Controlled trial of high-versus low-dose aspirin treatment after percutaneous transluminal angioplasty in patients with peripheral vascular disease

Percutaneous transluminal angioplasty of aortoiliac and femoropopliteal atherosclerotic lesions can provide long-lasting hemodynamic improvement. High-dose aspirin is commonly prescribed as reocclusion prophylaxis, but low doses would be preferable because of fewer adverse effects. We performed a double-blind, randomized, controlled clinical trial in patients with peripheral vascular disease with lesions appropriate for angioplasty. We compared the efficacy and side effects of two doses of aspirin (50 mg vs. 900 mg daily) during a period of 12 months after angioplasty. A total of 359 patients were evaluated: 175 were randomly assigned to treatment with 900 mg aspirin daily and 184 to 50 mg aspirin a day. Thirty-nine patients developed restenosis at the angioplasty site; the cumulative percentage of event-free survival after 1 year (patency rate) was 85% in the 900-mg group and 84% in the 50-mg group. An equivalence test showed the two groups equivalent with respect to restenosis rates (P = 0.003 for an equivalence region of < 10% difference). Nine patients (5%) in the 900-mg group had serious gastrointestinal side effects (peptic ulcer, eight; erosive gastritis requiring transfusion, one) compared to two (peptic ulcer) in the 50-mg group (P = 0.03). The results of our study show that a dose of 50 mg aspirin a day is as effective as one of 900 mg for the prevention of restenoses after lower limb angioplasty, and that severe gastrointestinal side effects are less frequent.Abbreviation PTA percutaneous transluminal angioplasty This work was supported by grants from the Bundesministerium für Forschung and Technologie, Germany Correspondence to: C. Ranke     

Efficacy and tolerance of recombinant tissue-type plasminogen activator in patients with thrombotic or embolic occlusions of leg-arteries

Summary The efficacy and safety of recombinant tissue-type plasminogen activator (rt-PA) was evaluated in 46 patients with thrombembolic arterial occlusions in leg arteries. rt-PA was given over 1–4 h with a maximum dose of 18 mg. The effect of rt-PA treatment was determined as patency of the occluded arteries in 44 different patients 14 days after treatment. In 41 patients at least one artery was recanalized (93%) by rt-PA, and in almost half of these patients (48%) no residual stenosis were detected after the lytic treatment. A slight residual stenosis was detected in 29% of the patients and a severe residual stenosis in 21%. An additional treatment with percutaneous transluminal angioplasty was performed in 23 of the 44 patients and successful in 21 (91%). In 8 patients an addition catheter-embolectomy was performed. No difference in patency rate was detected between patients with thrombotic and those with embolic occlusions. The age of the occlusion influenced the patency rate; occlusions under the age of 5 weeks showed a patency rate of 96% compared to 82% in older occlusions. The length of the occlusion did not have any influence on the outcome of the rt-PA treatment. From the results of this open study we conclude that a dose of up to 18 mg of rt-PA is both safe and effective in the treatment of thromboembolic occlusions in leg arteries.Abbreviations rt-PA recombinant tissue-type plasminogen activator - GGT gamma-glutamyltransferase - SGOT aspartate aminotransferase - SGPT alanine aminotransferase - LDH lactate dehydrogenase - PTA percutaneous transluminal angioplasty Dedicated to Prof. Dr. N. Zöllner on the occasion of his 70th birthday     

Comparison of the Safety and Effectiveness of Lower Extremity Artery Bypass Grafting and Endovascular Angioplasty in the Treatment of Lower Extremity Arteriosclerosis Obliterans in the Elderly

Objective:To compare the safety and effectiveness of lower extremity artery bypass grafting and endovascular angioplasty in the treatment of lower extremity arteriosclerosis obliterans in the elderly.Methods:The data of 87 elderly patients with lower extremity arteriosclerosis obliterans treated in our hospital from August 2015 to August 2017 were analyzed retrospectively.According to the different treatment methods,they were divided into angioplasty group(n=45,intravascular angioplasty) and bypass grafting group(n=42,lower extremity artery bypass grafting).The success rate,hemodynamics of dorsalis pedis artery and nerve conduction of lower extremity were compared between the two groups Velocity,VAS score,late target vessel lumen loss(LLL),patency rate,restenosis rate,ankle brachial index(ABI) and clinical adverse events.Results:There was no significant difference between angioplasty group and bypass group(P0.05).One month after operation,the hemodynamics of dorsalis pedis artery and nerve conduction velocity of lower limbs in the two groups were better than those before operation,the difference was statistically significant(P0.05),but there was no significant difference between the two groups(P0.05).The VAS score of the two groups was significantly lower than that of the preoperative group(P0.05),but there was no significant difference between the two groups(P0.05).The ABI of the two groups was significantly improved after operation,the difference was statistically significant(P0.05),but there was no significant difference between the groups at each time point(P0.05).There was no significant difference in LLL,patency rate and restenosis rate between the two groups(P0.05).There was statistical difference in the incidence of complications between the two groups(P0.05).During the follow-up period,no serious adverse events such as death or amputation occurred in both groups.Conclusion:Endovascular angioplasty and lower extremity artery bypass grafting have the same clinical effect in the treatment of elderly patients with lower extremity arteriosclerosis obliterans,which are safe and feasible.     

