What procedure reroutes blood flow around a blockage?

• A. Graft
• B. Thrombectomy
• C. Thrombolysis
• D. Embolization

Answer: (A)

The choice of grafting as the procedure that reroutes blood flow around a blockage is correct because grafting involves the surgical placement of a vessel (or a synthetic substitute) to create a new pathway for blood to flow, bypassing an area where there is a blockage. This technique is often employed in cases of arterial disease, such as peripheral artery disease or coronary artery disease, where the normal blood flow is impeded by narrowing or occlusion due to plaque buildup or other causes.

In contrast, thrombectomy is a procedure aimed at removing a blood clot from a blood vessel, while thrombolysis involves the use of medication to dissolve blood clots that are obstructing blood flow. Embolization is a procedure used to intentionally block a blood vessel, often to reduce blood flow to a tumor or to control bleeding, which is the opposite of rerouting blood flow. Each of these alternatives focuses on treating existing blockages or controlling bleeding rather than establishing a new route for blood flow around the blockage itself, highlighting why grafting is the correct choice.