A multi-center, prospective clinical trial of a hepatic derived porcine surgical mesh for the laparoscopic repair of symptomatic paraesophageal hernias

Cruroplasty with or without mesh? A systematic literature review with a novel time-organized proportion meta-analysis

BACKGROUND

Improved outcomes with the use of non-absorbable mesh (NAM) for inguinal hernia repairs led to its rapid adoption for hiatal hernia (HH) repairs; however, feared complications occurred, and the trend shifted toward using absorbable mesh (AM). We aimed to analyze the literature assessing objective HH recurrence rates after primary laparoscopic cruroplasty with or without the use of different mesh types.

METHODS

A systematic literature review with both pairwise and time-organized proportion meta-analyses of articles published between January 1993 and September 2022 was performed using the MEDLINE, EMBASE, and Taylor & Francis databases to identify relevant studies comparing groups undergoing cruroplasty with suture repair (SR) alone, AM, NAM, or partially absorbable mesh (PAM). Studies documenting an objective follow-up ≥ 6 months were included. The primary outcome was the HH recurrence rate confirmed by barium esophagram or upper GI endoscopy.

RESULTS

A total of 34 studies met the inclusion criteria, including 6 randomized clinical trials, 25 retrospectives studies, and 3 prospective cohort studies. A total of 2170 subjects underwent laparoscopic HH repair and completed an objective follow-up ≥ 6 months after surgery; the objective recurrence rate was 20.8% (99/477) at a mean follow-up of 25.8 ± 16.4 months for the SR group, 20.6% (244/1187) at 28.1 ± 13.8 months for the AM group, 13.7% (65/475) at 30.8 ± 15.3 months for the NAM group, and 0% (0/31) at 32.5 ± 13.5 months for the PAM group. However, the pairwise meta-analysis revealed that overall mesh use was not superior to SR in preventing long-term HH recurrence.

CONCLUSION

The use of AM does not appear to reduce HH recurrence compared to SR alone. Although the data favors NAM to decrease objective HH recurrence in the mid-term, the long-term (≥ 48 months) recurrence rate was similar with or without any type of mesh.

Tipping the scale in abdominal wall reconstruction: An analysis of short- and long-term outcomes by body mass index

BACKGROUND

Morbid obesity, with a body mass index 35 kg/m2, is a commonly used cutoff for denying elective transversus abdominis release. Although obesity is linked to short-term wound morbidity, its effect on long-term outcomes remains unknown, calling into question if a cutoff is justified. We sought to compare 1-year recurrence rates after transversus abdominis release based on body mass index and to evaluate short- and long-term outcomes.

METHODS

Patients undergoing open, clean transversus abdominis release from August 2014 to January 2022 at our institution with 1-year follow-up completed were identified. Univariate and multivariable analyses were performed to determine the association of body mass index with 90-day wound events, 1-year hernia recurrence, and hernia-specific quality of life. Covariates included body mass index, diabetes, recurrent hernia, hernia width, fascial closure, surgical site occurrence requiring procedural intervention, previous abdominal wall surgical site infection, inflammatory bowel disease, mesh weight, and mesh-to-hernia size ratio.

RESULTS

A total of 1,089 patients were included. Increasing body mass index was associated with surgical site infection (adjusted odds ratio = 1.59; 95% confidence interval, 1.14-1.77; P < .01) and surgical site occurrence (adjusted odds ratio = 1.42; 95% confidence interval, 1.13-1.74; P < .01) but was not associated with surgical site occurrence requiring procedural intervention. Hernia width was associated with surgical site occurrence (adjusted odds ratio = 1.4; 95% confidence interval, 1.08-1.82; P < .01) and surgical site occurrence requiring procedural intervention (adjusted odds ratio = 1.4; 95% confidence interval, 1.08-1.82; P = .01). Hernia recurrence rate at 1 year was lower for the body mass index ≥35 kg/m2 group (7% vs 12%; P = .02). Hernia width (odds ratio = 1.33; 95% confidence interval, 1.02-1.74; P = .04) was associated with recurrence; body mass index was not (P = .11). Both groups experienced significant improvement in hernia-specific quality of life at 1 year.