两种手术方式治疗膝下动脉闭塞性病变的临床疗效对比

目的探讨腔内血管成形术与下肢动脉旁路移植术治疗膝下动脉闭塞性病变的临床疗效。方法选取膝下动脉闭塞性病变患者343例作为研究对象,其中142例行下肢动脉旁路移植术(旁路移植组),201例行腔内血管成形术(血管成形组)。采用1∶1倾向性评分,以血管成形组为基准组进行匹配,共67例匹配成功。分析2组肢体挽救率、靶血管一期通畅率、踝肱指数(ABI)、Rutherford分级评分及并发症发生情况。结果2组肢体挽救率、靶血管一期通畅率比较,差异均无统计学意义(P>0.05)。2组术前ABI、Rutherford分级评分比较,差异无统计学意义(P>0.05);但重复测量结果显示,以时间因素为作用主效应差异有统计学意义(P<0.05);2组术后7 d、6个月ABI均高于术前(P<0.05),但同一时间点组间比较差异无统计学意义(P>0.05);2组术后7 d、6个月Rutherford分级评分均低于术前(P<0.05),但同一时间点组间比较差异无统计学意义(P>0.05)。血管成形组并发症发生率明显低于旁路移植组(P<0.05)。结论腔内血管成形术与下肢动脉旁路移植术治疗膝下动脉闭塞性病变,患者的肢体挽救率、靶血管一期通畅率相当,但腔内血管成形术并发症相对较少。     

Microalbuminuria is no risk factor for restenosis following percutaneous transluminal coronary angioplasty

Summary Microalbuminuria is known to be associated with an increased risk for cardiovascular disease. It is detectable in acute myocardial infarction and could therefore also be a risk factor for reocclusion after percutaneous transluminal coronary angioplasty (PTCA). In our study follow-up coronary angiography was performed in 50 consecutive patients with a mean age of 56 years (38–70) on average 14 months after successful PTCA. Restenosis was defined as a decrease in diameter of 25% or more of the original result and one of at least 50% in vessel diameter. In the restenosis group there were 23 patients, and 27 showed no restenosis. The family history and anamnestic risk profile, results of the initially performed coronary angiography, and laboratory risk factors were comparable in the two groups. Median microalbumin was 11.2 mg/g creatinine in those with restenosis and 9.8 mg/g creatinine in those without. Using a cutoff of 10.0 mg/g creatinine, 12 of 23 patients with restenosis (52%) and 10 of 27 patients without (37%) were positive for microalbuminuria (NS). The incidence of microalbuminuria was higher in both groups compared to historical controls. Thus, in the restenosis group the incidence of microalbuminuria tended to be higher than in the nonrestenosis group, but since this difference did not reach statistical significance, it cannot be used to predict the risk of reocclusion after PTCA.Abbreviations PTCA percutaneous transluminal coronary angioplasty - MA microalbuminuria - R restenosis group - NR group without restensosis     

低分子量肝素抑制血管成形术后平滑肌细胞增生及再狭窄形成

观察血管成形术后平滑肌细胞增生及再狭窄形成过程，探讨低分子量肝素的抑制作用。     

Intravascular stents to prevent occlusion and restenosis after transluminal angioplasty

