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Updated: Jul 8, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Obstructive sleep apnea syndrome
L Michael Prisant1, Thomas A Dillard, Amy R Blanchard
1Departments of Medicine, Medical College of Georgia, Augusta, GA 30912, USA. mprisant@mcg.edu
Abstract:
Obstructive sleep apnea syndrome is caused by upper airway collapse during inspiration, causing intermittent hypoxemia, hypercapnia, acidosis, sympathetic nervous system activation, and arousal from sleep. Nighttime blood pressure is higher, but unexpectedly, daytime hypertension occurs. The prevalence of hypertension is very high and the incidence of hypertension increases as the number of apneic and hypopneic events per hour rises. Obesity is a major predisposing factor for the development of obstructive sleep apnea. Daytime sleepiness, snoring, and breathing pauses are important symptoms to elicit from the patient or sleep partner. Resistant hypertension is an important clue. Overnight polysomnography is required for diagnosis. Weight loss, avoidance of nocturnal sedatives, cessation of evening alcohol ingestion, and avoidance of the supine position during sleep are initial therapeutic actions in mild obstructive sleep apnea syndrome. Continuous positive airway pressure is the treatment of choice for patients unable to find relief from lifestyle changes. Blood pressure modestly improves with treatment.
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