Barron's CCRN EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025)
What is the primary hemodynamic effect of:
Dopamine >10 mcg/kg/min (A) Increase preload (B) Decrease preload (C) Increase afterload (D) Decreased afterload (E) Increase contractility (D) Decrease contractility - Correct Answers ✅"high dose" dopamine causes vasoconstriction and
(C) Increase afterload What causes the S3 sound? - Correct Answers ✅Pulmonary HTN and cor pulmonale; Mitral, aortic, or tricuspid insufficiency 1 / 4
Barron's CCRN EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) When are coronary arteries perfused? - Correct Answers ✅during diastole What may you hear before crackles when a patient is going into heart failure? - Correct Answers ✅S3 heart sound What is this called?Unstable angina with transient ST segment elevation Can occur at rest or may be cyclic (occurring at the same time daily) troponin negative Can be precipitated by nicotine, coke, or ETOH - Correct Answers ✅Variant or Prinzmetal's Angina There are changes in leads II, III, aVF....what type of MI? - Correct Answers ✅RCA, inferior LV There are changes in leads V1, V3 V3, V4 - Correct Answers ✅LAD, anterior LV 2 / 4
Barron's CCRN EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) There are changes in leads V5, V6, I, aVL - Correct Answers ✅circumflex, lateral LV There are changes in leads V5, V6 - Correct Answers ✅Low lateral LB There are changes in leads I aVL - Correct Answers ✅high lateral LB There are changes in leads V1 and V2 - Correct Answers ✅RCA, posterior LV There are changes in leads V3R, V4R - Correct Answers ✅RCA, right ventricular infarct What are some signs of reperfusion following fibrinolytic treatment of a STEMI? - Correct Answers ✅Marked
ELEVATION of troponin/CK-MB: due to miocardial stunning
when vessel opens
reperfusion arrhythmias: VT, Vfib, accelerated idioventricular
rhythm (due to stunning) resolution of ST segment deviations 3 / 4
Barron's CCRN EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) Chest pain relief Your patient just had a percutaneous coronary intervention
(PCI) (stenting) less than 24 hours ago:
He is experiencing unrelenting chest pain, his EKG shows ST elevation. What should you do? What could be happening? - Correct Answers ✅contact the physician. Could be coronary artery re-occlusion/stent thrombosis.Your patient just had a percutaneous coronary intervention
(PCI) (stenting) less than 24 hours ago:
He is experiencing sudden low severe back pain and becomes hypotensive. What is happening? - Correct Answers ✅retroperitoneal bleeding is most likely. Give fluids/blood what is a normal ankle-brachial index (ABI)? - Correct Answers ✅>1 (get by dividing ankle pressure by brachial pressure on the same side) Your patient has PAD and just had a bypass graft. How should you care for the extremity? How should the HOB be? - Correct Answers ✅do not elevate the affected extremity, it will decrease perfusion
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