NCLEX-RN (Registered Nurse) Practice Exam · Question
What is the primary reason for administering epinephrine in a cardiac arrest scenario?
Epinephrine's alpha-adrenergic effects cause vasoconstriction, shunting blood to the core organs (heart and brain), improving coronary perfusion pressure.
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Question: What is the primary reason for administering epinephrine in a cardiac arrest scenario?
Answer options:
- To increase myocardial contractility.
- To treat bradycardia.
- To improve cerebral blood flow. ✅ To cause peripheral vasoconstriction and improve coronary perfusion.
Correct answer: To cause peripheral vasoconstriction and improve coronary perfusion.
Explanation: Epinephrine's alpha-adrenergic effects cause vasoconstriction, shunting blood to the core organs (heart and brain), improving coronary perfusion pressure.
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