Lege Artis Medicinae

[Long-term CPAP compliance among Sleep Apnea Patients at the Sleep Laboratory of the Hungarian Defense Forces Medical Center ]


MARCH 20, 2019

Lege Artis Medicinae - 2019;29(03)

DOI: https://doi.org/10.33616/lam.29.018

[Obstructive sleep apnea syndrome (OSAS) is the most common sleep disorder, with a prevalence of 2-4% in the overall popula­tion. It is a risk factor for cardiovascular diseases and its daytime symptoms significantly impair the patients’ quality of life and increase the risk of work and road accidents. Its first-line treatment is the CPAP device (Continuous Positive Airway Pres­sure) the effectiveness of which is significantly determined by the compliance of the patient. Although the issue of compliance in such treatment is a very important factor, long-term studies including a large number of patients have not been published yet, and there are no known data about it in Hungary. OBJECTIVE - Examining the long-term compliance of CPAP among OSAS patients in a sleep laboratory in Hungary. METHOD - 3403 OSAS patients were selected for our study between January 1, 2007, and September 30, 2017. The diagnosis and titration of effective CPAP pressure were determined by polysomnography. Patients were controlled after 2 months of therapy and then every 6 and 12 months. During the care, their compliance value was determined by data downloaded from their device's memory card. RESULTS - The mean age (± SD) of patients was 59.0 (± 10.5) years, most of them were male, 2676 (78.6%), their average body mass index (BMI) was 32.6 (± 5.25) kg/m2, their average Epworth Sleepiness Scale score was 11.4 (± 5.0), their average Apnea-Hypopnoe index was 51.0 (± 19.5) events/hour. The average usage time of the CPAP device was 5.0 (± 1.9) hours. 72.3% of the patients used the device for over 4 hours and 27.7% used it for less than 4 hours. 34.7% of the patients used the device for more than 6 hours. The Epworth Sleepiness Score showed a significant and dose-dependent improvement over CPAP treatment, with a greater improvement among patients who used the machine for longer hours. The highest score improvement was achieved by users who used CPAP between 6-7 hours, averaging 7.3 (± 3.2) points (p <0.001). CONCLUSIONS - Our present study shows that high average compliance can be achie­ved among well-adjusted and well-maintained patients. ]


  1. Magyar Honvédség Egészségügyi Központ Alvásdiagnosztikai és Terápiás Központ
  2. Semmelweis Egyetem, ÁOK, Családorvosi Tanszék



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