In-Laboratory Polysomnography Worsens Obstructive Sleep Apnea by Changing Body Position Compared to Home Testing.

(1) Background: Home sleep apnea testing, known as polysomnography type 3 (PSG3), underestimates respiratory events in comparison with in-laboratory polysomnography type 1 (PSG1). Without head electrodes for scoring sleep and arousal, in a home environment, patients feel unfettered and move their bodies more naturally. Adopting a natural position may decrease obstructive sleep apnea (OSA) severity in PSG3, independently of missing hypopneas associated with arousals.

Obstructive sleep apnea: is there a difference between vertical and horizontal laryngectomy?

Unlabelled: Partial laryngectomy is used in the treatment of laryngeal cancer. Structural alterations of the upper airway arising from partial laryngectomy can cause obstructive sleep apnea (OSA).

Objective: To compare the prevalence and severity of OSA in patients submitted to horizontal and vertical partial laryngectomy and assess the role of spirometry for these patients.