126例血管造影患者动脉粥样硬化性肾动脉狭窄的临床分析

目的了解中老年冠心病患者动脉粥样硬化性肾动脉狭窄（ARAS）的发生率及探讨患者ARAS的相关因素。方法对126例确诊或疑诊冠心病的中老年患者行冠状动脉、肾动脉造影。以肾动脉狭窄（RAS）为因变量，临床因素为自变量，进行单变量Logistic回归分析。结果126例中24例有RAS,占19．04％；13例有明显RAS，占10．32％。24例RAS患者有28支狭窄肾动脉，狭窄位于肾动脉开El处为60．7％（17／28），肾动脉主干处为35．7％（10／28），分支处狭窄为3．57％（1／28）。64例确诊为冠状动脉粥样硬化患者中18例有肾动脉狭窄，ARAS的发生率为28．13％（18／64）；62例冠脉造影阴性患者有6例存在肾动脉狭窄，ARAS发生率为9．68％（6／62）。Logistic回归分析显示，冠脉病变、高脂血症、吸烟、肾功能不全与ARAS病变密切相关。结论在确诊或疑诊冠心病的中老年患者中，ARAS的发生率为19．04％；在确诊冠脉粥样硬化的患者中．ARAS的发生率明显高于冠脉造影阴性者。冠脉病变、高脂血症、吸烟、肾功能不全是ARAS的相关因素。     

自体肾移植治疗肾动脉支架成形术后再狭窄一例

患者 男性，50岁。4年前因顽固性高血压发现双侧肾动脉狭窄．其中左侧肾脏狄窄度较重，肾脏明显萎缩，同位素检查证实该侧肾脏已经基本丧失功能；右侧肾脏功能相对较好。于本院血管外科行左侧肾动脉球囊扩张成形加支架术（PTA＋Stent）。植入支架为球扩式血管内支架，5mm×18mm。术后患者恢复良好，在无降压药物控制的情况下，血压由22．3／14．9kPa（1mmHg=0．133kPa）降至17．3／11．3kPa。[第一段]     

介入诊疗技术在肾移植临床上的应用(附14例报告)

目的：探讨介入诊疗技术在肾移植临床上的应用。方法：回顾性分析14例肾移植术后患者接受介入诊疗的临床资料．其中肾移植术后肾功能丧失8例。移植肾动脉血栓形成2例．移植肾动脉狭窄2例。假性动脉瘤和术后并发重症高血压各1例。结果：对8例移植肾失功能者进行动脉造影。3例显示血管堵塞未予处置，另5例进行移植。肾动脉栓塞。其中3例栓塞术后完全停用免疫抑制剂．1例用小剂量激素维持．1例手术切除移植肾。1例重症高血压者经自体肾动脉栓塞．血压得到很好控制。接受肾动脉栓塞术患者均出现“栓塞后综合征”。2例移植肾动脉血栓形成患者溶栓成功．但。肾功能未恢复。2例移植肾动脉狭窄患者．1例放置支架失败。仅进行球囊扩张，术后血压控制良好。肾功能恢复。但6个月后血压再次升高、肾功能严重受损而行栓塞治疗，1例未处置。术后高血压得到控制。1例移植肾假性动脉瘤者经动脉造影证实后手术切除。结论：移植肾或自体肾动脉栓塞可替代手术切除移植肾和治疗肾移植术后重症高血压；移植肾动脉血栓形成可作溶栓治疗；移植肾动脉狭窄进行球囊扩张远期效果不佳。     

球囊扩张在股腘及膝下分支动脉硬化性缺血治疗中的应用

目的初步总结单纯球囊扩张治疗下肢动脉硬化性狭窄和闭塞病变的近期疗效。方法30例下肢动脉硬化性病变接受单纯球囊扩张治疗的患者,其中股浅动脉病变19例次,胭动脉以远病变12例次（4例次同时合并股浅动脉病变,1例球囊扩张,另3例行膝上股胭搭桥）;行普通球囊3例次,切割球囊16例,膝下小球囊12例。结果成功完成所有操作,股浅动脉扩张中6例（31．6％）出现夹层。扩张后即时造影示病变处管径明显改善,血流通畅,夹层对血流影响不明显,未行特殊处理。平均跟踪随访6个月（1—17个月）,除1例（3．3％）合并足趾坏疽的患者疼痛无缓解,1个月后因足部坏疽感染行膝上截肢外,其他患者症状体征均有显著改善,超声示病变处血流通畅。结论球囊扩张对下肢动脉硬化性狭窄和闭塞有一定疗效和近期通畅率。     

