Comparing fibrin sealant with staples for mesh fixation in laparoscopic transabdominal hernia repair: a case control-study

Mesh fixation techniques in primary ventral or incisional hernia repair

BACKGROUND

The use of a mesh in primary ventral or incisional hernia repair lowers the recurrence rate  and is the accepted standard of care for larger defects. In laparoscopic primary ventral or incisional hernia repair the insertion of a mesh is indispensable. Different mesh fixation techniques have been used and refined over the years. The type of fixation technique is claimed to have a major impact on recurrence rates, chronic pain, health-related quality of life (HRQOL) and complication rates.

OBJECTIVES

To determine the impact of different mesh fixation techniques for primary and incisional ventral hernia repair on hernia recurrence, chronic pain, HRQOL and complications.

SEARCH METHODS

On 2 October 2020 we searched CENTRAL, MEDLINE (Ovid MEDLINE(R)) Epub Ahead of Print, In-Process & Other Non-Indexed Citations, Ovid MEDLINE(R) Daily and Ovid MEDLINE(R)), Ovid Embase, and two trials registries. We also performed handsearches, and contacted experts from the European Hernia Society (EHS).

SELECTION CRITERIA

We included randomised controlled trials (RCTs) including adults with primary ventral or incisional hernia that compared different types of mesh fixation techniques (absorbable/nonabsorbable sutures, absorbable/nonabsorbable tacks, fibrin glue, and combinations of these techniques).

DATA COLLECTION AND ANALYSIS

We extracted data in standardised piloted tables, or if necessary, directly into Review Manager 5. We assessed risks of bias with the Cochrane 'Risk of bias' tool. Two review authors independently selected the publications, and extracted data on results. We calculated risk ratios (RRs) for binary outcomes and mean differences (MDs) for continuous outcomes. For pooling we used an inverse-variance random-effects meta-analysis or the Peto method in the case of rare events. We prepared GRADE 'Summary of findings' tables. For laparoscopic repair we considered absorbable tacks compared to nonabsorbable tacks, and nonabsorbable tacks compared to nonabsorbable sutures as key comparisons.

MAIN RESULTS

We included 10 trials with a total of 787 participants. The number of randomised participants ranged from 40 to 199 per comparison. Eight studies included participants with both primary and incisional ventral hernia. One study included only participants with umbilical hernia, and another only participants with incisional hernia. Hernia size varied between studies. We judged the risk of bias as moderate to high. Absorbable tacks compared to nonabsorbable tacks Recurrence rates in the groups were similar (RR 0.74, 95% confidence interval (CI) 0.17 to 3.22; 2 studies, 101 participants). It is uncertain whether there is a difference between absorbable tacks and nonabsorbable tacks in recurrence because the certainty of evidence was very low. Evidence suggests that the difference between groups in early postoperative, late follow-up, chronic pain and HRQOL is negligible. Nonabsorbable tacks compared to nonabsorbable sutures At six months there was one recurrence in each group (RR 1.00, 95% CI 0.07 to 14.79; 1 study, 36 participants). It is uncertain whether there is a difference between nonabsorbable tacks and nonabsorbable sutures in recurrence because the certainty of evidence was very low. Evidence suggests that the difference between groups in early postoperative, late follow-up and chronic pain is negligible. We found no study that assessed HRQOL. Absorbable tacks compared to absorbable sutures No recurrence was observed at one year (very low certainty of evidence). Early postoperative pain was higher in the tacks group (VAS 0 - 10: MD -2.70, 95% CI -6.67 to 1.27; 1 study, 48 participants). It is uncertain whether there is a difference between absorbable tacks compared to absorbable sutures in early postoperative pain because the certainty of evidence was very low. The MD for late follow-up pain was -0.30 (95% CI -0.74 to 0.14; 1 study, 48 participants). We found no study that assessed HRQOL. Combination of different fixation types (tacks and sutures) or materials (absorbable and nonabsorbable) There were mostly negligible or only small differences between combinations (e.g. tacks plus sutures) compared to a single technique (e.g. sutures only), as well as combinations compared to other combinations (e.g. absorbable sutures combined with nonabsorbable sutures compared to absorbable tacks combined with nonabsorbable tacks) in all outcomes. It is uncertain whether there is an advantage for combining different fixation types or materials for recurrence, chronic pain, HRQOL and complications, because the evidence certainty was very low or low, or we found no study on important outcomes. Nonabsorbable tacks compared to fibrin sealant The two studies showed different directions of effects: one showed higher rates for nonabsorbable tacks, and the other showed higher rates for fibrin sealant. Low-certainty evidence suggests that the difference between groups in early postoperative, late follow-up, chronic pain and HRQOL is negligible. Absorbable tacks compared to fibrin sealant One recurrence in the tacks group and none in the fibrin sealant group were noted after one year (low certainty of evidence). Early postoperative pain might be slightly lower using tacks (VAS 0 - 100; MD -12.40, 95% CI -27.60 to, 2.80;1 study, 50 participants; low-certainty evidence). The pattern of pain and HRQOL course over time (up to 1 year) was similar in the groups (low certainty of evidence).

AUTHORS' CONCLUSIONS

Currently none of the techniques can be considered superior to any other, because the certainty of evidence was low or very low for all outcomes.

