Early results of percutaneous renal artery angioplasty in patients with renovascular hypertension

The authors report early results of percutaneous transluminal angioplasty of renal arteries in 28 patients. This method of treatment of renovascular hypertension is applicable in certain cases, mostly in patients with fibromuscular hyperplasia and in arteriosclerotic renal artery disease. Early good and very good hypotensive results were obtained in 27 cases (96.4%).     

Coronary arterial rupture during percutaneous transluminal coronary angioplasty: a case report

A case who developed rupture in a diagonal branch of the left anterior descending coronary artery (LAD) during percutaneous transluminal coronary angioplasty (PTCA) is reported here. The present case was 80-year-old man with severe focal stenosis of the LAD at its junction with a diagonal branch. PTCA for the LAD lesion was successfully performed, but occlusion of the diagonal branch developed later. A subsequent ECG showed elevation of an ST segment in a VL, and PTCA for the diagonal branch was attempted. A 018 Hi-torque floppy guide wire was introduced into the occluded diagonal branch, and its dilatation was attempted using a 2 mm Simpson-Robert catheter. During a maximal pressure of 120 psi, a deformity was found at the distal end of the balloon. Post-PTCA angiograms showed rupture of the diagonal arterial branch, and mild to moderate pericardial effusion was observed by echocardiography. The patient experienced transient hypotension (60 mmHg at systolic), but his condition gradually stabilized after the administration of only a pressor medication. Neither pericardiocentesis nor emergency surgery was performed. The next day, follow-up angiograms showed diagonal branch occlusion at the proximal portion of the rupture site. His clinical course was satisfactory with spontaneous resolution of pericardial effusion and mild elevation of his cardiac enzymes (CPK = 243IU). In this case, it was concluded that the cause of coronary arterial rupture was the difference in diameters of the coronary artery (1 mm) and the balloon catheter (2 mm). This was the first rupture case experienced among 750 PTCA sites (0.13%).(ABSTRACT TRUNCATED AT 250 WORDS)     

肾动脉支架置入治疗动脉粥样硬化性肾动脉狭窄的疗效

目的评价肾动脉内支架置入治疗动脉粥样硬化性肾动脉狭窄的疗效。方法动脉粥样硬化性肾动脉狭窄51例,均成功施行肾动脉内支架置入术,定期门诊随访1年,测定血压、血生化,行计算机断层血管造影及肾动脉造影检查。结果支架置入后,高血压控制满意29%(15/51)、改善59%(30/51)、无效12%(6/51);12个月随访:高血压控制满意36%(18/51)、改善51%(26/51)、无效14%(7/51);复查肾动脉造影20例,未出现支架内再狭窄。术后1周血肌酐由术前(120±50)μmol/L降至(91±22)μmol/L,内生肌酐清除率从(56±16)ml/min升至(72±14)ml/min,外周静脉血肾素从(2.1±0.8)nmol/L降至(1.5±0.6)nmol/L,与术前相比差异均有统计学意义(P<0.05)。结论肾动脉内支架植入术是治疗动脉粥样硬化性肾动脉狭窄安全而有效的方法,对高血压临床疗效肯定,并具有一定的肾功能保护作用。     

Successful angioplasty of tripolar renal arteries in a single setting: a case report

Renal artery stenosis (RAS) is one of the important causes of correctable hypertension. There are various modes of therapy for RAS, including percutaneous transluminal renal angioplasty (PTRA) and surgery. PTRA has emerged as the treatment of choice in cases of renal artery stenosis. PTRA combined with stenting is associated with good immediate and long-term results. This case report describes successful angioplasty of bilateral multiple renal arteries in a single setting with good immediate and follow-up results.     

Successful double bypass in a patient with severe hemophilia A: a case report

Life expectancy in the hemophilia people is similar to the non–haemophilics and age-related cardiovascular disorders to become more prevalent, but cardiac surgery is considered a very high risk for these patients. In this article we report the successful cardiac double bypass internal mammary artery—coronary artery in a patient with severe hemophilia A. (FVIII<1%; missense mutation: exon 16, c.5508 G>A (domain A3), p.Trp1817Stop). Continuous infusion of rFVIII B-domain deleted was used to control haemostasis during surgery and in post-operative period. There was no bleeding complications and the patient did not need to receive transfusion of red blood cells or platelets.     

Successful multi-vessel percutaneous coronary intervention with bivalirudin in a patient with severe hemophilia A: a case report and review of literature

We describe a 64-year-old male with severe hemophilia A (factor VIII-dependent), acute myocardial infarction (MI) and congestive heart failure (CHF) who underwent successful multi-vessel percutaneous coronary intervention (PCI). The patient was administered factor VIII transfusion to maintain activity levels between 60-80%. Anticoagulation during the PCI procedure was maintained with the direct thrombin inhibitor, bivalirudin. There were no procedural complications and the patient was discharged home the following day. These results suggest that bivalirudin may be used effectively in patients at very high risk of bleeding with enhanced procedural safety.     

