Apnea, hypoventilation and pulmonary hypertension Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 56-year-old man presents to his family physician for a routine checkup. Upon walking the short distance from the waiting room to the exam room, the patient becomes short of breath. He states that he frequently feels tired throughout the day and has had these symptoms for years. His previous physician performed a full cardiac workup, which was unremarkable. Temperature is 99.0°F, blood pressure is 150/110 mm Hg, pulse is 90/min, respirations are 25/min and oxygen saturation is 94% on room air. The patient has a BMI of 42 kg/m2. The patient undergoes in-laboratory polysomnography testing, which demonstrates hypoventilation during sleep. Further laboratory testing demonstrates an elevated serum bicarbonate level. Which of the following best describes the underlying pathophysiology of this patient’s clinical condition?  

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