Which of the following are factors that influence the partial pressure of alveolar carbon dioxide (PACO2)? 1. Diffusion 2. Ventilation 3. CO2 production 4. Perfusion of the lungs
a. 1 and 2 c. 1, 3, and 4
b. 2 and 3 d. 1, 2, 3, and 4
ANS: D
Four major factors influence the PACO2—CO2 production, perfusion of the lungs, diffusion, and ventilation. The balance of these four components represents the total transport and elimination of CO2.
You might also like to view...
The wife of a 43-year-old male has called 911 because her husband was difficult to wake up and now is lethargic with garbled speech. She reports a history of diabetes, stroke, renal failure, and high blood pressure. His airway is patent, respirations tachypneic but adequate, and radial pulse rapid. Your partner reports the following vital signs: pulse 136, respirations 22, blood pressure 106/62,
SpO2 at 92%, and blood glucose 642. Which one of the following would be most appropriate in the care of this patient? A) Administer supplemental oxygen. B) Administer oral glucose. C) Encourage the patient to drink water. D) Assist the patient with his insulin.
You have just placed a chronic obstructive pulmonary disease (COPD) patient on intermittent mandatory ventilation at a rate of 8/min, a VT of 550 ml, and an FiO2 of 0.40
To ensure proper equilibration between the alveolar and arterial gas tensions, how long should you wait before drawing a sample for measurement of the ABG? a. 5 min b. 10 min c. 15 min d. 30 min
Decubitus ulcers:
a. Are the result of an allergic reaction b. Appear in the healing stage of a burn c. Are caused by lack of blood supply to an area subjected to sustained pressure d. Are caused by staphylococci and streptococci bacteria
A ____ is a specific time period over which the total inventory is sold.
A. sales period B. credit period C. turnover rate D. stocking rate