Chest
Clinical Investigations: Sleep and BreathingGroup Education Sessions and Compliance With Nasal CPAP Therapy
Section snippets
MATERIALS AND METHODS
Seventy-three patients were identified as using CPAP via nasal mask or pillows in April 1994 at the Veterans Affairs Medical Center in Providence, RI. All patients had been diagnosed as having OSA, either by attended afternoon nap polysomnography study or by portable polysomnography (Edentec; Eden Prairie, Minn) overnight study. Nap studies monitored heart rate, oxygen saturation, two-lead EEG, genioglossus electromyogram, extraocular eye movements, chest wall excursion by impedance, and nasal
RESULTS
Thirty-four patients attended CPAP clinic and had sufficient meter readings to calculate hours per night of CPAP use before and after their first clinic visit. The characteristics of these patients are listed in Table 1. All patients were male and of a wide range of ages. Mean AHI was 34 prior to treatment. The total time reviewed for the duration of the study averaged >3 years. Mean number of CPAP clinics attended was four.
Figure 1 shows the hours per night of CPAP machine operation. The mean
DISCUSSION
In this retrospective chart review, we assessed CPAP nightly use by patients who attended a CPAP clinic designed to educate and encourage patient compliance with prescribed CPAP therapy. The results demonstrated that nightly CPAP use improved and that this improvement was sustained over years in patients who attended at least one CPAP clinic. Significantly more patients had a >2 h increase in nightly CPAP use than had a nightly decrease of at least 2 h. Patients receiving supplemental oxygen
ACKNOWLEDGMENTS
The authors thank Richard Millman, MD, for helpful discussions and William Silvia, RN, and Jayne Matoian, RRT, Vanguard Home Medical Care, for excellent assistance with patient education.
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Partially supported by a Department of Veterans Affairs Merit Review Grant, by NHLBI Grant HL34009, and by Glaxo-Wellcome, Inc.
Some data presented at the American Thoracic Society annual meeting, May 1995, and published in abstract form in the American Journal of Respiratory and Critical Care Medicine (1995; 151:A681).