Quantification of Pain and Satisfaction Following Laparoscopic and Open Hernia Repair

Varying convalescence recommendations after inguinal hernia repair: a systematic scoping review

PURPOSE

The most recent international guideline on inguinal hernia management recommends a short convalescence after repair. However, surgeons' recommendations may vary. The objective of this study was to give an overview of the current convalescence recommendations in the literature subdivided on the Lichtenstein and laparoscopic inguinal hernia repairs.

METHODS

In this systematic review, three databases were searched in August 2021 to identify studies on inguinal hernia repairs with a statement about postoperative convalescence recommendations. The outcome was convalescence recommendations subdivided on daily activities, light work, heavy lifting, and sport.

RESULTS

In total, 91 studies fulfilled the eligibility criteria, and 50 and 58 studies reported about convalescence recommendations after Lichtenstein and laparoscopic repairs, respectively. Patients were instructed with a wide range of convalescence recommendations. A total of 34 Lichtenstein studies and 35 laparoscopic studies recommended resumption of daily activities as soon as possible. Following Lichtenstein repairs, the patients were instructed to resume light work after median 0 days (interquartile range (IQR) 0-0), heavy lifting after 42 days (IQR 14-42), and sport after 7 days (IQR 0-29). Following laparoscopic procedures, the patients were instructed to resume light work after median 0 days (IQR 0-0), heavy lifting after 14 days (IQR 10-28), and sport after 12 days (IQR 7-23).

CONCLUSION

This study revealed a broad spectrum of convalescence recommendations depending on activity level following inguinal hernia repair, which likely reflects a lack of high-quality evidence within this field.

Ultra-minimally invasive surgery in gynecological patients: a review of the literature

In the last decade, Ultra-minimally invasive surgery (UMIS) including both minilaparoscopic (MH) and percutaneous (PH) endoscopic surgery achieved widespread use around the world. Despite UMIS has been reported as safe and feasible surgical procedure, most of the available data are drawn from retrospective studies, with a limited number of cases and heterogeneous surgical procedures included in the analysis. This literature review aimed to analyze the most methodologically valid studies concerning major gynecological surgeries performed in UMIS. A literature review was performed double blind from January to April 2021. The keywords ‘minilaparoscopy’; ‘ultra minimally invasive surgery’; ‘3 mm’; ‘percutaneous’; and ‘Hysterectomy’ were selected in Pubmed, Medscape, Scopus, and Google scholar search engines. PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) guidelines were followed for the drafting of the systematic review. The systematic literature research provided 298 studies, of which 9 fell within the inclusion criteria. Two hundred ninety-six total patients were included, 148 for both PH and MH groups. Median age (48 years), BMI (24 kg/m²), OT (90 min), EBL (50 ml), time to discharge (1 day), self scar evaluation (10/10), and VAS (3/10) were reported. The most frequent intraoperative complication in both the PH and MH groups was surgical bleeding. The UMIS approaches were feasible and safe even for complex gynecological procedures. Operative times and complications were superimposable to the “classical” minimally invasive approaches reported in the literature. The reported results apply only to experienced surgeons.

Evaluation of long‐term chronic pain and outcomes for unilateral vs bilateral circular incision transabdominal preperitoneal inguinal hernia repair

Aim

This study has two aims: to evaluate long‐term chronic pain and complications after circular incision transabdominal preperitoneal inguinal hernia repair (C‐TAPP) and compare outcomes of unilateral and bilateral inguinal hernia cases.

Methods

A postoperative patient questionnaire was used to evaluate pain and complications in 1546 patients who underwent C‐TAPP for simple inguinal hernia. Questions concerned satisfaction with surgery, pain at rest, pain at movement, mesh discomfort on a 10‐point scale, and complications, such as recurrence. Patients were classified into unilateral (U Group) and bilateral (B Group) groups, and propensity score matching was performed to compare long‐term chronic pain and complications.

