Chest
Volume 81, Issue 6, June 1982, Pages 681-686
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Clinical Investigations
Angina Pectoris Before and After Myocardial Infarction: Angiographic Correlations

https://doi.org/10.1378/chest.81.6.681Get rights and content

Clinical, hemodynamic, and angiographic data were examined in 97 consecutive patients who underwent catheterization within two years of documented acute transmural myocardial infarction. The patients were divided according to the absence or presence of angina pectoris prior to myocardial infarction (groups 1 and 2). Group 1 had more females, was younger, and had a greater prevalence of one-vessel coronary artery disease. Of the patients surviving the myocardial infarction until hospital discharge, group 1 had fewer cases of postinfarction angina pectoris. The following were not statistically different for the two groups: mean time from infarction to catheterization, location of infarction, heart failure, coronary risk factors, mean left ventricular end-diastolic pressure, and mean ejection fraction. The angiographic significance of angina following infarction was analyzed in the 94 survivors. Patients with angina after infarction had a greater prevalence of two- and three-vessel coronary artery disease compared with patients without angina following infarction. Group 1 patients who had developed angina after infarction also had a greater prevalence of two- and three-vessel disease than patients who had no postinfarction angina. One-vessel disease was found in 82 percent of patients who had no angina before and after infarction. Infarction as the first manifestation of coronary artery disease (group 1) is often associated with one-vessel disease, especially if angina does not appear after infarction. Angina before or after infarction suggests two- and three-vessel disease.

Section snippets

MATERIALS AND METHODS

Reports from all patients undergoing selective coronary angiography at the Mount Sinai Medical Center were reviewed for the period from Jan 1, 1977, to June 30, 197 Patients who had a history of a single myocardial infarction were selected only if their infarction was within two years of catheterization. This time limit was used in an attempt to minimize angiographic changes from the postinfarction period to coronary angiography.18 We excluded patients with associated congenital or valvular

RESULTS

Of the 627 reports reviewed, 97 consecutive patients met the entrance criteria and comprised the study population. Reliable data for coronary risk factors were obtained in only 87 patients.

The patients were divided into two groups (Fig 1), determined by the absence (group 1, n = 63) or presence (group 2, n = 34) of angina pectoris prior to infarction. The 61 survivors of infarction from group 1 (two of the 63 patients died within two weeks of catheterization and were excluded from analysis)

DISCUSSION

Since the presence of infarction may not necessarily be predictive of the extent of coronary artery disease,6 in this study we investigated the angiographic correlations of a history of angina pectoris in relationship to the presence of a previous myocardial infarction.

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    Manuscript received August 31; revision accepted October 15.

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