Finecross微导管在冠状动脉慢性完全闭塞病变介入治疗中的应用

目的 了解Finecmss微导管在慢性完全闭塞（chronic total occlusion,CTO）病变介入治疗中的有效性和安全性.方法 对56例在茂名市人民医院行冠状动脉造影发现CTO病变并对其进行介入治疗的患者的临床资料和手术过程进行回顾性分析.结果 56例CTO病变闭塞时间为（6.8±3.2）个月;闭塞段长度（32 ±22） mm.介入治疗成功43例,其中正向33例,逆向10例.13例失败患者中,正向6例,原因为导丝不能进入血管真腔内;逆向7例中4例导丝不能穿过病变（2例微导管和1例导丝不能通过侧支循环而终止）,2例微导管不能通过闭塞病变,1例患者术中生命体征不稳定.所有患者术后住院期间无主要心血管事件发生.结论 Finecmss微导管在CTO病变的介入治疗中是安全和有效的.     

Finecross微导管在逆行导丝技术治疗冠状动脉慢性完全闭塞病变中的应用

目的观察Finecross微导管在逆行导丝技术治疗慢性完全闭塞病变（CTO）中应用的效果。方法 35例CTO患者,其中20例右冠闭塞,15例前降支闭塞,闭塞病变的靶血管远端均有良好的侧支循环血管逆行供血,35例均采用Finecross微导管支撑导丝进行逆行冠状动脉介入治疗。结果 Finecross微导管直接通过侧支循环为25例,经小外径球囊低压力扩张侧支循环血管后Finecross微导管通过侧支循环为8例,手术最终成功30例,3例逆行导丝未通过闭塞病变,无并发症发生;2例Finecross微导管因侧支循环血管迂曲故未通过,其中1例导丝通过后微导管无法通过,且发生心包填塞,经及时治疗后未发生心血管事件,余34例未发生心血管事件。结论冠脉慢性完全闭塞病变血管成形术中合理应用Finecross可获得较好的安全性和有效性。     

左前降支支架近段完全闭塞病变一例

正冠状动脉慢性完全闭塞病变(chronic total occlusion,CTO)是一类复杂冠状动脉病变,血运重建较为困难,利用先进的血管内超声(intravascular ultrasound,IVUS)影像技术可指导寻找闭塞开口,判断真假腔,大大提高CTO的开通率。本病例为支架内再狭窄CTO,此次成功介入治疗为我     

扩张微导管在冠状动脉慢性完全闭塞病变中的应用

目的评价扩张微导管(channel dilator)在冠状动脉慢性完全闭塞(chronic total occlusion,CTO)病变介入治疗中的安全性及疗效。方法5例冠状动脉CTO患者入选。其中4例右冠状动脉病变,1例左前降支病变;开口处病变2例,3例患者闭塞处有分支存在。5例患者均采用逆向导丝技术进行冠状动脉介入治疗。结果4例患者扩张微导管顺利通过间隔支,1例顺利通过回旋支至右冠状动脉侧支;其中2例通过圈套器套扎逆向导丝的方法完成介入治疗,2例逆向导丝通过扩张微导管送至前向指引导管内,1例扩张微导管未能送至闭塞血管近段,未能开通闭塞血管。5例患者住院期间均未出现并发症及死亡。结论扩张微导管用于冠状动脉CTO病变逆向介入治疗是安全、有效的。     

螺旋穿透微导管(Tornus)在冠状动脉慢性完全闭塞病变介入治疗中的应用

目的 评价一种新的螺旋穿透微导管(Tomus)在慢性完全闭塞病变(CTO)介入治疗中应用的效果.方法 6例CTO患者在介入治疗中,导丝成功通过病变后,球囊导管未能通过病变,采用Tomus微导管的机械作用通过闭塞病变后交换球囊,从而为球囊扩张做准备.结果 所有Tomus导管均成功通过病变部位,随后球囊也均能顺利通过闭塞病变进行扩张和置入支架,术中所有患者均未出现冠状动脉穿孔等并发症.结论 Tomus导管在治疗CTO等严重冠状动脉病变中是有效的和安全的.     

