Which of the following best describes the concept of 'critical closing pressure' in hyperbaric oxygen-induced vasoconstriction?
-
A
The minimum pressure needed to maintain vessel patency against tissue edema
-
B
The chamber pressure at which gas embolism bubbles collapse
-
C
The oxygen partial pressure at which hemoglobin is 50% saturated
-
D
The arterial pressure below which cerebral autoregulation fails