A nurse is working on telemetry unit when an alarm sounds on the cardiac monitor The rhythm below is noted. What should the nurse do?
Call the physician
Administer oxygen
Initiate cardiopulmonary resuscitation (CPR)
Give a dose of epinephrine
The Correct Answer is C
A. Call the physician: While notifying the physician is important, it is not the immediate priority in a life-threatening situation like ventricular fibrillation.
B. Administer oxygen: Administering oxygen is helpful, but the immediate priority in ventricular fibrillation is to initiate life-saving measures.
C. Initiate cardiopulmonary resuscitation (CPR): Ventricular fibrillation is a life-threatening emergency, and initiating CPR immediately is crucial to restore circulation and improve chances of survival.
D. Give a dose of epinephrine: Epinephrine is part of the advanced cardiac life support (ACLS) protocol, but it should be administered after initiating CPR and defibrillation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Troponin: Troponin is the most specific and reliable biomarker for myocardial injury. Levels rise within 3-6 hours and remain elevated for days, providing diagnostic and prognostic information.
B. Alkaline phosphatase: This is related to liver and bone disorders, not cardiac events.
C. Creatine kinase (CK): While CK-MB is specific to cardiac tissue, it is less specific and remains elevated for a shorter period compared to troponin.
D. Myoglobin: Myoglobin is an early but nonspecific marker of muscle damage and is not as reliable for diagnosing myocardial injury.
Correct Answer is B
Explanation
A. Suppresses ectopic ventricular sites: Atropine primarily increases heart rate; it does not directly suppress ectopic ventricular activity.
B. Increases SA node automaticity: Atropine blocks the parasympathetic nervous system, increasing SA node activity and heart rate in cases of bradycardia or asystole.
C. Increases myocardial contractility: This effect is more related to drugs like inotropes (e.g., dopamine), not atropine.
D. Decreases AV node conduction: Atropine actually increases conduction through the AV node by blocking vagal stimulation.
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