What is the critical factor that determines carbon dioxide movement in and out of the blood?
A) PO2
B) PCO2
C) PaO2
D) PaCO2
Ans: B
Feedback: Most of the carbon dioxide (90%) is carried by red blood cells; the small portion (5%) that remains dissolved in the plasma (PCO2) is the critical factor that determines carbon dioxide movement into or out of the blood. The PO2 and PaO2 have to do with oxygen in the blood, not carbon dioxide. PaCO2 is an arterial measurement, not a venous measurement.
You might also like to view...
A nurse is teaching a group of patients about the prevalence of type 2 diabetes in older adults. The nurse knows teaching has been effective when a patient states, "Statistically, in a group of 100 older adults in the United States, approximately:
1. 10 will have type 2 diabetes." 2. 17 will have type 2 diabetes." 3. 27 will have type 2 diabetes." 4. 33 will have type 2 diabetes."
Evidence-based public health (EBPH) is:
a. an integration of the best available nursing expertise. b. derived from community principles to fit the area where it is practiced. c. a health endeavor that makes informed use of evidence. d. comprised of only public health records.
One of the cardinal signs of anorexia nervosa in the young woman is:
a. Freckled skin b. Amenorrhea c. Sparse hair d. Arthritic joints
When assessing cranial nerves IX and X, which of the following would the nurse consider as a normal finding?
A) Stationary soft palate on phonation B) Deviation of uvula when client says "ah" C) Asymmetrical soft palate D) Uvula and soft palate rising bilaterally