肾动脉狭窄80例外科治疗

目的 探讨肾动脉狭窄外科治疗方法的选择和疗效.方法 回顾性分析1997年11月到2008年8月80例肾动脉狭窄患者的外科治疗经验.男性53例,女性27例,年龄9～80岁.病变包括动脉硬化42例,大动脉炎23例,肌纤维发育不良11例.共接受外科治疗83人次,其中腹主动脉肾动脉旁路术13例,自体肾移植术5例,肾切除术1例,肾动脉内膜切除术1例,肾动脉狭窄段切除吻合术1例,球囊扩张术14例,支架成形术48例.结果 围手术期死亡1例.63例获得随访,随访时间1～129个月,2例死亡.随访患者血压(135.7±15.8)/(80.1±8.5)mm Hg(1 mm Hg=0.133kPa),较术前(149.8±18.3)/(88±13.6)mm Hg下降(P<0.01).总的降压有效率为65.6%,动脉硬化、大动脉炎、肌纤维发育不良患者的降压有效率分别为50%、73.3%和100%(P<0.05).随访患者肌酐(112.7±53.6)/μmol/L,低于术前(131.7±91.7)μmol/L(P<0.05).结论 肾动脉狭窄通过外科治疗可以有效改善血压和肾功能,动脉硬化病变首选支架成形,肌纤维发育不良性病变首选球囊扩张,大动脉炎性病变首选手术治疗.     

静脉镇痛在持续性球囊扩张治疗胆肠吻合口狭窄中的应用

[摘 要] 目的 探讨静脉镇痛在持续性球囊扩张治疗胆肠吻合口狭窄中的有效性和安全性。方法回顾性分析18例行持续性球囊扩张治疗的胆肠吻合口狭窄患者的临床资料,比较围手术期静脉镇痛与常规镇痛效果及不良反应的发生情况。结果 术中静脉镇痛11例,镇痛有效率100%（11/11）,不良反应发生率18.2%（2/11）;术中常规镇痛7例,镇痛有效率42.9%（3/7）,不良反应发生率85.7%（6/7）,两组镇痛有效率及不良反应发生率有统计学差异（P < 0.05）。术后静脉镇痛9例,有效率100%（9/9）,不良反应发生率33.3%（3/9）;术后常规镇痛9例,有效率44.4%（4/9）,不良反应发生率44.4%（4/9）,两组镇痛有效率差异有统计学意义（P < 0.05）,不良反应发生率无统计学差异（P > 0.05）。结论 持续性球囊扩张治疗胆肠吻合口狭窄围手术期宜采取静脉镇痛。     

球囊扩张联合钬激光治疗输尿管狭窄21例临床观察

目的：探讨球囊扩张联合输尿管镜钬激光内切开治疗输尿管狭窄的临床效果。方法：对21例输尿管狭窄的病例,行球囊扩张联合输尿管镜钬激光内切开术治疗,同时处理合并的输尿管结石。结果：21例患者总有效率95％,其中治愈率80．9％、好转率14．2％,1例无效;随访6个月,合并的输尿管结石粉碎后均排出。结论：球囊扩张联合输尿管镜钬激光内切开是治疗输尿管狭窄的首选方法,具有效果满意、创伤小、恢复快和安全等优点。     

同种异体肾移植术后移植肾动脉狭窄 介入治疗的临床疗效分析

目的探讨同种异体肾移植术后移植肾动脉狭窄（TRAS）介入治疗的临床疗效。方法介入治疗同种异体肾移植术后TRAS患者22例,其中单纯球囊扩张治疗10例（球囊组）,内支架治疗12例（支架组）。对所有患者术前及术后2年内血压、肾功能以及生活质量进行评估,并与同期接受单纯药物治疗的6例TRAS患者（药物组）进行比较。结果球囊组技术成功率90.00%,支架组技术成功率100%。术后在血压及肾功能改善方面,球囊组和支架组均取得显著疗效,两组近期疗效未见明显差异,药物组疗效不满意。术后随访6个月～2年,支架组再狭窄率16.67%,除1例不明原因治疗无效外,其余11例均能比较健康的生活和工作。球囊组手术失败1例,再狭窄率达40.00%。结论内支架植入术可作为TRAS特别是I型及Ⅱ型狭窄的首选治疗方法。     

