Under normal physiologic circumstances, how many milliliters of O2 are capable of combining with 1 g of Hb?
a. 0.003 ml
b. 0.450 ml
c. 0.820 ml
d. 1.340 ml
ANS: D
In whole blood, each gram of hemoglobin can carry approximately 1.34 ml of O2.
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A patient who is hypoxic has a pulmonary disease that involves low lung compliance. As such, you realize:
A) the lung is easily over-inflated which can cause tissue damage. B) oxygen and carbon dioxide cannot easily be exchanged in the alveoli. C) the patient has tremendous swelling to the smaller airways. D) ventilation with a bag-valve-mask will require more effort.
Which of the following is/are true regarding the PACO2?
1. Directly proportional to whole-body carbon dioxide production 2. Directly proportional to alveolar ventilation (VA) 3. Normally maintained at approximately 35 to 45 mm Hg a. 2 and 3 only b. 3 only c. 1 and 2 only d. 1 and 3 only