Coronary circulation (5) 19/12/23
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1) A 45-year-old man presents with substernal chest pain that radiates to the left arm, diaphoresis, and lightheadedness for the past 30 minutes. Evaluation determines that the patient has severe stenosis of the proximal left main coronary artery with decreased perfusion to the posterior interventricular septum. However, there is no infarction of the posterior interventricular septum. What is the type of cardiac circulation in this patient?
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2) A 52-year-old male smoker presented with substernal chest pain lasting for forty minutes. Investigations confirmed acute ST-elevation MI of the inferior wall of the left ventricle associated with right ventricular MI. Which artery is involved?
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3) A 60-year-old man presents with chest pain of 6 hours duration and is diagnosed as having acute myocardial infarction. Angiography showed occlusion of anterior descending branch of the left coronary artery. Which is the most probable site of infarct?
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4) A patient has suffered an isolated lateral wall MI. Which artery is involved?
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5) Most common artery involved in myocardial infarction
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