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老年人肺通气功能中最大呼气中期流速（ＰＥＦ２５％～７５％测定目前报道尚不多见，本文测定健康老年人与老年慢性阻塞性肺病（ＣＯＰＤ）患者ＰＥＦ，以实测值进行比较，探讨其临床意义。１资料及方法选自１９９７年１０月～１９９８年１０月门诊及住院体检男性老年人。...
The maximum expiratory mid-term flow rate in elderly pulmonary function (PEF25% ~ 75% measurement is currently rare, the paper measured PEF in healthy elderly and elderly patients with chronic obstructive pulmonary disease (COPD), compared with the measured values to explore its Clinical significance .1 data and methods selected from October 1997 ~ October 1998 outpatient and in-hospital physical examination of male elderly ....