amnion. the innermost fetal membrane, which forms a sac filled with amniotic fluid that surrounds the embryo and later the fetus; as it enlarges it gradually obliterates the chorionic cavity and enfolds the umbilical cord. Called also bag of waters.
cluster breathing. cluster breathing. a breathing pattern in which a closely grouped series of respirations is followed by apnea. The activity is associated with a lesion in the lower pontine region of the brainstem. See also Biot's respiration, Cheyne-Stokes respiration.
Chapter 4. Page 1 of 1. DEFINITION- Titration with Adaptive Servo Ventilation (ASV) is performed in. patients with complex sleep apnea. This includes patients with emergent central apneas or. Cheyne Stokes Breathing (CSB) on CPAP therapy. PURPOSE- This titration protocol is designed a.) CONFIRM the diagnosis in patients.