Revascularization of a thrombosed aortopulmonary shunt with the use of the AngioJet thrombectomy system.

We report the use of the AngioJet F140 rheolytic catheter to recannalize an acutely thrombosed aortopulmonary shunt in a 21-year-old female with palliated, complex congenital heart disease. After extracting the thrombus that filled the entire length of the shunt, three stents were placed at sites where the lumen was compromised by distortion or thrombus. Unobstructed flow was restored to the left pulmonary artery that persisted at 1-year follow-up.     

顺行和逆行取栓对静脉瓣膜及血管壁的影响

目的：比较顺行取栓与逆行取栓在猪腋静脉急性血栓形成对于其瓣膜功能和静脉壁形态的影响。方法：分别结扎猪的腋静脉的近远端,于结扎段内注入凝血酶原,放置６ｈ使形成血栓。随机分配为顺行取栓和逆行取栓组,对血栓段进行取栓。取栓后２４ｈ行取栓静脉插管逆行造影以评估瓣膜功能;切取此段静脉作ＣＤ８＾＋细胞免疫组化和苏木精－伊红（ＨＥ）染色以对比血管内膜及平滑肌的损伤程度。结果：逆行与顺行取栓在所有的例数中都成功地     

颈内动脉 Y 形分叉处双支架并联取栓术的有限元模拟

目的 利用有限元方法模拟单、双支架在理想颈内动脉Y形分叉处血管取栓过程,依据仿真结果分析取栓过程中支架-血栓-血管相互作用,为改善分叉处支架取栓效果提供指导。方法 利用CAD软件建立模型,利用有限元分析软件模拟单、双支架取栓过程。结果 单支架模型取栓失败,双支架模型取栓成功,并且取栓过程中血栓的最大应力是单支架的2倍,最大应变是单支架的1.12倍,血管壁表面的最大接触压强大约是单支架的2倍。结论 Solitaire双支架能够有效防止分叉处血栓移位并且成功取出血栓,但血栓中段应力水平较高存在断裂风险;取栓过程中前动脉侧血管接触压强更大,血管壁损伤风险更大。因此,有必要优化取栓支架的设计以提高其柔顺性。     

血管内治疗颈内动脉颅外段伴同侧颅内动脉急性串联闭塞

目的探讨颈内动脉颅外段伴同侧颅内动脉急性串联闭塞患者血管内治疗方法 ,评估其疗效和安全性。方法回顾性分析2015年1月至2019年12月在南阳市中心医院接受血管内治疗的63例颈内动脉颅外段伴同侧颅内动脉急性串联闭塞患者临床资料。根据治疗方式不同,分为顺行再通组(n=41)和逆行再通组(n=22)。采用改良溶栓治疗脑梗死(mTICI)血流分级判断术后血管再通程度,改良Rankin量表(mRS)评分评估术后90 d临床预后。结果两组患者年龄、性别、伴高血压病、伴糖尿病、伴心房颤动、吸烟史、术前美国国立卫生研究院卒中量表(NIHSS)评分、术前Alberta卒中项目早期CT评分(ASPECTS)、脑卒中病因等差异均无统计学意义(均P>0.05)。顺行再通组、逆行再通组分别有16例(39.0%)、15例(68.2%)接受急诊颈内动脉起始段支架植入(P=0.027),穿刺至再通时间分别为(138+55) min、(120+47) min(P<0.01),90 d恢复良好(mRS评分≤2分)分别有17例(41.5%)、15例(68.2%)(P=0.043),差异均有统计学意义。结论血管...     

Prognostic factors for acute posterior circulation cerebral infarction patients after endovascular mechanical thrombectomy: A retrospective study

This article was to analyze the factors influencing the prognosis of posterior circulation cerebral infarction (PCCI) patients, retrospectively.One hundred forty five patients diagnosed with PCCI in Nanyang Central Hospital between June 25, 2016 and October 14, 2019 were included and underwent cerebral vascular mechanical thrombectomy. The clinical data of those patients were collected. The patients were followed up for 3 months to observe the prognostic efficacy and explore the influencing factors for poor prognosis. The potential prognostic factors for PCCI patients after emergency endovascular mechanical thrombectomy were analyzed by univariate and multivariable logistic regression. The thermodynamic diagram was drawn to explore the associations between the prognostic factors.The risk of poor prognosis in PCCI patients receiving emergency endovascular mechanical thrombectomy was reduced by 0.552 time with every 1-point increase of the Alberta Stroke Program Early CT in posterior circulation score (odds ratio [OR] = 0.448, 95% confidence interval [CI]: 0.276–0.727). The risk of poor prognosis was increased by 0.827 time for each additional grade in the digital subtraction angiography-American Society of Intervention and Therapeutic Neuroradiology grading (OR = 1.827, 95% CI: 1.221–2.733, P = .003) and increased by 0.288 time for every 1-point increase in National Institutes of Health Stroke scale at 24 hours (OR = 1.288, 95% CI: 1.161–1.429). All P < .05.Alberta Stroke Program Early CT in posterior circulation score, digital subtraction angiography-American Society of Intervention and Therapeutic Neuroradiology grading, National Institutes of Health Stroke scale score at 24 hours were factors affecting the prognosis of PCCI patients undergoing emergency endovascular mechanical thrombectomy, which might provide evidence for endovascular treatment of PCCI.     

