Surveillance for XXXX after noncardiac operations.

@entity1 @entity101 @entity6 @entity63 @entity908 @entity1188 @entity86 @entity299 @entity583
@entity1 with @entity583 are frequently asymptomatic. Several follow-up strategies have been used to detect @entity1188 or @entity63 in asymptomatic @entity1 . Different investigators have used quite different criteria to define @entity1 at high risk. This study was done to evaluate these different approaches to selecting @entity1 who should be monitored with electrocardiograms (ECG) or enzymes, or both, postoperatively, as well as different strategies for the timing of follow-up evaluation. A total of 232 @entity1 , mostly @entity101 or @entity6 , were evaluated before undergoing elective operations and were observed serially from the day of the operation until discharge or the sixth postoperative day with daily clinical evaluations, ECG and @entity908 kinase isoenzymes. Several follow-up strategies used in recent studies were evaluated for sensitivity and specificity in identifying the @entity1 who had postoperative @entity1188 or @entity63 . The most sensitive strategies would obtain ECG in asymptomatic @entity1 on the day of the operation and the first two postoperative days. Several criteria for defining a high risk population were evaluated, including type of operation, age, history of @entity299 , Goldman's cardiac risk classification and the results of the preoperative ECG. Monitoring of @entity1 with an abnormal preoperative ECG would have identified 88 per cent of the @entity1 with @entity583 and 63 per cent of the @entity1 with definite @entity63 . Goldman's risk class identified @entity1 with a normal ECG who were at higher risk for @entity86 .
