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本文报道用体表电极法EMGdi检测COPD患者实验性DiF35例,并设立对照组47例,结果表明DiF后COPD组和对照组EMGdi的H/L和FC均显著降低,提示体表法记录的EMGdi可能在一定程度上反映DiF。检测DiF目前靠自身前后对照,本组以H/L下降15％为标准,DiF的检出率COPD组为60％,对照组76.6％。但DiF前后的H/L和FC在两组无显著差异(P>0.05),说明不能反映两组之间膈肌功能的差异。两组DiF前后的H/L和FC均显著相关(P<0.001)说明FC检测DiF同样有意义,且较H/L更为稳定,以FC下降5％为标准,COPD组DiF检出率为51.4％,对照组61.7％,与H/L的检出率相似。文章还探讨了DiF后部分受试者EMGdi功率谱反而向高频移动的原因。
This article reports EMDdi body surface examination of experimental DiF35 patients with COPD patients and 47 cases of control group, the results showed that after DiF COPD group and control group EMGdi H / L and FC were significantly lower, suggesting that the body surface recorded EMGdi May reflect DiF to some extent. Detection of DiF by itself before and after the control, the group to 15% reduction in H / L as the standard, the detection rate of DiF COPD group 60%, 76.6% of the control group. But before and after DiF H / L and FC no significant difference between the two groups (P> 0.05), indicating that can not reflect the difference between the two groups of diaphragmatic function. There was a significant correlation between H / L and FC before and after DiF in both groups (P <0.001), indicating that FC detection of DiF was also more meaningful and more stable than H / L. The detection rate of DiF in COPD group was 51.4% in the control group and 61.7% in the control group, similar to the detection rate of H / L. The article also explores the reason why EMGdi power spectrum of some subjects moved to high frequency after DiF instead.