Indian Journal of Public Health

ORIGINAL ARTICLE
Year
: 2022  |  Volume : 66  |  Issue : 5  |  Page : 12--16

Prevalence of overlap syndrome in patients with obstructive sleep apnea in a quaternary care center of Kerala


Sreeraj Nair1, Tisa Paul1, Asmita Anilkumar Mehta2, Nithya Haridas3, Akhilesh Kunoor5, Nidhi Sudhakar4 
1 Senior Resident, Department of Respiratory Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeethem, Kochi, Kerala, India
2 Clinical Professor and HOD, Department of Respiratory Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeethem, Kochi, Kerala, India
3 Associate Professor, Department of Respiratory Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeethem, Kochi, Kerala, India
4 Junior Resident, Department of Respiratory Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeethem, Kochi, Kerala, India

Correspondence Address:
Asmita Anilkumar Mehta
Department of Respiratory Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeethem Ponekkara, Kochi - 682 041, Kerala
India

Background: The coexistence of obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD) is termed “Overlap syndrome (OS).” Objectives: The present study aimed at estimating the prevalence of OS among patients diagnosed with OSA. Methods: It was a prospective observational study conducted on patients presenting to respiratory medicine outpatient department (sleep clinic) with symptoms of sleep-disordered breathing and was found to have OSA by overnight polysomnography. These patients were then subjected to spirometry to diagnose COPD. Results: The prevalence of OS in the study population was found to be 41.3%. Excessive daytime sleepiness was found to be higher in overlap group patients (P = 0.033), the difference was statistically significant. The mean age (59.9 ± 9.6 years) was found to be high in the OS group compared to those without the same. The mean forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), and FEV1/FVC (pre- and postbronchodilator) spirometry parameters were found to be lower in patients with OS. Conclusion: The study showed that the prevalence of OS in the present study was 41.3%. Excessive daytime sleepiness and age >60 years were risk factors for OS in a patient with OSA. OS patients had lower pulmonary function values.


How to cite this article:
Nair S, Paul T, Mehta AA, Haridas N, Kunoor A, Sudhakar N. Prevalence of overlap syndrome in patients with obstructive sleep apnea in a quaternary care center of Kerala.Indian J Public Health 2022;66:12-16


How to cite this URL:
Nair S, Paul T, Mehta AA, Haridas N, Kunoor A, Sudhakar N. Prevalence of overlap syndrome in patients with obstructive sleep apnea in a quaternary care center of Kerala. Indian J Public Health [serial online] 2022 [cited 2022 Dec 4 ];66:12-16
Available from: https://www.ijph.in/article.asp?issn=0019-557X;year=2022;volume=66;issue=5;spage=12;epage=16;aulast=Nair;type=0