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本文报告96例密闭稀释法功能残气量测定结果。96例中,肺气肿病人67例(甲组),非肺气肿病人及健康人29例(乙组)。在残气/总肺量比值、最大呼气中段流速、1秒用力呼气量、肺活量及最大通气量这5项指标上,甲组与乙组皆有非常显著的差异(P<0.01)。残气/总肺量比值与最大呼气中段流速在肺气肿病人中具有较高的敏感性,但特异性欠佳。作者同意将残气/总肺量比值增大(>35％)列为诊断肺气肿的综合指标之一。
This article reports 96 cases of closed-end dilution method of functional residual gas measurement results. In 96 cases, 67 patients with emphysema (group A), 29 patients with non-emphysema and 29 healthy subjects (group B). There were significant differences (P <0.01) between group A and group B on the five indicators of residual / total lung volume, maximum expiratory flow velocity, forced expiratory volume of 1 second, vital capacity and maximum ventilation. The residual / total lung volume ratio and maximum expiratory midstream flow rate are highly sensitive but poorly specific in emphysematous patients. The authors agree that an increase in residual / total lung volume ratio (> 35%) is listed as one of the diagnostic criteria for emphysema.