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
Checking vitamin K levels doesn't directly monitor warfarin's effect.
Choice B rationale
PTT and aPTT assess heparin, not warfarin.
Choice C rationale
INR specifically measures warfarin's effectiveness and safety.
Choice D rationale
Platelet levels don't monitor the anticoagulant effect of warfarin.
Correct Answer is C
Explanation
Choice A rationale
Magnesium plays a role in muscle relaxation but is not primarily responsible for muscle contraction. It helps in stabilizing the muscle membrane by acting as a natural calcium blocker. Deficiency in magnesium can lead to muscle cramps and spasms, but it does not directly cause muscle contraction and relaxation processes.
Choice B rationale
Chloride is an essential electrolyte involved in maintaining fluid balance and acid-base balance, but it does not directly influence muscle contraction and relaxation. It works in conjunction with sodium to regulate osmotic pressure and acid-base balance.
Choice C rationale
Calcium is crucial for muscle contraction. It is released from the sarcoplasmic reticulum within the muscle cells and binds to troponin, causing a conformational change that allows actin and myosin to interact and generate contraction. During relaxation, calcium ions are pumped back into the sarcoplasmic reticulum.
Choice D rationale
Hydrogen ions are involved in pH balance and acid-base regulation but do not directly affect muscle contraction and relaxation. Excess hydrogen ions (acidosis) can impair muscle function, but they are not the primary factor in muscle contraction processes.
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