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CCI Registered Cardiovascular Invasive Specialist (RCIS) Practice Exam

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Which of the following is commonly used to treat flow-limiting dissections during PCI?
Correct Answer:
stent
Explanation:
When a dissection narrows or blocks flow during PCI, the go-to treatment is placing a stent. The stent acts as a scaffold that holds the vessel open and presses the dissection flap against the wall, sealing the tear and preventing further propagation, which restores and stabilizes blood flow. Performing angioplasty alone can push the flap or leave it unsupported, increasing the risk of persistent flow limitation. Atherectomy modifies plaque but doesn’t address the dissection itself. Covered stents are reserved for cases with vessel rupture or larger, high-risk dissections; they’re not the routine choice for a standard flow-limiting dissection because of higher complication risks and other drawbacks.

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