Onlay Mesh Research Articles

P-051 OPEN ABDOMEN MANAGEMENT IN PATIENT WITH ECMO THERAPY

Abstract Management of negative pressure therapy with fascial traction mediated by inlay mesh, in the context of a patient with multiple organ failure (MOF) secondary to sepsis of abdominal origin in treatment with extracorporeal membrane oxygenation therapy (ECMO) We present the case of a 15-year-old female patient, referred to a hospital after continuous consultations in a primary care center. She refers abdominal pain located in the right iliac fossa of 72 hours of evolution. Blood analysis with high infectious parameters, abdomen on a table and scanner compatible with acute appendicitis complicated by perforation. Urgent surgical intervention, where purulent peritonitis was observed in the four quadrants, the abdomen was kept open with NPT. In a situation of MOF, the need for high-dose noradrenaline and acute respiratory failure. During intubation, 2nd pneumothorax due to barotrauma. Given early deterioration, ECMO therapy was started. After completion of treatment, decreased intra-abdominal pressure and no restrictive respiratory compromise. Progressive fascial traction, using inlay mesh for 18 days until complete closure, using 2/0 monofilament suture, small bites technique, 4:1 ratio and placement of wide-pore, onlay polypropylene mesh. Partial dehiscence of the surgical wound as the only complication, NPT at 80mm Hg with definitive closure was prescribed. Satisfactory evolution one year after the intervention. After our experience with this case, we can conclude that NTP in the open abdomen with the help of facial traction mesh, in patients with ECMO therapy in a situation of septic shock, may be an adequate alternative for definitive closure of the abdominal wall.

P-015 PREVENTION OF INCISIONAL HERNIA WITH ONLAY MESH IN LOOP ILEOSTOMY CLOSURE

Abstract Aim The primary aim of the study is to determine the efficacy of the placement of an onlay mesh for prevention of incisional hernia after loop ileostomy closure Material & Methods This is a multicentric, prospective, randomized controlled trial including patients operated on for loop ileostomy closure after a prior rectal resection for rectal cancer. In the control group (C), after the digestive tract is reconstructed, the closure of the abdominal wall is performed by a 4:1 ratio running suture of polydioxanone. Patients in the study group (M) had the same closure procedure performed, and a light polypropilene mesh is placed onlay. The presence of incisional hernia was evaluated by physical examination at scheduled clinical visits and radiologically by an abdominal CT scan performed at the end of follow-up (6 month after surgery) Results 58 patients were included (27 in control group and 31 in mesh group) . Both groups had similar characteristics, except for a higher rate of smokers in the control group (48% vs 6%). During the follow-up, 5% of patients developed an incisional hernia (Group M 0 vs Group C 11%). At 30 days of follow-up 5 (16%) surgical site occurrences were detected in Group M for 4 (15%) in Group C. Conclusions A low incidence of IH after ileostomy closure is detected. All the IH were presented in the control group with no stadistically significant differences between groups. Larger trials with longer follow-up are needed to confirm the results.

OC-031 TROCAR SITE INCISIONAL HERNIA PREVENTION BY ONLAY MESH PLACEMENT, NOT WHAT WAS EXPECTED

Abstract Aim The prevalence of Trocar site incisional hernia (TSIH) might be as high as 30%, due to this reason is paramount to find a better closure technique. Our aim is to test the TSIH preventive effect of the placement of an onlay mesh versus the standard fascial closure at the umbilical trocar site closure. Material&Methods We designed a Two-Center Randomized Controlled Trial where adult participants presenting for elective laparoscopic cholecystectomy, were allocated into 2 groups (Prosthesis and Control). The Hasson technique was the pneumoperitoneum creation technique. The procedure in the Prosthesis group consisted in the complete closure of the umbilical vertical section of the aponeurosis by single 0 Polydioxanone stitches, a 2cm onlay plane dissection, the placement of a lightweight, large-pore synthetic mesh and its fixation applying cyanoacrylate glue, subcutaneous stitches, and skin staplers. The Control group aponeurosis was closed by single stitches of Polydioxanone followed by skin staplers. An ultrasound scan was performed at 12 postoperative months. Results At 12-month control, a 41.7% incidence of TSIH was recorded in the Prosthesis group while 28.5% in the control group. 6 patients developed a superficial wound infection at the umbilical port site in the Prosthesis group, and none in the Control group. 5 of the patients had to be operated for mesh removal as they developed 4 chronic infections and 1 seroma with bad wound pain control. Conclusions The preliminary results of the study show no benefit in the Prosthesis group for the prevention of TSIH and presented with a greater number of complications.