AN IMPROVED TRANSABDOMINAL PREPERITONEAL ALLOPLASTY FOR RECURRENT INGUINAL HERNIAS AFTER LICHTENSTEIN’S SURGERY

The aim. Improve results of the surgical treatment of recurrent inguinal hernias after Lichtenstein's surgery by using an advanced TAPP technique. Materials and methods. An analysis of the surgical treatment of patients with recurrent inguinal hernias after Lichtenstein's surgery using traditional and improved preperitoneal transabdominal alloplasty (TAPP), for the period of 2012–2019, was performed. The traditional TAPP technique was performed for 52 patients who made up the 1st group. An improved TAPP technique was implemented for 53 patients who composed the 2nd group. The features of the improved TAPP technique, which was different from the traditional one, were by additional mobilization of the parietal peritoneum by 3–4 cm along the upper edge of the defect, the mesh implant was used with a larger size in comparison to the classical one – 15×15 cm and fixed, besides the traditional points, additionally on the lower and lateral edges with medical glue Sulfacrylate. Results. The results of surgical treatment in the early postoperative period were not significantly different and were comparable. During the long-term period, 51 patients from the 1st group, and 50 patients from the 2nd group were examined. Thus, in the first group in 4 (7.9 %) cases during 6 months period after the application of the traditional TAРР technique, chronic pain was observed on the site of the implanted mesh; among the 2nd group of patients chronic inguinal pain was not observed. In 5 (9.8 %) patients of the 1st group, the recurrence of inguinal hernia was diagnosed, instead of the 2nd group, where relapse was observed in 1 (2 %) case. Conclusions. Thereby, the results of the traditional and improved TAPP techniques confirm the higher efficiency of the improved technique, due to the absence of the chronic inguinal pain and a lower rate of relapses, which is achieved by wider mobilization of the parietal peritoneum along the upper edge of the defect, and usage of the larger mesh and its additional fixation by gluing it at the lower lateral edge.

Laparoscopic total extraperitoneal inguinal hernia repair: Retrospective study on prosthetic materials, postoperative management, and quality of life

Laparoscopic inguinal hernia repair is one of the most frequently performed operations. However, the search for the most appropriate prosthetic materials continues to occupy the surgical community. The purpose of this study was to evaluate the postoperative short- and mid-term effects (like duration of stay, number and type of complications, and inguinal pain) of laparoscopic inguinal hernia repair using the total extraperitoneal (TEP) approach. The evaluation encompassed different types of mesh and fixation devices, as well as medications prescribed during hospitalization.This retrospective study was conducted at the General, Laparoendoscopic, Bariatric, and Robotic Surgical Clinic of the Athens Medical Center. Clinical data from 524 patients were evaluated. The answers from an appropriately designed questionnaire completed from each individual were used to obtain information about their postoperative course. The statistical analysis was implemented in SPSS v 23.Analysis revealed that pain sensation on discharge decreased with increasing age (P < .05). No clear relationship was found between surgical clips and pain (P = .292), as well as mesh absorbability and chronic pain (P = .539). The major postoperative complications were annoyance and discomfort (15.9%). The recurrence rate was 1.7%.Postoperative complications following the TEP approach were mostly found to be minor; chronic pain, as an aspect of impaired quality of life, was not experienced in the majority (89.08%). The properties of prosthetic materials used and the type of medications prescribed were not found to exert a significant role in satisfactory postoperative outcomes.

International guidelines for groin hernia management

INTRODUCTION

Worldwide, more than 20 million patients undergo groin hernia repair annually. The many different approaches, treatment indications and a significant array of techniques for groin hernia repair warrant guidelines to standardize care, minimize complications, and improve results. The main goal of these guidelines is to improve patient outcomes, specifically to decrease recurrence rates and reduce chronic pain, the most frequent problems following groin hernia repair. They have been endorsed by all five continental hernia societies, the International Endo Hernia Society and the European Association for Endoscopic Surgery.