CONCLUSION

Morbid obesity is associated with 90-day wound morbidity; however, short-term complications did not translate to higher reoperation or long-term recurrence rates. The impact of body mass index on hernia recurrence is likely overstated. An arbitrary body mass index cutoff of 35 kg/m2 should not be used to deny symptomatic patients abdominal wall reconstruction.

Medium-term safety and efficacy profile of paraesophageal hernia repair with Phasix-ST® mesh: a single-institution experience

BACKGROUND

Hernia recurrence after laparoscopic repair is a perplexing problem. In an effort to reduce anatomical and clinical recurrences, different type of meshes have been used to bolster the esophageal hiatus.

OBJECTIVE

The aim of this study was to assess safety, medium-term efficacy, and quality of life improvement after laparoscopic repair of hiatal hernia reinforced with a biosynthetic absorbable mesh (Phasix-ST^®).

METHODS

Observational single-center retrospective single-arm cohort study (November 2015-February 2021). We included all adult patients (> 18 years old) who underwent laparoscopic paraesophageal hernia repair with Phasix-ST^® mesh and Toupet fundoplication.

RESULTS

Sixty-eight patients were included. The median postoperative stay was 3.2 days (range 2-9) and the postoperative complication rate was 11.7%. The median follow-up time was 27 months (range 1-53). No mesh-related complications were detected. Hernia recurrence was diagnosed in six patients (8.8%). The recurrence-free probability at 34 months was 0.89 (95% CI 0.807-0.988) while at 60 months was 0.86 (95% CI 0.76-0.97). Hernia recurrences were mostly observed between 21 and 36 months after the operation. None of the patients required surgical revision and all were managed with PPI. Postoperative dysphagia requiring endoscopic balloon dilatation occurred in 2.9% of patients. Compared to baseline, both the GERD-HRQL (15.2 ± 6.2 vs. 3.2 ± 3.1; p = 0.026) and all SF-36 items were significantly improved (p < 0.001).

CONCLUSIONS

Laparoscopic crura augmentation with Phasix-ST^® mesh combined with a Toupet fundoplication is safe and seems effective in the medium-term follow-up. Phasix-ST^® crural reinforcement resulted in low hernia recurrence rate with a sustained symptoms and quality of life improvement.

Quality of life and symptom assessment in paraesophageal hernias: a systematic literature review of reporting standards

BACKGROUND

Paraesophageal hernias (PEH) present with a range of symptoms affecting physical and mental health. This systematic review aims to assess the quality of reporting standards for patients with PEH, identify the most frequently used quality of life (QOL) and symptom severity assessment tools in PEH and to ascertain additional symptoms reported by these patients not captured by these tools.

METHODS

A systematic literature review according to PRISMA protocols was carried out following a literature search of MEDLINE, Embase and Cochrane databases for studies published between January 1960 and May 2020. Published abstracts from conference proceedings were included. Data on QOL tools used and reported symptoms were extracted.

RESULTS

This review included 220 studies reporting on 28 353 patients. A total of 46 different QOL and symptom severity tools were used across all studies, and 89 different symptoms were reported. The most frequently utilized QOL tool was the Gastro-Esophageal Reflux Disease-Health related quality of life questionnaire symptom severity instrument (47.7%), 57.2% of studies utilized more than 2 QOL tools and 'dysphagia' was the most frequently reported symptom, in 55.0% of studies. Notably, respiratory and cardiovascular symptoms, although less common than GI symptoms, were reported and included 'dyspnea' reported in 35 studies (15.9%).

CONCLUSIONS

There lacks a QOL assessment tool that captures the range of symptoms associated with PEH. Reporting standards for this cohort must be improved to compare patient outcomes before and after surgery. Further investigations must seek to develop a PEH specific tool, that encompasses the relative importance of symptoms when considering surgical intervention and assessing symptomatic improvement following surgery.

