PCI complications: abrupt closure
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Editors-In-Chief: Alexandra Almonacid M.D. [1], Jeffrey J. Popma M.D. [2]
Overview
Abrupt closure during coronary intervention is defined as an abrupt cessation of coronary flow to TIMI 0 or 1.
Abrupt Closure
Incidence
It occurs during 3-5% of balloon angioplasty procedures. Its incidence has been markedly reduced with the availability of coronary stents.
Causes
Abrupt closure may be due to coronary dissection, embolization, or thrombus formation within the vessel.
Factors Associated with Abrupt Closure
- Clinical: unstable angina, female, AMI, chronic renal failure
- Angiographic: Intraluminal thrombus, ACC/AHA score, multivessel disease, long lesions, >45 degree angulation, branch points, proximal tortuosity, ostial RCA, degenerated SVGs, prestenosis >90%, intimal dissections
Prognosis
Factors Predicting Mortality after Abrupt Closure
- % myocardium at risk
- LM and multivessel disease
- CHF, UAP
- Target vessels supplies collaterals
- > age 65 years
- Chronic renal failure
- Female gender
- Diabetes
Treatment
Stent Use in Abrupt Closure
- Gianturco-Roubin stent improves lumen size and reduced MACE
- PS stent improves outcome: mortality 1.3%, MI 4%, 1% CABG
- ACS Multi-Link: mortality 1.4%, MI 2.9%
- Mostly associated with subacute stent thrombosis
- Rx: maintain flow, complete coverage.
References
- PMID 11870931