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本文对122例COPD患者在测定肺功能同时做了呼气CO_2曲线描记,同时对7例哮喘病人做了用药前后比较,11例患者做了吸氧前后比较,着重对C段斜率与肺功能关系进行了分析,探讨 C 段斜率升高机制。1.肯定了 CO_2曲线是一项简便诊断 COPD 及估计病情轻重的方法;2.曲线∠BC 加大与通气功能障碍关系,∠CD 减少与 V/Q 不均有关;3.∠BC 与 V/75、FEV_1/FVC 关系最密切,∠CD 与Tco,a—ADO_2关系最密切;4.曲线陡直与 PaCO_2升高呈正相关,随着其值加大,斜率加大;5.从肺功能综合指标看 V/Q 不均是 C 段斜率高的主要因素。
In this paper, 122 patients with COPD in the determination of lung function while doing breath CO_2 curve tracing, at the same time on the seven asthma patients before and after doing the drug comparison, 11 patients before and after doing oxygen comparison, focusing on the C segment slope and lung function The analysis was carried out to investigate the mechanism of slope increase in section C. 1. It is affirmed that CO 2 curve is a simple method to diagnose COPD and estimate disease severity; 2. Curve ∠BC increases the relationship with ventilatory dysfunction, 减CD decrease is related to V / Q unevenness; 3. ∠BC and V / 75, FEV_1 / FVC is the most closely related, ∠CD and Tco, a-ADO_2 most closely; 4 curve steep and PaCO_2 increased positive correlation, as its value increases, the slope increases; 5 from the pulmonary function comprehensive Indicators to see V / Q unevenness is the main factor C section of the high slope.