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• W2093764213 abstract "In this prospective randomized study, resting and exercise hemodynamics were determined in the nonmedicated state before (entry) and 1 year after coronary bypass surgery in 38 patients, and at entry and 1 year in 40 patients treated medically. The surgical group showed a significant decrease in mean pulmonary arterial wedge pressure during exercise (entry 23.5 +/- 6.1 [standard error of the mean] mm Hg, 1 year 18.9 +/- 1.0, P less than 0.02); an increase in cardiac index during exercise (entry 4.3 +/- 0.1 liter/min per m2, 1 year 4.6 +/- 0.1, P less than 0.05); an increase in resting mean arterial pressure (entry 94.5 +/- 2.2 mm Hg, 1 year 100.2 +/- 2.2, P less than 0.02); and an increase in resting heart rate (entry 68.5 +/- 1.9 beats/min, 1 year: 76.0 +/- 2.0, P less than 0.01). Maximal treadmill exercise performance also improved significantly in the surgical group of patients (entry 285 +/- 24 seconds, 1 year 382 +/- 24, P less than 0.002). There were no significant changes in these variables in the medically treated control group. The improvement in pulmonary arterial wedge pressure during exercise and in maximal treadmill exercise time in the surgical group as a whole was due to striking improvement in these variables in a subgroup of 16 surgical patients who had a more than 10 mm Hg increase in pulmonary arterial wedge pressure during exercise in their entry study. In this subgoup, considered to contain those patients with marked ischemicdysfunction, pulmonary arterial wedge pressure during exercise fell from 31.4 +/- 1.5 mm Hg (entry) to 19.l +/- 1.8 (1 year) (P less than 0.0001) and treadmill time increased from 217 +/- 24 seconds (entry) to 357 +/- 37 (1 year) (P less than 0.001). Thus, hemodynamic evidence of ischemic left ventricular dysfunction during stress may identify those patients who will show objective improvement in ventricular performance after bypass graft surgery." @default.
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• W2093764213 date "1976-05-01" @default.
• W2093764213 modified "2023-09-25" @default.
• W2093764213 title "Effects of coronary artery bypass grafting on resting and exercise hemodynamics in patients with stable angina pectoris: A prospective, randomized study" @default.
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• W2093764213 doi "https://doi.org/10.1016/0002-9149(76)90105-3" @default.
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