// Measurement Variability of Peak Flow: A Laboratory Experiment Comparing Cough Testing Equipment
本研究評估不同設備配置對咳嗽峰流量測量準確度的影響｜結果顯示，面罩導致最大誤差，尤其是類比峰流量計（PFM）低估氣流量達50%｜數位PFM無附加配件時，測量結果與金標準肺阻抗計相當｜結論指出，數位PFM在標準化配置下適合臨床使用，類比PFM與面罩配置則顯著降低準確度。
// This study evaluated how different equipment configurations affect the accuracy of cough peak flow measurements using analog and digital peak flow meters (PFMs) and pneumotachographs. Using a motorized air pump across various airflow resistances, results showed that facemasks caused the largest measurement errors, especially with analog PFMs, which underestimated airflow by up to 50%. Digital PFMs without attachments provided measurements comparable to the gold standard pneumotachograph. The study concludes that digital PFMs are reliable for clinical use if standardized configurations are maintained, while analog PFMs and facemasks may significantly reduce accuracy.
Published 2026年6月29日
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