The DRS stands for Drag Reduction System, which enables a car to open its rear wing to limit the downforces on the car. This increases the car's theoretical performance and in theory facilitates passing.
The surgical treatments for obstructive sleep apnea include nasal surgery, palate surgery (including uvulopalatopharyngoplasty [UPPP]), upper airway stimulation therapy, tongue reduction surgery, genioglossus advancement, maxillo-mandibular advancement, tracheostomy, and bariatric surgery.
Sleep apnea can. be improved in some individuals by opening the airway with nighttime CPAP (continuous positive. airway pressure) or BiPAP (bi-level positive airway pressure). Both of these treatment strategies are noninvasive. This type of breathing treatment does not involve. surgery.