Myocardial ischemia occurs when the heart muscle:
A) is deprived of oxygen because of a blocked coronary artery.
B) undergoes necrosis because of prolonged oxygen deprivation.
C) suffers oxygen deprivation secondary to coronary vasodilation.
D) experiences a decreased oxygen demand and an increased supply.
Answer: A) is deprived of oxygen because of a blocked coronary artery.
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