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Which vitamin is essential for a patient on Coumadin to prevent serious injury?

A.

Vitamin D

B.

Vitamin K

C.

Vitamin C

D.

Vitamin B12

Answer and Explanation

The Correct Answer is B

A. Vitamin D is important for bone health but does not directly affect Coumadin (warfarin) therapy.
B. Vitamin K plays a critical role in blood clotting. Coumadin works by inhibiting vitamin K–dependent clotting factors, so maintaining a consistent intake of vitamin K is essential to prevent fluctuations in anticoagulation and reduce the risk of bleeding or clotting complications.
C. Vitamin C is important for immune function and tissue repair but does not directly interact with Coumadin.
D. Vitamin B12 is necessary for red blood cell production and nervous system function but is not directly related to Coumadin therapy or prevention of bleeding complications.


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Related Questions

Correct Answer is B

Explanation

A. Use salt substitutes while taking this medication: Salt substitutes often contain potassium, and captopril (an ACE inhibitor) can increase serum potassium levels, which raises the risk of hyperkalemia.

B. Captopril should be taken 1 hour before or 2 hours after meals to ensure proper absorption and maintain optimal blood pressure control.

C. Weight gain is not a typical side effect of captopril; instead, clients should monitor for signs of fluid retention or edema, which could indicate heart failure.

D. Expect a dry cough when taking this medication: While a dry cough is a common side effect of captopril, clients should report it to their provider, as it may require switching to another antihypertensive (such as an ARB). It should not be presented as something to simply “expect and accept.”

Correct Answer is D

Explanation

A. Peptic ulcer is a relative caution but not an absolute contraindication; risk of bleeding should be considered.
B. Hypertension is a relative caution; severe uncontrolled hypertension increases bleeding risk, but controlled hypertension is not an absolute contraindication.
C. Ischemic stroke within the past 3 months is a relative contraindication; caution is needed due to increased risk of hemorrhagic conversion.
D. Active internal bleeding is an absolute contraindication for alteplase because it is a thrombolytic agent. Administering it in the presence of active bleeding can lead to life-threatening hemorrhage.

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