A single-centre, observational, retrospective study to evaluate coexistence of cardiovascular comorbidities and obstructive sleep apnoea in South Indians using apnea link air home sleep testing device

Praveen Kumar Kulkarni, Hiren Prajapati


Background: The aim of the study was to explore whether there is a relationship between Cardiovascular (CV) comorbidities and the prevalence and severity of Obstructive sleep apnea (OSA).

Methods: Secondary data analysis of 146 patients with suspected sleep-disordered breathing was conducted who were presented to the department of medicine, KIMS Hospital, Hyderabad, from June 2021 to November 2021. Participants aged ≥18 years were included in the analysis. Demographic details, clinical history, comorbidities, medication history, were analyzed. AHI score, ODI (Oxygen desaturation index) score and average O2 saturation were recorded with the help of a home sleep testing device. Data were entered and analyzed with Epi info 7.

Results: The overall prevalence of OSA was 78.8% in patients with suspected sleep-disordered breathing. Prevalence of mild, moderate, and severe OSA was 28.8%, 15.1%, and 34.9%, respectively. Proportions of diabetes and hypertension were significantly high among patients with obstructive sleep apnea. Correlation analysis revealed a weak positive linear relationship (r=0.14) between the number of risk factors and the AHI score.

Conclusions: This study showed high prevalence of OSA among out patients presented with suspected sleep disordered breathing. Hypertension, diabetes and obesity were highly prevalent CV comorbidities among South Indian patients diagnosed with OSA.



Obstructive sleep apnea, Apnea-hypopnea index, Obesity, Hypertension

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