title: Clinical, angiographic and procedural characteristics of longitudinal stent deformation.
abstract: Recently, longitudinal stent deformation (LSD) has been reported increasingly. Even though the reported cases included almost all stent designs, most cases were seen in the Element™ stent design (Boston Scientific, Natick, MA, USA). It is considered that stent design, lesion and procedural characteristics play a role in the etiology of LSD. Yet, the effect of LSD on long-term clinical outcomes has not been studied well. Element stents implanted between January 2013 and April 2015 in our hospital were examined retrospectively. Patients were grouped into two according to the presence of LSD, and their clinical, lesion and procedural characteristics were studied. Twenty-four LSD's were detected in 1812 Element stents deployed in 1314 patients (1.83 % of PCI cases and 1.32 % of all Element stents). LMCA lesions (16.7 % vs 1.6 %, p < 0.001), complex lesions (75 % vs 35.1 %, p < 0.001), bifurcation lesions (37.5 % vs 18.3 %, p = 0.017), ostial lesions (33.3 % vs 12.8 %, p = 0.003), using of extra-support guiding catheter (54.2 % vs 22.3 %, p < 0.001) and extra-support guidewire (37.5 % vs 16.2 %, p = 0.005) were found to be more frequent in cases with LSD than in cases without it. In addition, the number of stents, stent inflation pressure and the use of post-dilatation were significantly different between the two groups. Two patients had an adverse event during the follow-up period. LSD is a rarely encountered complication, and is more common in complex lesions such as ostial, bifurcation and LMCA lesions. The use of extra-support guiding catheter, extra-support guidewires and low stent inflation pressure increases the occurrence of LSD. Nevertheless, with increased awareness of LSD and proper treatment, unwanted long-term outcomes can be successfully prevented.
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey. ahmetguler01@yahoo.com.tr.
authors.forename: A
authors.initials: A
authors.lastname: Guler
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: Y
authors.initials: Y
authors.lastname: Guler
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: E
authors.initials: E
authors.lastname: Acar
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: S M
authors.initials: SM
authors.lastname: Aung
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: S C
authors.initials: SC
authors.lastname: Efe
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Kilicgedik
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: C Y
authors.initials: CY
authors.lastname: Karabay
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Barutcu
authors.affiliation: Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey.
authors.forename: M K
authors.initials: MK
authors.lastname: Tigen
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Pala
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: İzgi
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: A M
authors.initials: AM
authors.lastname: Esen
authors.affiliation: Department of Cardiology, Kosuyolu Heart, Education & Research Hospital, Istanbul, Turkey.
authors.forename: C
authors.initials: C
authors.lastname: Kirma
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects* / Q000295:instrumentation*; D062906:Cardiac Catheters; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011312:Pressure; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012189:Retrospective Studies; D012307:Risk Factors; D015607:Stents; D013314:Stress, Mechanical; D013997:Time Factors; D016896:Treatment Outcome; D014421:Turkey
keywords: Accordeon; Complication; Concertina effect; Longitudinal stent compression; Longitudinal stent deformation; Percutaneous coronary intervention