Ng T P, Tan W C, Hui K P
Department of Community, Occupational and Family Medicine, National University of Singapore.
Ann Acad Med Singap. 1995 May;24(3):403-10.
The performance of the Micro Spirometer was compared with that of the Vitalograph by assessing the extent of agreement between the instruments and the repeatability of measurements with each instrument. The Micro Spirometer tended to give lower readings of forced expiratory volume in one second (FEV1), forced vital capacity (FVC) and peak expiratory flow rate (PEFR) than the Vitalograph, with wide limits of agreement. The values of these ventilatory functions measured with the Micro Spirometer were, therefore, not directly comparable with those obtained from the Vitalograph, and it is also not satisfactory to predict readings on the Micro Spirometer from those made on the Vitalograph. In the management of asthma patients, the PEFR would still be preferably measured with the mini Wright peak flow, given its low cost and established reliability compared with the standard Wright peak flow meter. The Micro Spiromoter has the practical advantages of portability, ease of operation and relative cheapness for the baseline and long-term assessment of FEV1 and FVC in ambulatory care, as well as in epidemiological studies. However, local users should not employ reference values provided by the manufacturer or those published in the literature, but those reported in this paper.
通过评估两种仪器之间的一致性程度以及每种仪器测量的重复性，对微型肺活量计和伟康肺量计的性能进行了比较。微型肺活量计测得的一秒用力呼气量（FEV1）、用力肺活量（FVC）和呼气峰值流速（PEFR）往往低于伟康肺量计，一致性范围较宽。因此，用微型肺活量计测得的这些通气功能值与用伟康肺量计测得的值无法直接比较，根据伟康肺量计的读数来预测微型肺活量计的读数也并不理想。在哮喘患者的管理中，鉴于与标准赖特峰值流量计相比，小型赖特峰值流量计成本低且可靠性已得到验证，仍最好用其测量PEFR。微型肺活量计具有便携、操作简便且相对便宜的实际优势，可用于门诊护理以及流行病学研究中FEV1和FVC的基线和长期评估。然而，当地用户不应采用制造商提供的或文献中公布的参考值，而应采用本文报告的参考值。