P-039 INITIAL EXPERIENCE IN ROBOTIC APPROACH IN ABDOMINAL WALL SURGERY

Abstract Aim To evaluate the results of our robotic hernia repair case series. Material and Methods Prospective and observational study on hernia repair cases operated with a robotic approach. We have performed a descriptive analysis of demographic and surgical variables and short-term complications. Results From October 2021 to January 2023, 64 robotic interventions, including 39 men (60.1%) and 25 women (39.1%). Mean age is 60,66 years (+/- 11,72). Mean Body Mass Index (BMI) is 30,70kg/m2 (+/- 5.58). Interventions: 3 unilateral inguinal hernia (2 recurrents), 16 bilateral inguinal hernia (9 recurrents), 13 primary ventral hernias, 23 incisional hernia, 8 mixed hernias and 1 parastomal hernias. Conversion rate is 1,6% (one case). Techniques in inguinal hernia: 22 rTAPP (Transabdominal Preperitoneal) (85,91min +/- 31.90). In unilateral hernia the mean of intervention time is 50min +/- 25,98 and in bilateral hernia is 95,31min +/- 28,83. Techniques in abdominal hernia: 2 iPOM+ (Laparoscopic Intraperitoneal Onlay Mesh) (127.50 min +/- 3.54), 1 rTAPP (90min), 1 rRives (260min), 28 TARUP (Robotic Transabdominal Retromuscular Umbilical Prosthetic) (135.50 min +/- 54.02), 2 eTEP (Enhanced-view Total Extraperitoneal) (165 min +/- 49.48), 4 rTAR (Transversus Abdominis Muscle Release) (122.50 min +/- 51.07), 2 rLIRA (Laparoscopic Intracorporeal Rectus Aponeuroplasty) (147.50 min +/- 74.25) and 1 Pauli (155 min). Complications: 21 SSO (surgical site occurrence) (32,81%), 2 SSI (surgical site infection) (3.1%), 1 recurrence (1.6%). Conclusions Robotic surgery facilitates the approach of complex incisional hernias and the performance or retromuscular techniques. It doesn`t provide clear benefits in inguinal hernia.

V-038 ENDOSCOPIC SPIEGEL'S HERNIA REPAIR BY TOTALLY EXTRAPERITONEAL EXTENDED ETEP APPROACH

Abstract Background Spiegel's hernia is a rare form of spontaneous abdominal anterolateral hernia (0.12–2% of abdominal hernias) seen in people between 40 and 70 years old. It is often found at the weak point located at the intersection between the semilunar line and the lateral end of the arched line. Traditionally, it was repaired with an open approach, currently we have multiple minimally invasive techniques (enhanced-view total extraperitoneal eTEP, transabdominal preperitoneal, intraperitoneal onlay mesh repair…) that offer less pain, faster recovery and shorter hospital stay as well as less complications risk and better cosmetic outcomes. None of these has proven superior to others but the eTEP approach requires an extensive learning curve. Aim To show a video of an eTEP approach to Spiegel's hernia. Methods We report the case of a 51 year old woman, without previous abdominal surgery, who consulted for a lump, manually reducible, in the right iliac fossa which appeared 2 years ago, and became progressively painful. She was diagnosed pre-surgically with abdominal tomography and was scheduled electively for an eTEP repair. Results After hernia sac reduction and tension-free closure of the defect with barbed suture 0, 15×15cm polypropylene mesh is placed. Conclusion Spiegel's hernia is an infrequent type of abdominal wall defect and several techniques have been developed. Adequate selection of patients is important to identify the most suitable approach for each one. The eTEP approach allows working in a large extraperitoneal space and has been demonstrated to be safe and effective although a demanding procedure.

