Hemodynamic change in wall shear stress in patients with coronary bifurcation lesions treated by double kissing crush or single-stent technique.

Abstract:

BACKGROUND:Fluid dynamic mechanisms attributed to coronary bifurcation lesions remain a subject of study. The present study aimed at investigating the hemodynamic change of wall shear stress (WSS) in patients with coronary bifurcation lesions treated by double kissing (DK) crush or one-stent with final kissing balloon inflation (FKBI). METHODS:Eighty-one patients with bifurcation lesions treated by stenting who had 3-D model reconstruction were studied. The bifurcation vessels were divided into main vessel (MV), main branch (MB), side branch (SB), and polygon of confluence (POC). MB and SB were classified by internal- and lateral-subsegments, respectively. RESULTS:The baseline magnitude of WSS in proximal MV, POC-MV, POC-MB, POC-SB and MB-internal segments increased significantly, compared to MB-lateral, SB-internal and SB-lateral. DK crush had the potential of uniformly reducing WSS, turbulent index and the WSS gradient. The WSS value at the POC-SB and SB in the one-stent group remained higher. The turbulent index and WSS gradient between the POC-SB minus the SB-lateral had equal predictive values for in-stent restenosis (ISR). CONCLUSION:Fluid dynamic results favor the use of DK crush over the one-stent technique.

journal_name

Chin Med J (Engl)

journal_title

Chinese medical journal

authors

Chen SL,Kan J,Zhang JJ,Hu ZY,Xu T

subject

Has Abstract

pub_date

2012-05-01 00:00:00

pages

1720-6

issue

10

eissn

0366-6999

issn

2542-5641

journal_volume

125

pub_type

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