METHODS

An expert group of international surgeons (the HerniaSurge Group) and one anesthesiologist pain expert was formed. The group consisted of members from all continents with specific experience in hernia-related research. Care was taken to include surgeons who perform different types of repair and had preferably performed research on groin hernia surgery. During the Group's first meeting, evidence-based medicine (EBM) training occurred and 166 key questions (KQ) were formulated. EBM rules were followed in complete literature searches (including a complete search by The Dutch Cochrane database) to January 1, 2015 and to July 1, 2015 for level 1 publications. The articles were scored by teams of two or three according to Oxford, SIGN and Grade methodologies. During five 2-day meetings, results were discussed with the working group members leading to 136 statements and 88 recommendations. Recommendations were graded as "strong" (recommendations) or "weak" (suggestions) and by consensus in some cases upgraded. In the Results and summary section below, the term "should" refers to a recommendation. The AGREE II instrument was used to validate the guidelines. An external review was performed by three international experts. They recommended the guidelines with high scores. The risk factors for inguinal hernia (IH) include: family history, previous contra-lateral hernia, male gender, age, abnormal collagen metabolism, prostatectomy, and low body mass index. Peri-operative risk factors for recurrence include poor surgical techniques, low surgical volumes, surgical inexperience and local anesthesia. These should be considered when treating IH patients. IH diagnosis can be confirmed by physical examination alone in the vast majority of patients with appropriate signs and symptoms. Rarely, ultrasound is necessary. Less commonly still, a dynamic MRI or CT scan or herniography may be needed. The EHS classification system is suggested to stratify IH patients for tailored treatment, research and audit. Symptomatic groin hernias should be treated surgically. Asymptomatic or minimally symptomatic male IH patients may be managed with "watchful waiting" since their risk of hernia-related emergencies is low. The majority of these individuals will eventually require surgery; therefore, surgical risks and the watchful waiting strategy should be discussed with patients. Surgical treatment should be tailored to the surgeon's expertise, patient- and hernia-related characteristics and local/national resources. Furthermore, patient health-related, life style and social factors should all influence the shared decision-making process leading up to hernia management. Mesh repair is recommended as first choice, either by an open procedure or a laparo-endoscopic repair technique. One standard repair technique for all groin hernias does not exist. It is recommended that surgeons/surgical services provide both anterior and posterior approach options. Lichtenstein and laparo-endoscopic repair are best evaluated. Many other techniques need further evaluation. Provided that resources and expertise are available, laparo-endoscopic techniques have faster recovery times, lower chronic pain risk and are cost effective. There is discussion concerning laparo-endoscopic management of potential bilateral hernias (occult hernia issue). After patient consent, during TAPP, the contra-lateral side should be inspected. This is not suggested during unilateral TEP repair. After appropriate discussions with patients concerning results tissue repair (first choice is the Shouldice technique) can be offered. Day surgery is recommended for the majority of groin hernia repair provided aftercare is organized. Surgeons should be aware of the intrinsic characteristics of the meshes they use. Use of so-called low-weight mesh may have slight short-term benefits like reduced postoperative pain and shorter convalescence, but are not associated with better longer-term outcomes like recurrence and chronic pain. Mesh selection on weight alone is not recommended. The incidence of erosion seems higher with plug versus flat mesh. It is suggested not to use plug repair techniques. The use of other implants to replace the standard flat mesh in the Lichtenstein technique is currently not recommended. In almost all cases, mesh fixation in TEP is unnecessary. In both TEP and TAPP it is recommended to fix mesh in M3 hernias (large medial) to reduce recurrence risk. Antibiotic prophylaxis in average-risk patients in low-risk environments is not recommended in open surgery. In laparo-endoscopic repair it is never recommended. Local anesthesia in open repair has many advantages, and its use is recommended provided the surgeon is experienced in this technique. General anesthesia is suggested over regional in patients aged 65 and older as it might be associated with fewer complications like myocardial infarction, pneumonia and thromboembolism. Perioperative field blocks and/or subfascial/subcutaneous infiltrations are recommended in all cases of open repair. Patients are recommended to resume normal activities without restrictions as soon as they feel comfortable. Provided expertise is available, it is suggested that women with groin hernias undergo laparo-endoscopic repair in order to decrease the risk of chronic pain and avoid missing a femoral hernia. Watchful waiting is suggested in pregnant women as groin swelling most often consists of self-limited round ligament varicosities. Timely mesh repair by a laparo-endoscopic approach is suggested for femoral hernias provided expertise is available. All complications of groin hernia management are discussed in an extensive chapter on the topic. Overall, the incidence of clinically significant chronic pain is in the 10-12% range, decreasing over time. Debilitating chronic pain affecting normal daily activities or work ranges from 0.5 to 6%. Chronic postoperative inguinal pain (CPIP) is defined as bothersome moderate pain impacting daily activities lasting at least 3 months postoperatively and decreasing over time. CPIP risk factors include: young age, female gender, high preoperative pain, early high postoperative pain, recurrent hernia and open repair. For CPIP the focus should be on nerve recognition in open surgery and, in selected cases, prophylactic pragmatic nerve resection (planned resection is not suggested). It is suggested that CPIP management be performed by multi-disciplinary teams. It is also suggested that CPIP be managed by a combination of pharmacological and interventional measures and, if this is unsuccessful, followed by, in selected cases (triple) neurectomy and (in selected cases) mesh removal. For recurrent hernia after anterior repair, posterior repair is recommended. If recurrence occurs after a posterior repair, an anterior repair is recommended. After a failed anterior and posterior approach, management by a specialist hernia surgeon is recommended. Risk factors for hernia incarceration/strangulation include: female gender, femoral hernia and a history of hospitalization related to groin hernia. It is suggested that treatment of emergencies be tailored according to patient- and hernia-related factors, local expertise and resources. Learning curves vary between different techniques. Probably about 100 supervised laparo-endoscopic repairs are needed to achieve the same results as open mesh surgery like Lichtenstein. It is suggested that case load per surgeon is more important than center volume. It is recommended that minimum requirements be developed to certify individuals as expert hernia surgeon. The same is true for the designation "Hernia Center". From a cost-effectiveness perspective, day-case laparoscopic IH repair with minimal use of disposables is recommended. The development and implementation of national groin hernia registries in every country (or region, in the case of small country populations) is suggested. They should include patient follow-up data and account for local healthcare structures. A dissemination and implementation plan of the guidelines will be developed by global (HerniaSurge), regional (international societies) and local (national chapters) initiatives through internet websites, social media and smartphone apps. An overarching plan to improve access to safe IH surgery in low-resource settings (LRSs) is needed. It is suggested that this plan contains simple guidelines and a sustainability strategy, independent of international aid. It is suggested that in LRSs the focus be on performing high-volume Lichtenstein repair under local anesthesia using low-cost mesh. Three chapters discuss future research, guidelines for general practitioners and guidelines for patients.

CONCLUSIONS

The HerniaSurge Group has developed these extensive and inclusive guidelines for the management of adult groin hernia patients. It is hoped that they will lead to better outcomes for groin hernia patients wherever they live. More knowledge, better training, national audit and specialization in groin hernia management will standardize care for these patients, lead to more effective and efficient healthcare and provide direction for future research.

Comparison of Absorbable Versus Nonabsorbable Tackers in Terms of Long-term Outcomes, Chronic Pain, and Quality of Life After Laparoscopic Incisional Hernia Repair: A Randomized Study

BACKGROUND

Laparoscopic incisional and ventral hernia repair (LIVHR) has been associated with a high incidence acute and chronic pain due to use of nonabsorbable tackers. Several absorbable tackers have been introduced to overcome these complications. This randomized study was done to compare 2 techniques of mesh fixation, that is, nonabsorbable versus absorbable tackers for LIVHR.

MATERIALS AND METHODS

Ninety patients admitted for LIVHR repair (defect size <15 cm) were randomized into 2 groups: nonabsorbable tacker fixation (NAT group, 45 patients) and absorbable tacker fixation (AT group, 45 patients). Intraoperative variables and postoperative outcomes were recorded and analyzed.

RESULTS

Patients in both the groups were comparable in terms of demographic profile and hernia characteristics. Mesh fixation time and operation time were also comparable. There was no significant difference in the incidence of immediate postoperative and chronic pain over a mean follow-up of 8.8 months. However, cost of the procedure was significantly higher in AT group (P<0.01) and NAT fixation was more cost effective as compared with AT. Postoperative quality of life outcomes and patient satisfaction scores were also comparable.

