Once asleep again, the muscles relax and the airway becomes blocked, cutting off the airway again. This cycle can occur hundreds of times per night. Obstructive Sleep Apnea is the most common form of sleep apnea. It ranges in severity from mild to moderate, to severe. Other forms of sleep apnea include Central and Mixed Sleep Apnea.
HDP High Definition Porcelain. Created to signify a revolutionary new product category, HDPÂ® utilizes the most technically advanced glazing system in the industry today, digital printing.
PPP encapsulation uses a variant of the ISO High Level Data Link Control (HDLC) protocol to encapsulate multi-protocol datagrams as the payload of PPP frames. The PPP header and trailer is shown in Figure 7.10 and contains the following fields: