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VOLUME 61 , ISSUE 3 ( July-September, 2019 ) > List of Articles

Original Article

Mixed Method Model to Assess CPAP Adherence Among Patients with Moderate to Severe OSA

Priya Ramachandran, Uma Devaraj, Sandeepa HS, V Kavitha, K Uma Maheswari, George D Souza

Keywords : Obstructive sleep apnoea, CPAP, Compliance, Adherence

Citation Information : Ramachandran P, Devaraj U, HS S, Kavitha V, Maheswari KU, D Souza G. Mixed Method Model to Assess CPAP Adherence Among Patients with Moderate to Severe OSA. Indian J Chest Dis Allied Sci 2019; 61 (3):119-122.

DOI: 10.5005/ijcdas-61-3-119

License: CC BY-NC 4.0

Published Online: 18-11-2022

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Background: Continuous positive airway pressure (CPAP) is an effective therapy for obstructive sleep apnoea (OSA). Despite proven benefits of CPAP in OSA, adherence has been sub-optimal. The present study was designed to evaluate the compliance of CPAP therapy and factors affecting it in patients with moderate to severe OSA. Methods: Patients diagnosed to have moderate/severe OSA (apnoea-hypopnoea index [AHI] > 15) during the period April to December 2015 were evaluated using a pre-defined questionnaire on the number of hours of usage, number of nights per week usage and challenges faced in using CPAP; Epworth Sleepiness Score was recorded. CPAP usage was documented from the downloaded data from their CPAP machines. Results: Forty patients (mean age 50.6±11.4 years; 29 men) were studied. Their average body mass index (BMI) was 33.2 Kg/m2. Of these, 31 had severe OSA (mean AHI 47.8 per hour). The objective usage of CPAP among patients with OSA was less by 89 minutes when compared with perceived duration (p=0.001). Twenty patients had used the device for less than four hours per night. Patients reported social factors, dryness of mouth, not reapplying machine after nocturia, power shut down and reduced motivation as reasons for non-adherence to use CPAP. Conclusions: Despite the recognised benefits of CPAP, the acceptance and adherence with therapy remains a considerable barrier. Objective assessment of CPAP compliance should be a part of routine follow-up in patients with OSA.

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