Pulmonary Physiology Review Questions - Levitsky (Complete) Study Guide Questions And Correct Answers

A person with significant areas of alveolar dead space resulting from low right ventricular output a. Will have an arterial end-tidal (alveolar) CO2 difference b. Will have a physiologic dead space equal to his or her anatomic dead space c. Will have a low ventilation-perfusion ratio d. Will have a lower than normal mixed expired PO2 e. All of the above are correct {Ans: a. Will have an arterial end-tidal (alveolar) CO2 difference dead space = ventilated but not perfused}Neck-deep immersion in cold water decreases: a. The inspiratory work of breathing b. Venous return c. The functional residual capacity d. The inspiratory reserve volume e. Right atrial pressure {Ans: c. The functional residual capacity}a 69-year-old patient is diagnosed with chronic obstructive pulmonary disease that is primarily emphysema, a disease that destroys alveoli. Which of the following statements about his pulmonary function tests is correct? a. His FEV1/FVC is likely less than 80% b. His diffusing capacity is likely less than predicted c. His functional residual capacity as determined using a body plethysmograph is likely greater than his functional residual capacity determined by the helium dilution method d. His FEV1 is likely less than predicted e. All of the