CONCLUSIONS

NAT is a cost-effective method of mesh fixation in patients undergoing LIVHR with comparable early and late postoperative outcomes in terms of pain, quality of life, and patient satisfaction scores.

Tackers versus glue mesh fixation: an objective assessment of postoperative acute and chronic pain using inflammatory markers

PURPOSE

Laparoscopic hernioplasty has become a popular choice for inguinal hernia repair since its advent in 1990s. Postoperative pain is an undesirable clinical outcome impairing daily activity of 22.5% of patients. The aim of this study is to evaluate postoperative acute and chronic pain via inflammatory markers as an objective assessment following tacks or glue mesh fixation in TEP repair.

METHODS

Sixty-six (66) patients with unilateral uncomplicated inguinal hernia were randomized into 34 patients in the tacker and 32 patients in cyanoacrylate glue mesh fixation in TEP repair. The extent of surgical trauma was evaluated by measuring inflammatory markers of C-reactive protein, white blood cell count at 48 h, and ESR at 3 months postoperatively. Postoperative acute and chronic pain was assessed by recording the visual analogue scale scores and surgical complications were recorded over 3 months of the study period.

RESULTS

The median CRP and WBC levels at postoperative 48 h in both groups raised significantly from the baseline values (p < 0.05), however, did not differ significantly between the two study groups at 48 h (p > 0.05). The median ESR level increased significantly at 3 months postoperatively from baseline in the glue mesh fixation group only (p < 0.05), however, did not differ significantly between the two study groups (p > 0.05). There was no significant difference for VAS scores at all timelines between the tacker and glue mesh fixation group (p > 0.05).

CONCLUSION

Cyanoacrylate glue mesh fixation technique as an alternative method to mechanical fixation in TEP repair is comparable to tacker and can be considered to be safe and feasible.

Mesh Fixation with Fibrin Sealant in Totally Extraperitoneal Hernia Repair

INTRODUCTION

Repair of inguinal hernia is a common procedure, but there is a lack of consensus as to the optimal repair technique along with the use of mesh and methods of mesh fixation. The objective of this study was to evaluate the efficacy and safety of fibrin sealant for mesh fixation in laparoscopic totally extraperitoneal (TEP) inguinal hernia repair.

MATERIALS AND METHODS

A study was conducted of the first 200 patients undergoing TEP hernia repair with mesh fixation using fibrin sealant between March 2012 and January 2014. The primary outcome measures were (1) chronic pain (persisting for >3 months), (2) persistence of hernia (recurrence identified within first 2 weeks postoperatively), (3) hernia recurrence, and (4) any additional perioperative complications. The mean follow-up in the series was 34.4 ± 6.1 months (range 22.2-44.1).

RESULTS

Of the 278 hernias repaired in 204 patients (74 bilateral, 130 unilateral), 38 were recurrent and 240 were primary. Three patients (1.5%) had a persistent hernia, including one with a planned return to the operating room the next day due to poor visualization. Three patients (1.5%) had a hernia recurrence. Twelve patients (5.9%) reported experiencing chronic pain. The remaining complications were minor and resolved over time.

CONCLUSIONS

TEP repair of inguinal hernia using mesh secured with fibrin sealant can be effectively used to treat primary, recurrent, unilateral, and bilateral inguinal hernias in adults with minimal recurrence rates and complications during almost 3 years of follow-up.

Use of fibrin glue in preventing pseudorecurrence after laparoscopic total extraperitoneal repair of large indirect inguinal hernia

Purpose

Seroma is among the most common complications of laparoscopic total extraperitoneal (TEP) for especially large indirect inguinal hernia, and may be regarded as a recurrence by some patients. A potential area localized behind the mesh and extending from the inguinal cord into the scrotum may be one of the major etiological factors of this complication. Our aim is to describe a novel technique in preventing pseudorecurrence by using fibrin sealant to close that potential dead space.

Methods

Forty male patients who underwent laparoscopic TEP for indirect inguinal hernia with at least 100-mL volume were included in this prospective clinical study. While fibrin sealant was used to close the potential dead space in the study group, nothing was used in the control group. The volume of postoperative fluid collection on ultrasound was compared between the groups.

Results

Patient characteristics and the volumes of hernia sac were similar between the 2 groups. The mean volume of postoperative fluid collection was found as 120.2 mL in the control group and 53.7 mL in the study group, indicating a statistical significance (P < 0.001).

Conclusion

Minimizing the potential dead space with a fibrin sealant can reduce the amount of postoperative fluid collection, namely the incidence of pseudorecurrence.

Fibrin glue versus staple for mesh fixation in laparoscopic transabdominal preperitoneal repair of inguinal hernia: a meta-analysis and systematic review

BACKGROUND

The aim of this study was to compare outcomes of mesh fixation using fibrin glue versus staple in laparoscopic transabdominal preperitoneal (TAPP) repair of inguinal hernia.

METHODS AND PROCEDURES

Database searches were carried out in PubMed, Embase, Cochrane Library, Web of Science and Cochrane databases until February 2016 using specific search terms. Studies which compared fibrin glue and staple for mesh fixation in laparoscopic transabdominal preperitoneal repair of inguinal hernia were enrolled. Outcomes, including inguinal hernia recurrence, chronic inguinal pain, seroma or hematoma formation and operating time, were measured.

RESULTS

Four randomized controlled trials (RCTs, 430 patients) and six non-randomized controlled trials (non-RCTs, 8637 patients) were analyzed. Meta-analysis of the four RCTs showed no significant difference in hernia recurrence (OR 2.10, 95 % CI 0.61, 7.22), seroma or hematoma formation (OR 0.55, 95 % CI 0.27, 1.14) and operating time (SMD 0.80, 95 % CI -0.34, 1.94). Similarly, there was no significant difference in most of the outcomes of the six non-RCTs.

