Objective to study the clinical application of the peak expiratory flow rate (PEFR) in children with asthma.
目的探讨最大呼气峰流速(PEFR)在儿童哮喘诊治中的临床应用价值。
Objective To build the normal ranges and regression equations of peak expiratory flow (PEF) in normal young, middle aged and old persosn.
目的建立正常老中青年呼气峰流量（PEF）的正常值范围及回归方程。
Indeed, the PDS performed better than FEV1, peak expiratory flow rate, and fraction of exhaled nitric oxide in predicting outcomes after discharge.
事实上，PDS要比FEV1、呼吸峰流速和氧化亚氮呼出率更能预测出院后的结果。
No differences were seen between groups in peak expiratory flow or forced expiratory flow in one second, which improved progressively but then decayed slightly after 24 h.
在峰流速及一秒量方面亦有改善，但在24小时后疗效轻微降低，两组无区别。
Symptom score and pulmonary function expressed as peak expiratory flow(PEF), peak expiratory flow rate (PEFR) and forced expiratory volume in one second (FEV1) were recorded.
观察两组每日症状评分，早、晚最大呼气峰流速测定（PEF），肺功能检查（FEV1）。
Secondary endpoints, including forced expiratory volume in 1 s, peak expiratory flow, use of as-needed medication, and number of nights with awakenings were similar between genotype groups.
次要终点指标包括1秒呼出气量，峰流速，急救用药次数，夜间觉醒次数各基因型组之间均无显著差异。
Secondary endpoints, including forced expiratory volume in 1 s, peak expiratory flow, use of as-needed medication, and number of nights with awakenings were similar between genotype groups.
次要终点指标包括1秒呼出气量，峰流速，急救用药次数，夜间觉醒次数各基因型组之间均无显著差异。
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