在麻醉犬延髓头端切断术后，肺静脉-左心房连接处对扩张的反应。
The response to distension of the pulmonary vein-left atrial junctions in anaesthetized dogs after section of the rostral medulla.
作者信息
Burkhart S M, Ledsome J R
出版信息
J Physiol. 1977 Dec;273(1):57-67. doi: 10.1113/jphysiol.1977.sp012081.
Abstract
- Distension of the pulmonary vein-left atrial junctions caused an increase in heart rate and a transient decrease in mean arterial pressure. 2. Section of the brain stem at the level of the inferior cerebellar peduncle (rostral medulla) caused a decrease in mean arterial pressure. 3. Section of the rostral medulla had no effect on either the magnitude or the time course of the reflex response to pulmonary vein distension. 4. Administration of propranolol after section in the rostral medulla reduced the reflex increase in heart rate in response to pulmonary vein distension by an amount similar to that previously described in intact and decerebrate animals. 5. Bilateral cervial vagotomy prevented the reflex response to pulmonary vein distension.
摘要
- 肺静脉 - 左心房交界处扩张导致心率增加和平均动脉压短暂下降。2. 在小脑下脚水平（延髓头端）切断脑干导致平均动脉压下降。3. 切断延髓头端对肺静脉扩张反射反应的幅度或时间进程均无影响。4. 在延髓头端切断后给予普萘洛尔，可使肺静脉扩张引起的反射性心率增加降低，降低幅度与之前在完整动物和去大脑动物中描述的相似。5. 双侧颈迷走神经切断术可防止对肺静脉扩张的反射反应。
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The response to distension of the pulmonary vein-left atrial junctions in anaesthetized dogs after section of the rostral medulla.在麻醉犬延髓头端切断术后，肺静脉-左心房连接处对扩张的反应。
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