side branch compromise
Reduction in blood flow to a coronary side branch following main vessel intervention, often due to plaque shift or stent coverage.
Full Definition
A procedural complication that occurs when intervention on a main coronary vessel results in impaired perfusion of a branching vessel. Side branch compromise can result from several mechanisms including plaque shift from the main vessel into the branch ostium, stent struts covering the branch opening, or dissection extending into the side branch. The clinical significance depends on the size of the affected territory and the degree of flow reduction. Management strategies include balloon angioplasty of the side branch, provisional stenting, or complex bifurcation techniques.
Usage
Usage note: Hyphenate compound modifier; distinguish from intentional side branch closure.
In Context
- "Side branch compromise occurred in 8% of patients undergoing main vessel stenting at bifurcation lesions." — Procedural outcomes report
- "The operator used a provisional approach to minimize risk of side branch compromise." — Procedural note