■为了研究可行性,超声介入治疗自体动静脉瘘(AVF)经皮腔内血管成形术(PTA)后早期再狭窄的方法和效果。
■从2018年4月至2021年12月,69例AVF早期再狭窄患者接受了超声引导下镍钛诺支架植入术(UNSI)并进行了随访。通过超声观察支架和手术的影像学特征。技术成功率,记录并统计临床成功率和并发症发生率。靶病变原发通畅(TLPP),评估了接入电路初级通畅性(ACPP)和接入电路次级通畅性(ACSP)。
■超声检查可以显示支架的结构,并清楚地指导支架置入过程。技术和临床成功率均为100%。31例患者有支架内再狭窄(ISR),通过普通球囊(PB)PTA或药物涂层球囊(DCB)PTA治疗。3、6、12和24个月时TLPP为100.0%,94.2%,63.4%和39.6%,分别。3、6、12和24个月的ACPP为98.6%,91.6%,60.2%和35.2%,分别。3、6、12和24个月的ACSP为98.6%,98.6%,95.6%和93.8%,分别。DCBPTA术后3、6、12个月ISR的TLPP为100.0%,100.0%和93.6%,分别。
■这项初步研究表明,超声检查可以准确指导镍钛诺支架在AVF中的植入,该技术是一种可行的微创治疗PTA术后早期再狭窄的方法,具有良好的中短期通畅性。DCBPTA可用于处理ISR,是延长镍钛诺支架通畅的一种方法。
UNASSIGNED: To investigate the feasibility, methods and effects of interventional ultrasound in nitinol stent implantation to treat early restenosis after percutaneous transluminal angioplasty (PTA) in autogenous arteriovenous fistula (AVF).
UNASSIGNED: From April 2018 to December 2021, 69 patients with early restenosis of AVF received ultrasound-guided nitinol stent implantation (UNSI) and were followed-up. Imaging features of the stent and procedure by ultrasound were observed. The technical success rate, clinical success rate and incidence of complications were recorded and counted. Target lesion primary patency (TLPP), access circuit primary patency (ACPP) and access circuit secondary patency (ACSP) were estimated.
UNASSIGNED: Ultrasonography can show the structure of the stent and guide the stenting process clearly. Both the technical and clinical success rates were 100%. Thirty-one patients had in-stent restenosis (ISR), which was treated by plain balloon (PB) PTA or drug coated balloon (DCB) PTA. The TLPP at 3, 6, 12 and 24 months were 100.0%, 94.2%, 63.4% and 39.6%, respectively. The ACPP at 3, 6, 12 and 24 months were 98.6%, 91.6%, 60.2% and 35.2%, respectively. The ACSP at 3, 6, 12 and 24 months were 98.6%, 98.6%, 95.6% and 93.8%, respectively. The TLPP of ISR after DCB PTA at 3, 6 and 12 months were 100.0%, 100.0% and 93.6%, respectively.
UNASSIGNED: This pilot
study indicates ultrasonography can accurately guide nitinol stent implantation in AVF and this technique is a feasible and minimally invasive treatment for early restenosis after PTA with good short- and medium-term patency. DCB PTA may be used to deal with the ISR and is a way to prolong the patency of nitinol stent.