OBJECTIVETo explore the surgical approaches for management of postoperative stenosis of ateriovenous fistula (AVF) in patients with end-stage renal disease (ESRD).

METHODSOf the 415 patients with ESRD receiving radial-cephalic end-to-side anastomosis during the last 3 years, 29 developed postoperative AVF stenosis (of type Ia in 5 cases, type Ib in 17 cases, type II in 3 cases, and type II in 2 cases). A proximal anastomosis was created between the radical artery and cephalic vein for type Ia stenosis. In the 17 cases with type I b stenosis, 5 were managed by interception of suitable segments from the accessory cephalic veins for cephalic vein reconstructions, and 12 by transposition of the accessory cephalic veins. Of 3 cases with type II stenosis, 1 was managed by interception of the accessory cephalic vein for interposing into the cephalic vein, 1 by interception of the distal great saphenous vein for interposing into the cephalic vein, and 1 by transposition of the forearm basilic vein for end-to-side anastomosis with the radial artery. The 2 cases with type III were managed by end-to-side anastomosis between the forearm basilic vein and the radial artery or by conversion to AVF repair on the contralateral forearm.

RESULTSTwenty-eight of the 28 patients finally received surgical repair of AVF stenosis and the surgeries were completed successfully. Thrombosis of the outflow vein occurred 12 h after the repair in 1 case to require emergency embolectomy and anastomosis; restenosis occurred in 2 cases at 9 months postoperatively, for which progressive percutaneous transluminal angioplasty (PTA) was performed. The rate of restenosis was 7.1% (2/28). All the 28 patients undergoing AVF stenosis repair had successful HD for 12 months after the operation.

CONCLUSIONReconstructing the arteriovenous anastomosis, replacing the stenosis segment with an accessory cephalic vein or great saphenous vein graft, or altering the outflow with the forearm basilic vein can be surgical options for repairing postoperative AVF stenosis.

Aged ; Anastomosis, Surgical ; Arteriovenous Fistula ; surgery ; Arteriovenous Shunt, Surgical ; Brachiocephalic Veins ; surgery ; Constriction, Pathologic ; surgery ; Diabetic Nephropathies ; surgery ; Female ; Humans ; Male ; Middle Aged ; Radial Artery ; surgery

OBJECTIVE: To evaluate the efficacy of ultrasound or fluoroscopic-guided percutaneous transluminal angioplasty (PTA) combined with thrombolysis for the treatment of acutely thrombosed arteriovenous fistula (AVF) or grafts (AVG). METHODS: One hundred and ninety-two hemodialysed patients, in whom the thrombosed arterio-venous AVF or AVG developed less than 72 h and there were no contraindications for thrombolysis and PTA, underwent PTA combined with thrombolysis therapy in Sir Run Run Shaw Hospital of Zhejiang University from October 2014 to October 2017. Under ultrasound and/or fluoroscopic guidance, balloon catheter was introduced to thrombosis sites along a guide wire. Then the balloon was inflated and normal saline mixed with urokinase and heparin was injected for thrombolysis. After blood flow was restored, angioplasty was performed on vascular stenosed sites. RESULTS: A total of 274 endovascular interventional operations were performed for 192 patients. The procedure success rate was 98.2%, clinical success rate was 93.8%and complication rate was 1.46%. The post-intervention primary patency rates for AVF group were 87.4%, 76.7%and 63.9%at 3, 6 and 12 months, respectively; while the post-intervention secondary patency rates were 93.7%, 91.6%and 83.0%, respectively. The post-intervention primary patency rates for AVG group were 60.7%, 51.5%and 43.1%at 3, 6 and 12 months, while the post-intervention secondary patency rates were 82.7%, 77.1%and 70.8%, respectively. CONCLUSIONS PTA combined with thrombolysis is an effective and safe therapeutic option for AVF and AVG thrombosis, which would prolong hemodialysis access and save vascular resources for hemodialyzed patients.
Angioplasty ; Arteriovenous Fistula ; Arteriovenous Shunt, Surgical ; Humans ; Renal Dialysis ; Retrospective Studies ; Thrombolytic Therapy ; Thrombosis ; surgery ; Treatment Outcome ; Ultrasonography

