title: Effects of stent design on side branch occlusion after coronary stent placement.
abstract: This study was performed to assess the immediate and long-term patency of stent-associated side branches (SB) according to the types of stent. A total of 314 patients with 332 lesions (CrossFlex stent 86, NIR 100, GFX 146) had 365 SB (>1 mm) covered by coronary stents. Side branch occlusion (SBO) occurred in 7.7% of CrossFlex stent, in 10.5% of NIR stent and in 8.8% of GFX stent (P = NS). SBO primarily occurred in SB with ostial disease, and the presence of SB ostial disease was the only independent predictors of SBO after stenting (OR 22.1, 95% CI 9.47-51.49, P < 0.001). At 6 months follow-up, 11 of 31 SBO regained the patency, but the remaining SB had persistent SBO. Delayed SBO occurred in 8 SB, being associated with the presence of SB ostial disease and in-stent restenosis. In conclusions, SBO was not associated with the types of stent design, but with the SB lesion morphology.
authors.affiliation: Department of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
authors.forename: G Y
authors.initials: GY
authors.lastname: Cho
authors.forename: C W
authors.initials: CW
authors.lastname: Lee
authors.forename: M K
authors.initials: MK
authors.lastname: Hong
authors.forename: J J
authors.initials: JJ
authors.lastname: Kim
authors.forename: S W
authors.initials: SW
authors.lastname: Park
authors.forename: S J
authors.initials: SJ
authors.lastname: Park
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation*; D016009:Chi-Square Distribution; D003097:Collateral Circulation; D017023:Coronary Angiography; D003326:Coronary Circulation / Q000502:physiology*; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D004867:Equipment Design; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011336:Probability; D015607:Stents / Q000009:adverse effects*; D016896:Treatment Outcome; D014655:Vascular Resistance