QuestionSBA
QuestionChoice
Amiodarone is an antiarrhythmic medication used to control atrial fibrillation rhythm, but it is not an anticoagulant. Stroke prevention in atrial fibrillation usually requires anticoagulation therapy to reduce the risk of thrombus formation.
10024104
e
Amiodarone
QuestionChoice
Diltiazem is a calcium channel blocker often used for rate control in atrial fibrillation, but it is not primarily used for stroke prevention. Stroke prevention in atrial fibrillation is achieved through anticoagulant therapy.
10024102
c
Diltiazem
QuestionChoice
Metoprolol is a beta-blocker commonly used for rate control in atrial fibrillation but does not directly address stroke prevention. Stroke prevention is a separate aspect of atrial fibrillation management that typically involves anticoagulant therapy.
10024103
d
Metoprolol
QuestionChoice
Aspirin is an antiplatelet medication and, whilst it can reduce the risk of stroke to some extent, it is generally considered less effective than anticoagulants like warfarin or direct oral anticoagulants for stroke prevention in atrial fibrillation. Anticoagulants target the formation of blood clots (thrombi) in the atria, which is a significant concern in atrial fibrillation.
10024101
b
Aspirin
QuestionChoice
Atrial fibrillation is a significant risk factor for stroke due to the potential for blood stasis and the formation of atrial thrombi. Anticoagulation therapy is crucial for stroke prevention in patients with atrial fibrillation. Warfarin is a well-established oral anticoagulant that reduces the risk of stroke by inhibiting the formation of blood clots. Other options do not provide the same level of stroke prevention in atrial fibrillation. Aspirin may be considered in some low-risk patients, but warfarin or newer oral anticoagulants (e.g. direct oral anticoagulants like rivaroxaban) are more effective choices for patients at moderate to high risk of stroke.
10024100
a
Warfarin
Concept
Chapter
2693
5735
Management & Risks
Topic
291
Atrial Fibrillation
17218
A 65-year-old patient with atrial fibrillation is at risk of having a stroke.

Which of the following medications is the most appropriate choice for stroke prevention in this patient?
a