CONCLUSIONS

Our meta-analysis and systematic review shows that the use of fibrin glue fixation may provide an alternative approach to staple fixation in TAPP inguinal hernia repair without increasing the postoperative morbidity. Large-scale RCTs with long-term follow-up are still needed to further assess postoperative outcomes such as chronic pain and disease recurrence.

Comparison of the Clinical Outcome and Complications in Laparoscopic Hernia Repair of Inguinal Hernia With Mesh Fixation Using Fibrin Glue vs Tacker

Although laparoscopic repair offers a quick and less morbid way of treating hernias, complications like hematoma, seroma, neuralgia, recurrence, mesh infection, hydrocele, etc. are known. The present study was undertaken to compare various clinical outcomes between mesh fixation using fibrin glue and mesh fixation with tacker in a 3-months follow-up. One hundred patients aged 18 to 60 years having inguinal hernia admitted in Poona Hospital and Research Centre, Pune, between October 2012 and November 2014 for laparoscopic hernia surgery and ready to participate in this study were included. All of them underwent laparoscopic repair of hernia by total extra peritoneal (TEP) method following sample surgical protocol in all of them except for method of mesh fixation. Mean time calculated from insertion of the first trocar to beginning of skin suturing was 54.9 min in tacker group and 50.3 min in fibrin glue group with no statistically significant difference between the two. The incidence of urinary retention was significantly higher in tacker (34 %) as compared to fibrin glue (12 %) group. Incidence of hematoma was significantly higher in tacker group in 15-day follow-up, but there was no significant difference in hematoma formation at hernial sites in both groups after 15 days of follow-up. The incidence of neuralgia was significantly higher in the tacker group (24 %) compared with the fibrin glue group (2 %). Significantly, more number of people in the fibrin glue group 68 and 90 %, respectively, returned to work during 15 and 30 days follow-up as compared to the tacker group 46 and 64 %. Fibrin glue can be considered as an alternative to tacker for mesh fixation.

Use of human fibrin glue (Tisseel) versus staples for mesh fixation in laparoscopic transabdominal preperitoneal hernioplasty (TISTA): a randomized controlled trial (NCT01641718)

BACKGROUND

Inguinal hernia repair is one of the most common surgical procedures worldwide. This procedure is increasingly performed with endoscopic techniques (laparoscopy). Many surgeons prefer to cover the hernia gap with a mesh to prevent recurrence. The mesh must be fixed tightly, but without tension. During laparoscopic surgery, the mesh is generally fixed with staples or tissue glue. However, staples often cause pain at the staple sites, and they can cause scarring of the abdominal wall, which can lead to chronic pain. We designed a trial that aims to determine whether mesh fixation with glue might cause less postoperative pain than fixation with staples during a transabdominal preperitoneal patch plastic repair.

METHODS/DESIGN

The TISTA trial is a prospective, randomized, controlled, single-center trial with a two-by-two parallel design. All patients and outcome-assessors will be blinded to treatment allocations. For eligibility, patients must be male, ≥18 years old, and scheduled for laparoscopic repair of a primary inguinal hernia. One group comprises patients with a unilateral inguinal hernia that will be randomized to receive mesh fixation with either tissue glue or staples. The second group comprises patients with bilateral inguinal hernias. They will be randomized to receive mesh fixation with tissue glue either on the right or the left side and with staples on the other side. The primary endpoint will be pain under physical stress, measured at 24 h after surgery. Pain will be rated by the patient based on a numeric rating scale from 0 to 10, where 10 equals the worst pain imaginable. A total of 82 patients will be recruited (58 patients with unilateral inguinal hernias and 24 patients with bilateral hernias). This number is estimated to provide 90% power for detecting a pain reduction of one point on a numeric rating scale, with a standard deviation of one.

DISCUSSION

Patients with bilateral hernias will receive two meshes, one fixed with glue, and the other fixed with staples. This design will eliminate the inter-individual bias inherent in comparing pain measurements between two groups of patients.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT01641718.

A meta-analysis examining the use of tacker mesh fixation versus glue mesh fixation in laparoscopic inguinal hernia repair

BACKGROUND

The aim of this study was to systematically analyze the randomized trials comparing tacker mesh fixation with glue mesh fixation (GMF) in laparoscopic inguinal hernia repair (LIHR).

METHODS

Standard electronic database were searched to retrieve relevant randomized trials comparing tacker mesh fixation with GMF in LIHR, which were analyzed systematically using RevMan.

RESULTS

Five randomized controlled trials encompassing 1,001 patients were retrieved from the electronic databases. In a random-effects model, operating time, postoperative pain, postoperative complications, length of hospital stay and risk for hernia recurrence were statistically comparable between the 2 techniques of mesh fixation in LIHR. However, GMF was associated with a reduced risk for developing chronic groin pain.

CONCLUSIONS

GMF in LIHR does not increase the risk for hernia recurrence and reduces the risk for developing chronic groin pain. It is comparable with tacker mesh fixation in terms of operation time, postoperative pain, postoperative complications, length of hospital stay, and risk for hernia recurrence.

Randomized clinical trial of fibrin glue versus tacked fixation in laparoscopic groin hernia repair

BACKGROUND

Preliminary studies have indicated clinical advantages of mesh fixation using fibrin glue in transabdominal preperitoneal groin hernia repair (TAPP) compared with tack fixation. The aim of this randomized double-blinded, controlled, clinical trial is to compare fibrin glue with tacks fixation of mesh during TAPP.

