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Lung India. 2012 Oct;29(4):332-5. doi: 10.4103/0970-2113.102808.

Subjective assessment of quality of sleep in chronic obstructive pulmonary disease patient and its relationship with associated depression.

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1
Department of Tuberculosis and Respiratory Diseases, Mahatma Gandhi Institute of Medical Sciences, Sevagram, Wardha, Maharashtra, India.

Abstract

BACKGROUND:

The quality of sleep in chronic obstructive pulmonary disease (COPD) patient from India has not been studied. Aim of this study was evaluation of subjective assessment of sleep quality in stable COPD patients and its relationship with associated depression.

MATERIALS AND METHODS:

Forty clinically stable COPD patients were recruited from outpatient department and their disease status was classified as per Global Initiative for Chronic Obstructive Lung Disease guideline. Presence of depression was assessed by administering Patient Health Questionnaire (PHQ)-9 and subjective quality of sleep was measured by Pittsburgh Sleep Quality Index (PSQI).

RESULTS:

All study subjects were male and mean age of study population was 62.2 ± 9.2 years, 12 patients (30%) in stage II, 19 patients (47.5%) in stage III and 9 patients (22.5%) in stage IV were enrolled. All subjects had poor sleep quality with the median global Pittsburgh Sleep Quality Index score 11. PHQ-9 score was significantly correlated with daytime function and global PSQI score (P<0.01). No correlation of global PSQI score with severity of COPD was observed.

CONCLUSION:

The prevalence of poor sleep quality among COPD patients is high. Irrespective of severity of airflow obstruction, the presence of depression in COPD is a risk factor for poor sleep quality.

KEYWORDS:

COPD; PHQ-9; PSQI; depression; sleep quality

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