Algorithmic Salvage Techniques in Non-Maturing Radiocephalic Arteriovenous Fistulae with Their Long-Term Patency

2017 ◽  
Vol 18 (5) ◽  
pp. 443-449 ◽  
Author(s):  
Ali Kordzadeh ◽  
Yiannis P. Panayiotopolous

Introduction The aim of this study is to examine the role of five different operative salvage techniques with their long-term primary patency (PP) in an algorithmic manner in gaining primary functional maturation (FM) in radio cephalic arteriovenous fistulae (RCAVF) formation following their impairment. Methods A prospective consecutive data collection on 195 patients undergoing only autogenous RCAVF formation from July 2013 to December 2015 was conducted. Each non-maturing fistula was then exposed to a salvage technique by an algorithmic methodology and their FM and PP was prospectively recorded. Results Forty-two patients were exposed to five different salvages techniques, with a median age of 67 years (IQR, 27-90), cephalic vein diameter of 2 mm (IQR, 1.5-4 mm) and radial artery diameter of 1.8 mm (IQR, 1.2-2.1 mm), demonstrated 63.1% FM and cumulative primary patency of 15.2 months (95% CI, 12.5-17.9) over a 21-month follow-up period. Conclusions Operative salvage techniques play an important role in achieving assisted functional maturation and long-term patency in RCAVF as an alternative and/or in conjunction with other minimally invasive procedures. These procedures can maximize access outcome, minimize bridging procedures, decrease complications and optimize patient anatomical resources for longer access provisions in an era of aging population.

2017 ◽  
Vol 18 (5) ◽  
pp. 366-370 ◽  
Author(s):  
Elias Kfoury ◽  
Christopher J. Demaree ◽  
Mun J. Poi ◽  
Jesus M. Matos ◽  
Carlos F. Bechara ◽  
...  

Introduction Children requiring long-term hemodialysis often face significant challenges due to their young age and small-vessel caliber for arteriovenous (AV) access creation. In this study, we report our experience of staged basilic vein transposition (BVT) in pediatric patients. Methods All patients undergoing staged BVT at a tertiary care pediatric hospital from 2003 to 2015 were reviewed. Indications for staged BVT included inadequate cephalic conduit or failed AV fistula using cephalic vein. Pertinent clinical variables were analyzed to determine treatment outcomes. Results Forty-two children (24 males, 57%) underwent 46 staged BVT during the study period. Median age was 12.8 ± 4.8 years (range 3-18). The mean weight was 47 ± 5.1 kg (range, 13-126 kg), with four children (10%) weighing ≤20 kg. Mean operative times for initial brachiobasilic AV fistula and staged BVT were 39 ± 12 minutes and 66 ± 17 minutes, respectively. Mean follow-up period was 5.4 ± 1.8 years. Functional maturation was achieved in 93% of BVTs. Early fistula thrombosis within 30 days following BVT occurred in four patients (10%). Late BVT thrombosis occurred in 13 patients (31%). Primary patency rates at 2 years and 4 years were 78% and 72%, respectively. Secondary patency rates at 2 years and 4 years were 86% and 82%, respectively. Conclusions Staged BVT is a durable and reliable autologous hemodialysis access in children who do not have adequate cephalic venous conduit.


2019 ◽  
Vol 7 (1) ◽  
pp. 240
Author(s):  
Manzoor Ahmad Dar ◽  
Muzzain Iqbal ◽  
Abdul Rouf Khawaja ◽  
Mohammad Saleem Wani ◽  
Arif Hamid Bhat ◽  
...  

Background: Urological disorders like stone disease, pyonephrosis secondary to obstruction and trauma are common during pregnancy with global incidence of 1 in 250 to 1 in 3000. These diseases can complicate any pregnancy and timely diagnosis and management is of utmost importance for safety of the mother and fetus. Managing these cases entails morbidity and minimally invasive procedures avoiding anesthesia have definite advantage.Methods: It was an observational study. Pregnant patients with nephrolithiasis, pyonephrosis, complicated post-traumatic ureteropelvic junction (PUJ) obstruction (PUJO) and trauma were included in the study.Results: Out of total 84 cases, 45 required intervention. Percutaneous nephrostomy (PCN) for pyonephrosis secondary to PUJO and obstructed PUJ calculus was done in 11 and 14 cases respectively. Bilateral PCN for bilateral nephrolithiasis was done in 7 cases. Silicon double-J stenting for ureteric calculus was done in 13 cases. One case of spontaneous fornicial rupture of kidney without stone disease was managed conservatively as were 4 cases of trauma with concomitant renal injury, 18 cases of non-obstructive renal stones and 16 cases of pyelonephritis. Seven patients lost follow-up. One case each of pyonephrosis and polytrauma had fetal death at term unrelated to urological cause. In rest 75 patients, primary pathology was tackled after 6-8 weeks of delivery.Conclusions: Urological diseases during pregnancy are not an uncommon entity and can pose risk to both mother and fetus. With good clinical vigil, use of minimally invasive procedures, close monitoring and follow up, these patients can be safely managed without any adverse events to the fetus and mother.