27例多发性大动脉炎血管介入治疗

目的探讨血管介入治疗多发性大动脉炎(Takayasu arteritis,TA)所致血管狭窄或闭塞性病变的临床疗效。方法 2003年6月～2011年6月对27例TA经股动脉穿刺选择性血管造影,确定病变部位,明确诊断,并对因大动脉炎引起的锁骨下动脉、颈动脉、肾动脉、腹主动脉病变进行了选择性球囊扩张或支架植入手术。结果 27例施行血管腔内扩张成形术或支架植入术,其中颈总动脉扩张10例,支架2例;锁骨下动脉扩张6例;腹主动脉扩张4例;肾动脉扩张10例,支架4例;无名动脉扩张1例,支架1例;共置入支架7枚。2例颈动脉扩张时因并发症而终止治疗,其余病例病变血管均获得满意的治疗。27例随访5个月～7年,平均4年,其中<12个月6例,1～3年12例,3～5年6例,>5年3例:11例头晕、视觉异常等脑缺血症状改善;12例肾动脉狭窄所致高血压经球囊扩张及支架植入后血压控制正常;2例肾动脉狭窄在球囊扩张后14、18个月再次发生血压增高,造影显示扩张后肾动脉再次狭窄,再次行肾动脉球囊扩张成形术,扩张后高血压恢复正常。结论介入性血管内成形术治疗TA所致血管狭窄或闭塞性病变疗效满意。     

主动脉-肾动脉自体大隐静脉旁路术治疗大动脉炎性肾动脉狭窄33例分析

目的 分析主动脉-肾动脉自体大隐静脉旁路术治疗大动脉炎性肾动脉狭窄的近期及中长期疗效.方法 回顾性分析1997年3月至2009年3月采用主动脉-肾动脉大隐静脉旁路术治疗的连续33例大动脉炎性肾动脉狭窄患者的临床资料.其中男性9例,女性24例;年龄8 ～ 54岁,平均(25±11)岁;病程3～26个月,平均(9±5)个月.所有患者存在高血压,其中17例为难控性高血压,平均血压( 175±26)/(100±19)mmHg(1 mmHg =0.133 kPa),平均降压药物用量(2.1±0.6)个每日规定量(DDD).3例合并充血性心力衰竭,1例依靠持续血液滤过治疗生存.术前估算肾小球滤过率为(78±5)mL/min.结果 共对39条肾动脉行旁路术治疗,包括单侧27例和双侧6例.肾动脉即时复通率100％.所有患者存活并成功随访12～146个月,平均(56±18)个月.随访过程中发生移植物闭塞2例,移植物狭窄4例,4例狭窄均通过经皮球囊扩张术成功治疗,其中1例6个月后发生再狭窄.1年、3年、5年一期通畅率分别为92％、89％、79％,一期辅助通畅率和二期通畅率相同,分别为95％、95％、91％.末次随访平均血压降至136/80 mmHg(P =0.000),平均降压药物用量降为0.6 DDD(P =0.000),平均估算肾小球滤过率增至91 ml/min(P =0.044).3例充血性心力衰竭均缓解,1例肾功能不全患者不再依赖持续血液滤过治疗.结论 主动脉-肾动脉自体大隐静脉旁路术治疗大动脉炎性肾动脉狭窄近远期疗效确实,通畅率高.     

肾动脉狭窄支架植入后狭窄复发的自体肾移植治疗(附6例报告)

目的：探讨肾动脉狭窄(RAS)经皮支架植入术后狭窄复发的治疗措施。方法：对6例肾动脉内支架植入后再狭窄患者行自体肾移植术治疗。结果：随访8～88个月(平均29个月)，6例自体肾移植后，2例血压转为正常，4例得到改善。3例肾功能不全中，1例改善，2例稳定。结论：自体肾移植术对肾动脉内支架植入后狭窄复发是一种安全、有效的治疗方法，能明显降低血压和改善肾功能，可列为首选。     

肾动脉狭窄的腔内治疗经验

目的探讨腔内治疗肾动脉狭窄的临床疗效及影响因素。方法2003年2月至2005年6月共收治19例肾动脉狭窄患者,分析其中行腔内治疗12例的临床资料。其中动脉硬化9例,多发性大动脉炎1例,纤维肌性发育不良2例。结果本组12例,均有严重高血压,1例肾功能异常。支架置入10例,技术成功率91．7％(11／12)。随访12例,随访时间3—15个月,随访平均6．5个月,患者血压从(172±26／98±15)降至(156±22／88±14)mmHg。高血压治愈2例,改善6例,未愈4例,高血压控制率为66．7％。术后肾功能无明显变化。无并发症和死亡病例。再狭窄1例,再狭窄率为8．3％。结论严格掌握手术适应证,腔内治疗肾动脉狭窄是安全、有效的。     