Results

The questionnaire return rates were 77.5% (1034 cases) and 79.9% (135 cases) in unilateral and bilateral cases. The frequency of moderate‐to‐severe (≥4 points) pain at rest, pain at movement, and mesh discomfort were 3.2%, 3.6%, and 4.5%, respectively. After propensity score matching, no significant differences in pain at rest (P = .726), at movement (P = .712), or mesh discomfort (P = .981) were detected between the U and B groups. Postoperative complications occurred in 2.1% of all patients, and the recurrence rate was 0.3%. In the post‐match comparison, no differences in complications with Clavian‐Dindo classification ≥III (U Group 0.7%, B Group 2.1%, P = .622) were detected.

Conclusion

C‐TAPP, which focuses on the layered structure, showed acceptable results for long‐term chronic pain. Bilateral cases did not have worse pain or complications compared to unilateral cases.

Significance of umbilical trocar size and intra-abdominal pressure on postoperative pain after transabdominal preperitoneal repair for inguinal hernia

INTRODUCTION

Laparoscopic inguinal hernia repair is reported to be associated with lower postoperative pain than open repair. However, in the actual clinical setting, some patients experience relatively severe pain. This study aimed to elucidate surgical factors that affect pain after transabdominal preperitoneal (TAPP) repair.

METHODS

We evaluated 199 patients who underwent elective TAPP for inguinal hernia from 2014 to 2019 in Heisei Memorial Hospital. The umbilical trocar size was changed from 12 to 5 mm from October 2017. The pneumoperitoneum intra-abdominal pressure was changed from 10 to 8 mmHg from 2019. Postoperative pain scores and analgesics were compared between patients who were grouped according to trocar size and intra-abdominal pressure, as well as 80 patients who received open repair.

RESULTS

Patients with a 12 mm trocar had significantly higher pain than open repair patients (P < .0001). Patients with a 5 mm umbilical trocar and 8 mm Hg intra-abdominal pressure had significantly lower pain than a 12 mm trocar (P = .025) and did not significantly differ with pain after open repair. Analgesic use significantly decreased in patients using a 5 mm trocar than 12 mm (P = .002).

CONCLUSION

Umbilical trocar size and pneumoperitoneum intra-abdominal pressure were significantly associated with post-TAPP pain. Using a 5 mm umbilical trocar and 8 mm Hg intra-abdominal pressure achieved pain levels as comparatively low as open repair.

Return to outdoor walking, car driving, and sexual activity following elective inguinal hernia repair: surgeons' perspective versus patients' reality

PURPOSE

To determine the time to resumption of outdoor walking, car driving, sports, and sexual activity following elective inguinal hernia repair, and to reveal if there are differences between surgeons' recommendations and patients' real return times.

METHODS

A questionnaire including questions about recommendations to hernia patients for times to resume outdoor walking ability without assistance, driving and sexual intercourse after an elective inguinal hernia repair was sent to surgeons. Also, a short questionnaire was sent to patients who had undergone elective inguinal hernia repair to search the exact times for resuming these physical activities.

RESULTS

Surgeons' thoughts and recommendations to their patients varied significantly. The range of recommendations were same day to 20 days for outdoor walking, and same day to 3 months both for driving and sexual intercourse. Patients' actual resumption of postoperative activities were 1-14 days for outdoor walking, 1 day to 3 months for driving, and 1 day to 2 months for sexual intercourse. When the answers from the two questionnaires were compared, it was observed that the mean times for resumption of outdoor walking and sexual intercourse were significantly longer in the patients' lives than recommended by the surgeons. Patients ≥ 60 years were able to walk outside, drive, and participate in sexual activity earlier than the younger patients. Bilateral and recurrent hernia repairs caused slower resumption of different activities in comparison to primary hernias.

CONCLUSIONS

Patients reported that times for resumption of outdoor walking, driving, and sexual activity were significantly longer than those recommended by surgeons. Age, BMI, bilateral repair, and recurrent hernias were found to be factors affecting return time to different activities.

