Association between six-minute walk tests with lung diffusion capacity for carbon monoxide in chronic respiratory disease: A cross-sectional study

Introduction and Aim: Interstitial lung disease (ILD) is a heterogeneous disorder that share common clinical, radiographic, physiological features. Most patients with ILD usually experience an exertion – induced dyspnea as first symptom. A noticeable change in oxygen saturation was noticed while exercise. The study objective to ascertain the functional parameter correlates best by comparing age, sex, smoking history different pattern. Materials Methods: proforma (including Six Minute Walk Test Pulmonary Function diffusion capacity) for one-year period (September 2014 - November 2015) taken 40 included participants. includes Lung diseases diagnosed radiological spirometric parameters. tests sensitivity specificity of six-minute walk test versus carbon monoxide diffusing ability. Results: total participants were (19 males 21 females). 12 smokers 28 non-smokers. 20 belonged Usual Pneumonia (UIP) pattern, 14 Non-Specific (NSIP) 6 others. mean±SD parameters FEV1/FVC=101.71±16.752, FVC=55.29±17.322, FEV1=57.66 ± 20.246. Conclusion: There no statistical significance between gender, patterns. Spirometer capacity indices co-relate NSIP pattern our study. In resource limited setting, clinical assessment walking distance spirometry should or need not be supplemented DLCO severity assessment.