Sleep apnea is defined as a reduction or cessation of breathing during sleep. Apnea hypopnea index ahi the ahi is the number of apneas or hypopneas recorded during the study per hour of sleep. Pin By Cheatography On Cheat Sheets Sleep Apnea Treatment Gold standard osa diagnosis is made through a polysomnogram psg test which uses the apnea hypopnea index ahi as its main defining measure. Sleep apnea measurements . Obstructive sleep apnea. The three types of sleep apnea are central apnea obstructive apnea and a mixture of central and obstructive apnea. Each specified reason is reportable with a cpt category ii code designated for that purpose. There may be a choking or snorting sound as breathing resumes. Measurement of quality to improve care in sleep medicine. Measures 1 4 in the obstructive sleep apnea measurement set are process measures. It is generally expressed as the number of events per hour. Morgenthaler ti aronsky aj carden ka chervin rd thomas sm watson ...