Value of Doppler ultrasound for the diagnosis of renal artery stenosis in children

To evaluate the reliability of Doppler ultrasonography (US) in identifying children with renal artery stenosis (RAS) among those with hypertension, we compared Doppler US results in 22 hypertensive children (mean age 8.9±4.3 years), with (13 cases) and without RAS at angiography, and in 33 normotensive children (mean age 8.8±4.7 years). We observed 2 false-negatives and 2 false-positives with Doppler US. Of the 2 false-negative diagnoses, 1 had RAS on an accessory renal artery located behind a normal upper polar artery and the other was observed in a patient with bilateral multiple stenosis of the very distal segments of renal arteries. The 2 false-positive diagnoses were due to sinuous left renal artery and to technical reasons, respectively. In another patient, Doppler US showed a tight RAS, while arteriography was normal. RAS was subsequently confirmed by a second arteriography. Peak systolic velocity values of Doppler US were significantly higher in patients with proven angiographic RAS (3.44±0.66 m/s) than in hypertensive patients with normal renal arteries at angiography (0.99±0.35 m/s, P <0.0001) and normotensive healthy children (1.04±0.23 m/s, P <0.0001). With the use of multiple views, and the experience acquired with practice, false-negatives or false-positives due to the geometry of the renal artery can be avoided. Nevertheless, very distal stenosis can be missed by Doppler US. Received October 30, 1995; received in revised form April 16, 1996; accepted May 14, 1996     

Follow-up of renal artery stenosis by duplex ultrasound

We have previously shown that duplex ultrasound is an accurate method of diagnosing renal artery stenosis (93% accuracy compared with angiography in the diagnosis of less than 60% stenosis, 60% to 99% stenosis, or occlusion). With this method we have now serially observed 35 renal arteries with 60% to 99% renal artery stenosis in 27 patients. Nineteen stenotic renal arteries in 15 patients were observed without intervention. There was a significant decrease in kidney size (mean difference - 1.0 cm; p less than 0.01; mean follow-up 13 months) but all 19 renal arteries remained patent. Percutaneous transluminal angioplasty (PTA) was performed in five patients (six renal arteries) for renovascular hypertension. Renal duplex scanning documented relief of renal artery stenosis in two patients whose hypertension improved after PTA and confirmed residual 60% to 99% renal artery stenosis in three patients whose hypertension did not improve after PTA (mean follow-up 6.5 months). Aortorenal bypass was performed for 10 stenotic renal arteries in seven patients. At a mean follow-up of 9 months duplex ultrasound documented eight patent and two occluded aortorenal bypass grafts. Duplex ultrasound is useful both for defining the natural history of untreated renal artery stenosis and assessing the results of renal artery angioplasty or bypass.     

Two cases of atherosclerotic renal artery stenosis treated by percutaneous transluminal renal angioplasty and intravascular stent placement, leading to improvement of hypertension and renal function

We describe here two cases of renal artery stenosis(RAS) caused by atherosclerosis. Both patients were treated by percutaneous transluminal renal angioplasty(PTRA) and stent placement, leading to the improvement of renal function as well as hypertension. The two patients were a 75-year-old male(case 1) and a 56-year-old male(case 2), who both showed mild proteinuria, renal dysfunction, and refractory hypertension. Case 1 showed a unilateral ostial stenosis in the left main renal artery. On the other hand, case 2 showed an ostial stenosis in the left renal artery and a widespread narrowing in the right renal artery. After evaluation of the lesions by renal Doppler sonography, renogram, magnetic resonance signal intensity, and magnetic resonance angiography(MRA), each stenosis was treated by balloon angioplasty and intravascular stent placement without any major complications. Thereafter, in addition to hypertension, renal function also ameliorated significantly, and has remained stable for more than 12 months. Non-invasive screening tests and appropriate therapy for renovascular lesion should be considered in the case of elderly patients with refractory hypertension and progressive renal dysfunction, since ischemic nephropathy is increasing as a common cause of end stage renal disease and is showing favorable outcomes of revascularization.     

