Quirce S, Contreras G, Dybuncio A, Chan-Yeung M
Department of Medicine, University of British Columbia, Canada.
Am J Respir Crit Care Med. 1995 Sep;152(3):1100-2. doi: 10.1164/ajrccm.152.3.7663790.
This is a study of the reliability of peak expiratory flow (PEF) monitoring using a portable computerized peak flow meter, the VMX Mini-log, in 17 subjects referred for suspected occupational asthma. Subjects were requested to monitor their PEF six times daily using the VMX Mini-Log for 2 wk at work and at least 10 d away from work. They were unaware that their readings were stored by the flow meter in addition to the digital readout. Four subjects (22%) were unable to complete the monitoring. The results recorded by the subjects were compared with the results recorded by the VMX. Of those who completed the monitoring, only 55.3% of the records were completely accurate in terms of the value and the timing of the measurements, 23.3% were inaccurate either in terms of the recorded value or of the timing of the measurement, and the remainder were fabricated results (not recorded by the Mini-Log). Our results suggest that PEF monitoring using ordinary peak flow meters for assessment of work-relatedness of asthma has limitations and is not reliable.
这是一项关于使用便携式电脑峰值流量计VMX Mini-log对17名疑似职业性哮喘患者进行呼气峰值流量（PEF）监测可靠性的研究。要求受试者在工作期间每天使用VMX Mini-Log监测PEF六次，持续2周，并且在离开工作岗位至少10天期间也进行监测。他们不知道除了数字读数外，流量计还会存储他们的读数。4名受试者（22%）无法完成监测。将受试者记录的结果与VMX记录的结果进行比较。在完成监测的受试者中，就测量值和测量时间而言，只有55.3%的记录完全准确，23.3%的记录在记录值或测量时间方面不准确，其余为伪造结果（Mini-Log未记录）。我们的结果表明，使用普通峰值流量计进行PEF监测以评估哮喘与工作的相关性存在局限性且不可靠。
