What electrolyte inactivates troponin and allows actin and myosin to form a bridge enabling fibers to contract?

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.

Choice A rationale

While maintaining patient confidentiality is crucial, it does not address the immediate medical needs of the patient with chronic renal failure. The primary concern should be addressing the health implications of their condition and ensuring proper care coordination.

Choice B rationale

Administering medications ordered immediately is essential, but it is not the first priority without knowing the patient's current status and medical history. The nurse needs to ensure that the medications prescribed are appropriate for a patient with chronic renal failure.

Choice C rationale

Providing teaching about chronic renal failure is important for long-term management but is not the first priority upon admission. Immediate medical needs and communication with the care team take precedence in this acute care setting.

Choice D rationale

Calling the admitting physician immediately is the first priority. The primary care provider needs to be aware of the patient's diagnosis of chronic renal failure to adjust treatment plans accordingly. Immediate communication ensures that all healthcare professionals are on the same page regarding the patient's care. .