Positional therapy in the management of positional obstructive sleep apnea—a review of the current literature

More than 50% of obstructive sleep apnea (OSA) patients have worsening of their OSA in the supine position (positional obstructive sleep apnea [POSA], commonly defined as supine to non-supine apnea hypopnea index (AHI) ratio of ≥ 2). Positional therapy (PT) aims to prevent patients from sleeping in the supine position. One of the major limiting factors to the routine use of PT in clinical practice is the lack of validated tools to measure...