Hypopneas with arousals: an important feature of central nervous system sympathetic activation in posttraumatic stress disorder Hypopneas with arousals: an important feature of central nervous system sympathetic activation in posttraumatic stress disorder Download Upper airway surgery to rescue the “untitratable” patient with OSA and obesity An elevated leg movement index during sleep in atopic dermatitis and periodic leg movement disorder may be an indication of sympathetic activation common to both