Laparoscopic inguinal hernia repair by modified peritoneal leaflet closure: Description and initial results in children

INTRODUCTION

Inguinal hernias are common in infants and children. While the gold standard for hernia repair in the pediatric period has been via an open inguinal incision with dissection and high ligation of the hernia sac, over the past two decades laparoscopic herniorrhaphy has increased in popularity. The advantages of laparoscopy include decreased post-operative pain, improved cosmetic results, ability to easily assess the contralateral side for an open internal inguinal ring, and decreased risk of metachronous hernias. Herein, we describe a modified laparoscopic herniorrhaphy using a peritoneal leaflet closure and report our operative experience with intermediate-term results.

METHODS

We retrospectively reviewed our IRB-approved registry for all children who underwent initial laparoscopic herniorrhaphy at our tertiary care center over a 2.5-year period. All surgeries were performed by a single surgeon using a technique we have termed the peritoneal leaflet closure. This technique involves incising the peritoneum circumferentially around the open internal ring and developing peritoneal leaflets which are then closed together over the ring with a running non-absorbable barbed stitch (Figure). Intraoperative findings and complications, operative times, and post-operative complications were reviewed for all children.

RESULTS

A total of 50 initial laparoscopic hernia repairs (4 bilateral, 42 unilateral) were performed in 46 children (43 boys, 3 girls) at a median age of 5.9 years (range 0.5-16.7). Median operative time was 73 min (range 48-138) for unilateral and 106 min (range 104-135) for bilateral herniorrhaphy. No patient had an intraoperative complication. Two children (4%) had contralateral open rings discovered at time of surgery and underwent unplanned bilateral laparoscopic hernia repair. All patients went home on the same day as the procedure and three children (6%) had minor post-operative complaints (umbilical bulge, thigh pain, and urine holding) that all self-resolved. Thirty-nine children had follow-up data available. Intermediate-term complications occurred in two children (5%): one boy developed a contralateral hydrocele (despite a closed ring at surgery) and one boy had a hernia recurrence that required open repair. Overall, operative success with the modified peritoneal leaflet closure technique was therefore 97% (38 of 39 children with follow-up). All 37 boys who followed up had bilateral descended testes of normal size and consistency.

CONCLUSIONS

Laparoscopic herniorrhaphy using a peritoneal leaflet closure technique is safe and effective when used in infants and children to close an indirect hernia (i.e. patent processus vaginalis). No intraoperative complications occurred in this cohort and success rate was 97%.

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.

Convalescence after laparoscopic inguinal hernia repair: a qualitative systematic review

BACKGROUND

Duration of convalescence after inguinal hernia repair is of major socio-economic interest and an often reported outcome measure. The primary aim was to perform a critical analysis of duration of convalescence from work and activity and secondary to identify risk factors for unexpected prolonged convalescence after laparoscopic inguinal hernia repair.

METHODS

A qualitative systematic review was conducted. PubMed, Embase and the Cochrane database were searched for trials reporting convalescence after laparoscopic inguinal hernia repair in the period from January 1990 to January 2016. Furthermore, snowball search was performed in reference lists of identified articles. Randomized controlled trials and prospective comparative or non-comparative trials of high quality were included. Trials with ≥100 patients, >18 years of age and manuscripts in English were included. Scoring systems were used for assessment of quality.

RESULTS

The literature search identified 1039 papers. Thirty-four trials were included in the final review including 14,273 patients. There was overall a large variation in duration of convalescence. Trials using non-restrictive recommendations of 1-2 days or "as soon as possible to return to all activities" reported overall a shorter duration of convalescence compared with trials not using recommendations for convalescence. Strenuous physical activity at work, strenuous leisure activity and patients with expectations of a prolonged period of convalescence may be risk factors for prolonged convalescence extending more than a few days after laparoscopic inguinal hernia repair.

CONCLUSIONS

Patients should be recommended a duration of 1-2 days of convalescence after laparoscopic inguinal hernia repair. Short and non-restrictive recommendations may reduce duration of convalescence without increasing risk of pain, complications or recurrence rate.

