When is a polysomnography with CPAP titration appropriate?
• Polysomnography with CPAP titration may be appropriate for patients with any of the following: • An apnea index (AI) of at least 20 per hour or an apnea-hyponea (AHI) of greater than or equal to 15 events per hours, regardless of the patient’s symmtoms; • AHI of greater than or equal to 5 events per hour and less than or equal to 14 events per hour with documented symptoms of excessive daytime sleepiness, impaired cognition, mood disorders or insomnia, or documented hypertension, ischemic heart disease, or history of stroke; NOTE: The AHI is equal to the average number of episodes of apnea and hypopne per hour and must be based on a minimum of 2 hours of sleep by PSG using actual recorded hours of sleep (i.e., the AHI may not be extrapolated or projected); • A respiratory arousal index of at least 10 per hour in a patient with excessive daytime sleepiness • A clinical change, such as a significant change in body weight or the development of CHF or LV dysfunction, indicating that the
