Which of the following are variables controlled during pressure assist/control mechanical ventila-tion? 1. Volume 2. Flow 3. Time 4. Pressure
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 1, 2, 3, and 4
ANS: C
Health Professions
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Which of the following is the mechanism of action of beta blockers in the heart muscle?
A) They increase oxygen demand. B) They decrease oxygen demand. C) They decrease blood calcium. D) They increase blood pressure.
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