The correlation of sleep quality on symptoms and lung function in COPD patients at the Harum Melati Clinic, Pringsewu, Lampung Province, Indonesia

Abstract

Introduction: Good quality sleep of is very important for COPD patients. Unfortunately, it tends to be poor in patients with severe COPD. We hypothesized that quality sleep in COPD patients was correlated with symptoms and lung function.

Aim: This study points out the relationship between sleep quality, symptoms and lung function of COPD patients in Harum Melati Clinic, Pringsewu, Lampung, Indonesia.

Methods: A descriptive-analytic study with a cross-sectional approach was undertaken on 203 COPD patients. Spirometry was performed for measuring lung function. Modified British Medical Research Council (mMRC) questionnaires was enrolled to determine the symptoms. The patient’s sleep quality was categorized using the Pittsburgh Sleep Quality Index (PSQI) scale into good sleep quality (PSQI score < 5) and poor sleep quality (PSQi score > 5). The Spearman correlation test was employed to find the correlation between variables.

Results: Patients’ age was 62.4 ± 7.3 years, most of them are male. There were 114 (70.9%) patients who had good sleep quality and 59 patients (29.1%) who had poor sleep quality. There was a moderate strength positive correlation between sleep quality and COPD symptoms (p-value = 0.001, correlation value = 0.437). Meanwhile, there was very strong positive correlation between sleep quality and lung function (p-value = 0.001, correlation value = 0.879).

Conclusions: Sleep quality in COPD patients was correlated with symptom and lung function. Enhancement in diagnostic and treatment of sleep problems in COPD patients should be prioritized in the daily management of these patients.