Successful percutaneous balloon mitral valvuloplasty in a patient with left atrial thrombus--a case report

Percutaneous balloon mitral valvuloplasty (PBMV) described by Inoue et al, is a safe FDA (Food and Drug Administration) approved procedure in patients with severe mitral stenosis. One of the contraindications of the procedure is presence of a left atrial thrombus; however, it has been reported that intense warfarin therapy may led to dissolution of the thrombus. The authors report a patient who was referred for PBMV and was found to have a left atrial thrombus. After intense warfarin therapy, successful PBMV was undertaken without complications.     

Multivessel spontaneous coronary artery dissection in a patient with severe systolic hypertension: a possible association. A case report.

Spontaneous coronary artery dissection (SCAD) is an uncommon cause of myocardial ischemia and infarction. Hypertension has not been associated with SCAD. The authors report multivessel SCAD in an elderly woman with severe systolic hypertension. They postulate that hypertension of this degree may play a pathophysiologic role in the causation of SCAD.     

Successful percutaneous angioplasty and stenting of the radial artery in a patient with chronic upper extremity ischemia and digital gangrene.

PURPOSE: To report percutaneous treatment of a chronic radial artery occlusion in a multimorbid patient with ischemic tissue loss. CASE REPORT: A 62-year-old man with multiple comorbidities, including renal failure and severe coronary artery disease, presented with painful, ulcerated lesions of his right hand. He has severe peripheral vascular disease, with a history of 4 digital amputations of the left hand, a right above-knee amputation, and a left femoral to peroneal artery bypass. Arteriography demonstrated chronic occlusion of the radial and ulnar arteries, with a patent interosseous and collateral flow to the distal radial artery filling the palmar arch. Angioplasty and stenting of the radial artery was performed, relieving the patient's symptoms and allowing the lesions to heal. CONCLUSION: Percutaneous intervention can treat severe upper extremity ischemia with gangrene in patients with severe chronic ischemia and multiple comorbidities.     

Transradial renal artery angioplasty and stenting in a patient with Leriche syndrome

Percutaneous interventional procedures in the renal arteries are usually performed employing a femoral or brachial vascular access. In contrast, the transradial approach has been established for coronary angiography and angioplasty. We encountered a patient with Leriche syndrome who had renovascular hypertension ascribed to a severe left renal artery stenosis. To stabilize his blood pressure, we made an attempt to relieve the renal artery stenosis with Leriche syndrome by transradial renal artery angioplasty and stenting, using devices for coronary intervention. The procedure was successful without complications or residual stenosis. His hypertension improved with less antihypertensive medications. This case suggests that the radial approach might become an alternative entry site for renal artery interventions.     

Successful local fibrinolytic treatment and balloon angioplasty in superior mesenteric arterial embolism: a case report and literature review

We present the case of a 72-year-old man with atrial fibrillation who developed an embolic occlusion of the superior mesenteric artery. He was successfully treated with local fibrinolysis using streptokinase associated with angioplasty. Such local treatments without the need of surgery are very rarely reported in the literature because of the great difficulty in selecting patients without intestinal necrosis, but represent an important option in the algorithm for the management of acute mesenteric ischemia. The patient was in good condition without recurrent embolism during the six months follow-up.     

Use of gadolinium-based angiography for renal artery stenting in a patient with renal insufficiency: A case report

The number of percutaneous diagnostic and interventional procedures performed continues to increase. Despite the use of various methods to reduce the incidence of contrast-induced nephropathy, the development of renal failure remains a significant problem with iodinated-based contrast agents. Patients with a baseline renal insufficiency are at considerably higher risk of permanent renal deterioration following exposure to iodinated contrast. The authors report a successful case of percutaneous stenting of the renal artery using a gadolinium-based contrast agent in a high-risk patient with renal insufficiency.     

Electrical and mechanical alternans during percutaneous transluminal coronary angioplasty in a patient with acute myocardial infarction--a case report

The authors report a rare type of cardiac alternans during percutaneous transluminal coronary angioplasty (PTCA) in a patient with acute myocardial infarction. Not only ST segment but also QRS alternans were observed on electrocardiogram and were accompanied by mechanical alternans. The mechanism of these unusual findings is briefly discussed.     

Spontaneous rupture of a renal artery pseudoaneurysm in a hemodialysis patient: A case report

Rationale:Renal artery pseudoaneurysm is a rare vascular lesion usually caused by trauma or percutaneous urological procedures. Spontaneous rupture of pseudoaneurysms without predisposing events, especially in hemodialysis patients, has rarely been reported.Patient concerns:A 25-year-old man receiving maintenance hemodialysis visited the emergency room because of sudden severe right flank pain. He had no history of trauma or urological procedures except for a left renal biopsy to diagnose Alport syndrome 10 years prior.Diagnosis:Contrast-enhanced computed tomography revealed a right perirenal hematoma with pseudoaneurysms.Interventions:On renal angiography, multiple pseudoaneurysms were observed in the right renal artery branches and embolization was performed.Outcomes:Post-angiography showed no pseudoaneurysms. His abdominal pain improved, and he was discharged 2 weeks after embolization.Lessons:When maintenance dialysis patients complain of severe abdominal pain, spontaneous rupture of a renal pseudoaneurysm should be considered as a differential diagnosis, even if the patient has no history of trauma or previous urological procedures.