Occlusion and restenosis are the most common reasons that transluminal balloon angioplasty may fail to provide long-term benefit. An intravascular mechanical support was therefore developed with the aim of preventing restenosis and sudden closure of diseased arteries after angioplasty. The endoprosthesis consists of a self-expandable stainless-steel mesh that can be implanted nonsurgically in the coronary or peripheral arteries. Experiments in animals showed complete intimal coverage within weeks and no late thrombosis during a follow-up period of up to one year. We performed 10 implantations in 6 patients for iliac or femoral arterial disease; 24 coronary-artery stents were implanted in 19 patients who presented with coronary-artery restenoses (n = 17) or abrupt closure (n = 4) after transluminal angioplasty or deterioration of coronary-bypass grafts (n = 3). We observed three complications in the group with coronary disease. One thrombotic occlusion of a stent resulted in asymptomatic closure, a second acute thrombosis was managed successfully with thrombolysis, and one patient died after bypass surgery for a suspected but unfound occlusion. Follow-up in the patients has continued for nine months without evidence of any further restenoses within the stented segments. Our preliminary experience suggests that this vascular endoprosthesis may offer a useful way to prevent occlusion and restenosis after transluminal angioplasty. Long-term follow-up will be required to validate the early success of this procedure.     

普罗布可抗兔动脉成形术后再狭窄与调节血管重塑的关系

目的:研究普罗布可抗动脉成形术后再狭窄与血管重塑的关系。方法:用3.5F球囊导管构建兔动脉粥样硬化动脉成形术后再狭窄模型, 动脉成形术后2周, 观察普罗布可抗动脉成形术后再狭窄作用;组织形态学观察及计算机图像分析, 了解普罗布可对病理性血管重塑的影响;血脂含量测定。结果:普罗布可抗再狭窄作用显著, 能明显增加血管内外径及管腔面积, 减少新生内膜的形成;能调节血管重塑, 增加动脉成形术后内弹力层包围的面积[IEL, ( 3.50±0.20) mm² υs (1.59±0.23) mm², P<0.01]、外弹力层包围的面积[EEL, (4.61±0.29) mm²υs (2.56±0.28) mm², P<0.01];能调节血脂水平, 降低血清总胆固醇及甘油三酯含量。结论:普罗布可通过调节动脉成形术后血管病理性重塑达到抗再狭窄作用。     

Percutaneous transluminal coronary angioplasty without thrombolytic therapy in acute myocardial infarction

Percutaneous transluminal coronary angioplasty (PTCA) in acute myocardial infarction (AMI) was performed in 42 patients (37 males, 5 females, average age 53 years). Recanalization of the stenosed or occluded infarction-related coronary artery was achieved within the first 14 to 50 min from the start of catheterization in 95% of cases. Three patients were transferred for emergency coronary bypass graft surgery (CABG) because of major multiple coronary lesions, immediately after angiographically successful PTCA. One of the patients died in cardiogenic shock. Four patients died between days 5 to 15 of hospitalization. Repeat coronary angiography was done in 27 of the 37 survivors at a mean interval of 2.5 months after AMI. Total reocclusion was found in 6 patients. The recanalized coronary artery had prevented its patency in 78% of the cases; restenosis was found in 5 patients, and was successfully dealt with renewed angioplasty in 3 patients. While the ejection fraction (EF) had remained largely unchanged, there was some improving tendency of left ventricular segmental kinetics, particularly in case of anterior wall infarction. PTCA without thrombolytic therapy seems to provide an effective and relatively prompt recanalizing procedure in the complex management of AMI.     

Percutaneous transluminal coronary angioplasty of focal coronary lesions after cardiac transplantation

Summary Transplant coronary artery disease is the greatest impediment to long-term survival beyond the first year after cardiac transplantation. Transplant coronary artery disease shows a heterogeneous angiographic appearance, but focal stenoses can occur alone or at least predominate. Based on an angiographic indication 35 critical focal lesions causing narrowing by 75% or more were treated by PTCA during 23 procedures in seven patients 18–84 months after cardiac transplantation. Three patients each underwent only one procedure and four underwent repeated procedures [2, 3, 4 and 11, respectively]. Primary success was achieved without any complication in 35 of 35 lesions (100%). The mean degree of stenosis was reduced from 86±9% to 28±17% (P<0.001). The rate of restenosis was 18/29 (62%) at a mean of 4 months after angioplasty. Four patients are alive and free of adverse effects (symptoms, myocardial infarction, repeated percutaneous transluminal coronary angioplasty, retransplantation) 16±10 months after their last angioplasty. One patient underwent a successful second heart transplantation 26 months after the first angioplasty. Two patients died, 1 and 31 months after the last angioplasty. In conclusion, percutaneous transluminal coronary angioplasty can be performed safely with an excellent primary success rate in critical focal transplant coronary artery disease. The rate of restenosis is higher than in native coronary artery disease. Long-term follow-up depends on the individually variable accelerated nature of graft atherosclerosis.Abbreviations PTCA percutaneous transluminal coronary angioplasty - TxCAD transplant coronary artery disease - HTX heart transplantation - LAD left anterior decending artery - CFX circumflex artery - RCA right coronary artery     