双腔微导管在合并分叉病变的冠状动脉慢性完全闭塞病变行经皮冠状动脉介入治疗中的作用

目的评价双腔微导管在经皮冠状动脉介入治疗(percutaneous coronary intervention,PCI)中处理合并分叉病变的冠状动脉慢性完全闭塞病变(chronic total occlusion,CTO)的有效性与安全性。方法回顾性分析2013年10月至2015年3月于白求恩国际和平医院心内科应用双腔微导管处理合并分叉病变的CTO患者23例。收集患者的临床资料、冠状动脉造影资料,观察患者PCI成功率、并发症发生率、术后主要不良心血管事件(major adverse cardiovascular events,MACE;包括全因死亡、非致死性心肌梗死、靶血管再次血运重建)的发生率。结果应用双腔微导管对存在分叉病变的23支CTO血管进行处理,共计21支(91.3%)血管成功完成支架置入,2支血管行经皮穿刺冠状动脉腔内成形术后因靶血管过小未置入支架。所有处理的血管均实现血管开通,TIMI血流Ⅲ级,操作成功率为100%。11支(47.8%)右冠状动脉及3支(13.0%)左冠状动脉病变采用单支架策略,9支(39.1%)左冠状动脉病变采用双支架策略,其中4处采用mini-crush支架术,4处采用改良裤裙支架术,1处采用改良T支架术,所有双支架术式均完成对吻扩张。术中术后无MACE发生。结论双腔微导管可用于PCI术中协助处理存在分叉病变的CTO。     

长微球囊导管在糖尿病性小腿动脉硬化治疗中的应用

目的 初步探讨长微球囊导管在经皮腔内血管成形(PTA)治疗糖尿病性小腿动脉硬化中的临床应用.方法 糖尿病性小腿动脉硬化39例,其中男28例,女11例,共56条患肢.术前CTA(23例),MRA(16例).26条患肢小腿3条动脉(胫前、胫后和腓动脉)完全闭塞,19条患肢1条血管狭窄2条闭塞,5条患肢1条血管正常(腓动脉)2条闭塞,6条患肢2条血管狭窄1条闭塞.利用在治疗过程中对血管损伤小的长微球囊导管对小腿3条动脉狭窄或闭塞进行PTA治疗.球囊的长度选择80～120 mm,直径选择与病变血管相同或小于0.5 mm,扩张时间为3～5 min.术后进行血管造影复查,如有狭窄再次进行球囊扩张.结果 56条患肢完成PTA的有52条(92.9%).47条(83.9%)患肢远近血管的再通达到足部,踝肱指数(ABI)术前、术后分别为0.37±0.15和0.88±0.16,9条(26.5%)患肢再次出现缺血症状,其中5条患肢病变血管再狭窄,4条患肢病变血管闭塞,再次成功进行血管成形治疗.结论 利用长微球囊导管进行PTA是治疗糖尿病性小腿动脉硬化的一种安全、有效的微创方法.     

血管内超声在冠状动脉粥样硬化性心脏病诊治中应用

血管内超声(intravascular ultrasound,IVUS)显像技术是将微型化的超声探头通过导管技术送入血管腔内,实时显示血管横截面图像,可观察血管腔和血管壁动脉粥样硬化病变的形态,并可根据病变回声特性判断病变的性质,精确测定血管腔、血管的大小及病变狭窄程度,可用于指导介入治疗。1971年Bom首先发明超声导管,用于心腔和瓣膜成像。20世纪80年代末开始应用于人体冠状动脉,是第一个     

血管内超声在下肢动脉腔内治疗中的应用分析

目的:探讨血管内超声(IVUS)在下肢动脉闭塞病变患者腔内血管重建术中的应用价值.方法:回顾性分析2019年7月至2020年7月于中南大学湘雅二医院血管外科接受IVUS和数字减影血管造影(DSA)指导下腔内技术治疗的24例下肢动脉闭塞病变患者术前、术中情况和术后随访数据,比较IVUS和DSA对血管准备后残余狭窄和夹层程...     

