Active clinical trials for "Hernia, Ventral"

Randomized trial to compare outcomes of robot-assisted and laparoscopic ventral hernia repair surgery.

The purpose of this prospective paper is to make a comparison between laparoscopic and opening approaches in ventral hernia repair, taking into account absence of recurrence in long - time (5 years), results centered at patient, especially satisfaction with expectations and improvement of normal physical activity, morbidity that particular form must include chronic pain, adjusted mortality through co-morbidities and, finally, prospective expenses, related to both effectiveness and utility

Large abdominal wall hernias are surgically challenging to repair and often associated with significant postoperative complications. Risk factors associated with surgical site complications, such as infection and wound dehiscence, include obesity, diabetes, and smoking. In these high risk patients, the placement of synthetic mesh increases the risk of mesh infection, enterocutaneous fistula formation, and mesh explantation. One of the larger studies of risk factors associated with mesh explantation demonstrated concomitant intra-abdominal procedures have a greater than 6-fold increased hazard of subsequent mesh explantation. As an alternative to synthetic meshes, bioprosthetic meshes derived from the decellularization and processing of allogeneic or xenogeneic tissue sources have been introduced that can often allow the surgeon to treat the surgical site occurrences and salvage the repair without required mesh explantation. Low rates of mesh infection and explantation have been reported for bioprosthetic meshes and are recommended in these complicated patients by the Ventral Hernia Working Group, based on the best available clinical evidence. Despite widespread use of bioprosthetic mesh, there continues to be concern for complications associated with their use (i.e. high seroma and recurrence rates, etc.). This has led to the modification of these matrices by several industry leaders (Acelity, Cook, Integra, etc.) to include a fenestrated platform to allow for fluid to flow through the matrix upon implantation while supporting regeneration in complex abdominal wall reconstruction. To our knowledge, there are no clinical studies prospectively evaluating the long term clinical outcomes for abdominal wall reconstruction procedures involving fenestrated macropourous biologic matrices.This macroporous technology allows for tissue revascularization and integration of the biologic graft and thus an expected improvement in overall outcome. Bioprosthetic fenestrated materials such as Surgimend MP® were developed to assist with earlier incorporation and vascularization of the biologic graft while providing reinforcement of hernia repair. However, there is an absence of high quality prospective data regarding the use of these materials in complicated abdominal wall reconstruction, and no comparative data exists. This study is a prospective, case series study evaluating the efficacy and performance of SurgiMend MP® during complex ventral hernia repairs. This case series involves a biologically derived hernia mesh under its cleared FDA indication for hernia repair. Efficacy will be determined by quantifying surgical complications, hernia recurrence, and cost effectiveness endpoints.

Incisional hernias are a frequent consequence of abdominal surgery. Current clinical efforts are primarily focused on improving repair materials and surgical techniques to correct these hernias instead of the optimal solution: prevention. A product called MYOSEAL is currently being developed to prevent hernia formation after abdominal surgery by using fibrin tissue sealant and silver particles to prophylactically enhance the early wound healing of myofascial incisions. The purpose of this phase 1 study is to examine the safety of applying MYOSEAL immediately after abdominal wall suture closure in patients undergoing abdominal surgery. The investigators expect that applying this product to sutured myofascial incisions will increase collagen formation in the wound and thus prevent the formation of incisional hernias.

Complex ventral hernia is a challenging problem well known to be associated with occurrence of serious complications. The major problems encountered in such cases Include: loss of domain with subsequent increase of intra-abdominal pressure after repair, the huge musculo-fascial defect and skin scarring with possible skin viability problem resulting from the dissection of skin flaps. There is no unified accepted evidence-based approach for its repair and is attended with a high recurrence rate that may reach up to 67%. In a previous study using the ADMIR technique of intraperitoneal repair and after a long-term follow-up the investigator was able to reduce the recurrence rate to 4% after an average follow up period of 142 months. In the current study the investigator will use the same technique of intraperitoneal mesh repair comparing the polypropylene light weight, wide pore, soft mesh with a double mesh using the same polypropylene mesh and a vicryl mesh as a protective layer against the bowel. If it is proven as effective as the mesh with protective layer and with no increased risk of morbidity, this will result in marked reduction of the cost of treatment by nearly 90 % and will abolish the waiting list of patients as the polypropylene mesh is readily available.

This study is comparing the outcomes patients undergoing LVHR, PFC as opposed to a bridged repair with assessment of patient reported satisfaction and function at 6 months of follow-up.

