Chronic obstructive pulmonary disease Assessment Test in assessing of patients with chronic obstructive pulmonary disease: there is a relationship with activities of daily living and mortality predictor index? A cross-sectional study

Abstract

The aim of this study was to investigate if there is a relationship between the impact of Chronic Obstructive Pulmonary Disease (COPD) on health status and the level of dyspnea in Activities of Daily Living (ADL) and the mortality predictor index in patients undergoing Pulmonary Rehabilitation (PR). It is a cross-sectional study in which 32 patients with moderate to very severe COPD (23 men; 66.6±12.0 years; FEV1: 40.6±15.6% predicted) were assessed by: COPD Assessment Test (CAT), Body Mass Index (BMI), six-Minute Walking Test (6MWT), London Chest Activity of Daily Living Scale (LCADL), modified Medical Research Council (mMRC) and BODE Index (Body mass index, airflow Obstruction, Dyspnea and Exercise capacity). The CAT score presented moderate correlation with the mMRC questionnaire (r=0.35; p=0.048), total score of LCADL (r=0.60; p<0.001) and total score LCADL percentage (r=0.57; p=0.001). Only the total score of LCADL is able to predict the CAT questionnaire scores (p<0.05; r²=0.61). There were no significant correlations between CAT and BODE index, BMI, FEV1 and 6MWT. Thus, the higher the level of dyspnea in ADL, the greater the impact of COPD on the patient's health status. However, this is not true in relation to mortality prognosis in patients with COPD in PR.