Ultrasonographic Assessment of Diaphragmatic Excursion and its Correlation with Spirometry in Chronic Obstructive Pulmonary Disease Patients

INTRODUCTION: Chronic obstructive pulmonary disease (COPD) is a common disease. Spirometry is a standard method of assessment of severity of COPD. We evaluate utility of diaphragmatic excursion using ultrasonography in COPD patients and compare this technique with spirometry. METHODS: Twenty-six COPD patients and 18 self-reported healthy controls were included in this study. After taking the sociodemographic data, measurement of diaphragm excursion was done using M-mode and B-mode ultrasound. Lung function was assessed by spirometry. RESULTS: In the COPD group, diaphragmatic excursion was found to be reduced, and it correlates with forced expiratory volume in 1 s (FEV1)/forced vital capacity, whereas it did not correlate with FEV1. CONCLUSION: Ultrasound assessment of diaphragmatic excursion is an easy, noninvasive, and readily available diagnostic tool and correlates with spirometry in estimation of severity of COPD.