What primary factor is responsible for the normal change in oxygen diffusion capacity during maximum exercise?
a. Hyperventilation results in increased increased PaO2s
b. The increased cardiac output results in increased ventilation/perfusion mismatch
c. Hyperventilation results in lowered H+ levels which shifts the oxygen dissociation curve
d. The increased cardiac output results in recuitment of pulmonary capillaries
d. The increased cardiac output results in recuitment of pulmonary capillaries
You might also like to view...
A patient who just suffered severe closed-head injury and has a high intracranial pressure (ICP) is about to be placed on ventilatory support. Which of the following strategies could help to lower the ICP?
a. Maintain a PaCO2 from 25 to 30 mm Hg (deliberate hyperventilation). b. Allow as much spontaneous breathing as possible (SIMV). c. Maintain a high mean pressure using PEEP levels of 10 to 15 cm H2O. d. Maintain a PaCO2 of 50 to 60 mm Hg (de-liberate hypoventilation).
Which is a licensed physician in good standing who, according to state regulations, engages in the direct management of nonphysician practitioners whose duties are encompassed by that physician's scope of practice?
a. attending physician b. managing physician c. primary care physician d. supervising physician