Primary ventral hernias, such as umbilical and epigastric hernias, are best repaired with abdominal wall reinforcement by mesh implantation. Mesh-devices using a dual-sided mesh technology have been developed for the specific indication of small ventral hernias; this technique is very attractive because the mesh can be introduced through a nearly invisible scar in the umbilicus. The dual layer of the mesh inhibits the formation of adhesions of the viscera to the mesh so, if wanted, it can be positioned in a intraperitoneal position. No literature is available on the adequate size of mesh needed to repair a hernia defect of an umbilical or epigastric hernia. Very small hernias are now often enlarged for repair with a large mesh device. Small hernias might benefit of repair with a small mesh device so no enlargement of the defect is necessary Larger hernias might benefit from a larger mesh size to have more overlap of the mesh beyond the hernia defect. With this prospective cohort study the investigators want to explore the efficacy of C-QUR V-Patch of different sizes for the different sizes of hernia defects.

Background: Laparoscopic repair of ventral hernias has gained popularity, since many studies and a recent meta-analysis have reported encouraging results and recurrence rates similar to open repair. The choice of the mesh and fixation methods is of paramount importance during laparoscopic approach, and nowadays, lightweight macropore meshes specifically designed for laparoscopic approach represent the first choice in several studies, due to the biomechanical properties and the optimal integration into the abdominal wall. No data with statistical relevance exist on the choice of fixation methods. Primary end point of the present Italian multicentric prospective randomized trial is to evaluate the safety and effectiveness of two different tacks to fix the lightweight polypropylene mesh (Physiomesh™) during laparoscopic incisional hernia repair: metallic spiral tacks (Protack™) vs absorbable "U" shaped tacks (Securestrap™) Design of the Study: 200 patients with ventral hernia will be randomized into two groups: Group A patients will be submitted to laparoscopic repair by Physiomesh fixed by Protack; Group B patients will be submitted to laparoscopic repair by Physiomesh fixed by Securestrap. Blind randomization will be guaranteed by an on-line software with specific key access for every surgical unit participating in the study. Patients demographics and characteristics, preoperative studies, intraoperative and postoperative results and complications, as well as scheduled follow-up will be recorded and uploaded to the database. Data represented by continuous variables will be expressed as arithmetic mean +/- standard deviation. Other data will be expressed as geometric mean +/- 95% confidence interval. Data representing low incidence events will be expressed as number and percentage of occurrence for each group. Statistical significance for all analyses will be indicated by a p value of 0.05 or less.

Ventral hernia repair leads to more than expected pain. This is thought to be secondary to nerve pain at the lateral transfixion sutures. Systemic lidocaine given pre-op has in other situations decreased neurogenic pain. This study will examine its effects on pain experienced after ventral hernia repair.

The proposed study aims to assess the effect of different levels of muscle relaxation on the success of low-pressure insufflation, surgical conditions and patient recovery following laparoscopic repair of a ventral hernia (VHR) between 2 and 10cm in diameter. Patients will be randomized to moderate (TOF 1-2) or deep (post tetanic count 1-2) relaxation. Specific Aim 1. Compare two different modes of neuromuscular blockade (moderate and deep) on the ability to maintain low insufflation pressure during laparoscopic VHR. All procedures will start with low-pressure insufflation (8 mm Hg). Surgeon assessment of the conditions will be serially performed during surgery on an established visual scale. If conditions are deemed less than adequate (score 1-2), insufflation pressure will incrementally increase up to 15 mm Hg. Outcome for this specific aim will be the mean insufflation pressure during each procedure, and the ability to perform low-pressure laparoscopic VHR. Specific Aim 2. Evaluate the success of moderate neuromuscular blockade on the ability to maintain good conditions (visual scale grade 4 or 5) for each. Surgical conditions will be considered successful when scores are maintained at 4 or 5 throughout the duration of the procedure. Outcome for this aim will be the mean score for surgical condition assessment for each procedure, using a previously published surgeon-driven scoring system (score 4-5 will be used as a surrogate of good visualization). Specific Aim 3. Assess patient recovery with low and high insufflation pressures during laparoscopic VHR. Patient overall satisfaction with recovery, pain level, pain medication requirement, PONV incidence and severity will be assessed in multiple time points following surgery. Outcomes for this aim will be mean pain (visual scale), PONV severity (analogue score) and incidence (binary outcome), and patient satisfaction using the QoR-15 survey. Assessments will be performed at 30 minutes, 1, 12 and 24 hours following surgery.