Wagner A E, Muir W W, Grospitch B J
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, Columbus 43210-1089.
Am J Vet Res. 1990 Jan;51(1):7-10.
The cardiopulmonary effects of 4 positions (standing, right lateral, left lateral, and dorsal recumbency) were evaluated in conscious cattle in which no sedatives or anesthetic drugs were given. Each position was maintained for 30 minutes, during which time there were no significant changes in heart rate, respiratory rate, mean arterial blood pressure, arterial pH, PaCO2, arterial base excess, or venous blood gas values. Significant decreases in PaO2 developed when cattle were in lateral positions and dorsal recumbency. Cardiac index was unchanged in all positions, except in dorsal recumbency at 30 minutes, when it was significantly decreased.
在未给予镇静剂或麻醉药物的清醒牛中，评估了4种体位（站立、右侧卧、左侧卧和仰卧）对心肺的影响。每个体位保持30分钟，在此期间，心率、呼吸频率、平均动脉血压、动脉pH值、动脉血二氧化碳分压、动脉碱剩余或静脉血气值均无显著变化。当牛处于侧卧和仰卧位时，动脉血氧分压显著降低。除在30分钟时仰卧位心脏指数显著降低外，所有体位的心脏指数均无变化。