OC-012 NATIONWIDE ANALYSIS OF SHORT-TERM OUTCOMES AFTER LAPAROSCOPIC IPOM VS. ROBOT-ASSISTED RETROMUSCULAR REPAIR OF SMALL TO MEDIUM VENTRAL HERNIA

Abstract Aim With the introduction of a robot-assisted approach, retromuscular mesh placement is technically more feasible compared to laparoscopic IPOM, with potential gains for the patient, including avoidance of painful mesh fixation and intraperitoneal mesh placement. We aimed to examine the short-term outcomes after laparoscopic intraperitoneal onlay mesh (IPOM) compared to robot-assisted retromuscular repair of small to medium sized ventral hernia. Material & Methods This was a nationwide cohort study of all patients undergoing either laparoscopic IPOM or robot-assisted retromuscular repair of a ventral hernia with a horizontal fascial defect <7 cm in the period 2017 to 2022. Outcomes included postoperative hospital length of stay, 90-day readmission, and 90-day operative reintervention, and multivariable logistic regression analysis was performed to adjust for the relevant confounder. Results A total of 2,453 patients were included for analysis, of which 389 patients underwent robot-assisted retromuscular hernia repair and 2,064 laparoscopic IPOM repair. The rate of IPOM repaired patients hospitalized more than 2 days was 4 times higher than after robotic retromuscular repair (18.2% vs. 4.5%, P < 0.001). The incidence of readmission within 90 days postoperatively was significantly higher after laparoscopic IPOM repair (10.9% vs. 6.7%, P = 0.016). There was no difference in the incidence of patients undergoing operative intervention within the first 90 days postoperatively (laparoscopic IPOM 1.8% vs. robot-assisted retromuscular 1.3%, P = 0.579). Conclusions Robot-assisted retromuscular ventral hernia repair was associated with a significantly reduced incidence of prolonged length of postoperative hospital stay and risk of 90-day compared to laparoscopic IPOM.

V-026 LAPAROSCOPIC TAPP REPAIR: IS IT REALLY FEASIBLE IN A RE-RECURRENT HERNIA?

Abstract Aim Describe a step by step laparoscopic transabdominal preperitoneal (TAPP) repair of a re-recurrent incisional lumbar hernia. Material & Methods This is the case of a 72-year-old man who had a previous traumatic right lumbar hernia initially approached by laparoscopic intra-peritoneal onlay mesh repair (IPOM) and its recurrence approached by open onlay mesh repair. CT-scan revealed a lumbar hernia on the right with a neck size of 40 mm. The hernia sac measured 65 mm and contained part of the right colon inside, without signs of incarceration nor dilated intestinal loops. According to the European Hernia Society classification for incisional abdominal wall hernias, the patient had a lateral hernia (L4 W2). Results Lateral incisional hernias are limited by the inguinal region inferiorly, the costal margin superiorly, the lateral margin of the rectal sheath medially and the lumbar region laterally. Due to their low incidence and the resulting lack of expertise in the treatment of this abdominal wall defect, surgical treatment poses a challenge- Conclusion The repair of a recurrent hernia is a daunting task, even more so of a re-recurrent one. By choosing to perform a TAPP repair, we were able to prove a laparoscopic re-do repair is feasible even faced with weakened tissues and distorted anatomy.

V-005 Robot assisted parastomal hernia repair of an ileal conduit stoma

Abstract Aim The optimal surgical treatment of a parastomal hernia after ileal conduit urinary division has yet to be determined. Data is scarce and reported recurrence rates after different approaches in parastomal hernia repair remain high. Material & Methods A 65-year-old male patient, who had a history of a radical cystectomy with an ileal conduit urinary diversion, presented with a recurrent symptomatic parastomal hernia. He had a previous repair of his parastomal hernia via an open retromuscular approach with a unilateral posterior component separation (transversus abdominis release). Results A robot assisted repair of the recurrent parastomal hernia was performed using a partial intraperitoneal onlay mesh technique (PIPOM). Intraoperatively, intraluminal Indocyanine green (ICG) was used to identify the ileal conduit loop. A closure of the defect was performed with a barbed suture whereafter the repair was reinforced with a PVDF IPST ‘Chimney’ parastomal mesh. The latter being partially covered by peritoneum. The postoperative course was uneventful, and the patient went home on postoperative day one. The patient had no complications and a well-functioning ileal conduit stoma 6 weeks after surgery. Conclusions The repair of a recurrent parastomal hernia after ileal conduit urinary division represents a surgical challenge. After a previous retromuscular approach, a robotic assisted approach using a partial intraperitoneal onlay mesh technique (PIPOM) represents a feasible technique with promising results.

