Pitfalls of spirometry.
Pitfalls of spirometry.
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肺活量测定法的陷阱。
DOI：
10.1097/00043764-198101000-00016
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
Lewis,BM
中科院分区：
文献类型：
--
作者：
Lewis,BM
即使技术人员是专家，许多呼吸描记图也不能正确解释。可解释的肺量图的标准是（1）完全吸气，（2）快速达到最高流量，（3）随着呼气流量持续下降，（4）平稳、逐渐终止，以及（5）呼气持续三秒或更长时间。违反这些标准会导致呼气不有力时的“假性阻塞”，图形记录开始较晚时的“隐性阻塞”，以及两种“假性限制”，一种是由于吸气不足，另一种是由于呼气过早终止。一个“决策树”处理大量的肺活量数据。
Many spirograms cannot be interpreted properly even when the technician is expert. The criteria of an interpretable spirogram are (1) full inspiration, (2) quick attainment of highest flow, (3) continuous decrease in flow with expiration, (4) smooth, gradual termination, and (5) expiration lasting three seconds or more. Violation of these criteria leads to "pseudo-obstruction" when expiration is not forceful, to "concealed obstruction" when the graphic record is started late and to two kinds of "pseudo-restriction," one due to inadequate inspiration and the other to premature termination of expiration. A "decision tree" for dealing with large volumes of spirometric data is presented.