A notification system monitors changes in air flow channeled between a positive air pressure generator and {HEAD ~ a CPAP mask} supplying {TAIL ~ positive airway pressure} to a patient during treatment of sleep apnea 
supplying
A notification system monitors changes in air flow channeled between a positive air pressure generator and { HEAD ~ a CPAP mask } supplying { TAIL ~ positive airway pressure } to a patient during treatment of sleep apnea
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH