A Cleaning and Calibration Method for the SpiroPro Portable Spirometer's Pneumotachometer Tube in a Remote Field Study

作者：Baldwin Matthew R; Checkley William^*; Wise Robert A; Khatry Subarna K; LeClerq Steve C; West Keith P Jr

来源：Respiratory Care, 2010, 55(4): 443-452.

• spirometr, portable
• pneumotachometer
• calibration, accuracy, disinfection

BACKGROUND: We developed a systematic method of cleaning and calibration-checking for the pneumotachometer tube of the Spiro Pro portable spirometer; this method maximized spirometry accuracy in a population-based study in a remote area of Nepal. METHODS: We tested 10 factory-calibrated pneumotachometer tubes. Each use consisted of a full set of spirometry maneuvers, per the American Thoracic Society (ATS) spirometry criteria. RESULTS: The pneumotachometers remained accurate, per the ATS criteria, for 5-9 disinfections, but began to drift toward inaccuracy after the first disinfection. All the pneumotachometers had become inaccurate, per the ATS criteria, after 10 disinfections. CONCLUSIONS: In a remote field setting the Spiro Pro pneumotachometer tube can be cleaned and reused 5-9 times before it becomes inaccurate per the ATS criteria. Rigorous rinsing in distilled water and repeated calibration checks, at various flows up to 12 Us, are essential for precise and accurate spirometry with the Spiro Pro. Reusing the Spiro Pro pneumotachometer in a remote setting may impose measurement bias. Single use of Spiro Pro pneumotachometers, albeit more costly, will provide better data.

• 出版日期2010-4