What is the minimum airway pressure at which the esophagus opens, allowing gas to pass directly into the stomach?
a. 25 cm H2O
b. 20 cm H2O
c. 15 cm H2O
d. 10 cm H2O
ANS: B
Normally, the esophagus does not open until a pressure of approximately 20 cm H2O has been reached.
Health Professions
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