Physiology Nbme Questions |127 Questions| With Correct Answers.

H {Ans: A 63-year-old man with a 5-year history of congestive heart failure comes to the emergency department because of a 1-month history of fatigue and labored breathing. Evaluation shows pulmonary edema. Furosemide is administered. Which of the following sets of physiologic changes is most likely following administration of the drug?}(E) Increased pulmonary vascular resistance {Ans: A 28-year-old woman comes to the physician because of a3-month history of shortness of breath with exertion. Shetakes an oral contraceptive. There are no occupationalexposures to birds or grain dusts. Her respirations are20/min. The lungs are clear to auscultation. Cardiacexamination shows a regular rate and rhythm; S2 is slightlylouder than S1. Cardiac catheterization shows a pulmonaryartery pressure of 78/31 mm Hg (N=15-30/3-12) with anormal left ventricular end-diastolic pressure. Which of thefollowing is most likely changed in this patient? • (A) Decreased alveolar ventilation • (B) Decreased left ventricular afterload • (C) Increased muscle tone • (D) Increased pulmonary compliance • (E) Increased pulmonary vascular resistance}A {Ans: Renal + AB A 38-year-old man who lives at sea level flies to a mountain resort in Colorado for a skiing vacation. He takes a carbonic anhydrase inhibitor tablet after arriving at the resort to