Oscar is a 67-year-old patient who experienced a myocardial infarction. He asks the nurse why his chest hurt when he had his heart attack. What is the best response from the nurse?
A. "One of your heart valves wasn't working properly and caused an obstructed blood flow."
B. "One of your coronary arteries was blocked, and your heart muscle wasn't able to get enough blood."
C. "Your heart muscle was deprived of oxygen, which caused chest pain."
D. "The heart muscle is sensitive to changes in electrical conduction."
C
When decreased myocardial blood perfusion is extensive or perfusion is completely blocked, the tissue becomes necrotic and a myocardial infarction occurs. Angina or angina pectoris is the result of decreased blood flow to the myocardium as a result of coronary artery spasms or temporary constriction.
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