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 is a common sleep disorder characterized by brief interruptions of breathing during sleep. These episodes usually last 10 seconds or more and occur repeatedly throughout the night.dditional symptoms of sleep apnea include restless sleep, loud snoring (with periods of silence followed by gasps), falling asleep during the day, morning headaches, trouble concentrating, irritability, forgetfulness, mood or behavior changes, anxiety, and depression.