For carbon dioxide levels to remain constant during exercise, which of the following factors must be elevated?
a. Alveolar ventilation
b. Dead space ventilation
c. Hemoglobin
d. Bicarbonate
ANS: A
The partial pressure of carbon dioxide in the alveoli and blood is directly proportional to its pro-duction (CO2) and inversely proportional to its rate of removal by alveolar ventilation (VA).
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Fill in the blank(s) with the appropriate word(s).
Vital signs should be reassessed every ________ minutes for a stable patient
A) 10 B) 15 C) 5 D) 20
Severe external bleeding should be controlled during which phase of the patient assessment?
A) Primary assessment B) Scene size-up C) Secondary assessment D) Reassessment
The semilunar valves close when which of the following occurs?
a. The pressures in the arteries exceed those in the ventricles. b. The pressures in the ventricles and arteries become equal. c. The pressures in the atria exceed those in the ventricles. d. The pressures in the ventricles exceed those in the atria.