Improved global and regional left ventricular function after angioplasty for chronic coronary occlusion

Percutaneous transluminal coronary angioplasty can be performed safely and effectively in patients with chronic total coronary occlusion. To investigate the effect on left ventricular function, global and regional left ventricular ejection fraction were analyzed by contrast angiography in 49 patients before and 10±6 weeks after successful recanalization. Coronary angiography at follow-up showed reocclusion in 12 patients (24%). In 37 patients with patent arteries global ejection fraction increased from 55.8±7.1% at baseline to 62.5 ± 11.3% at follow-up (P < 0.001), and regional wall motion assessed by the centerline method improved from –1.7 + 1.0 to – 0.6 ± 1.5 standard deviations/chord (P<0.001). In contrast, in patients with reocclusion neither global ejection fraction nor regional wall motion were significantly different at follow-up compared with baseline. Changes in global or regional left ventricular function after coronary recanalization were unrelated to other parameters such as severity of angina, duration of occlusion, history of myocardial infarction, presence or absence of visible collaterals, or baseline left ventricular function. Thus in patients with primarily successful recanalization of chronically occluded coronary arteries persistent vessel patency is the major determinant of global and regional improvement of left ventricular function.Abbreviation PTCA percutaneous transluminal coronary angioplasty Correspondence to: W. Terres     

踝臂指数与急性冠脉综合征患者预后关系的Meta分析

目的:评价踝臂指数(ABI)与急性冠脉综合征(ACS)患者预后之间的关系。方法:从Cochrane Database of System Reviews、PUBMED、EMBASE等数据库中检索关于ABI与ACS的随机对照试验,同时筛检纳入研究的参考文献。对符合标准的研究通过I2统计量进行异质性检验,采用固定效应模型进行Meta分析,得到相对危险度(RR)值及其95%可信区间(CI)。结果:根据纳入和排除标准,共纳入4篇文献,总随访人数5320例,其中低ABI组与正常ABI组比较发生全因死亡事件的RR=2.39,95%CI(1.50～3.82),发生心源性死亡事件的RR=3.00,95%CI(1.98～4.54),再发ACS事件的RR=1.61,95%CI(1.26～2.05),发生卒中事件的RR=3.88,95%CI(1.85～8.10)。结论:在已发生ACS患者中,低ABI者更容易发生心脑血管恶性事件。     

Biological performance of TiNi shape memory alloy vascular ring prostheses: a two year study

A method was developed for the noninvasive insertion of a vascular ring prostheses aimed at preserving arterial patency and preventing restenosis following angioplasty. Using a specially designed 7F catheter 22 nitinol (TiNi) wire prostheses (I.D. 5 mm; 0.25 mm thickness) were torsion reduced in diameter and inserted under fluoroscopy into both carotid (n = 2) and iliac-femoral arteries (n = 20) of dogs. Aspirin (650 mg BID) and Persantin (200 mg BID) were given for only 30 days postoperatively. Angiography of all rings at 1, 6, 12 months exhibited excellent biocompatibility and long term patency 91% (20/22) as reported in Trans ASAIO 32:30, 1986. Four rings inserted in the right and left common iliac arteries and femoral artery were followed for up to 2 years and exhibited 100% patency. Angiography demonstrated that the anchorage of the prostheses was stable and the lumen was uniformly covered by a thin neointimal layer of endothelial like cells. The prostheses were patent with no evidence of thrombosis or inflammation. In view of the problem of recurrent stenosis occurring during the healing period after balloon angioplasty (PTA or PTCA), this approach may lead to a new means of clinical intervention in atherosclerosis.     