冠状动脉病变介入治疗器械进展——微导管篇

<正>微导管在冠状动脉粥样硬化性心脏病(冠心病)的介入治疗,特别是慢性闭塞病变(CTO)的介入治疗中,起着不可或缺的作用。本文首次对冠状动脉(冠脉)介入微导管进行分类,从结构、功能及作用上共分为:普通微导管、扩张微导管、双腔微导管及延长微导管四大类,并综述了微导管的功能、操作要点、注意事项及     

Novel use of ultrasound guidance for recanalization of iliac,femoral, and popliteal arteries

Objectives : We attempted to demonstrate the safety and feasibility of intravascular ultrasound (IVUS)‐guided endluminal endovascular therapy for chronic total occlusion (CTO) of the iliac and/or femoropopliteal arteries using Treasure 12, a stiff guidewire for peripheral CTO of 0.018 in. in monodirectional approach setting. Background : Endovascular therapy for CTO of the iliac and femoropopliteal arteries is still technically challenging. Methods : Endovascular therapy was performed in 110 patients who were admitted to Hyogo College of Medicine Hospital with iliac and/or femoropopliteal artery disease from January 2006 to October 2007. We retrospectively analyzed the data of consecutive 47 patients who underwent the endovascular therapy by monodirectional approach for CTO lesions of the iliac and femoropopliteal arteries. From January 2006 to November 2006 (phase 1), standard technique was applied for the treatment of 21 lesions. From December 2006 to October 2007 (phase 2), IVUS‐guided endovascular therapy was applied for the treatment of 31 lesions. Results : Clinical and lesion characteristics in phase 1 were not significantly different from those in phase 2. The overall initial technical success rate improved from 81% in phase 1 to 97% in phase 2. There were no significant differences in radiation exposure time between phase 1 and phase 2. Total volume of contrast material was significantly smaller in phase 2 than in phase 1 (P < 0.01). Conclusions : The IVUS‐guided endovascular therapy for CTO using Treasure 12 guidewire is feasible and safe, minimizes contrast material, and has a high initial technical success rate. © 2008 Wiley‐Liss, Inc.     

Value of intravascular ultrasound in the management of coronary chronic total occlusions

Failure of guide wire crossing is the commonest reason for failed procedure in chronic total occlusion (CTO) of the coronary arteries. Intravascular ultrasound can be useful in some cases to achieve. Successful guide wire crossing into the distal true lumen of the coronary artery. We describe two cases demonstrating the role of intravascular ultrasound in successful recannalization of the CTO. © 2009 Wiley‐Liss, Inc.     

正向导丝“寻踪”技术在冠状动脉慢性完全闭塞病变逆向介入中的应用

冠状动脉慢性完全闭塞病变（chronic total occlusion,CTO）是冠心病介入治疗中最复杂病变之一、在技术上存在很大的挑战,近年来,随着新器械和新技术在CTO介入治疗中的应用,CTO开通的成功率明显提高,与单纯的前向导丝技术相比,采用逆向导丝技术治疗CTO病变的成功率更高,本文采取逆向导丝技术行经皮冠状动脉介入治疗并且应用了一种新的建立正向导丝通道,这种新的技术我们称为导丝＂寻踪＂技术,即正向导丝穿入逆向微导管来替代300 cm导丝交换的建立正向导丝通道方法,有技术优势,操作可行。     

Interventional applications of intravascular ultrasound imaging: initial experience and future perspectives

Intravascular ultrasound imaging offers the potential to provide more detailed information about vessel and lesion morphology and physiology than is currently available from angiography. The greatest impact of intravascular ultrasound upon clinical decisions may be in the area of cardiac and vascular interventions. To evaluate the utility of intravascular ultrasound, we prospectively studied 45 patients, 11 of whom underwent interventional procedures. Intravascular ultrasound imaging was performed before and after interventions using a 20 MHz, mechanically rotating transducer on either 6.5 Fr or 8.0 Fr catheter systems. Interventions included seven peripheral vessel balloon angioplasties (Femoral artery-two, Renal artery-two, Arteriovenous fistula-two, Aortic coarctation-one), two Femoral artery rotational atherectomies, and two balloon valvuloplasties (Pulmonic valve-1, Mitral valve-1). Intravascular ultrasound and digital angiography provided similar information about vessel size. However, morphological information about the vessel wall, plaque composition, plaque topography, luminal thrombus, and vessel dissections was better appreciated by intravascular ultrasound. Intravascular ultrasound was determined to have provided unique and clinically useful information in 10/11 (91%) interventions. These preliminary data illustrate the potential value of intravascular ultrasound for the evaluation of the vascular system and in particular its value in interventional procedures.     

