title: Angiotensin-converting enzyme in acute myocardial infarction and angina pectoris.
abstract: Serum activity of angiotensin-converting enzyme was measured by serial analysis  in 19 patients with acute myocardial infarction and in eight patients with angina pectoris. As a rule no changes in enzyme activity occurred during 6 days observations. However, two patients with infarction exhibited a pronounced fall of enzyme activity which could not be related to clinical events. The analysis seems to have no place in the diagnosis and management of patients with myocardial infarction.
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000201:enzymology*; D005260:Female; D006801:Humans; D007700:Kinetics; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000201:enzymology*; D007703:Peptidyl-Dipeptidase A / Q000097:blood*
chemical_list: D007703:Peptidyl-Dipeptidase A