2018 ◽  
Vol 5 (4) ◽  
pp. 1475
Author(s):  
Mithun Panchal

Background: This study describes the experience of arteriovenous fistula (AVF) creation as vascular access for haemodialysis.Methods: This study has been carried out in our hospital from January 2004 to December 2016. A total of 154 AVFs were created in 100 patients. Maximum follow-up was 2 years, and minimum was 6 months.Results: In this study of 100 cases of AVFs, primary patency rates by Kaplan Meier analysis showed 78.81% patency of fistulas at the end of 1 year and patency dropped to 14.81% at the end of 5 years. The primary failure rate was 21.2%. Basilic vein was used in 26.35% cases, cephalic vein in 63.5%, and antecubital vein in 9.75% cases. On table, bruit was present in 134 (90.9%) and thrill in 126 (89.3%) cases. During dialysis, flow rate >250ml/min was obtained in 40(29.9%) cases. In complications, 2 (0.4%) patients developed distal oedema.Conclusions: Presence of on table thrill and bruit are indicators of successful AVF. If vein diameter is <2mm, chances of AVF failure are high. Flow rates in patients with vein diam. More than 2mm was significantly higher as compared with patients with vein diam. Less than 2mm (P< 0.001). Flow rates are higher in non-diabetic patients as compared to diabetic patients (P <0.001). Average blood urea and serum creatinine values are significantly lesser in patients undergoing dialysis through successful fistulas as compared to patients with failed fistulas. Correspondingly, incidence of deaths is significantly lesser in patients with successful fistulas. During proximal side-to-side fistula between antecubital/basilic vein and brachial artery, dilating of the first valve toward wrist helps to develop distal veins in the forearm by retrograde flow. This technique avoids requirement of superficialization of basilic vein in the arm.


2013 ◽  
Vol 5 (2) ◽  
pp. 107
Author(s):  
Amr Al-Najar ◽  
Sascha Kaufmann ◽  
Soenke Boy ◽  
Carsten Maik Naumann ◽  
Peter-Klaus Jünemann ◽  
...  

Objective: Our objective was to establish the feasibility of combining2 minimally invasive procedures in patients with failed primarytreatment (male sling) in post-prostatectomy incontinence(PPI) patients.Methods: From January 2007 to July 2008, 40 men with PPI wereimplanted with a suburethral tape (2 patients with Seratim, 3 withI-Stop and 35 with Advance). The median preoperative pad countwas 4 (range 2-10). Prior to sling placement, 6 patients had undergoneProACT implantation. Of these, 4 patients required explantationdue to balloon migration and 2 patients had their balloonskept in situ, with the balloons deflated.Results: Twenty-five patients were socially continent at this time.Fifteen patients (37.5%) did not improve or their improvementwas not significant. These patients had a preoperative pad countbetween 7 and 10. Two of these patients had prostate adjustablecontinence therapy (ProACT) systems still in place. By graduallyfilling the balloons to 3 mL, both of these patients achieved completecontinence, which was maintained at a mean follow-up of8.5 months. Three patients with prior pelvic irradiation receivedan artificial urinary sphincter and achieved continence at meanfollow-up of 8.3 months. The remaining 10 patients received aProACT system in addition to the already implanted sling. Afterappropriate healing and filling of the balloons (average balloonvolume 5 mL), all 10 patients reached complete continence; theywere pad-free at a mean follow-up of 6 months (range 3-9).Conclusions: The combination of ProACT and a suburethral tapewas demonstrated to be a possible treatment option in recurrentor persistent PPI.Objectif : Notre objectif était d’établir la faisabilité d’une associationde 2 interventions minimalement invasives chez des patients ayantsubi un échec thérapeutique primaire (bandelettes sous-urétrales)chez des patients atteints d’incontinence post- prostatectomie.Méthodologie : De janvier 2007 à juillet 2008, on a placé une bandelettesous-urétrale chez 40 hommes atteints d’incontinence postprostatectomie(2 patients ont reçu le dispositif de marque Seratim,3 patients, de marque I-Stop et 35, de marque Advance). Le nombremédian de protections absorbantes avant l’opération était de 4 (2 à10). Avant la mise en place de la bandelette, 6 patients avaient subiune implantation d’un système ProACT. De ce nombre, 4 patientsont dû se faire retirer les ballonnets en raison de leur déplacement;chez 2 patients, les ballonnets sont restés en place mais se sontdégonflés.Résultats : Vingt-cinq patients présentaient une continence socialeà ce moment. Quinze patients (37,5 %) n’ont présenté aucuneamélioration, ou une amélioration non significative. Ces patientsutilisaient de 7 à 10 protections absorbantes avant l’opération. Deuxde ces patients étaient toujours porteurs d’un système ProACT. Enremplissant graduellement les ballonnets de 3 mL, ces deux patientsont atteint une continence totale, maintenue après un suivi moyende 8,5 mois. Trois patients ayant reçu antérieurement un traitementpelvien par rayonnement ont reçu un sphincter urinaire artificielet ont atteint la continence après un suivi moyen de 8,3 mois.Chez les 10 derniers patients, on a implanté un système ProACTen plus de la bandelette déjà en place. Après un temps suffisant deguérison et le remplissage des ballonnets (volume moyen : 5 mL),les 10 patients ont atteint une continence complète. Ils n’avaientplus besoin de protection absorbante après un suivi moyen de6 mois (entre 3 et 9 mois).Conclusions : L’association d’un système ProACT et d’une bandelettesous-urétrale s’est révélée une option thérapeutique possibleen présence d’incontinence post-prostatectomie récurrenteou persistante.