Factors influencing acute high-grade restenosis in emergency percutaneous transluminal coronary angioplasty for acute myocardial infarction

We studied the factors which may induce acute high grade restenosis in emergency percutaneous transluminal coronary angioplasty (PTCA). PTCA was attempted in 50 patients with acute myocardial infarction, and the balloon catheter passed successfully across the occlusion site in 47 (94%) of the patients. These 47 patients were analyzed. "Acute restenosis" was defined as a lesion which was revascularized to less than 50% luminal reduction narrowed again to more than 75% luminal reduction 5 min after the balloon inflation. Univariate and multivariate analyses were used for determining factors which significantly influenced acute restenosis. The incidence of at least one restenosis episode was 45%. Multiple regression analysis selected 5 factors associated significantly with an increased rate of acute restenosis: 1) angiographic evidence of dissection, 2) lesion in the right coronary artery (RCA), 3) lack of or insufficient administration of thrombolytic agent preceding PTCA, 4) curved lesion and 5) relatively small balloon/artery diameter ratio. Acute restenosis correlated significantly with late reocclusion. This study indicates that it is important to administer a thrombolytic agent prior to emergency PTCA, and to use an adequately sized balloon to the artery when the acute restenosis occurs by using relatively smaller sized balloon. The present data also demonstrated that patients with RCA and a curved lesion have a relatively high risk of acute restenosis. This study indicates how patients with relatively high risk of acute restenosis may be identified.     

Technical achievement: transthoracic Doppler echocardiography can be used to detect LAD restenosis after coronary angioplasty.

We investigated the capability of transthoracic Doppler echocardiography (TTE) to detect and quantify the severity of restenosis in the left anterior descending coronary artery (LAD) after percutaneous transluminal coronary angioplasty (PTCA). We studied 10 consecutive patients assigned for quantitative coronary angiography (qCA) due to a recurrent angina pectoris after PTCA of the LAD. The LAD was visualized by TTE, and the presence of local turbulence and an increase in the blood flow velocity was regarded to indicate coronary stenosis. To assess the severity of the stenosis, the increase of blood flow velocity was measured. Angiography showed stenoses of various degrees (27-100%) in all patients. All stenoses were detectable using TTE. Moreover, the ratio of maximal blood flow velocity at the site of stenosis to the pre-stenotic blood flow velocity (M/P-ratio) correlated significantly with the reduction of the luminal diameter of LAD (r = 0.85, P < 0.003). A M/P-ratio higher than 3.0 predicted a diameter reduction of 50% or higher with sensitivity and specificity of 100% in patients with a subtotal stenosis (n = 9). Our results indicate that stenoses in the LAD could be found and the severity of the stenoses could be quantified reliably with TTE. This approach is totally non-invasive and less expensive than coronary angiography and can be used clinically in clarifying restenosis after coronary angioplasty.     

Intraoperative evaluation of revascularization effect on ischemic muscle hemodynamics using near-infrared diffuse optical spectroscopies

Arterial revascularization in patients with peripheral arterial disease (PAD) reestablishes large arterial blood supply to the ischemic muscles in lower extremities via bypass grafts or percutaneous transluminal angioplasty (PTA). Currently no gold standard is available for assessment of revascularization effects in lower extremity muscles. This study tests a novel near-infrared diffuse correlation spectroscopy flow-oximeter for monitoring of blood flow and oxygenation changes in medial gastrocnemius (calf) muscles during arterial revascularization. Twelve limbs with PAD undergoing revascularization were measured using a sterilized fiber-optic probe taped on top of the calf muscle. The optical measurement demonstrated sensitivity to dynamic physiological events, such as arterial clamping/releasing during bypass graft and balloon inflation/deflation during PTA. Significant elevations in calf muscle blood flow were observed after revascularization in patients with bypass graft (+48.1 ± 17.5%) and patients with PTA (+43.2 ± 11.0%), whereas acute post-revascularization effects in muscle oxygenation were not evident. The decoupling of flow and oxygenation after revascularization emphasizes the need for simultaneous measurement of both parameters. The acute elevations/improvements in calf muscle blood flow were associated with significant improvements in symptoms and functions. In total, the investigation corroborates potential of the optical methods for objectively assessing the success of arterial revascularization.     

Symptomatic peripheral arterial disease: the value of a validated questionnaire and a clinical decision rule