P-041 3-YEAR RETROSPECTIVE ANALYSIS OF USE OF ONLAY PROPHYLACTIC MESH IN MIDLINE LAPAROTOMY FOR GASTRIC CANCER

Abstract Background Incisional hernias are a frequent complication of abdominal wall incisions, ranging from 12.8% to 69% in long-time series. Recent literature supports the use of prophylactic mesh placement to avoid long-term incisional hernias. Gastric surgery in our center is performed via midline laparotomy and prophylactic mesh placement is carried out as a usual practice. The objective of our study is to evaluate long-term results of prophylactic mesh in midline laparotomies for gastric cancer. Methods Observational retrospective analysis of all patients undergoing gastric cancer sugery via midline incision with use of a polypropliene autoadhesive prophylactic mesh, between the years 2019–2021. Outcome measures included demographics, comorbidities, wound complications, reinterventions, neoplastic recurrences and incisional hernias (diagnosed by CT scan). Results A cohort of 55 patients (80% male). Mean age 68.1 years old (41–86), BMI 25,75 kg/m2 (18.73–33). All patients operated for gastric cancer, abdominal wall closure with small bite technique (monofilament absorbable 2/0 suture) and autoadhesive onlay mesh. 72.7% distal subtotal gastrectomies. 89% elective surgery. Mean albumin in preoperative analytic 40.5 g/L. Postoperative complications: 72% Clavien-Dindo grade II, mean CCI 29 (including 4 reinterventions and 1 exitus). Mean follow-up 24.9 months: 8 (14.5%) neoplastic recurrences, 4 (7.3%) exitus for cancer progression and 3 (5.4%) incisional hernias diagnosed by CT Scan (none of them reoperated). No meshes have been removed. In a comparative study no risk factors for incisional hernia have been found. Conclusions In our setting, the use of polypropylene autoadhesive prophylactic meshes in midline incision for gastric cancer is safe and durable.

V-004 ROBOTIC PARASTOMAL HERNIA REPAIR WITH RETROMUSCULAR MESH (PAULI TECHNIQUE)

Abstract Aim Parastomal hernia is a common complication of ostomy formation. We present a case of robotic parastomal hernia repair with retromuscular mesh (Pauli technique). Material and Methods Patient was 58 years-old man and had history of anterior resection of the rectum, terminal colostomy and onlay mesh parastomal hernia repair. After 2 months of parastomal hernia repair, the patient developed a recurrence (type III, European Hernia Society Classification). Results Robotic parastomal hernia repair was performed with transabdominal approach. Firstly, a small adhesiolysis of the colon to the stoma orifice was made. Then, the peritoneum and posterior sheath of the left rectus muscle was incised. The retrorectal space was dissected. The hernia sac was incised circumferentially. TAR dissection was launched lateral to the stoma. After the development of the landing zone for the mesh, the posterior retromuscular fascia was incised lateral to the stoma. The inner orifice of stoma was repositioned. A large-pore polypropylene mesh (20×28 cm) was placed in the retromuscular space and fixed it, lateral to the ostomy orifice. Finally, the retromuscular pocket was closed by suturing the posterior fascia to the linea alba. The patient was discharged on postoperative day 4 and had no complications. After 4 months of follow-up, no hernia recurrence had been recorded. Conclusions Robotic Pauli is a technique to repair parastomal hernias that provides wide coverage of the defect and avoids leaving mesh intraperitoneally. They could provide a secure repair and prevent postoperative complications (pain or intestinal ileus). It is technically challenging but feasible.