METHODS

One hundred and twelve men with unilateral inguinal hernia were enrolled. Primary outcome was pain during coughing on postoperative day 1. Secondary outcomes were postoperative scores of pain at rest, discomfort, and fatigue (day 1 and cumulated day 0-3), incidence of moderate/severe nausea and/or vomiting, foreign-body sensation, and recurrence after 6 months. Outcome measures were assessed by visual analogue scale (VAS, 0-100 mm), verbal rating scale (no, light, moderate or severe) and numerical rating scales (NRS, 1-10).

RESULTS

One hundred patients were available for analysis. The fibrin group (n = 50) had significantly less pain during coughing on day 1 compared with the tacks group (n = 50) [median 23 (range 0-80) vs 35 (2-100) mm] (p = 0.020). Moreover, day 1 scores and all cumulated scores of pain during rest, discomfort, and fatigue were significantly lower in the fibrin group compared with the tacks group (all p-values ≤ 0.02). There was no significant difference in the incidence of nausea and/or vomiting (p > 0.05) or recurrence (fibrin glue n = 2, tacks n = 0, p = 0.241). Incidence of foreign-body sensation was significantly lower in the fibrin group at 1 month (p = 0.006).

CONCLUSIONS

Fibrin glue compared with tacks fixation improved the early postoperative outcome after TAPP. The trial was registered at clinicaltrials.gov NCT01000116.

Evaluation of fibrin sealant for biologic mesh fixation at the hiatus in a porcine model

BACKGROUND

The ideal method to secure biologic mesh during laparoscopic hiatal hernia repair remains uncertain. Suture or tack fixation can be technically difficult, and serious cardiovascular complications have been reported. Fibrin sealant (FS) offers a potential solution to this problem. We hypothesized that FS provides comparable mesh fixation to suture repair during laparoscopic mesh hiatoplasty.

STUDY DESIGN

Using a porcine model, laparoscopic hiatal hernia repair was performed with suture reapproximation of the crura and reinforcement with an acellular porcine dermal matrix. Prior to repair, animals were randomized to mesh fixation with sutures (S) or FS. After 30-day survival, an esophagram was performed, the diaphragm harvested, and mesh position, fixation, and incorporation were evaluated histologically and biomechanically using a T-peel test.

RESULTS

Twenty (10 S and 10 FS) laparoscopic hiatal hernia repairs were performed. Total operative time was significantly less in the FS group (74.7 versus 127.0 min, p < 0.01). There were no instances of mesh migration in any animal. Mean peel force did not differ significantly between the S and FS groups (0.21 vs. 0.18 N/mm, respectively; p = 0.49). There was no significant difference in cellular repopularization or inflammatory changes around the mesh.

CONCLUSIONS

Fibrin sealant offers a reasonable alternative to suturing biologic mesh during laparoscopic hiatal hernia repair with equivalent mesh fixation. At 30 days it provides adhesive strength similar to suture fixation, while significantly reducing operative time.

Staple versus fibrin glue fixation in laparoscopic total extraperitoneal repair of inguinal hernia: a systematic review and meta-analysis

BACKGROUND

Fixation of mesh is typically performed to minimize risk of recurrence in laparoscopic inguinal hernia repair. Mesh fixation with staples has been implicated as a cause of chronic inguinal pain. Our study aim is to compare mesh fixation using a fibrin sealant versus staple fixation in laparoscopic inguinal hernia and compare outcomes for hernia recurrence and chronic inguinal pain.

METHODS AND PROCEDURES

PubMed was searched through December 2010 by use of specific search terms. Inclusion criteria were laparoscopic total extraperitoneal repair inguinal hernia repair, and comparison of both mesh fibrin glue fixation and mesh staple fixation. Primary outcomes were inguinal hernia recurrence and chronic inguinal pain. Secondary outcomes were operative time, seroma formation, hospital stay, and time to return to normal activity. Pooled odds ratios (OR) were calculated assuming random-effects models.

RESULTS

Four studies were included in the review. A total of 662 repairs were included, of which 394 were mesh fixed by staples or tacks, versus 268 with mesh fixed by fibrin glue. There was no difference in inguinal hernia recurrence with fixation of mesh by staples/tacks versus fibrin glue [OR 2.13; 95% confidence interval (CI) 0.60-7.63]. Chronic inguinal pain (at 3 months) incidence was significantly higher with staple/tack fixation (OR 3.25; 95% CI 1.62-6.49). There was no significant difference in operative time, seroma formation, hospital stay, or time to return to normal activities.

CONCLUSIONS

The meta-analysis does not show an advantage of staple fixation of mesh over fibrin glue fixation in laparoscopic total extraperitoneal inguinal hernia repair. Because fibrin glue mesh fixation with laparoscopic inguinal hernia repair achieves similar hernia recurrence rates compared with staple/tack fixation, but decreased incidence of chronic inguinal pain, it may be the preferred technique.

Use of fibrin sealant (Tisseel/Tissucol) in hernia repair: a systematic review

BACKGROUND

Abdominal wall and inguinal hernia repair are the most frequently performed surgical procedures in the United States and Europe. However, traditional methods of mesh fixation are associated with a number of problems including substantial risks of recurrence and of postoperative and chronic pain. The aim of this systematic review is to summarize the clinical safety and efficacy of Tisseel/Tissucol fibrin sealant for hernia mesh fixation.

METHODS

A PubMed title/abstract search was conducted using the following terms: (fibrin glue OR fibrin sealant OR Tisseel OR Tissucol) AND hernia repair. The bibliographies of the publications identified in the search were reviewed for additional references.

RESULTS

There were 36 Tisseel/Tissucol studies included in this review involving 5,993 patients undergoing surgery for hernia. In open repair of inguinal hernias, Tisseel compared favorably with traditional methods of mesh fixation, being associated with shorter operative times and hospital stays and a lower incidence of chronic pain. Similarly, after laparoscopic/endoscopic inguinal hernia repair, Tisseel/Tissucol was associated with less use of postoperative analgesics and less acute and chronic postoperative pain than tissue-penetrating mesh-fixation methods. Other end points of concern to surgeons and patients are the risks of inguinal hernia recurrence and of complications such as hematoma formation and intraoperative bleeding. Comparative studies show that Tisseel/Tissucol does not increase the risk of these outcomes and may, in fact, decrease the risk compared with tissue-penetrating fixation methods. When used in the repair of incisional hernias, Tisseel/Tissucol significantly decreased both postoperative morbidity and duration of hospital stay.

