Diagnostic Role of Global Sleep Assessment Questionnaire in Stable Chronic Obstructive Pulmonary Disease Patients
Background:There is a complex interaction among COPD symptoms, sleep problems, ongoing medicines and other comorbidities in COPD patients so it is noteworthy whether the GSAQ may be used in COPD patients in the same way as in general population. We did a study on stable COPD patients with the aim to investigate the utility of GSAQ in stable COPD patients. We also investigated various sleep disorders in stable COPD patients and their relationship with patient’s demographics, smoking status and diseases severity.
Methods: This prospective observational study was carried out on clinically stable COPD patients. A Hindi translation of GSAQ was self-administered by each patient. The sensitivity and specificity of GSAQ in COPD patients were calculated, using diseases defining criteria as the gold standard. The sleep disorders ware also compared to patient demographics, smoking status and diseases severity.
Results: The sensitivity and specificity of GSAQ in identifying insomnia, RLS, daytime sleepiness and anxiety-depression were 91/95%, 91.7/90%, 70.5/79.2% and 81.1/96.5% respectively. In this study the prevalence of sleep disorders was 56.4%. The commonest sleep problem was insomnia (35%) followed by RLS (31%), parasomnia (18%) and sleep apnoea (11.7%). These were no significant difference between GSAQ positive and negative group in patient’s demographics, smoking status and diseases severity. The COPD patients with insomnia had significantly lower FEV1 as compared to those without insomnia.
Conclusion: GSAQ may be used in COPD patients for both screenings and to rule out core intrinsic sleep disorders and depression- anxiety. Sleep disorders are frequent problems in stable COPD patients and insomnia is the most common among them.
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