Early pain after laparoscopic inguinal hernia repair. A qualitative systematic review

BACKGROUND

Early post-operative pain after laparoscopic groin hernia repair may, as in other laparoscopic operations, have its own individual pain pattern and patient-related predictors of early pain. The purpose of this review was to characterise pain within the first post-operative week after transabdominal pre-peritoneal repair (TAPP) and total extraperitoneal repair (TEP), and to identify patient-related predictors of early pain.

METHODS

A qualitative systematic review was conducted. Pubmed, Embase, CINAHL, and the Cochrane database were searched for studies on early pain (first week) after TAPP or TEP.

RESULTS

We included 71 eligible studies with 14,023 patients. Post-operative pain is most severe on day 0 and mainly on a level of 13-58 mm on a visual analogue scale and decreases to low levels on day 3. There seems to be no difference in pain intensity and duration when TEP and TAPP are compared. Deep abdominal pain (i.e. groin pain/visceral pain) dominates over superficial pain (i.e. somatic pain) and shoulder pain (i.e. referred pain) after TAPP. Predictors of early pain are young age and pre-operative high pain response to experimental heat stimulation. Furthermore, evidence supported early pain intensity as a predictive risk factor of chronic pain after laparoscopic groin hernia repair.

CONCLUSION

Early pain within the first week after TAPP and TEP is most severe on the first post-operative day, and the pain pattern is dominated by deep abdominal pain. Early post-operative pain is most intense in younger patients and can be predicted by pre-operative high pain response to experimental heat stimulation.

Comparison of three separate antiadhesive barriers for intraperitoneal onlay mesh hernia repair in an experimental model

Background

Adhesion formation is a common adverse effect in intraperitoneal onlay mesh (IPOM) surgery. Different methods of adhesion prevention have been developed, including coated meshes and separate antiadhesive barriers (SABs). In this study one type of mesh was tested with different SABs, which were fixed to the sutured mesh using fibrin sealant. The primary aim was to compare adhesion prevention between different SABs. Secondary aims were the assessment of tissue integration and evaluation of SAB fixation with fibrin sealant.

Methods

Thirty-two rats were randomized to one of three treatment groups (SurgiWrap®, Prevadh® and Seprafilm®) or a control group (no SAB). Animals were operated on with an open IPOM technique (8 per group). One macroporous polypropylene mesh per animal (2 × 2 cm) was fixed with four non-absorbable sutures. An antiadhesive barrier of 2·5 × 2·5 cm was fixed with fibrin sealant. After 30 days, adhesion formation, tissue integration, seroma formation, inflammation and vascularization were evaluated macroscopically and by histology.

Results

Prevadh® and Seprafilm® groups showed a significant reduction in adhesion formation compared with the control group. Tissue integration of the mesh was reduced in these groups. Fibrin sealant fixed the SAB to the mesh securely in all groups.

Conclusion

Prevadh® and Seprafilm® are potent materials for the reduction of adhesion formation. A potential relationship between effective adhesion prevention and impaired tissue integration of the implant was observed. Fibrin sealant proved an excellent agent for SAB fixation.

Lightweight mesh and noninvasive fixation: an effective concept for prevention of chronic pain with laparoscopic hernia repair (TAPP)

BACKGROUND

This prospective study aimed to evaluate the impact of transabdominal preperitoneal patch plasty (TAPP) with implantation of a lightweight mesh (<50 g/m²) fixed by fibrin glue on the occurrence of chronic pain and sexual dysfunction in hernia patients.

METHODS

Patients were examined before TAPP, early and late postoperatively. The primary end point of the study was pain-related functional impairment 6 months after the operation as assessed by the validated assessment scale (AAS). For the first time, patients without any pain before surgery were compared with patients experiencing preoperative pain. Furthermore, the patients were asked about the frequency and extent of impairment in their sexual activities. A secondary end point was chronic pain in relation to the type of mesh fixation (glue vs clip).

