MSF Exam 3 Practice TEST 2023 QUESTIONS AND CORRECT ANSWERS

MSF Exam 3 Practice TEST 2023 QUESTIONS AND CORRECT ANSWERS IC = VT + IRV Vd = VT ((paCO2 - PeCO2) / paCO2)) 3548 = VT + 3040 = 508 Vd = 508 ((40-30)/40) Vd = 127 Part 2: VA = (VT - Vd) x f VA = (508 - 127)15 VA = 5715 Part 3: VE = VT x f VE = 508 x 15 VE = 7620 Given a respiration rate of 15 breaths/min, an IRV of 3040 mL, an IC of 3548, a partial pressure of CO2 in inspired air of 30 mmHg, and a partial pressure of CO2 in arterial blood of 40 mmHg - calculate physiologic dead space? What is the alveolar ventilation? (room air delivered to the respiratory zone per breath) What is minute ventilation? (total volume of air moved in or out of the lungs per minute) True In children with Down Syndrome, the alveoli are increased in size d/t failure of alveolar multiplication. These enlarged alveoli lead to an overall diminished lung surface area for gas exchange compared to normal lungs. T or F True T or F Most of the structures in the bronchi and bronchioles are involved in air distribution rather than gas exchange False T or F Air and blood are in direct contact in the alveoli E. Both A and B Which of the following constitutes total lung capacity? A. Residual volume and vital capacity B. Tidal volume, inspiratory volume, expiratory reserve volume, and residual volume C. Residual volume and tidal volume D. Vital capacity and tidal volume E. Both A and B C. 4.5 L IC = VC - ERV = 6 - 1.5 IC = 4.5 The following lung volumes are obtained on spirometer from a 38-y/o man with asthma: FRC = 3 L VC = 6 L ERV = 1.5 L What is his IC? A. 9 L B. 7.5 L C. 4.5 L D. 3 L E. Cannot be determined