Adult ; Arteriovenous Fistula ; diagnosis ; surgery ; Brain Abscess ; diagnosis ; surgery ; Humans ; Male ; Pulmonary Artery ; abnormalities ; surgery ; Pulmonary Veins ; abnormalities ; surgery

BACKGROUND: Owing to the fact that the average life span has increased and the progress in medical science has been made, the number of patients with chronic renal failure (CRF) who have to take hemodialysis (HD) has been going up gradually. Accordingly, it is considered to be as a significant issue to obtain blood vessels which can be used repetitively and supply enough blood flows. Therefore, there have been various kinds of study on an inosculation rate andfactors influencing it following an arteriovenous fistula (AV fistula) and lots of studies are ongoing for the purpose of escalating the inosculation rate. The authors analyzed the effects of short-term result, age, sex, diabetes and hypertension on arteriovenous inosculations in 134 anatomical snuffbox operated subjects among the patients who have taken an AV fistula at this center. MATERIAL AND METHOD: Based on 134 patients who underwent an AV fistula at the department of thoracic surgery of this center from July, 2000 to May, 2004, the difference in arteriovenous inosculation rate was compared and analyzed depending on age (discriminated by 65-year-old), sex and the condition of the presence or absence of diabetes and hypertension. Correlation analyses were conducted for each parameter and statistical tests were performed by using SPSS for windows Release 11.0.1, which were determined to be statistically significant if p value was below 0.05. RESULT: The total number of operations was 169 including 35 of re-operations. The male/female rate was 70:64 (52%:48%). The average age was 56.3+/-12.26 years and there were 33 (24%) old aged patients above 65-year-old; there were 103 (71%) patients with hypertension and 90 (67%) patients with diabetes. Overall arteriovenous inosculation rate was 93+/-2.4%, 91+/-2.7%, 89+/-3.0% at 6, 12, 24 months, respectively. The arteriovenous inosculation rate of above 65-year-old patient group was 85+/-4.8%, 80+/-5.8%, 80+/-5.8% and below 64-year-old patient group's was 85+/-4.8%, 80+/-5.8%, 80+/-5.8% at given time points, respectively, which showed higher inosculation rate in below 64-year-old patient group with a statistical significance (p=0.0034). However, no statistical significance was found between the patients with hypertension and diabetes and the patients with no complication. In addition, there was no statistical significance in inosculation rate between male and female. CONCLUSION: The arteriovenous inosculation ratewas higher in the treated patient below 64-year-old than in the treated patient above 65-year-old. Thus it is advantageous for increase in long-term inosculation rate to obtain hemodialysis routes at an early age. The conditions of sex and the presence or absence of diabetes and hypertension do not make statistically significant effect on the arteriovenous inosculation rate.
Aged ; Arteriovenous Fistula* ; Blood Vessels ; Female ; Fistula ; Humans ; Hypertension ; Kidney Failure, Chronic* ; Male ; Middle Aged ; Renal Dialysis ; Thoracic Surgery

BACKGROUND: Deairing from the heart after open heart surgery(cardiopulmonary bypass) is a very important procedure. Artificial arteriovenous fistula was used to remove air, and the efficiency was evaluated by transesophageal echocardiography. MATERIAL AND METHOD: Just before termination of cardiopulmonary bypass, a standard pressure transducer line is connected between the stopcocks of the connections in the arterial and venous circuits, creating a small controlled arteriovenous fistula between the arterial and venous cannulas. The degree of intracardiac air and air removal time were evaluated either by transesophageal echocardiography or direct vision of pressure transducer line. RESULT: By simple procedure, cardiopulmonary time was shortened and air clearing can be confirmed using echocardiography in a few minutes. CONCLUSION: Creation of arteriovenous fistula using small connecting line between aortic and venous cannula is a very simple and effective method of deairing and preventing of air embolism after open heart surgery.
Arteriovenous Fistula ; Cardiopulmonary Bypass ; Catheters ; Echocardiography ; Echocardiography, Transesophageal ; Embolism ; Embolism, Air ; Fistula ; Heart* ; Thoracic Surgery* ; Transducers, Pressure

