The nurse is preparing to administer enoxaparin (Lovenox) to a client before hip replacement surgery. Which of the following conditions would prevent the nurse from administering this drug?

The correct answer is B: Bleeding disorder. Enoxaparin is an anticoagulant that can increase the risk of bleeding. Administering it to a client with a bleeding disorder could exacerbate their condition and lead to severe bleeding complications. Deep Vein Thrombosis (A), Pulmonary Embolism (D), and a Heart Rate of 60 (C) are not contraindications for administering enoxaparin before hip replacement surgery. Deep Vein Thrombosis and Pulmonary Embolism are actually conditions for which enoxaparin is commonly used as a preventative measure. A heart rate of 60 is within normal range and would not prevent the administration of enoxaparin.