慢性阻塞性肺病患者气速指数测定

Diagnostic significance of AVI in the patients with chronic obstructive pulmonary disease

目的:探讨气速指数(air velocity index,AVI)判定慢性阻塞性肺病(COPD)的价值。方法:常规检查 74例COPD患者的肺功能,包括第1s用力呼气容积(FEV1)。肺活量(VC)、最大自主通气(MVV)、呼气峰流速(PEFR)及其FEV1占预计值%、AVI。对有关指标做相关性分析。结果:PEFR,FEV1及FEV1占预计值%均与AVI呈显著性正相关(r分别为0.540 3,0．565 0和0．540 3,P均0．0001)。结论:AVI对判定COPD具有定性及定量价值。

Aim:To probe dignostic significance of AVI(air velocity index) in the patients with chronic obstructive pulmonary disease. Methods: Lung functions were measured in the 74 COPD patients, inclutling FEV 1, VC, MVV, FEV 1 % , PFFR and AVI. Results:There was a significant postive correlation between PEFR and AVI ( r = 0.540 3, P < 0.0001); FEV1 and AVI( r = 0.565 0,P< 0.000 1); FEV1% and AVI( r = 0.560 3, P < 0.000 1). Conclusion: AVI is an important parameter in the digno-sis of COPD.