用力呼气容积(forced expiratory volume,FEV)指一次最大吸气后,再尽力尽快呼气时, 在一定时间内所能呼出的气体量.
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...支气管哮喘病人中快速起效的对比研究 3．3．2主要测定指标 （1）第1秒用力呼气容积（forcedexpiratory volumeinonesecond，FEVl）：最大 吸气至肺总量位后ls内的快速呼出量，单位为L。
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第一秒用力呼气容积 FEV ; FEVI ; Forced expiratory volume in one second
一秒用力呼气容积 forced expiratory volume in one second ; FEV
一秒钟用力呼气容积 FEVI
秒用力呼气容积 forced expiratory volumel ; FEV ; FEVL
其用力呼气容积 forced expiratory volume ; FEV
1秒用力呼气容积 forced expiratory volumel ; forced expiratory volume in 1 second
秒钟用力呼气容积 FEV ; forced expiratory volume
1秒钟用力呼气容积 forced expiratory volume in 1 second ; forced expiratory volume
然而，在症状评分及一秒用力呼气容积均显示INCS倾向具有疗效。
However, for symptom scores and forced expiratory volume in one second, the trend favoured a beneficial effect of INCS.
INCS有改善气喘症状及一秒用力呼气容积的趋势，但未达统计学意义。
While INCS tended to improve asthma symptoms and forced expiratory volume in one second, the results did not reach significance.
主要终点为自基线至24周的预测1秒钟用力呼气容积（FEV1）百分比的估计平均变化。
The primary end point was the estimated mean change from baseline through week 24 in the percent of predicted forced expiratory volume in 1 second (FEV1).
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