During exertion, a 53-year-old man's chest pressure decreases only slightly with rest. Which diagnosis is most likely?

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Multiple Choice

During exertion, a 53-year-old man's chest pressure decreases only slightly with rest. Which diagnosis is most likely?

The main idea here is how a patient’s chest pain responds to rest helps distinguish stable angina from an acute coronary syndrome. When chest pressure from exertion eases completely with rest, that suggests stable angina due to a fixed coronary narrowing. If the pressure decreases only slightly with rest, ongoing ischemia is likely, which raises concern for an evolving myocardial infarction or unstable angina. In myocardial infarction, the ischemia is not fully relieved by rest, and the pain tends to be more persistent and severe, often lasting longer than a few minutes and may be accompanied by sweating or shortness of breath. That pattern—exertional pain that is only partially relieved by rest—fits with ongoing myocardial injury, making myocardial infarction the best choice. Pulmonary embolism and aortic dissection typically present with different, more abrupt, and distinctive symptom patterns (sudden sharp or tearing chest pain, dyspnea, or chest pain with different quality than classic angina), and angina itself is usually relieved by rest or nitroglycerin.

The main idea here is how a patient’s chest pain responds to rest helps distinguish stable angina from an acute coronary syndrome. When chest pressure from exertion eases completely with rest, that suggests stable angina due to a fixed coronary narrowing. If the pressure decreases only slightly with rest, ongoing ischemia is likely, which raises concern for an evolving myocardial infarction or unstable angina. In myocardial infarction, the ischemia is not fully relieved by rest, and the pain tends to be more persistent and severe, often lasting longer than a few minutes and may be accompanied by sweating or shortness of breath. That pattern—exertional pain that is only partially relieved by rest—fits with ongoing myocardial injury, making myocardial infarction the best choice. Pulmonary embolism and aortic dissection typically present with different, more abrupt, and distinctive symptom patterns (sudden sharp or tearing chest pain, dyspnea, or chest pain with different quality than classic angina), and angina itself is usually relieved by rest or nitroglycerin.

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