家兔肠缺血再灌注对膈肌电生理特性的影响

目的: 观察家兔肠缺血再灌注对膈肌电生理特性的影响。方法: 取家兔12只,随机分对照组、模型组,每组6只。复制家兔肠系膜动脉缺血再灌注损伤动物模型,测定缺血前、缺血1 h及再灌注1 h、2 h膈肌肌电图(EMGdi),经计算机MedLab采样、数字化,快速富利叶转换(FFT)分析,计算高频/低频(H/L)比值和中心频率(Fc),数据作方差分析q检验。结果: 实验组在肠缺血再灌注后1 h和2 h时Fc明显降低(P<0.01)。结论: 肠缺血再灌注可降低膈肌肌电的Fc

Effect of ischemia-reperfusion injury of diaphragmatic muscle in rabbits

Objective:To observe the effect of ischemia-reperfusion on the electrophyiology of diaphragm atic muscle in rabbits.Methods:Twelve healthy adult rabbits were randomly divided into experimental and control groups(each of six rabbits).The ischemia-reperfusion injury animal model was produced in rabbits .The diaphragmatic electromyogram(EMGdi) was recorded by computer.The contents of the high/low(H/L) frequency ratio and central frequency(Fc) were detected by Fast Fourier Transform(FFT) at the times of preischemia,post-ischemia and post-reperfusion.Data were analysed by variance analysis and q test.Results:The Fc in experimental group were significantly lower than that of control group(P<0.01) at one hour and two hours after ischemia-reperfusion injury.Conclusions:The electro-activity of diaphragm has been injuried by ischemia-reperfusion.