Abstract: Introduction : COPD remains underdiagnosed in primary health care ,it is due to underutilization of spirometer,which is essential in the diagnosis of COPD.High cost of equipment,need of technically trained personnel to perform spirometry,limited availability contribute lo lack of spirometry in rural areas.Where as some people have difficulty in reaching FVC in spirometry.. It was found that 6 seconds was sufficient to obtain 99% of FVC even for spirograms with FEV1/FVC as low as 50%. Aim : To evaluate the utility of FEV1/FEV6 ratio as a surrogate to FEV1/FVC in diagnosis of COPD,To emphasize the importance.....
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