Adult ; Aneurysm, False ; etiology ; Arteriovenous Fistula ; etiology ; Biopsy ; adverse effects ; Humans ; Kidney ; surgery ; Male ; Postoperative Complications

Traumatic arteriovenous fistula between the axillary artery and vein may present a difficult problem in treatment. There are few reports demonstrating the endovascular repair of this challenge. Herein, we present such a case of endovascular repair of traumatic arteriovenous fistula between the axillary artery and vein with false aneurysm formation. The patient was discharged 11 days after successful operation. Oral clopidogrel and aspirin were administered for 18 months. At one year follow-up, the patient was in good condition and showed no evidence of neurological deficit in the left upper limb.
Adult ; Arteriovenous Fistula ; surgery ; Axillary Artery ; injuries ; surgery ; Axillary Vein ; injuries ; surgery ; Endovascular Procedures ; methods ; Humans ; Male

OBJECTIVETo enhance the clinical doctors' cognizance of atypical spinal dural arteriovenous fistulae (SDAVFs) associated with perimedullary anteriovenous fistulae (PMAVFs).

METHODSThe clinical imaging and surgical therapy of 3 patients with PMAVFs were analyzed retrospectively.

RESULTSThe clinical presentations of the 3 patients were not significantly different from those of typical SDAVFs. They were verified by repeated spinal angiography that the anterior spinal artery (ASA) is supplied to the drainage-vein. The 3 patients were treated surgically. First two operations were performed to eliminate the supply of ASA and dural branch, then the supply of the dural branch was amputated, and finally both the ASA and dural branch supplies were excised successfully. Clinical symptoms of the 3 patients were improved after treatment.

CONCLUSIONSIt is necessary to perform thorough spinal angiography in patients with SDAVFs to exclude another fistula. The key point in the treatment of such patients is successfully to terminate both the spinal feeder and dural branch feeder.

Adult ; Aged ; Arteriovenous Fistula ; physiopathology ; surgery ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Spinal Cord ; surgery ; Surgical Procedures, Operative

OBJECTIVETo report surgical experience in pseudoaneurysm (PA) repair of arteriovenous fistula (AVF) for renal hemodialysis.

METHODSTwenty patients undergoing PA repair of AVF for renal hemodialysis were treated in Central Hospital Conde S. Januario of Macao. Sixteen patients had PAs of AVF in upper extremities, 4 in lower extremities. All patients were treated with surgical therapy.

RESULTSAll operations were finished without death. One patient suffered from acute thrombosis, recovered without any complication through instant thrombectomy. One patient with postoperative incision bleeding recovered after low molecular weight heparin was ceased. And one AVF could not be mature six weeks later, was recovered after ligation of branch vein. And one patient died due to recurrent cerebral infarction.

CONCLUSIONSurgical repair is the best choice for PA of AVF for renal hemodialysis.

Adult ; Aged ; Aged, 80 and over ; Aneurysm, False ; complications ; surgery ; Arteriovenous Fistula ; complications ; Female ; Humans ; Male ; Middle Aged ; Renal Dialysis

Inferior mesenteric arteriovenous fistula is rare and may be congenital or acquired. Affected patients present with abdominal pain, mass, or manifestations of portal hypertension and bowel ischemia. Until now, inferior mesenteric arteriovenous fistula due to trauma has not been reported. Herein, we report a case of a 53-year-old woman who had inferior mesenteric arteriovenous fistula considered to have originated from remote blunt trauma that was successfully treated by surgical resection of only the arteriovenous fistula without colectomy. To our knowledge, this is the first case of traumatic inferior mesenteric arteriovenous fistula.
Arteriovenous Fistula/*diagnosis/pathology/surgery ; Colonoscopy ; Female ; Humans ; Mesenteric Artery, Inferior/radiography ; Middle Aged ; Tomography, X-Ray Computed ; Treatment Outcome