patients with a history of old , well-compensated myocardial infarction , and those with cardiac arrhythmia , bundle-branch block , congestive heart failure and a-v block ( pacemaker-protected ) but no evidence of previous myocardial infarction fared almost as well as subjects of the same age without cardiac disease , and were considered to run the lowest operative risk .
C0027051
myocardial infarction
C0018799
cardiac disease