RESULTS

The study criteria was met by 276 patients. The dropout rate after 6 months was 2.9%. Mesh fixation was performed with glue for 212 patients and with clip for 64 patients. Chronic pain with significant impairment of daily activities was experienced by 42% of patients before the operation, which decreased to 8.3% after TAPP. The mean level of impairment, assessed by AAS, decreased from 11.2 preoperatively to 2 postoperatively (p < 0.001). The clip patients had more pain on days 4 and 7 postoperatively (p < 0.05) but not later. A majority of the patients (78%) experiencing pain before the operation were pain free 6 months after TAPP. New pain was seen in 7.4% of the patients but was only mild (numeric analog scale [NAS], 1-3; 78% of patients) or moderate (NAS, 4-6; 11% of patients). The only patient with severe pain (NAS, 8) had a clip fixation. Frequency of sexual dysfunction decreased after TAPP (p < 0.05).

CONCLUSION

The TAPP procedure with implantation of a lightweight mesh fixed by glue is a highly effective option for preventing chronic pain in inguinal hernia repair. Fibrin fixation seems superior to clip fixation during the early postoperative period. However, for confirmation of results, a randomized study is recommended.

A comparison of a bovine albumin/glutaraldehyde glue versus fibrin sealant for hernia mesh fixation in experimental onlay and IPOM repair in rats

BACKGROUND

Research in hernia repair has targeted new atraumatic mesh fixation to reduce major complications such as chronic pain and adhesion formation. The efficacy and safety of two surgical adhesives, viz. Artiss® (FS, fibrin sealant containing 4 IU thrombin) and Bioglue® (AGG, bovine serum albumin/glutaraldehyde glue), were evaluated in this study. Primary study endpoints were tissue integration, dislocation, and adhesion formation. Foreign-body reaction formed the secondary study endpoint.

METHODS

Twenty-four polypropylene meshes (VM, Vitamesh®) were randomized to four groups (n = 6): two groups of onlay hernia repair (two meshes per animal) with mesh fixation by FS (O-FS) or by AGG (O-AGG), and two groups of IPOM repair (one mesh per animal) with mesh fixation by four sutures and FS (I-FS) or AGG (I-AGG). Eighteen rats underwent surgery. Follow-up was 30 days. Tissue integration, dislocation, seroma formation, inflammation, adhesion formation, and foreign-body reaction were assessed.

RESULTS

Meshes fixed with FS (O-FS, I-FS) showed good tissue integration. No dislocation, seroma formation, or macroscopic signs of inflammation were detectable. Adhesion formation of I-FS was significantly milder compared with I-AGG (P = 0.024). A moderate foreign-body reaction without active inflammation was seen histologically in O-FS and I-FS groups. Samples fixed with AGG (O-AGG, I-AGG) showed extensive scar formation. No dislocation and no seroma formation were observed. All of these samples showed moderate to severe signs of inflammation with abscess formation in the six meshes of O-AGG. Histology underlined these findings.

CONCLUSIONS

The fibrin sealant adhesive showed very good overall results of the primary and secondary outcome parameters. FS is a recommendable atraumatic fixation tool for the surgical onlay technique. AGG provides high adhesive strength, but shows low biocompatibility. Persisting active inflammation was seen in both the O-AGG and I-AGG groups, not favoring its use for these indications.

Laparoscopic inguinal hernia repair: a new approach

OBJECTIVE

Over a 5-year period, patients, who underwent laparoscopic total peritoneum intraperitoneal onlay mesh (TPIPOM) hernioplasty were retrospectively examined. The investigation focused on technique feasibility and complication incidence, in particular complication related to this novel hernia therapy.

PATIENTS AND METHODS

Between January 2002 and March 2003, 54 patients were treated with TPIPOM hernioplasty.

RESULTS

Mean overall surgery time was 25.45 +/- 5.2 minutes, and hospital stay was 3.8 +/- 1.3 days. Mean follow-up time was 72.4 +/- 3.1 (range, 69-84) months. The overall recurrence rate was 1.8% (1/54). Complications, in the form of persistent neuralgia, osteitis pubis, subcutaneous hematoma, numbness, or vascular injury, did not occur. All patients returned to usual activities of social life, hobbies, looking after the house, and work by 1 month after surgery.