COMPARATIVE STUDY BETWEEN ONLAY AND SUBLAY MESH REPAIR IN THE TREATMENT OF VENTRAL HERNIAS

Objectives: To compare the outcomes of Onlay and Sublay mesh repair in the treatment of ventral hernias in terms of duration of surgery and early postoperative complications like seroma, surgical site infections, ap necrosis. Design : Material and method: Observational Comparative study. From 1st Sept 2021 to Sept 30th 2022, a one prospective study was done at a rural medical college. A total of 50 patients with ventral hernias meeting the inclusion & exclusion criteria were enrolled in the study, with 25 patients in each group. Data was recorded in proformas. The data was analyzed using SPSS version 22. Out of the 50 patients enrolled in Results: the study, 25 patients underwent Sublay Mesh repair & 25 patients underwent Onlay Mesh Repair. The most common post op complication observed in our study was seroma , which was seen in 5 patients: 1 (4%) were in Sublay group and 4 (16%) in Onlay mesh repair group. Wound infection was seen in 3 cases. Out of these, 1 (4%) were in Sublay group and 2 (8%) were in Onlay group. Flap necrosis was seen in 4 cases , all belonging to Onlay group The mean duration of surgery was 67 minutes in Onlay group while the mean duration of surgery was 78 minutes in Sublay group. Our study concludes that Sublay Mesh repair is superior to Onlay Mesh re Conclusion: pair in terms of post operative complications, although associated with a longer duration of surgery

A PROSPECTIVE COMPARATIVE STUDY BETWEEN ONLAY AND RETRO-RECTUS MESH REPAIR IN VENTRAL HERNIA CASES IN A TERTIARY CARE CENTER

Ventral hernia, a commonly dealt surgical problem in clinical practice, is dened as an abnormal protrusion of a viscus or a part of the viscus through a defect or weakness in the anterior abdominal wall. Various risk factors such as old age, history of previous surgery, obesity, COPD, diabetes mellitus, smoking & alcoholism lead to the formation of ventral hernias. Mesh hernioplasty has become the gold standard in the management of ventral hernias. There are various procedures in the management of ventral hernias based on the placement of mesh. In this study, we compare the traditional onlay and retro-rectus mesh repair in ventral hernias in terms of postoperative complications, hospital stay & feasibility

The role of laparoscopic IPOM in the treatment of abdominal hernias: lesson learned after 400 surgeries using single mesh.

Abdominal wall hernias and incisional hernias are a common benign disorder affecting quality of life, potentially leading to life-threatening complications. Laparoscopic IPOM (intraperitoneal onlay mesh) approach can offer good results in selected cases. Patients who underwent laparoscopic incisional/ventral abdominal hernia repair operated with standardized technique and the same mesh, from January 2011 to December 2022, were retrospectively considered. Four hundred consecutive patients underwent laparoscopic abdominal wall repair. There were 255 ventral hernia (63%) and 145 (37%) primitive hernia (epigastric and umbilical). Mean size of the defect was 4.2 cm, W3 were 19 (4%). After a mean follow-up of 1906 days (range 45-4109), no mesh-related complications have been detected. There were 10 (2.5%) recurrences and 20 (5%) bulging. In this study we emphasized the role of patient selection and standardized technique which represents "the lesson" learned over a period of 15 years of activity. In this setting, we believe that laparoscopic approach can achieve very good results in abdominal wall repair.

Open Retromuscular Sublay Mesh Repair Versus Laparoscopic Intraperitoneal Onlay Mesh Repair for Ventral Hernias-A Randomized Control Trial

Background: The precise treatment of ventral hernias is still a topic of considerable debate. The aim of this study was to compare the methods of open retromuscular sublay versus laparoscopic intraperitoneal onlay mesh repair for ventral hernias. Methods: Following approval by the Institutional Ethics Committee, Rohilkhand Medical College and Hospital, Bareilly, 88 patients were randomly divided into two groups in 1:1 allocation ratio, each compromising 44 patients. Patients characteristics, hernia size and postoperative complications were recorded. Results: Mean operative time was significantly (p= <0.001) lower in the SUBLAY group (55.66±8.34 minutes) than in the IPOM group (68.75±10.44 minutes). The post-operative pain(VAS) was significantly (p=0.001) lower amongst patients of the IPOM group (2.36±0.61) as compared to the sublay (4.52±0.66) group. The hospital stay was significantly (p=0.001) lower among patients of the IPOM group (3.61±2.28 days) than the sublay group (6.50±1.68 days). Conclusion: Laparoscopic repair in medium- and large-sized defects is a feasible and safe approach. IPOM compared to SUBLAY significantly reduces postoperative complications and hospital stay.