微创治疗锁骨下动脉窃血综合征的探讨

目的:探讨经皮腔内血管成形术(PTA)及内支架置放术治疗锁骨下动脉窃血综合征(SSS)的疗效。方法:应用PTA及内支架置放术治疗锁骨下动脉狭窄所致SSS病人78例,其中单纯行PTA者22例,PTA加支架置放术56例。结果:78例病人全部获得成功。随访66例,随访时间1～71个月(平均27个月),随访率84.6%。随访病例经彩超及多普勒血流图检查,均未发生病变部位再狭窄,血流通畅良好,椎动脉均呈正常血流,放置支架无脱落及移位。结论:PTA及内支架置放术治疗锁骨下动脉起始段狭窄所引起的SSS是一种创伤小、疗效满意、安全可行的微创治疗方法,但操作应耐心、仔细和规范化。     

Detection of significant renal artery stenosis with color Doppler sonography: combining extrarenal and intrarenal approaches to minimize technical failure

BACKGROUND: Renal artery disease can cause both hypertension and renal failure, and color Doppler sonography (CDS) may be a good screening method to detect it. Presently reported techniques of Doppler sonography have either a high rate of technical failure (4-42%), or low sensitivity and specificity, or detect only stenoses greater than 70%, or exclude patients with renal failure from analysis. In previous studies Doppler detection of renal artery stenosis (RAS) was based either on increased intrastenotic velocity or on the detection of post-stenotic Doppler phenomena. In the present prospective study these two approaches were combined to detect RAS (> or = 50% diameter reduction) in 226 consecutive patients (144 with normal and 82 with impaired renal function). METHODS: Stenosis of 50% or more was diagnosed if the maximal systolic velocity in the main renal artery was more than 180 cm/sec and velocity in the distal renal artery less than one quarter of the maximum velocity. When these velocities could not be determined a diagnosis of RAS was made when the acceleration time in intrarenal segmental arteries exceeded 70 msec. All patients subsequently underwent arteriography as the gold standard for the detection of RAS. RESULTS: With this combined approach, the technical failure rate of CDS was 0% in both patients with normal and those with impaired renal function. The mean time required for the Doppler investigation was 17 minutes. The sensitivity and specificity for detection of a significant stenosis in a given vessel (including accessory arteries), as compared to angiography, were 96.7% and 98.0%. CONCLUSION: Color Doppler sonography, evaluating both main renal and intrarenal arteries is an ideal screening method for detection of RAS of 50% or more because it allows accurate and rapid detection of stenosis in all patients, irrespective of renal function.     

Renal Artery Stenosis: To Intervene,or Not to Intervene, “That is the Question”

Renal artery stenosis (RAS) due to atherosclerosis continues to be a major cause of secondary hypertension. It can also lead to renal dysfunction due to ischemic nephropathy. While major clinical trials have emphasized that medical management should be preferred over angioplasty and stenting for the treatment of renal artery stenosis, clinical scenarios continue to raise doubts about the optimal management strategy. Herein, we present two cases that were admitted with hypertensive emergency and renal function deterioration. Medical therapy failed to control the blood pressure and in one patient, renal failure progressed to a point where renal replacement therapy was required. Both patients underwent angioplasty (for >90% stenosis) and stent insertion with successful resolution of stenosis by interventional radiology. Postoperatively, blood pressure gradually decreased with improvement in serum creatinine. Dialysis therapy was discontinued. At 4‐ and 8‐month follow‐up, both patients continue to do well with blood pressure readings in the 132–145/70–90 mmHg range. This article highlights the importance of percutaneous interventions in the management of atherosclerotic RAS and calls for heightened awareness and careful identification of candidates who would benefit from angioplasty and stent insertion.     

Evaluation and management of bilateral renal artery stenosis in children: A case series and review

This report describes the clinical course, diagnostic evaluation and management of six children with bilateral renal artery stenosis (RAS) and concurrent narrowing of the abdominal aorta. Except for one child with active arteritis, the others were asymptomatic. There were no clinical or laboratory features suggesting the etiology of hypertension in four of six patients, and diagnostic procedures, including Doppler duplex ultrasound and captopril scintigraphy, were unreliable in screening for such hypertension. Abdominal aortography and selective renal angiography confirmed the diagnosis of bilateral RAS and associated anatomical alterations of the aorta and its branches. The hypertension was severe and minimally responsive to antihypertensive agents. It was cured or improved after percutaneous transluminal angioplasty (PTA) of three vessels in two children with mid-vessel stenoses, while hypertension persisted after PTA of two mid-vessel stenoses in a third child and one vessel with ostium stenosis in a fourth child. Autotransplantation of seven kidneys in four children resulted in cure or significant improvement of the hypertension. Renal function was preserved in all children during a mean follow-up time of 41 months. Based on illustrative data from these six children, as well as information from a review of the literature, this report discusses the key diagnostic issues and stresses the potential advantages of renal autotransplantation in selected children with this disorder.