始巨鳄类(兽孔目,下孔亚纲)在中国的首次发现:甘肃玉门晚二叠…
Published in 古脊椎动物学报 • Jan 1, 1997
Authors:,
李锦玲
程政武
Abstract
The hemodynamic effects of isometric exercise and the response to hydralazine therapy were evaluated in 11 patients with chronic, severe aortic regurgitation (AR). Isometric exercise produced a significant increase in heart rate (from 78 +/- 11 to 93 +/- 19 beats/min [mean +/- standard deviation], p...
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