CCRN PRACTICE QUESTIONS

A 62-year-old man is admitted with chest pain. His electrocardiogram reveals ST segment elevation and T wave inversion in leads V1 to V4. Aspirin has been given, and morphine titration and nitroglycerin infusion are used to relieve his chest pain. The patient suddenly develops a loud holosystolic murmur at the lower left sternal border, chest pain, and hypotension 5 days after his myocardial infarction. A pulmonary artery catheter is inserted. Which of the following parameters would be noted in this patient? A. Increase in venous oxygen saturation (SvO2) B. Decrease in pulmonary artery occlusive pressure (PAOP) C. Decrease in cardiac output D. Increase in systolic blood pressure (BP) - Answer . A patient arrived in the emergency department with complaints of chest pain. The 12- lead electrocardiogram shows ST segment elevation in leads V3 and V4. Occlusion of the affected coronary artery most likely would affect perfusion to which portion of the conduction system? A. Sinoatrial (SA) node B. Bachmann's bundle C. Atrioventricular (AV) node D. Bundle of His - Answer Which of the following would not be expected in a postoperative cardiac surgery patient with a cardiac tamponade? A. Muffled heart sounds B. Increase in drainage from the mediastinal tube