Social and economic aspects of treatment of patients with medium (W2) and large (W3) postoperative ventral hernias

The article describes social and economic aspects of the treatment of patients with medium and large postoperative ventral hernias . The study was based on the results of treatment of 181 patients operated by endovideosurgical and open methods for postoperative ventral hernias . The stratification of patients was carried out on the basis of the mod ern classification of postoperative hernias of the EHS approved in the national clinical guidelines . The first main group of patients who underwent laparoscopic hernioplasty using the IPOM+ technique ( intraperitoneal onlay mesh ) consisted of 47 people . The second main group included 12 patients operated using the preperitoneal eTEP technique ( extended total extraperitoneal plasty ). The control group consisted of 122 patients with postoperative ventral hernias who underwent traditional ( open ) hernioplasty : using the techniques of onlay – 35 patients , inlay – 12, sublay – 75. Preoperative examination before planned minimally invasive hernioplasty included routine laboratory and instrumental examinations . The exceptions were patients with stage II and III obesity , as well as large postoperative ventral hernias , patients who underwent computed tomography with abdominometry . The economic efficiency of the treated patients was calculated using standardized formulas . It has been established that the complete e- TEP operation statistically reliably allows to get a significant economic effect compared to the laparoscopic IPOM surgery . IPOM endovideohernioplasty can be used in patients with a combined surgical disease of the abdominal organs in the case of simultaneous intervention . Traditional hernioplasty in patients with large and giant hernias with reduction of abdominal volume are the operations of choice and significantly increase the economic efficiency of the medical hospital . A modern surgical hospital should be able to perform any variants of both traditional and endovideosurgical hernioplasty in order to provide effective medical care and achieve optimal economic performance in any of the existing health insurance systems .

COMPARATIVE STUDY OF “ONLAY” AND “INLAY” MESH REPAIR IN TERMS OF EARLY AND LATE COMPLICATIONS IN SELECTED VENTRAL HERNIA (INCISIONAL, UMBILICAL, PARAUMBILICAL).

Objectives: This case study aimed to compare early and late complications in Onlay and Inlay mesh repair of ventral hernia in terms of demography, post op pain, seroma, bleeding, SSI, recurrence. 50 patients Methodology: operated by open mesh repair in our surgical unit of IMS & SUMH HOSPITAL in last 3 years and complications evaluated prospectively for 6 months in each patient. Two groups 25 each formed as Onlay (“O” group) and Inlay (“I”group) and clinical data recorded postoperatively for pain, seroma, bleeding, SSI, recurrence. Data was analyzed through 16th version of SPSS software. chi-square test was applied and a p-value< 0.05 was considered as signicant. There are 50 patients in the study with age ranging from Results- 20 to 60 years. Females are more than male patients. There are no differences in terms of demography and clinical characteristics. The duration of surgery in “I”group is longer. The length of hospital stay has no difference, although drains are kept longer in “I”group. Recurrence and infection are more in “O” group when compared to “I” group. Conclusion-In this study Inlay meshplasty had better out comes than Onlay meshplasty in ventral hernia repair. Retrorectus(Sublay) mesh repair has good results,but it requires more expertise, time taking, laparoscopic and robotic platform which is not available in all places

TO STUDY DIFFERENT MODALITIES OF VENTRAL HERNIA REPAIR

Aim: To Study different modalities of ventral hernia repair . Study design- This is a retrospective observational study of patients treated at Tertiary health Care Centre, Pune. Type of study- Retrospective observational study. Period of studyJuly 2020 to July 2022. Sample size -Total 110 patients included in this study out of which 30 were treated laparoscopically ,30 ventral hernias were repaired by open sublay mesh repair ,50 ventral hernia repair was done by open onlay mesh repair surgery. Conclusion: Considering least post operative complication rates laparoscopic ventral hernia repair surgery is best inspite of its higher cost ..