CONCLUSIONS

Clinical evidence published to date supports the use of Tisseel/Tissucol as an option for mesh fixation in open and laparoscopic/endoscopic repair of inguinal and incisional hernias. Guidelines of the International Endohernia Society recommend fibrin sealant mesh fixation, especially in inguinal hernia repair. Nonfixation is reserved for selected cases.

Laparoscopic fixation of biologic mesh at the hiatus with fibrin or polyethylene glycol sealant in a porcine model

BACKGROUND

The objective of this study was to determine the acute and chronic fixation strengths achieved by fibrin or polyethylene glycol (PEG) sealants to secure biologic mesh at the esophageal hiatus in a porcine model.

METHODS

For this study, 32 female domestic pigs were divided into four groups of 8 each. The four groups respectively received acute fibrin sealant, acute PEG sealant, chronic fibrin sealant, and chronic PEG sealant. Laparoscopically, a 5.5 × 8.5-cm piece of Biodesign Surgisis Hiatal Hernia Graft (porcine small intestine submucosa) was oriented with the U-shaped cutout around the gastroesophageal junction and the short axis in the craniocaudal direction to simulate hiatal reinforcement with a biologic mesh. The mesh then was secured with 2 ml of either fibrin sealant or PEG sealant. The pigs in the acute groups were maintained alive for 2 h to allow for complete polymerization of the sealants, and the pigs in the chronic group were maintained alive for 14 days. After the pigs were euthanized, specimens of the mesh-tissue interface were subjected to lap shear testing to determine fixation strength, and hematoxylin and eosin (H&E) stained slides were evaluated for evidence of remodeling.

RESULTS

No significant differences were observed between the acute and chronic fixation strengths or the remodeling characteristics of the two sealants. However, fixation strength increased significantly over time for both types of sealant. Evidence of remodeling also was significantly more pronounced in the chronic specimens than in the acute specimens.

CONCLUSIONS

This study demonstrated the feasibility of using fibrin or PEG sealants to secure biologic mesh at the hiatus in a porcine model.

Histologic evaluation of absorbable and non-absorbable barrier coated mesh secured to the peritoneum with fibrin sealant in a New Zealand white rabbit model

PURPOSE

The purpose of this study is to evaluate the histologic response to fibrin sealant (FS) as an alternative fixation method for laparoscopic ventral hernia repair.

METHODS

One non-absorbable barrier mesh (Composix™) and three absorbable barrier meshes (Sepramesh™, Proceed™, and Parietex™ Composite) were used for the study, with uncoated macroporous polypropylene mesh (ProLite Ultra™) as the control. Three methods of fixation were used: #0-polypropylene suture + FS (ARTISS™, Baxter Healthcare Corp.), FS alone (ARTISS™), or tacks alone (n = 10 for each group). Two pieces of mesh (of dimensions 4 × 4-cm) were secured intraperitoneally in 75 New Zealand white rabbits. After 8 weeks, hematoxylin and eosin (H&E)-stained specimens were evaluated for host tissue response. Statistical significance (P < 0.05) was determined using a one-way analysis of variance (ANOVA) with Fisher's least significant difference (LSD) post hoc test.

RESULTS

Composix™ with FS only showed significantly greater cellular infiltration than with suture + FS (P = 0.0007), Proceed™ with FS only had significantly greater neovascularization than with suture + FS (P = 0.0172), and ProLite Ultra™ with suture + FS had significantly greater neovascularization than with tacks only (P = 0.046). Differences due to mesh type showed that Composix™ exhibited less extensive cellular infiltration (P ≤ 0.0032), extracellular matrix (ECM) deposition, and neovascularization, and demonstrated less inflammatory cells and more fibroblasts compared to the other meshes (P < 0.05).

CONCLUSIONS

FS did not have a significant histologic effect compared to tacks when utilized for the fixation of mesh to the peritoneum of New Zealand White rabbits. However, the mesh type did have a significant histologic effect. The permanent barrier mesh (Composix™) was associated with less histologic incorporation than absorbable barrier and macroporous meshes, as evidenced by lower levels of cellular infiltration, ECM deposition, and neovascularization, independent of the fixation method used.

Systematic review of the use of fibrin sealant in abdominal-wall repair surgery

PURPOSE

Our objective was to analyze the advantages and inconveniences associated with the use of fibrin sealant compared with mechanical means for mesh fixation following abdominal-wall surgery.

METHODS

Literature search was conducted in MedLine, EMBASE, and Cochrane Library Plus databases. Articles were randomized clinical trials, nonrandomized comparative studies, and case series containing at least ten patients.

RESULTS

The fibrin sealant was shown to be biocompatible with the surrounding tissue. In patients treated with fibrin sealant, lower prevalence of acute and chronic postoperative pain was observed, and less hemorrhagic complications occurred. There are no data on the influence of fibrin sealant on seroma decrease. Efficiency in experimental models was similar to that observed for mechanical methods of fixation. Also, adhesions with fibrin sealant were less than that for mechanical methods.

CONCLUSIONS

Compared with mechanical methods, fibrin sealant is an efficacious alternative for mesh fixation postsurgery of the abdominal wall.