CONCLUSIONS

On the basis of our initial experience, laparoscopic TPIPOM hernioplasty is feasible, effective, and easy to perform by experienced surgeons, with good results.

Pain following the repair of an abdominal hernia

Pain and other types of discomfort are frequent symptoms following the repair of an abdominal hernia. After 1 year, the incidence of light to moderate pain following inguinal hernia repair is as high as 10% and 2% for severe disabling chronic pain. Postoperative chronic pain not only affects the individual patient, but may also have a great impact on relatives and society, and may be a cause of concern for the responsible surgeon. This paper provides an overview of the anatomy, surgical procedures, and disposing factors (age, gender, ethnicity, genotype, previous hernia repair, pain prior to surgery, psychosocial characteristics, and surgical procedures) related to the postoperative pain conditions. Furthermore, the mechanisms for both acute and chronic pain are presented. We focus on inguinal hernia repair, which is the most frequent type of abdominal hernia surgery that leads to chronic pain. Finally, the paper provides an update on the diagnostic and treatment routines for postoperative pain.

Laparoscopic ventral hernia meshplasty with "double-breasted" fascial closure of hernial defect: a new technique

BACKGROUND

Absence of recurrence, seroma, and pain eludes the laparoscopic surgeon managing ventral and incisional hernias. Multifactorial etiology (i.e., obesity, comorbidity, and dyscollagenemia) is a challenge. Surgeons have risen to this challenge by providing laparoscopic ventral hernia repair (LVHR). Stability of mesh in a standard LVHR is attributed to Pascal's Principle (PP). PP, based upon concentration of forces at the point of least resistance, has been classically applied in hydraulic jacks to move large masses. Application of PP in LVHR is thus misplaced where the hernial defect becomes a point of concentration of intra-abdominal forces. This makes the mesh inherently unstable. For a stable mesh aided by PP, benefits of defect closure needed to be explored.

METHODS

Between January 2000 and December 2004, 30 nonsmoker patients with incisional, primary ventral, and recurrent ventral hernias were operated on. Laparoscopic closure of the defect augmented with intraperitoneal onlay mesh (IPOM), as done in standard LVHR, was preformed.

RESULTS

Thirty patients with 34 defects of a mean "closed defect" length of 5.7 cm (range, 3-10) were operated on. Mean operative time was 90 minutes (range, 75-110). There were no conversions, visceral injury, postoperative visible bulge, or seroma. No painkiller except Paracetamol was required. There was no recurrence in a mean follow-up of 58 months (range, 26-84). Restored abdominal contour was achieved by all the patients.

CONCLUSION

Closure of hernial defect augmented with IPOM is a safe, patient friendly, and scientific way of doing LVHR.

The assessment of quality of life in a trial on lightweight mesh fixation with fibrin sealant in transabdominal preperitoneal hernia repair

BACKGROUND

Chronic pain is a major concern in open and laparoscopic hernia repair. Study groups have adopted a variety of tools to assess postoperative (postOP) pain and quality of life (QoL). Unfortunately, modifications of existing tests and self-designed questionnaires are common, yielding unvalidated results and making comparison of data difficult. The aim of this study was to assess the QoL in transabdominal preperitoneal mesh repair (TAPP) with fibrin sealant (FS) for lightweight mesh fixation, applying the standardised Short Form 36 (SF36) questionnaire in its unmodified design. The SF36 has already been validated and implemented in a large number of studies. In this trial the physical-health-component summary measure (PHM), summarising the physical health-related scales, served as the primary outcome parameter.

MATERIALS AND METHODS

After informed written consent was obtained, TAPP with fibrin mesh sealing was performed in 11 non-selected consecutive patients by a single surgeon. A direct control group (e.g. TAPP with staples) was not enrolled, because a favourable change in the QoL in patients subjected to the mesh sealing approach was the tested hypothesis and not the comparison of techniques. The macroporous mesh (TI-Mesh, GfE, Germany) was fixed with 1 ml of FS (FS, Tisseel, Tissucol, Baxter Biosciences, Austria), and the QoL and pain were assessed preoperatively and 1 year postOP using the SF36 survey and the visual analogue score (VAS).

