Identify the first-line prophylactic treatment for DVT and pulmonary embolism in at-risk general surgery patients.

Identify the first-line prophylactic treatment for DVT and pulmonary embolism in at-risk general surgery patients.

• A. Enoxaparin
• B. Aspirin
• C. Heparin
• D. Fondaparinux

Answer: (C)

The main idea is that preventing venous clots in patients after general surgery relies on a fast-acting anticoagulant that can be easily adjusted or reversed if bleeding occurs. Unfractionated heparin fits this need well: it’s given in prophylactic doses, begins working quickly, and its effects can be rapidly reversed with protamine if postoperative bleeding happens. This reversibility and rapid onset are particularly valuable right after surgery when bleeding risk is a concern, making it a strong first-line choice for DVT and PE prophylaxis in at-risk patients. Aspirin isn’t sufficient for venous thrombosis prevention in this setting, so it isn’t the best choice here. Fondaparinux is effective but has a longer, less easily reversible half-life and is generally used in specific situations rather than as the universal first-line option. Enoxaparin, a low-molecular-weight heparin, is also widely used and effective, but the ability to rapidly reverse unfractionated heparin gives it an edge in the immediate perioperative period.

The main idea is that preventing venous clots in patients after general surgery relies on a fast-acting anticoagulant that can be easily adjusted or reversed if bleeding occurs. Unfractionated heparin fits this need well: it’s given in prophylactic doses, begins working quickly, and its effects can be rapidly reversed with protamine if postoperative bleeding happens. This reversibility and rapid onset are particularly valuable right after surgery when bleeding risk is a concern, making it a strong first-line choice for DVT and PE prophylaxis in at-risk patients.

Aspirin isn’t sufficient for venous thrombosis prevention in this setting, so it isn’t the best choice here. Fondaparinux is effective but has a longer, less easily reversible half-life and is generally used in specific situations rather than as the universal first-line option. Enoxaparin, a low-molecular-weight heparin, is also widely used and effective, but the ability to rapidly reverse unfractionated heparin gives it an edge in the immediate perioperative period.