Jáuregui W O
Servicio de Neumonología, Sanatorio Metropolitano Central, Buenos Aires.
Medicina (B Aires). 1993;53(1):21-8.
This paper refers to a Multicentric Quality Control Program on spirometry performed in Buenos Aires city. Seventeen spirometers (9 water seal, dry rolling seal or bellows, 5 flow detection type and 3 peak-flow meters) owned by 8 different Hospitals were tested. Reference values were obtained by means of an Explosive Decompression Simulator calibrated against a Stead-Wells bell spirometer, which meets ATS recommendations. Only 42% (6/14) of the tested spirometers agreed with the ATS minimal requirements with regard to FVC and FEV1; volumetric spirometers performed better than flow detectors. The maximal error was 11% when measuring a FVC of 3.41 L. Peak flow showed a very high inter-instrument coefficient of variation. The need of frequent quality control checks is stressed.
本文涉及在布宜诺斯艾利斯市开展的一项关于肺活量测定法的多中心质量控制项目。对8家不同医院拥有的17台肺活量计（9台水封式、干式滚动密封或波纹管式，5台流量检测型和3台峰值流量计）进行了测试。参考值通过一台根据符合美国胸科学会（ATS）建议的Stead-Wells钟形肺活量计校准的爆炸减压模拟器获得。在用力肺活量（FVC）和第一秒用力呼气容积（FEV1）方面，仅42%（6/14）的被测肺活量计符合ATS的最低要求；容积式肺活量计的表现优于流量检测仪。在测量3.41L的FVC时，最大误差为11%。峰值流量显示仪器间变异系数非常高。强调了频繁进行质量控制检查的必要性。
