side branch jail
Compromise of side branch flow following main vessel stenting in bifurcation lesions, potentially requiring rescue intervention.
Full Definition
Side branch jail refers to the acute compromise or occlusion of a side branch vessel following stent deployment in the main vessel of a coronary bifurcation lesion. This phenomenon occurs when stent struts cross the side branch ostium, potentially causing plaque shift, mechanical obstruction, or flow limitation. The term 'jail' aptly describes how the side branch becomes trapped or compromised behind the main vessel stent struts. Management strategies include bailout side branch intervention with kissing balloon technique, side branch stenting, or acceptance if the vessel is small with minimal myocardial territory. Prevention involves careful pre-procedural assessment and consideration of provisional versus planned two-stent strategies.
Usage
Usage note: Hyphenate side-branch when used as compound modifier; 'jail' refers to compromise, not anatomical imprisonment.
In Context
- "Main vessel stenting resulted in side branch jail requiring bailout intervention." — Procedural complication report
- "The diagonal vessel showed evidence of side branch jail after LAD stent deployment." — Angiographic assessment