A consistent bedtime routine is likely key to helping people with obstructive sleep apnea adhere to their prescribed treatment, according to Penn State researchers.
Obstructive sleep apnea (OSA) occurs when the upper airway collapses during sleep. It is the most common type of sleep-disordered breathing, and chances of it occurring are greater in obese people. OSA is the second most prevalent sleep disorder among adults.
The first line of treatment for sleep apnea is a noninvasive, in-home treatment called CPAP -- continuous positive airway pressure therapy. However, if patients do not use the treatment consistently for the majority of sleep hours each night, it cannot help.
"It has been shown that routine is important for adherence when it comes to medication, and routine is also relevant to CPAP adherence," said Amy M. Sawyer, assistant professor of nursing, who will report her results at SLEEP 2013, the annual meeting of the Associated Professional Sleep Societies, in Baltimore on June 5.
The researchers define CPAP adherence as using the treatment for at least four hours each night. They found that if a patient's bedtime was consistent within 45 minutes, they were significantly more likely to use the CPAP machine for at least four hours each night. A patient whose bedtime was inconsistent -- varying by an hour and five minutes or more -- was much less likely to adhere to treatment.
The researchers found that adults whose bedtime varied by more than 75 minutes or more per night, were 3.2 times more likely to use CPAP less than four hours per night after one month of treatment. For every 30-minute increase in bedtime variability, or inconsistency, the odds of nonadherence to CPAP treatment were 1.8 times greater.
Sawyer and her colleague Tonya King, professor of public health sciences, Penn State College of Medicine, are the first to study the consistency of bedtime and its correlation to treatment adherence.
|Contact: Victoria M. Indivero|