The nurse discovers a patient receiving warfarin is bleeding.
What drug would the nurse prepare to counteract this drug?
Vitamin E.
Protamine Sulfate.
Calcium Gluconate.
Vitamin K.
The Correct Answer is D
Choice A rationale
Vitamin E is an antioxidant and is not indicated to counteract the effects of warfarin. It does not have a role in reversing anticoagulation or managing bleeding. High doses of Vitamin E can actually interfere with clotting and potentially exacerbate bleeding.
Choice B rationale
Protamine Sulfate is an antidote for heparin, not warfarin. It works by neutralizing the effects of heparin, which is an anticoagulant that acts quickly to prevent clot formation. Warfarin works differently and requires a different antidote for its anticoagulant effect.
Choice C rationale
Calcium Gluconate is not an antidote for warfarin. It is typically used in cases of hypocalcemia and can stabilize cardiac membranes in hyperkalemia but has no effect on reversing warfarin-induced anticoagulation or bleeding.
Choice D rationale
Vitamin K is the correct antidote for warfarin. It counteracts the anticoagulant effects by promoting the synthesis of clotting factors that warfarin inhibits. Administering Vitamin K is standard practice in reversing the effects of warfarin and managing bleeding complications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Monitoring the weekly pulse is not sufficient for managing ventricular arrhythmias at home. Continuous or daily monitoring of vital parameters is more effective.
Choice B rationale
Monitoring daily fluid intake is essential for overall health but not directly related to the management of ventricular arrhythmias with propranolol (Inderal).
Choice C rationale
Daily blood pressure monitoring is crucial for patients on propranolol, as this medication can significantly lower blood pressure, and tracking it helps prevent hypotension.
Choice D rationale
Weekly weight monitoring is important for patients with heart conditions, but daily monitoring of blood pressure is more directly related to the management of ventricular arrhythmias with propranolol.
Correct Answer is D
Explanation
Choice A rationale
Magnesium plays a role in various cellular functions, including enzyme activity and muscle contraction, but it does not directly inactivate troponin to enable actin and myosin interaction.
Choice B rationale
Sodium is essential for action potential generation and nerve impulse transmission but does not directly influence troponin activity or muscle contraction through actin and myosin bridge formation.
Choice C rationale
Potassium is critical for maintaining cellular resting membrane potential and repolarization of cells but does not play a direct role in inactivating troponin to facilitate muscle contraction.
Choice D rationale
Calcium is the electrolyte that inactivates troponin, allowing actin and myosin to form cross-bridges and contract muscle fibers. Calcium binds to troponin, causing a conformational change that exposes binding sites for myosin on actin filaments.
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