RESULTS

After 12 months, recurrences or complications were observed. The analysis of the unmodifed SF36 revealed a highly significant improvement in the PHM, based on significant changes of all physical-health-related scales. The scale 'social functioning' (SOCIAL), which belongs to the mental-health-related scale, had also significantly improved. The VAS was significantly reduced after 1 year.

CONCLUSIONS

Despite a small number of patients (n = 11), a strikingly significant improvement in physical health and reduction of pain was detected with the unmodified SF36 and the VAS 1 year after TAPP repair with fibrin-sealed lightweight meshes. We suggest the use of the unmodified SF36 for QoL in hernia repair in order to assess all aspects of recovery (physical and mental) and to facilitate comparison of data.

Experience of laparoscopic hernia repair in a laparoscopically oriented unit of a large community hospital

We describe a consecutive series of 258 laparoscopic inguinal hernia repairs in 189 patients from January 1997 to December 2004. Early results, complications, and follow-up were collected prospectively. Patients were followed in the outpatient clinic and contacted by phone at the time of this review. Three trocars were employed. The polypropylene mesh was inserted through the periumbilical trocar and fixed in the properitoneal space using titanium clips. There were no conversions and the mean operative time was 88 minutes (including bilateral cases). We had no major intraoperative accidents, and only 12 minor postoperative complications (4 urinary retentions, 6 seromas, and 2 cases of prolonged pain). Walking, hospital discharge, and return to activities were prompt, with a mean hospital stay of 1.7 days, and an average time of absence from work of 16 days. There have been 11 (4%) documented recurrences during long-term follow-up (mean, 62 months). The technique appears safe and efficacious even in a community hospital with a large laparoscopic experience.

Lightweight Partially Absorbable Monofilament Mesh (Polypropylene/Poliglecaprone 25) for TAPP Inguinal Hernia Repair

OBJECTIVE

An ideal mesh should produce slight foreign-body reactions and be compatible with the human organisms. Studies focusing on these aspects indicate that the use of mesh with less nonabsorbable material may reduce postoperative complications, insofar the web structure and its rigidity play an important role in compatibility. We evaluated retrospectively the patients of the past 1 year, who underwent laparoscopic transabdominal preperitoneal (TAPP) hernioplasty (without the use any trocar and/or instrument of 10 mm in diameter) focusing attention on the feasibility of the technique and on the incidence of complications, especially those possibly related to the new type of mesh implanted.

METHODS

Between June 2004 and September 2005, 76 patients have been operated on by using TAPP hernioplasty (bilateral or unilateral) without any 10 mm instrument/optic/trocar, and by applying a lightweight composite mesh fixed by "glues" (fibrin sealant and N-butyl 2-cyanoacrylate).

RESULTS

The mean overall operative time was 55.57 (+/-15.2) minutes. All the procedures have been performed on a day surgery basis. We have registered any kind of major or minor morbidity (early or late), relapse, prosthesis rejection, and/or infection. We have registered no severe pain at 10 days; whereas a mild pain is still reported in 10.5% of our cases at a 3-month follow-up. The mean follow-up is 12.4 (+/-5.1; range 4 to 19) months.

CONCLUSIONS

On the basis of this our initial experience, TAPP hernioplasty with a lightweight composite mesh is feasible, effective, and easy to perform by experienced hands, with good results. The well-known characteristics of a mini-invasive and gentle approach, together with the type of mesh implanted and its fixation of related glues, might explain the encouraging results of our experience.

A rare complication following laparoscopic TEP repair: case report and discussion of the literature

Transabdominal pre-peritoneal and totally extra-preperitoneal (TEP) are common laparoscopic techniques used to repair inguinal hernias. With better equipment and techniques for creation of pneumoperitoneum serious complications are now infrequent. However, complications from these techniques that are beyond the control of the surgeon do occur. This report details a rare complication related to infection. It is the first such documented complication of TEP hernia repair. There follows a short literature review of rare complications of laparoscopic hernia repair. Surgeons should familiarize themselves with these potential pitfalls for a number of reasons including, counseling when obtaining consent and heightened awareness for infrequent complications during postoperative follow-up.