A visual method of establishing preperitoneal space for totally visceral sac separation in ventral hernia repair

ObjectiveTo explore a method of visually establishing preperitoneal space. In this paper, the procedure is described in detail and its safety and efficacy evaluated. MethodsA retrospective style was adopted. The clinical data of 33 patients who accepted the total visceral sac separation (TVS) procedure from December 2019 to November 2021 were collected. Observation indices included location and area of abdominal defect; surgical method and duration of operation to establish preperitoneal space and any postoperative complications; developments during follow-up. Follow-up was performed up to December 2021 using outpatient examination and telephone interview to detect any complications of incision or recurrence of ventral hernia. ResultsFor operative indices, all patients underwent the TVS procedure successfully except for one who had to be converted to laparoscopic intraperitoneal onlay mesh (IPOM) due to failure to establish preperitoneal space. The time required to establish preperitoneal space was 185.75 ± 44.37 s and the duration of hospital stay was 8.27 ± 1.42 days. No complications, such as abdominal bleeding or digestive tract injury, occurred during hospitalization. No complications of incision were observed during follow up, which lasted 2–24 months with an average of 7 months. ConclusionsPreliminary results of the novel attempt to establish the preperitoneal space visually confirmed this to be a safe and feasible method. However, the sample size used here was small, with a short follow up. The details and notes need to be further discussed.

Laparoscopic Intra Peritoneal Onlay Mesh Plus (IPOM Plus) repair of Ventral Hernias – Experience in a Tertiary Hospital

Introduction: Laparoscopic Ventral Hernia Repair (LVHR) was first described by Karl Leblanc in 1992 and has increasingly been gaining popularity in this present era of minimal access surgery. Laparoscopic Intraperitoneal Onlay Mesh (IPOM) repair with its modification intraoperative Onlay Mesh Plus (IPOM Plus) repair is now being well-accepted option for the treatment of ventral hernias. Objective: To assess the safety and efficacy of the laparoscopic IPOM plus modality in the management of ventral hernias. Methods: This is a descriptive observational study, carried out on 22 patients who underwent Laparoscopic ventral hernia repair by IPOM Plus technique between January 2017 to December 2018 at CMH Dhaka. Patients who had ventral hernia with a defect size> 2 cm but < 10 cm were included in this study. Primary subcutaneous transfascial suture closure of all ventral hernias with defect size >2 cm were done using prolene 1-0.Optimized composite mesh (ParietexTM) and Polymesh composite partially absorbable mesh were used as prosthesis anchored with four corner sutures and fixed with non absorbable tacking device. Follow up period was one year. Results: A total of 22 patients underwent Laparoscopic IPOM Plus repair of ventral hernias. Intraoperative and postoperative complications were negligible. No seroma, bulging of mesh, intestinal obstruction, mesh infection and recurrence observed in one year follow up time. But one patient developed de novo spigelian hernia on the right side outside the mesh system after one year. One patient (4.5%) developed post operative persisting pain requiring analgesic at 2 months. Conclusion:: Laparoscopic IPOM plus repair of ventral hernia is a safe, effective and well accepted modality. J Bangladesh Coll Phys Surg 2023; 41: 150-155

Prophylactic onlay mesh placement techniques for optimal abdominal wall closure: randomized controlled trial in an ex vivo biomechanical model.

Incisional hernias occur after up to 40 per cent of laparotomies. Recent RCTs have demonstrated the role of prophylactic mesh placement in reducing the risk of developing an incisional hernia. An onlay approach is relatively straightforward; however, a variety of techniques have been described for mesh fixation. The biomechanical properties have not been interrogated extensively to date. This ex vivo randomized controlled trial using porcine abdominal wall investigated the biomechanical properties of three techniques for prophylactic onlay mesh placement at laparotomy closure. A classical onlay, anchoring onlay, and novel bifid onlay approach were compared with small-bite primary closure. A biomechanical abdominal wall model and ball burst test were used to assess transverse stretch, bursting force, and loading characteristics. Mesh placement took an additional 7-15 min compared with standard primary closure. All techniques performed similarly, with no clearly superior approach. The minimum burst force was 493 N, and the maximum 1053 N. The classical approach had the highest mean burst force (mean(s.d.) 853(152) N). Failure patterns fell into either suture-line or tissue failures. Classical and anchoring techniques provided a second line of defence in the event of primary suture failure, whereas the bifid method demonstrated a more compliant loading curve. All mesh approaches held up at extreme quasistatic loads. Subtle differences in biomechanical properties highlight the strengths of each closure type and suggest possible uses. The failure mechanisms seen here support the known hypotheses for early fascial dehiscence. The influence of dynamic loading needs to be investigated further in future studies.