Application of a rapid exchange extension catheter technique in type  

作　　者：Hong-Chao Wang Wei Lu Zi-Han Gao Ya-Nan Xie Jie Hao Jin-Ming Liu 

机构地区：[1]Department of Cardiology,The Second Hospital of Hebei Medical University,Shijiazhuang 050000,Hebei Province,China [2]Department of Cardiology,The Third Hospital of Shijiazhuang City,Shijiazhuang 050000,Hebei Province,China

出　　处：《World Journal of Clinical Cases》2021年第12期2751-2762,共12页世界临床病例杂志

摘　　要：BACKGROUND In transradial intervention procedures,poor back-up support and noncoaxial alignment of the guide catheter(GC)may result in failure of the balloon or stent to reach the targeted lesion.Methods to provide extra back-up support using the original GC and wire can improve procedural success with reduced complications.A rapid exchange guide extension catheter provides convenient and efficient back-up support while preserving the initial GC and inserted wire.AIM To evaluate the efficacy and safety of rapid exchange extension catheter in the treatment of type B2/C nonocclusive coronary lesions via the radial access.METHODS A total of 135 patients with type B2/C nonocclusive lesions who were treated via the transradial approach were enrolled in the study.The clinical characteristics,indications for use of the rapid exchange extension catheter,and procedural details and results were reviewed and analyzed.All procedure-related complications and major adverse cardiovascular events were recorded during the in-hospital stay and follow-up period.RESULTS The most common indication for the use of a rapid exchange extension catheter was vascular tortuosity(37.8%),followed by heavy calcification(28.9%),long lesions(20.0%),proximal stent(6.7%),in-stent restenosis(5.2%),and coronary origin anomalies(1.5%).The following technologies failed in passing targeted lesions before delivering the rapid exchange catheter:Multiple predilatation technique(57%),buddy wire technique(33.4%),balloon anchoring technique (5.9%), and cutting balloon modification (3.7%). The mean depth of the extensioncatheter intubation was 20.56 ± 13.05 mm, and the mean rapid exchange catheterservice time was 18.9 ± 9.7 min. The mean length and diameter of stents were 33.5± 14.4 mm and 2.75 ± 0.45 mm, respectively. The total rate of technique success(balloon or stent successful crossing of the target lesion with this technique) was94.8%.CONCLUSIONThe rapid exchange extension catheter technique showed acceptable safety andefficacy in the transradial cor

关 键 词：Transradial intervention Mother-child extension catheter Percutaneous coronary intervention Exchange extension catheter Backup support Type B2/C nonocclusive coronary lesions 

分 类 号：R541.4[医药卫生—心血管疾病]