Prognostic ability of the distance-saturation product in the 6-minute walk test in patients with chronic obstructive pulmonary disease.

Introduction: The product (DSP) of the distance walked (meters) and minimum oxygen saturation obtained during the 6-minute walk test (6MWT) has been proposed as a predictor of mortality in idiopathic pulmonary fibrosis and in bronchiectasis not related to cystic fibrosis.

Objective: The aim of this study was to determine the DSP's ability to predict mortality in patients with chronic obstructive pulmonary disease (COPD) at the outpatient level and compare it to the BODE index and meters walked in the 6MWT.

Material And Methods: Descriptive observational study in a cohort of patients with COPD being treated at outpatient pulmonology clinics.