Recent oral direct thrombin inhibitor which can be used for prevention of stroke is
**Core Concept**
The question is testing the knowledge of a recent oral direct thrombin inhibitor (DTI) used for stroke prevention. Direct thrombin inhibitors are a class of anticoagulant medications that directly inhibit the activity of thrombin, a key enzyme in the coagulation cascade.
**Why the Correct Answer is Right**
Dabigatran, the correct answer, is a novel oral direct thrombin inhibitor that has been shown to be effective in preventing stroke in patients with non-valvular atrial fibrillation. Dabigatran works by directly inhibiting thrombin, which prevents the formation of fibrin clots. This mechanism of action is distinct from other anticoagulants that inhibit earlier steps in the coagulation cascade, such as warfarin or rivaroxaban. Dabigatran's efficacy in stroke prevention has been demonstrated in several clinical trials, including the RE-LY study.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because dabigatran is the correct answer, and there is no information provided about this option.
**Option B:** This option is incorrect because the details of this option are not relevant to the question about a recent oral direct thrombin inhibitor.
**Option C:** This option is incorrect because the details of this option are not relevant to the question about a recent oral direct thrombin inhibitor.
**Clinical Pearl / High-Yield Fact**
Dabigatran has a predictable pharmacokinetic profile, which allows for once-daily dosing without the need for routine monitoring of coagulation parameters. This makes it a convenient option for patients who require long-term anticoagulation.
**Correct Answer:** D. Dabigatran