AngioJet血栓清除术在急性下肢动脉缺血治疗中的应用

目的 探讨AngioJet血栓清除术在治疗急性下肢动脉缺血(ALI)中的临床应用价值.方法 回顾性分析2015年1月至2016年11月经AngioJet血栓清除术治疗的12例ALI患者临床资料,以心肌梗死溶栓(TIMI)治疗后血流分级评估血流灌注情况,Cooley疗效评分标准评价临床疗效.结果 AngioJet血栓清除术技术成功率为91.7％(11/12),平均恢复灌注时间为(1.6±0.7)h.临床成功率为83.3％(10/12),保肢率为91.7％(11/12).TIMI分级由术前0级8例,1级4例,改善为术后即刻0级1例,1级3例,2级8例.11例(91.7％)下肢缺血症状有明显改善,1例(8.3％)术后虽经导管接触溶栓(CDT)治疗24 h,但TIMI分级仍0级且肢体缺血症状未改善,予以外科膝上截肢治疗.Cooley疗效评分显示,痊愈4例(33.3％),良好6例(50.0％),一般1例(8.3％),较差1例(8.3％),未发生严重出血并发症.结 论AngioJet血栓清除术可快速恢复ALI患者血流灌注,阻止病变进一步恶化,提高保肢率,有较好的临床应用价值.     

Trombectomia percutânea reolítica no tratamento de tromboembolismo pulmonar de alto risco: experiência inicial de um centro

For years, the treatment of high‐risk pulmonary embolism (PE) was based on two well‐defined strategies: thrombolysis, whose benefits have been documented in randomized trials, and surgical embolectomy. However, mechanical reperfusion by percutaneous techniques is used in an increasing number of patients, and is a valid therapeutic option when there is a formal contraindication to thrombolysis, as rescue therapy when thrombolysis fails to improve hemodynamics, and/or when emergency surgical thrombectomy is unavailable or contraindicated.This article discusses the indications for the use of percutaneous techniques in PE, reports the initial experience of our center with the AngioJet® thrombectomy device (Possis Medical Inc, Minneapolis, MN, USA) and reviews the available evidence, the most recent recommendations and the main complications associated with this procedure.     

Solitaire AB支架机械取栓联合动脉溶栓治疗急性缺血性脑卒中疗效观察

目的 探讨应用Solitaire AB支架机械取栓联合动脉溶栓治疗急性缺血性脑卒中的安全性及效果。方法 选取2010年1月至2014年10月应用Solitaire AB支架机械取栓联合动脉溶栓治疗的18例急性缺血性脑卒中患者, 评价其疗效和预后。结果 18例患者经支架机械取栓结合动脉溶栓后均成功获得全部或部分再通。术前与术后美国国立卫生研究院卒中量表评分相比, 差异有统计学意义(P<0.05)。3个月后疗效评估, 17例改良Rankin评分(mRS)显示预后良好, 其中0分10例, 1分6例, 2分1例;1例预后不良, mRS 4分。18例患者复查均无血管再闭塞等并发症。结论 应用Solitaire AB支架机械取栓联合动脉溶栓治疗急性缺血性脑卒中是相对安全、有效的, 但应严格把握手术适应证。     

Y-configuration double-stent-retriever thrombectomy for refractory thrombus in middle cerebral artery bifurcation: A case report

Rationale:Stent retriever mechanical thrombectomy is a recommended treatment for acute ischemic stroke. However, refractory thrombus in artery bifurcation can reduce the rate of successful revascularization.Patient concerns:A 72-year-old male, owing to the acute onset of almost complete right-sided hemiplegia and global aphasia, received bridging therapy. National Institutes of Health Stroke Scale score was 16 at the time of admission.Diagnoses:Cerebral digital subtraction angiography revealed occlusion of the M1 segment of the left MCA.Interventions:Thrombectomy with 3 passes of the Solitaire FR device (Medtronic, Minneapolis, MN) was unsuccessful. Two stent retrievers were inserted in parallel by one microcatheter access point to each M2 branch, and then both stents were gradually retrieved out of the catheter while continuous suction was maintained.Outcomes:After thrombectomy, subsequent follow-up angiograms showed mTICI 3 reperfusion of MCA. The patient has mRS 2 at discharge and the 3-month mRS score after stroke is 1 score.Lessons:The presented Y-configuration double-stent-retriever thrombectomy technique constitutes a safe and effective rescue treatment method for refractory thrombus in MCA bifurcation.