LAUSR

BACKGROUND Although pulmonary rehabilitation programmes (PRPs) benefit patients with chronic obstructive pulmonary disease (COPD), poor adherence to these programmes is common. OBJECTIVE This study aimed to analyse the factors associated with poor long-term adherence after completing a PRP. METHOD We conducted a retrospective study of 70 patients with COPD who performed an 8-week outpatient PRP that included 24 sessions of aerobic training, skeletal muscle resistance exercises, physiotherapy and COPD education. The study classified the patients into 2 groups: (1) long-term adherence and (2) long-term non-adherence to the PRP. We considered long-term non-adherence when the patient did not attend the 32 weeks follow-up visit after beginning the PRP. We measured the degree of dyspnoea, quality of life, physical activity, anxiety-depression status, submaximal exercise capacity and COPD exacerbations in both groups. RESULTS The patients' median age was 69.6 [63.8-75.0] years, and 71.4% were men. The median forced expiratory volume in 1 second was 60.0 [47.7-68.0] % of that predicted. We observed total COPD exacerbations and severe COPD exacerbations in the last year in 32 (45.7%) and 22 (31.4%) patients, respectively. Dyspnoea, physical activity and quality of life significantly improved after completing the PRP. Long-term non-adherence to the PRP was observed in 32 (45.7%) patients. In the single regression model, severe COPD exacerbations (p = 0.04) and dyspnoea (p = 0.03) were associated with long-term non-adherence to the PRP. In the multiple regression model, only severe COPD exacerbations remained as an associated factor (OR 2.7; 95% CI 1.1-8,1; p = 0.04). CONCLUSION Approximately half of patients who complete PRPs present long-term non-adherence to the programme. Severe COPD exacerbations are associated with long-term non-adherence.