NAPLEX (North American Pharmacist Licensure Examination) Practice Exam 2026 - Free NAPLEX Practice Questions and Study Guide

Question: 1 / 1820

Enoxaparin (Lovenox) inactivates which factors for VTE prophylaxis?

Factor VIIa and IXa

Factor Ia and Va

Factor Xa and IIa

Enoxaparin (Lovenox) is a low molecular weight heparin that primarily inactivates Factor Xa and to a lesser extent, Factor IIa (thrombin). This mechanism of action makes Choice C the correct answer.

Factors VIIa and IXa (Choice A) are not predominantly targeted by enoxaparin, so this choice is incorrect.

Factor Ia and Va (Choice B) are also not the primary targets of enoxaparin, therefore this choice is incorrect.

Factor VIIIa and Va (Choice D) are not affected by enoxaparin in the context of VTE prophylaxis, making this choice incorrect as well.

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Factor VIIIa and Va

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