search

Active clinical trials for "Fistula"

Results 461-470 of 712

The Minimum Effective Concentration of Lidocaine for Ultrasound-guided Axillary Block for Arterio-venous...

Anesthesia

The arteriovenous fistula creation (AVF creation) surgery is essential among patients with end stage renal disease who require hemodialysis. The fistula usually locates at forearm, and is created by connecting artery and vein through surgery. Patients undergone hemodialysis through the fistula six weeks later if fistula becoming mature, which means patent vessel diameter and enough flow for hemodialysis. The primary failure rate of arteriovenous fistula creation is about 20% to 40% according to previous research data. Thrombosis is the most common cause of fistula failure, which require surgical intervention after arteriovenous fistula surgery. Anesthetic technique influences surgical outcome of arteriovenous fistula. General anesthesia, regional anesthesia, and local anesthesia are both wide-used methods. Regional anesthesia with nerve block remains the most popular method for arteriovenous fistula creation. The vessel dilation effect of regional anesthesia helps not only dilatation of artery and vein, but also the fistula itself, and promotes the successful functional dialysis. Various type of nerve block are used as anesthetic method for AVF creation surgery. People requiring hemodialysis usually have multiple underlying disease involving other major organ such as heart, lung, liver, and the endocrine system. They are more vulnerable to systemic intravenous anesthetic medication. The metabolic rate and pharmacodynamics of local anesthetic may also alter due to multiple systemic disease when compared with healthy adults. The optimal concentration of lidocaine for AVF creation when using axillary block has not yet been studied. This research is conducted for dosing response of different concentration of lidocaine when using axillary block for AVF creation surgery. We aim to investigate the optimal low effective concentration, the MEC90, which defined as 90% of patients can tolerate the operation at this concentration.

Unknown status11 enrollment criteria

The Outcome of Combined Partial Fistulectomy or Fistulotomy and Cutting Seton Procedure in High...

High Anal Fistula

The aim of this study is to assess the effectiveness and suitability of the tight (cutting) seton as a surgical treatment of high anal fistula combined with partial fistulotomy or fistulectomy in a prospective study.

Unknown status8 enrollment criteria

Trichloroacetic Acid for Endoscopic Tracho-esophageal Fistula Repair

Tracheo Esophageal Fistula

Today Endoscopic repair of recurrent Tracheesophageal fistula (TEF) is a safe procedure. Using Trichlosiacetic acid 50% (TCA) for endoscopic aplication of the fistula was reported with a good results ( 4 cases). There were no serious advers effects. The investigators want to use also TCA 50% for endoscopic repair in children with recurrent TEF.

Unknown status2 enrollment criteria

Nutritional Management of Acute and Chronic Enterocutaneous Fistulae

Enterocutaneous Fistulae

To Investigate whether different routes of nutrition affect the probability of fistula closure in patients with an enterocutaneous fistula

Unknown status6 enrollment criteria

Validations of New cut-of for the Stratification of Postoperative Complications,Drains Management...

Pancreas CancerPancreatic Fistula

Pancreatic fistula (PF) represents the Achille's heel of pancreatic surgery and is the main cause of postoperative morbidity since it can determine the onset of others complications such as abdominal abscesses, surgical wound infections, sepsis and bleeding, that can sometimes be fatal. During a previous study conducted at the University Campus Bio-Medico of Rome, Department of General Surgery there were identified cut-offs of amylase levels on the abdominal drainage fluid dosed in I postoperative day (POD1) and III postoperative day (POD3) which can significantly predict PF and in particular clinically relevant fistulas as well as abdominal collections and biliary fistulas, if related to some specific findings of the abdominal CT routine performed in POD3. The aim of this research project is to validate the cut-offs of the amylase levels on drainage fluid identified during the previous research in order to identify patients at risk of clinically relevant PF and to validate the use of abdomen CT without contrast in POD3 in patients with increased risk of biliary fistula.

