Drug-induced Sleep Endoscopy: A New Gold Standard for Evaluating OSAS? Part II: Results

Surgical results in obstructive sleep apnea syndrome (OSAS) vary greatly, whatever the surgical technique or site. Most authors agree that rigorous patient selection is logical and mandatory. Drug-induced sleep endoscopy (DISE) was introduced in 1991 and has been rediscovered and used extensively since the 2000s. It attempts to mimic natural sleep in order to observe the upper airway on flexible endoscopy in a situation in which obstruction may occur. A review of the DISE literature was performed, and is reported in two parts. The present second part reports DISE results concerning obstruction sites, impact on treatment efficacy and the consequent indications for this exploration.