct |
|
History of congestive heart failure |
|
Ventricular ectopia |
|
Ischemic abnormalities of the ST segment on resting electrocardiogram |
|
Systemic Arterial hypertension with severe ventricular hypertrophy |
|
Note: Evaluate the number of variables present and apply to the algorithm below |
Class I |
= 15 points |
Class II |
= 15-30 points |
Class III |
= 30 points or more |