State-of-the-Art Review: Hemostats, Sealants, and Adhesives II: Update As Well As How and When to Use the Components of the Surgical Toolbox

The goal of this submission is to describe how and when to best use hemostats, sealants, and adhesives as well as to compare their characteristics and to update the surgical toolbox with respect to any new products approved by the Food and Drug Administration (FDA) as of this date (November 2009). The materials will be presented in 3 major groups each containing specific categories: (1) hemostats; mechanical, active, flowable, and fibrin sealant, (2) sealants; fibrin sealant, polyethylene glycol polymer, and albumin and glutaraldehyde, (3) adhesives; cyanoacrylate, albumin and glutaraldehyde, and fibrin sealant. The categories will be used for comparisons based on safety, efficacy, usability, and cost. Recommendations with respect to how and when to best use these materials will be presented. A review of the recent literature is also provided with respect to the most recent uses of these materials in specific surgical specialties.

Evaluation of intraperitoneal placement of absorbable and nonabsorbable barrier coated mesh secured with fibrin sealant in a New Zealand white rabbit model

BACKGROUND

This study aimed to evaluate the acute and chronic fixation strength of fibrin sealant (FS) as an alternative method of fixation for laparoscopic ventral hernia repair (LVHR).

METHODS

Representative mesh types for LVHR included one nonabsorbable barrier mesh (Composix) and three absorbable barrier meshes (Sepramesh, Proceed, and Parietex composite). Macroporous polypropylene mesh (Prolite Ultra) served as the control mesh. Three methods of fixation were used, namely, 0-polypropylene suture+FS (ARTISS 4 IU), FS alone (ARTISS), and tacks alone, to secure 3×4-cm pieces of mesh (10 of each combination) to the peritoneal surface of New Zealand white rabbit abdominal wall. After 2 h of incubation at 37 °C, specimens underwent acute testing. Subsequently, a chronic phase was completed using the aforementioned fixation methods (10 of each combination), in which two 4×4-cm pieces of mesh were secured intraperitoneally in each of 75 New Zealand white rabbits, which survived 8 weeks until they were sacrificed. A transparent grid overlay was used to measure the mesh and adhesion area. Adhesion tenacity was characterized using the Garrard adhesion scale. In both the acute and chronic samples, a 3×3-cm area of mesh-tissue interface underwent lap shear testing at a rate of 0.42 mm/s using a tensiometer (Instron 5542). The maximum load sustained by the mesh-tissue construct was recorded as the acute fixation strength in newtons (N). Data are given as means±standard error of the mean. Statistical significance (p<0.05) was determined using a one-way analysis of variance (ANOVA) with Fisher's least significant difference (LSD) posttest or a nonparametric Kruskal-Wallis test (adhesion scores).

RESULTS

The acute fixation strength was significantly greater for all the meshes secured with either suture+FS or tacks alone than for FS alone (p<0.001 for all comparisons). All the meshes except Proceed demonstrated greater acute fixation strength with suture+FS than with tacks alone (p≤0.016). Composix achieved greater acute fixation with suture+FS than all the other meshes (p≤0.022). Acute fixation with suture + FS was greater for Parietex Composite and ProLite Ultra than for Proceed (p≤0.015). When the animals were sacrificed, 48 of 50 meshes fixed with FS alone were insufficiently affixed to the abdominal wall, which may have resulted in hernia recurrence in a hernia model. The chronic fixation strength was greater for all the mesh types with either suture+FS or tacks only than with FS alone (p≤0.0005). The chronic fixation strength was greater with suture+FS than with tacks for Proceed and ProLite Ultra (p≤0.013). Neither mesh area nor adhesion tenacity differed significantly with any mesh/fixation method combination.

CONCLUSIONS

In a chronic rabbit model of LVHR, fixation strength with FS alone was inadequate for selected nonabsorbable and absorbable barrier-coated meshes. The acute and chronic fixation strengths of suture+FS were equivalent or superior to the fixation strength of tacks alone. Using a combination of suture and FS for mesh fixation in LVHR may provide adequate fixation while decreasing postoperative pain due to spiral titanium tacks. In this preclinical series, mesh secured to the peritoneal surface by FS alone may have led to early recurrence.

Comparison of a new self-gripping mesh with other fixation methods for laparoscopic hernia repair in a rat model

BACKGROUND

Microhooks are small structures on the surface of the Progrip (PG; Sofradim Corp) mesh to ensure its anchorage in tissue. Additional fixation is not required. The aim of this animal study was to compare the strength of incorporation, foreign body reaction, and changes in material after implantation of this novel mesh with the current fixation alternatives, namely the hernia stapler (HS) and fibrin glue (FG).

STUDY DESIGN

Forty Sprague-Dawley rats were used in this two-phase, prospective randomized study. Polypropylene meshes (Parietene light; Sofradim Corp) were positioned bilaterally on the abdominal muscle. The randomized mesh fixation groups were named HS, FG, PG, and UM (unfixed mesh). Half of the rats in each group were sacrificed and analyzed 5 days after implantation, and the second half were sacrificed and analyzed after 2 months. Measured parameters were strength of incorporation, foreign-body reaction to, and potential degradation of, mesh and fixation systems.

RESULTS

After 5 days, strength of incorporation was substantially higher for PG (3.2 N/cm(2)) and HS (2.7 N/cm(2)) compared with FG (0.9 N/cm(2)) or UM (1.5 N/cm(2)). After 2 months, PG had a much greater strength of incorporation (14.8 N/cm(2)) compared with all other groups (HS 11.7 N/cm(2); FG 11.4 N/cm(2); UM 8.7 N/cm(2)). Inflammatory reactions were considerably more severe after 5 days than after 2 months. No significant differences in foreign-body reactions were found between groups. At neither time point were signs of degradation detected by scanning electron microscopy.

CONCLUSIONS

PG demonstrated a substantially stronger strength of incorporation in muscle tissue compared with other fixation systems and is an economic alternative to HS or FG. Laparoscopic mesh placement of PG requires some practice because of the microhooks. Clinical studies will have to be performed before the value of this mesh can be established for laparoscopic application.