Unknown status7 enrollment criteria

Paclitaxel-Coated Balloon for the Treatment of AVF

Arteriovenous Fistula

To evaluate the safety and efficacy of the Zylox Drug Coated Balloon (DCB) for treatment of subjects presenting with de novo or non-stented restenotic obstructive lesion of native arteriovenous dialysis fistulae (AVF) in the upper extremity in China.

Unknown status22 enrollment criteria

Human Amniotic Epithelial Cells for Treatment of Bronchial Fistula

Bronchial Fistula

Bronchial fistula (BF), an abnormal passage or communication between a bronchus and another part of the body, may develop when there are penetrating wounds of the thorax and after lung surgery. Without effective therapy, treatment of BF is a challenge, with a high rate of mortality and teratogenicity. The investigators will conduct endoscopic injection of human amniotic epithelial cells to fistula, observe the recovery of bronchial fistula and systemic reactions, to investigate the application of human amniotic epithelial cells in the treatment of bronchial fistula.

Unknown status5 enrollment criteria

Trial on Use of Coloshield in Transanal and Anal Surgery

Fistula-in-anoRectal Polyp3 more

In various transanal and anal procedures it is desirable to clean the operating field from stool contamination. Thus mechanical bowel preparation is not well tolerated by patients. Enema does not provide sufficient effect. By the use of Coloshield a rectal washout might be performed and enable a clean operating field. In this randomized controlled trial the macroscopic contamination of the rectum with and without Coloshield is compared using the Boston Bowel Preparation Score (0-3).

Unknown status10 enrollment criteria

Access Flow Based Intervention for Management of Arteriovenous Hemodialysis Access Dysfunction....

Hemodialysis Arteriovenous Fistula Maturation Failure

Hemodialysis (HD) vascular access dysfunction is a huge clinical problem which results in significant clinical morbidity in patients with End Stage Renal Disease (ESRD), causing a severe economic burden on any health care system. Arteriovenous (A-V) dialysis accesses are the preferred form of permanent dialysis access as compared to central venous catheters (CVC) . One of the reasons for CVC use is poor long term patency rates of A-V access. Arteriovenous Grafts (AVG) have a primary patency rates of just under 50% at 12 months and around 33% at 18 months. Native arteriovenous fistula (AVF) are slightly better with primary patency rates of around 60 percent at one year and 51 percent at 2 years. The most common cause for AVF and AVG dysfunction is stenosis development due to neointimal hyperplasia (NIH) within the circuit leading to access thrombosis. Percutaneous transluminal angioplasty (PTA) is the current standard of treatment for these lesions. Despite being the treatment of choice for these lesions patency rates after PTA continue to be dismal. One of the problems with poor long term outcomes after successful intervention is how you assess immediate intervention success. Successful angioplasty is defined by Dialysis Outcome Quality Initiative (DOQI) guidelines as one where only less than 30% residual stenosis remains at the end of intervention. Unfortunately angiographic images post angioplasty correlate poorly with improvement of access flows through the arteriovenous circuit. There are two main problems with these practice standards. First, they are based on a 2-dimensional angiographic view of the lesion which may be misleading. Secondly, this assessment of recoil is very subjective and not base on objective data. Access flow monitoring can now be performed intra-procedurally with thermal dilution technique. Its benefit was shown in a small pilot study. To date there have not been any randomized controlled trials to assess the benefit of such an approach where intervention is based on improvements in access flow at the time of intervention. We hypothesize that such an approach will improve outcomes after interventions related to access dysfunction. This may also identify the right scenarios in which stent placement may benefit thus improving outcomes after stent placement as well.

Unknown status10 enrollment criteria

The Iliac Arterio-venous Fistula for Treatment of Neurally Mediated Syncope Study

Neurally Mediated Syncope

The purpose of the study is to investigate the efficacy of the ROX coupler in treating patients with tilt test proven Neurally mediated syncope.

Unknown status5 enrollment criteria
1...464748...72

Need Help? Contact our team!


We'll reach out to this number within 24 hrs