Preliminary Experience Using Fibrin Glue for Mesh Fixation in 250 Patients Undergoing Minilaparoscopic Transabdominal Preperitoneal Hernia Repair

PURPOSE

Fibrin glue for mesh fixation has been proposed to prevent the risk of nerve injury in inguinal hernia repair. We retrospectively evaluated a series of 250 patients who underwent minilaparoscopic transabdominal preperitorneal (miniTAPP) hernioplasty (using trocars, optics, and instruments <10 mm in diameter) in whom mesh fixation was achieved using 2 mL of fibrin glue. We considered the feasibility of the technique and the incidence of complications, especially those possibly related to mesh fixation. We also compared the results with an earlier series of 245 patients in whom tacks were used to fix the mesh.

MATERIALS AND METHODS

Between April 2004 and November 2005, 250 patients underwent bilateral or unilateral miniTAPP hernioplasty with instruments, optics, and trocars smaller than 10 mm and meshes fixed by fibrin glue.

RESULTS

The mean overall operative time was 52.25 +/- 15.2 min. All the procedures were done as day surgeries. We registered one intraoperative bladder lesion and 15 cases of seroma. There were no relapses, prosthesis rejection, or infection. The mean follow-up was 13.2 +/- 6.1 months (range, 5-24 months).

CONCLUSION

On the basis of our initial experience, miniTAPP hernioplasty with a fibrin glue is feasible, effective, and easy to perform in experienced hands, with good results without higher risk of recurrence. In addition, the fibrin fixation method seems to decrease postoperative neuralgia and reduced the incidence of postoperative seromas and hematomas.

Analysis of the SAGES Outcomes Initiative groin hernia database

BACKGROUND

In 1999, the Society of American Gastrointestinal Endoscopic Surgeons (SAGES) introduced the SAGES Outcomes Initiative as a way for its members to track their own outcomes. It contains perioperative and postoperative data on nearly 20,000 operations. This report provides a descriptive analysis of the groin hernia database.

METHODS

The SAGES Outcomes Initiative database was accessed for all groin hernia cases from September 1999 to February 2005. The data from the preoperative, intraoperative, and postoperative entries were summarized. These data are purely descriptive and no statistical analysis was done.

RESULTS

The hernia registry contains 1,607 entries, with 1,070 follow-up entries. Males comprised 85% of patients, 63% were employed, 62% had at least one comorbidity, with 84% ASA class I or II. Primary, unilateral hernia accounted for 86% of cases, whereas 14% were recurrent, 11% bilateral, 6% incarcerated, and 3% required emergency repair. The operating surgeon was the attending surgeon in 83% of cases. Anesthetic techniques were general anesthesia in 74% of cases, regional in 7%, and local in 34%, with only 16% of cases local only. Most patients had symptomatic hernias and symptoms were improved in more than 95% of patients. Most repairs were open, although 45% were endoscopic. The most frequently cited postoperative event was significant bruising (6%), with more than 99% of complications being class I or II. More than 95% of patients were able to return to work by the first postoperative visit. Patients who underwent endoscopic repair were reported to have fewer days of narcotic use than patients undergoing open repairs (0 vs 3).

CONCLUSIONS

First analysis of the SAGES Outcomes Initiative groin hernia database demonstrates that (a) this is one of the largest prospective; voluntary hernia registries; (b) missing data are infrequent; and (c) the data are similar to published data from national, mandatory registries and randomized trials. Although the SAGES Outcomes Initiative is a voluntary registry, initially designed for surgeon self-assessment, and it therefore has the potential for methodological concerns inherent to voluntary registries, the findings from this first analysis are encouraging. Efforts are ongoing to simplify data entry (PDA), refine data parameters, increase surgeon participation, and determine the role of data audit and thereby the potential for clinical research.