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Review Question - QID 212407

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QID 212407 (Type "212407" in App Search)
A 55-year-old man presents to the emergency department with chest pain that started 1 hour ago and has not been improving. He has a past medical history of diabetes, hypertension, and obesity. His temperature is 98.5°F (36.9°C), blood pressure is 147/68 mmHg, pulse is 130/min, respirations are 13/min, and oxygen saturation is 100% on room air. Physical exam is notable for jugular venous distension and bilateral lower extremity pitting edema. The patient is given nitroglycerin, and his chest pain improves. Which of the following is the best explanation for this patient’s improvement in symptoms?