DISCRIMINATION OF APNEA TYPE BY MEDICAL DEVICE

摘要

Disclosed herein, among other things, are methods and apparatus related to identification of apnea type. One aspect of the present subject matter provides a method for real-time apnea discrimination. The method includes sensing an impedance-based tidal volume signal to monitor a respiratory cycle of a patient, and detecting a reduction in tidal swing using the sensed impendence to detect an apnea event. When the apnea event is detected, a shape of the sensed signal is compared to a stored signal shape to determine whether the apnea event is primarily an obstructive sleep apnea (OSA) event or primarily a central sleep apnea (CSA) event, in various embodiments.

主权项

1. A method for apnea discrimination, the method comprising:
sensing an impedance-based tidal volume signal to monitor a respiratory cycle of a patient; detecting a reduction in tidal swing using the sensed impendence to detect an apnea event; and when the apnea event is detected, comparing a shape of the sensed signal to a stored signal shape to determine whether the apnea event is primarily an obstructive sleep apnea (OSA) event or primarily a central sleep apnea (CSA) event.