Electrical control of cardiac rhythm.
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Biomedical subjects
Publications and source records attributed to T Killip.
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The relation between vasectomy and renal disease was examined in the data collection phase of a study of vasectomy and coronary artery disease. The date of onset and type of urological disease was obtained for 11,205 men enrolled in the US Coronary Artery Surgery Study. Urolithiasis was the most common reported urological disease. The relative risk for calculi in men who had had a vasectomy ranged from 2.6 for patients 30-35 years old to 1.3 for those aged 55-65. The age-adjusted relative risk was 1.67 (p less than 0.001).
This study was designed to test the relationship between each of nine risk variables and the extent and severity of coronary artery disease in 15,298 patients with coronary artery disease proven by arteriography who were enrolled in the Coronary Artery Surgery Study. The extent and severity of the disease were highly significantly (p less than 0.001), but modestly, correlated with age, sex, cholesterol levels, history of diabetes, and history of hypertension. Interestingly, no positive correlation (indeed, in some subgroups, a negative correlation) occurred between the arteriographic measures of disease and the cigarette smoking history (ever or never, number of pack-years of smoking, duration of cigarette smoking, and peak daily cigarette consumption). These results suggest that the risk factors for presence of disease may differ from those influencing angiographic extent and severity.
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