Physical Activitiea Associted with Angina Pectoris Before Myocardial Infarction and the Onset of Myocardial Infarction

One hundred and ninety-seven patients with a history of myocardeal infarction were interviewed to evaluate the incidence of angina pectoris and the physical activity precipitating angina before myocardial infarction, and the mode of physical activity at the onset of myocardial infarction. Ninety-ewo patients had no angina before infarction, whereas 105 did, In 105 patients, 58 had a chronic stable angina without a change of pattern of angina before infarction, while 22 noticed worsening of their symptoms within 2 weeks before infarction. Twenty five patients had new-onset angina within 2 weeks before infaction. In 92 patients without angina before infarction, myocardial infarction occurred during hard exertion in 10, mild exertion in 43, at rest in 28 and during sleep in 11. In 58 patients with chronic stable angina, 47 had angina on exertion, 7 at rest and 4 on both. However, the subsequent infaction occurred during hard exertion in 9, mind exertion in 16, at rest in 25, and during sleep in 8. In these patients without the worsening of symptoms or new onset of angina within 2 weeks before infarction, myocardial infarction occurred unpredictably or differently from the mode of physical activity that provoked angina.

Angina pectories

Myocardial infarction