Division of Pulmonary, Allergy, and Critical Care, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Respir Care. 2010 Apr;55(4):443-52.
We developed a systematic method of cleaning and calibration-checking for the pneumotachometer tube of the SpiroPro portable spirometer; this method maximized spirometry accuracy in a population-based study in a remote area of Nepal.
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.
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.
In a remote field setting the SpiroPro 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 L/s, are essential for precise and accurate spirometry with the SpiroPro. Reusing the SpiroPro pneumotachometer in a remote setting may impose measurement bias. Single use of SpiroPro pneumotachometers, albeit more costly, will provide better data.
我们开发了一种系统的方法来清洁和校准检查 SpiroPro 便携式肺活量计的测压管；这种方法最大限度地提高了尼泊尔偏远地区一项基于人群的研究中的肺活量计准确性。
我们测试了 10 个工厂校准的测压管。每次使用都包含一整套根据美国胸科学会 (ATS) 肺活量计标准进行的肺活量计操作。
根据 ATS 标准，测压计在经过 5-9 次消毒后仍保持准确，但在第一次消毒后开始向不准确漂移。所有测压计在经过 10 次消毒后都变得不准确，不符合 ATS 标准。
在偏远的实地环境中，SpiroPro 测压管在根据 ATS 标准变得不准确之前，可以清洁和重复使用 5-9 次。在蒸馏水的严格冲洗和在各种流速高达 12 L/s 下的重复校准检查对于使用 SpiroPro 进行精确和准确的肺活量计测量至关重要。在偏远环境中重复使用 SpiroPro 测压计可能会产生测量偏差。虽然成本更高，但使用 SpiroPro 测压计的一次性使用将提供更好的数据。
