In-stent Anchoring Facilitating Side-branch Balloon Delivery for Final Kissing: A Prospective, Single-center Registry Study.
BACKGROUND
Recrossing the compromised side branch (SB) with a balloon is sometimes technically challenging. The aim of this study was to evaluate whether in-stent anchoring (ISA) is safe and effective to facilitate SB balloon delivery for final kissing.


METHODS
One hundred and fifty-nine consecutive patients were included (166 bifurcation lesions) in this prospective, single-center registry. ISA was used as a bailout method after unsuccessful SB crossing using conventional techniques, including low-profile balloons. Technique success was defined as SB balloon delivery and final kissing.


RESULTS
Kissing-balloon delivery was successfully performed with conventional strategies in 149 of 166 lesions (89.8%). In the remaining 17 lesions (10.2%), recrossing of the main vessel stent strut was not successful; therefore, ISA was attempted. The balloon successfully crossed the stent struts, and final kissing was achieved in 15 of 17 lesions (88.2%). Total final kissing was achieved in 164 of 166 lesions (98.8%), with success rates of 100% in the single-stent group and 97.6% in the two-stent group. Two cases without balloon delivery had complex bifurcation lesions with severe calcification. There was no vessel dissection in the anchoring zone.


CONCLUSIONS
ISA is safe and effective for recrossing stent struts when conventional low-profile balloons have failed. However, large-scale trials are warranted for further evaluation.
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Yu
Y
Zhou
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Han
H
Xiao
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Yu-Qing
YQ
Wang
Department of Cardiovascular, First People's Hospital of Chongqing New North Zone, Chongqing 401120, China.
Huan-Yun
HY
Liu
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Pang
P
Bao
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Yao-Ming
YM
Song
Interventional Cardiology, San Raffaele Scientific Institute, Milan, Italy.
Lorenzo
L
Azzalini
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Lan
L
Huang
Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Xiao-Hui
XH
Zhao
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000628:therapy; D054855:Drug-Eluting Stents; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012042:Registries; D016896:Treatment Outcome