摘要
本文用电刺激犬膈神经（ＰＮＳ）、记录经膈压（Ｐｄｉ）－刺激频率（Ｆ）曲线、分析自主呼吸膈肌肌电频谱（ＥＭＧｄｉ）的方法，研究急性ＣＯ２潴留对膈肌功能的影响，并探讨ｐＨ值在其中的作用。发现：１．急性ＣＯ２潴留使Ｐｄｉ进行性下降、Ｐｄｉ－Ｆ曲线右移，ＥＭＧｄｉ频谱改变；２．维持正常的ｐＨ值可减轻Ｐｄｉ、ＥＭＧｄｉ的改变。提示急性ＣＯ２潴留严重损害膈肌功能，ｐＨ的变化于其中起重要作用。
he effect of acute hypercapnia ( AH ) on diaphragmatic function was investigated on openchest , machanically vetilated dogs. The diaphragmatic function was assessed by measuringtransdiaphragmatic pressure ( Pdi ) -stimulating frequency ( F ) curve during phrenic nerve stimulating and analysis the power spetrum of diaphragmatic electromygram ( EMGdi ) in spontanously breathing. It was found that Pdi decreased , Pdi-F curve shifted to the right andEMGdi changed markedly afrer AH but slightly with AH and normal pH. It was concluded thatAH damaged diaphragmatic function mainly through the acute change of pH.
出处
《基础医学与临床》
CSCD
1997年第2期139-141,共3页
Basic and Clinical Medicine
关键词
呼吸肌疲劳
膈肌功能
肌电图
高碳酸血症
respiratory muscle fatigue transdiaphragmatic pressure electromygram hypercapnia Department of Respiratory Disease Xinqiao Hospital The Theird Military Medical College