2014 ◽  
Vol 47 (03) ◽  
pp. 362-369 ◽  
Author(s):  
Parag Sahasrabudhe ◽  
Tushar Dighe ◽  
Nikhil Panse ◽  
Shraddha Deshpande ◽  
Amit jadhav ◽  
...  

ABSTRACT Background: This study describes our experience of arteriovenous fistula (AVF) creation as vascular access for haemodialysis. Materials and Methods: This study has been carried out in our hospital from January 2004 to December 2012. A total of 505 AVFs were created in 443 patients. Maximum follow-up was 8 years, and minimum was 6 months. Observations and Results: In this study of 505 cases of AVFs, primary patency rates by Kaplan — Meier analysis showed 78.81% patency of fistulas at the end of 1 year and patency dropped to 14.81% at the end of 5 years. Our primary failure rate was 21.2%. Basilic vein was used in 26.35% cases, cephalic vein in 63.5%, and antecubital vein in 9.75% cases. On table, bruit was present in 459 (90.9%) and thrill in 451 (89.3%) cases. During dialysis, flow rate >250 ml/min was obtained in 150 (29.9%) cases. In complications, 2 (0.4%) patients developed distal oedema, 33 (6.5%) developed steal phenomenon. Conclusions: Presence of on table thrill and bruit are indicators of successful AVF. If vein diameter is <2 mm, chances of AVF failure are high. Flow rates in patients with vein diam. >2 mm were significantly higher as compared with patients with vein diam. <2 mm (P < 0.001). Flow rates are higher in non-diabetic patients as compared to diabetic patients (P < 0.001). Average blood urea and serum creatinine values are significantly lesser in patients undergoing dialysis through successful fistulas as compared to patients with failed fistulas. Correspondingly, incidence of deaths is significantly lesser in patients with successful fistulas. During proximal side-to-side fistula between antecubital/basilic vein and brachial artery, dilating of the first valve toward wrist helps to develop distal veins in the forearm by retrograde flow. This technique avoids requirement of superficialization of basilic vein in the arm.


2003 ◽  
Vol 16 (03) ◽  
pp. 191-195 ◽  
Author(s):  
K. Hurter ◽  
P. Schawalder ◽  
H. G. Schmökel

SummaryA trend toward minimally invasive procedures in the treatment of fractures in human patients is apparent in recent publications. Percutaneous plating is one method of fracture fixation, conceived to minimise soft tissue damage and preserve soft tissue and bone vascularity. The use of fewer screws, in longer bridging plates, is also a relatively new technique in the stabilisation of comminuted diaphyseal fractures in human patients. A combination of these techniques was applied in two dogs with comminuted tibial fractures.The plates were passed subfascially and the screws inserted through skin incisions over the proximal and distal ends of the plate. Follow-up radiographs revealed fracture healing with callus formation after four or five weeks. Percutaneous plating seems to be a useful technique in small animals. Further studies on larger numbers of patients are needed to define the benefits and the limitations of this technique.


2013 ◽  
Author(s):  
Francesca Menegazzo ◽  
Melissa Rosa Rizzotto ◽  
Martina Bua ◽  
Luisa Pinello ◽  
Elisabetta Tono ◽  
...  

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