Clinical perspectives of intravascular ultrasound

The history of intravascular ultrasound imaging, recent developments in catheter technology, and the initial in vivo experience are reviewed. Additionally, the article also discusses the potential applications of intravascular ultrasound imaging in coronary and peripheral arterial atherosclerosis, hypertension, pulmonary arterial disorders, valvular heart disease, aortic abnormalities, and in congenital heart disorders. Possible future directions are outlined.     

Intravascular Ultrasound Guided Percutaneous Coronary Intervention for Chronic Total Occlusion

Chronic total occlusion (CTO), a fascinating and dynamic niche in the realm of coronary artery disease, represents a major technical challenge for interventional cardiologists despite evolution of better guidewires, devices, experience and techniques. Effective wiring technique is the corner stone to success of percutaneous coronary intervention (PCI) in CTO. As a guide for guidewire crossing in CTO, coronary angiography is limited. On the other hand, intravascular ultrasound (IVUS) enhances the ability to identify coronary anatomy, the exact location of the guidewires within an artery, discriminating a true lumen from the false lumen before guidewire crossing. Some angiographic features have been suggested to be predictive of procedural failure, including blunt stump with a side branch at the site of occlusion. Novel use of IVUS can recognize the optimal entry point and evaluate if a guidewire properly penetrates the proximal cap of CTO.     

Assessment of arterial disease and arterial reconstructions by intravascular ultrasound

Clinical application of intravascular ultrasound to assess arterial atherosclerotic disease was introduced in humans after extensivein vitro andin vivo animal studies. Real-time images, obtained with a 30 MHz element mounted on a 5 F catheter, consistently confirmed angiographic images, up till now considered to be the gold standard. In addition to these data, ultrasonic cross-sectional imaging provided information on the composition of atheroselectic lesions and the size and shape of the lumen. Based on the experimentally derived criteria for tissue characterization, a better insight into arterial morphology could be obtained, allowing improved planning of interventional or reconstructional procedures.Moreover intravascular ultrasound has proved valuable as a post-interventional procedure to monitor and assess the quality of interventional results. The ultrasound images are clearly superior to angiographic studies, albeit the ultrasonic information is an adjunct to angiography and, as yet, not a substitute.We present our initial experience with intravascular ultrasound obtained in patients with substantial peripheral arterial disease.     

扩张微导管在慢性完全闭塞病变中的应用价值--经桡动脉正向介入治疗

目的：评价135 cm扩张微导管（corsair导管,Asahi Intec Co,Japan）在冠状动脉慢性完全闭塞（chronic total occlusion,CTO）病变经桡动脉正向经皮冠状动脉介入治疗（percutaneous coronary intervention,PCI）中的有效性及安全性。方法回顾性入选了本中心2010年6月至2014年2月81例经桡动脉途径应用135 cm扩张微导管进行正向导引钢丝技术治疗的CTO病变患者,分析正向CTO-PCI成功率、扩张微导管通过闭塞病变成功率、球囊导管通过闭塞病变情况及导引钢丝通过闭塞病变情况,并观察住院期间不良事件发生率。结果81例应用135 cm扩张微导管经桡动脉正向介入治疗的患者中,66例患者正向导引钢丝通过CTO病变,65例患者正向CTO-PCI成功,成功率为80.2%;另有8例成功进行逆向导引钢丝介入治疗,总体PCI成功率90.1%。66例正向导引钢丝通过闭塞病变后,135 cm扩张微导管成功通过闭塞病变56例（84.8%）;扩张微导管通过闭塞病变后,球囊导管的使用数量为1.3个,显著低于扩张微导管未通过闭塞病变患者。66例正向导引钢丝通过闭塞病变的患者中,应用Fielder XT导引钢丝34例（51.5%）。住院期间随访未见扩张微导管嵌顿、折断、头端受损、血管穿孔等不良事件发生,无严重不良心脏事件发生。结论应用扩张微导管经桡动脉途径行正向CTO-PCI治疗是安全、有效的,可以简化介入治疗操作步骤,减少球囊导管等器械的使用,提高CTO病变介入治疗的手术成功率。