What is the antidote for dabigatran?
Vitamin K
Activated charcoal
Idarucizumab
Andexanet alfa
The Correct Answer is C
A. Vitamin K: Vitamin K is used to reverse the effects of warfarin by promoting clotting factor synthesis. It is ineffective against dabigatran, a direct thrombin inhibitor, because dabigatran’s mechanism is independent of vitamin K–dependent clotting factors.
B. Activated charcoal: Activated charcoal can reduce the absorption of recently ingested dabigatran if given within a short timeframe after ingestion. However, it is not a specific antidote and is only useful in cases of recent overdose, not for urgent reversal in bleeding emergencies.
C. Idarucizumab: Idarucizumab is a monoclonal antibody fragment that specifically binds to dabigatran, neutralizing its anticoagulant effect. It acts rapidly and is indicated in life-threatening or uncontrolled bleeding or when urgent surgery is required, making it the definitive antidote.
D. Andexanet alfa: Andexanet alfa is an antidote for factor Xa inhibitors such as apixaban and rivaroxaban. It does not reverse dabigatran, which is a direct thrombin inhibitor, and therefore is not appropriate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Report clear-colored sputum to the provider: Clear-colored sputum is typically normal and not an indication of infection or complication. The client does not need to report it unless accompanied by other concerning symptoms.
B. Increase your oral fluid intake: Guaifenesin is an expectorant that works by thinning and loosening mucus in the airways. Increasing fluid intake helps optimize its effectiveness, making coughs more productive and facilitating mucus clearance.
C. Report symptoms that last longer than 2 days: Symptoms of a sinus infection often last longer than two days, and short-duration monitoring is insufficient. Clients are usually advised to report persistent or worsening symptoms after about 7–10 days, so this instruction is inaccurate.
D. This medication will stop your cough: Guaifenesin does not suppress cough; instead, it loosens mucus to make coughing more productive. Telling the client it will stop their cough could lead to misunderstanding of the medication’s purpose and effectiveness.
Correct Answer is {"dropdown-group-1":"A","dropdown-group-2":"B","dropdown-group-3":"C"}
Explanation
• Simvastatin: Simvastatin is a statin medication used to lower LDL cholesterol and total cholesterol in clients with hypercholesterolemia. It works by inhibiting HMG-CoA reductase, an enzyme involved in cholesterol synthesis in the liver. Statins reduce the risk of atherosclerotic cardiovascular disease and are part of long-term management of elevated lipid levels.
• In the evening: Cholesterol synthesis in the liver is highest at night. Administering simvastatin in the evening optimizes its effectiveness in lowering LDL and total cholesterol levels. Educating clients about timing improves medication efficacy and supports adherence to therapy.
• Dark urine: Dark urine may indicate rhabdomyolysis, a rare but serious adverse effect of statins, caused by muscle breakdown. Clients should report this immediately, as it can lead to acute kidney injury. Prompt recognition and discontinuation of the medication are essential to prevent severe complications.
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