in this retrospective analysis , progression of coronary artery disease between two cardiac catheterization procedures is described in 38 patients : 23 patients ( group i ) who had a myocardial infarction between the two studies and 15 patients ( group ii ) who presented with one or more new total occlusions at the second study without sustaining an intervening infarction .
C0027051
myocardial infarction
C0021308
infarction