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.
Diagnosing and Treating Sleep Apnea. 1  1. Find out if you are experiencing sleep apnea. If you experience difficulty sleeping, heavy breathing, loud snoring, or heavy drooling, you may have sleep apnea. 2  2. Find out if you are at risk for a blocked airway. Drooling is also a symptom of a blocked airway. 3  3. Lose weight.