Document Detail

Kissing balloon or sequential dilation of the side branch and main vessel for provisional stenting of bifurcations: lessons from micro-computed tomography and computational simulations.
MedLine Citation:
PMID:  22230150     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: This study sought to evaluate post-dilation strategies in bifurcation stenting.
BACKGROUND: In bifurcation stenting practice, it is still controversial how post-dilation should be performed and whether the kissing balloon (KB) technique is mandatory when only the main vessel (MV) receives a stent.
METHODS: A series of drug-eluting stents (DES) (n = 26) were deployed in a coronary bifurcation model following a provisional approach. After the deployment of the stent in the MV, post-dilation with the KB technique was compared with a 2-step, sequential post-dilation of the side branch (SB) and MV without kissing.
RESULTS: The percentage of the SB lumen area free of stent struts was similar after KB (79.1 ± 8.7%) and after the 2-step sequence (74.4 ± 11.6%, p = 0.25), a considerable improvement compared with MV stenting only without dilation of the stent at the SB ostium (30.8 ± 7.8%, p < 0.0001). The rate of strut malapposition in the ostium was 21.3 ± 9.2% after KB and 24.9 ± 10.4% after the 2-step sequence, respectively, a significant reduction compared with a simple SB dilation (55.3 ± 16.8%, p < 0.0001) or MV stenting only (47.0 ± 8.5%, p < 0.0005). KB created a significant elliptical overexpansion of the MV lumen, inducing higher stress concentration proximal to the SB. KB also led to a higher risk of incomplete stent apposition at the proximal stent edge (30.7 ± 26.4% vs. 2.8 ± 9.6% for 2-step, p = 0.0016).
CONCLUSIONS: Sequential 2-step post-dilation of the SB and MV may offer a simpler and more efficient alternative to final KB technique for provisional stenting of bifurcations.
Nicolas Foin; Ryo Torii; Peter Mortier; Mathieu De Beule; Nicola Viceconte; Pak Hei Chan; Justin E Davies; Xiao Yun Xu; Rob Krams; Carlo Di Mario
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  JACC. Cardiovascular interventions     Volume:  5     ISSN:  1876-7605     ISO Abbreviation:  JACC Cardiovasc Interv     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-10     Completed Date:  2012-05-16     Revised Date:  2014-09-05    
Medline Journal Info:
Nlm Unique ID:  101467004     Medline TA:  JACC Cardiovasc Interv     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-56     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
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MeSH Terms
Computer Simulation
Coronary Angiography / instrumentation*,  methods
Coronary Artery Disease / pathology,  radiography,  therapy*
Coronary Vessels / pathology*
Drug-Eluting Stents*
Finite Element Analysis
Risk Assessment
Time Factors
Tomography, X-Ray Computed / instrumentation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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