What does the term "angioplasty" refer to?

• A. A surgical procedure to remove clots
• B. A procedure to widen narrowed or obstructed blood vessels
• C. A technique for imaging blood vessels
• D. A method for grafting new arteries

Answer: (B)

Angioplasty refers specifically to a medical procedure that aims to widen narrowed or obstructed blood vessels, typically arteries. This is accomplished by using a catheter with a balloon at its tip, which is inserted into the affected blood vessel. Once in position, the balloon is inflated, which compresses the plaque or obstruction against the artery wall, thereby enlarging the vessel's diameter and restoring adequate blood flow.

This procedure is commonly used in cases of coronary artery disease, where the arteries supplying blood to the heart become narrowed due to a buildup of fatty deposits. By performing angioplasty, physicians can improve blood flow and reduce the risk of heart-related complications.

Understanding this context highlights the procedure's purpose and relevance in the field of interventional radiology and vascular medicine. The other choices, while related to vascular health, describe different procedures. For instance, removing clots refers to thrombectomy, imaging blood vessels pertains to angiography, and grafting new arteries relates to bypass surgery. Each of these interventions serves distinct functions in vascular treatments, further emphasizing that angioplasty specifically focuses on the dilation of narrowed arteries.