56-year-old woman is brought to the emergency department because of substernal chest pain and profuse perspiration. An ECG shows ST-segment elevation in leads II, Ill, and aVF. Echocardiography shows a severe decrease in motility of the inferior surfaces of the left and right ventricles. Cardiorespiratory arrest occurs, and resuscitation is unsuccessful. At autopsy, a thrombus is most likely to be found in which of the following arterial branches? A)Marginal branch of the left anterior interventricular artery B)Marginal branch of the right coronary artery C) Posterior interventricular branch of the right coronary artery
A 56-year-old woman is brought to the emergency department because of substernal chest pain and profuse perspiration. An ECG shows ST-segment elevation in leads II, Ill, and aVF. Echocardiography shows a severe decrease in motility of the inferior surfaces of the left and right ventricles. Cardiorespiratory arrest occurs, and resuscitation is unsuccessful. At autopsy, a thrombus is most likely to be found in which of the following arterial branches?
A)Marginal branch of the left anterior interventricular artery B)Marginal branch of the right coronary artery C) Posterior interventricular branch of the right coronary artery D) Posterior left ventricular branch of the circumflex artery E) Sinoatrial branch of the right coronary artery
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