BACKGROUND: If a validated questionnaire, when applied to patients reporting with symptoms of intermittent claudication, could adequately discriminate between those with and without peripheral arterial disease, GPs could avoid the diagnostic measurement of the ankle brachial index. AIM: To investigate the Edinburgh Claudication Questionnaire (ECQ) in general practice and to develop a clinical decision rule based on risk factors to enable GPs to easily assess the likelihood of peripheral arterial disease. DESIGN OF STUDY: An observational study. SETTING: General practice in The Netherlands. METHOD: This observational study included patients of > or =55 years visiting their GP for symptoms suggestive of intermittent claudication or with one risk factor. The ECQ and the ankle brachial index were performed. The prevalence of peripheral arterial disease, defined as an ankle brachial index <0.9, was related to risk factors using logistic regression analyses, on which a clinical decision rule was developed and related to the presence of peripheral arterial disease. RESULTS: Of the 4790 included patients visiting their GP with symptoms suggestive of intermittent claudication, 4527 were eligible for analyses. The prevalence of peripheral arterial disease in this group was 48.3%. The sensitivity of the ECQ was only 56.2%. The prevalence of peripheral arterial disease in a clinical decision rule that included age, male sex, smoking, hypertension, hypercholesterolemia, and a positive ECQ, increased from 14% in the lowest to 76% in the highest category. CONCLUSION: This study indicates that the ECQ alone has an inadequate diagnostic value in detecting patients with peripheral arterial disease. The ankle brachial index should be performed to diagnose peripheral arterial disease in patients with complaints suggestive of intermittent claudication, although our clinical decision rule could help to differentiate between extremely high and lower prevalence of peripheral arterial disease.     

踝肱指数检测在住院糖尿病患者中的重复性研究

目的 探讨踝肱指数(ankle brachial index,ABI)检测在住院糖尿病患者中的重复性。方法 选取2016年6月~2017年4月在我院住院的无亲缘关系的糖尿病患者,检测双下肢动脉血压和肱动脉血压,计算踝肱指数,在1周内进行两次ABI测定。比较前后两次结果的一致性。结果 第二次检测左下肢ABI小于第一次左下肢ABI检测结果（P＜0.05）。第二次右下肢ABI小于第一次右下肢ABI检测结果,差异存在统计学意义（P＜0.05）。结论 ABI在糖尿病患者中的检测重复性有待提高, 需要定期进行培训。     

Thrombospondin 1 as possible key factor in the hemocompatibility of endocoronary prostheses

Intracoronary stenting has markedly improved the patency of native coronary arteries after percutaneous transluminal coronary angioplasty (PTCA). Advances in stent technology and design, including drug releasing stents, have contributed to reduce the long-term restenosis rate. However, stenosis caused by neointimal hyperplasia, vascular remodeling and thrombosis is still a major problem after endocoronary stent procedures. This study focuses on differential gene expression of circulating peripheral blood cells after 90 min exposure to stents to search for initially activated cellular pathways, which may foster restenosis. Fresh human whole blood (1 IU heparin/ml), taken from non-medicated healthy volunteers, was incubated under flow conditions in an in vitro closed-loop stent-testing model (modified Chandler-Loop). Differential gene expression compared to resting conditions and to the experimental controls was investigated by a DNA-microarray technique encoding for over 17,000 genes simultaneously. As expected, a large variety of genes showed differential gene expression. Interestingly, Thrombospondin 1 (TSP-1), which plays a key role in initial immune defense, was found to be the most markedly up-regulated gene. We propose TSP-1 expression as an early indicator for the activation of immune responses following intracoronary stenting. After clarifying the participation of TSP-1 in vivo, future studies will therefore focus on TSP-1 as a potential prognostic factor, which may also help to develop and control new surface materials with an improved biocompatibility.     

移植肾动脉狭窄10例

背景：移植肾动脉狭窄的外科治疗包括摘取栓塞或切除狭窄段后重新吻合血管,或者利用自身静脉进行肾动脉与髂动脉的搭桥手术,虽然手术技术逐渐改进,但仍有部分病例发生移植肾的丧失。 目的：分析移植肾动脉狭窄的病因、分类、诊治方案的选择及效果。 方法：对2002/2010 收治的10例移植肾动脉狭窄患者临床资料进行回顾性分析。其中男8例,女2例;年龄36.9(22~55)岁。发病时间移植后5 d~7年半,其中8例患者为移植后半年内发病。常规超声筛查,数字减影血管造影检查确诊。 结果与结论：除1例患者拒绝数字减影血管造影检查以及1例开放手术患者,最终有8例接受介入治疗,8例数字减影血管造影检测均确诊移植肾动脉狭窄,狭窄程度为60.3%(40%~80%)。4例经皮腔内血管成形,4例支架置入,其中7例均取得显著的效果,5例肌酐降至正常,2例肌酐降至发病前水平,所有患者移植后早期即尿量显著增加、血压降至正常。在之后的长期随访中,也未发现再次狭窄或者血栓形成等并发症。但其中1例经皮腔内血管成形术中出现动脉出血,最终导致移植肾切除。提示对于移植肾动脉狭窄患者,应结合发病时间、发病原因以及狭窄程度等因素综合分析,选择合适的治疗方案,以取得最佳的疗效,并将风险降到最小。