Surgical and clinical outcomes comparison of mesh usage in laparoscopic hiatal hernia repair

PURPOSE

Use of absorbable mesh in hiatal hernia (HH) repair has been shown to decrease recurrence rates. Our aim was to compare the efficiency of three meshes in relation to the surgical outcomes of patients undergoing HH repair.

METHODS

A single-institution retrospective review was done for adult patients who underwent HH repair with mesh between 2004 and 2016. Demographics, intra-operative, and cost data were collected. Esophageal symptoms and medication use were assessed pre- and postoperatively. Surgical outcomes were evaluated at 6-, 12-months, and long-term follow-up. Three groups were created based on type of mesh: human tissue matrix (HTM), biosynthetic mesh (BIOS), or porcine tissue matrix (PTM). Comparisons were performed between groups using SPSS v.26.0 and PC SAS v9.4, α = 0.05.

RESULTS

292 patients were included (HTM:N = 162, BIOS:N = 83, PTM:N = 47). Majority were male (60.4%), Caucasian (93.2%), median age, and BMI of 59 years [25-90 years] and 29.19 kg/m² [18.9-58.0 kg/m²], respectively. 69% had a large HH. Median follow-up time was 27 months [1-166 months]. Overall recurrence rate was 39%, being significantly lower in BIOS at long-term (HTM: 31%, BIOS: 17%, PTM: 19%, p = 0.038). All groups had a significant postoperative improvement of esophageal symptoms, all p < 0.001. 65-70% of the cost difference between the groups was incurred by the cost of mesh alone (HTM: $1072, BIOS: $548, PTM: $1295), with the remainder attributable to the surgery itself.

CONCLUSION

While outcomes of the three mesh groups were similar in our data, there was a significant difference in mesh cost. Surgeon and hospital preference still play a role in choosing the type of mesh used; however, knowledge of the individual mesh cost will help surgeons make better informed decisions.

Critical appraisal of the impact of surgical repair of type II-IV paraoesophageal hernia (POH) on pulmonary improvement: A systematic review and meta-analysis

BACKGROUND

Paraoesophageal hernia (POH) comprising type II-IV hiatal hernia often presents with pulmonary symptoms such as shortness of breath. However, impact of surgical repair on improvement in pulmonary symptoms is unclear.

OBJECTIVE

This systematic review and meta-analysis aimed at characterising impact of POH repair on patient reported improvement in pulmonary symptoms.

METHODS

This systematic review identified studies reported pulmonary symptoms in patients with undergoing surgical repair for Type II-IV POH from 1st January 2001 to 1st December 2018. Primary outcome was improvement in pulmonary symptoms. Secondary outcomes were improvement in other patient-reported outcomes such as heartburn, regurgitation, chest pain, and dysphagia and intraoperative and postoperative outcomes.

RESULTS

This systematic review identified 27 studies (n = 4428 patients) reporting assessment of pulmonary symptoms. However, only 21 studies (n = 2902 patients) reported preoperative and postoperative pulmonary symptoms and hence these were included in the final meta-analysis. There was significant improvement in pulmonary symptoms following POH repair (OR: 8.40, CI_95%: 4.91-14.35, p < 0.001), with improvement in all types of POH. Rates of overall and major complications were 16% and 5%, respectively. Rates of conversion, 30-day mortality, reoperation and recurrence were 2%, 1% 4% and 12% respectively.

CONCLUSION

This review demonstrates that POH repair is associated with improvement in pulmonary symptoms with acceptable low laparoscopic conversion rates, morbidity, mortality and recurrence rates.

Safety and Efficacy of Crura Augmentation with Phasix ST Mesh for Large Hiatal Hernia: 3-Year Single-Center Experience

Background: Safety and effectiveness of absorbable meshes for laparoscopic hiatus hernia repair are still debated. This may be due to patient selection, technique of repair, type and shape of mesh, definition of recurrent hernia, and length of follow-up. The aim of this study was to assess safety, short-term efficacy, and quality of life after laparoscopic repair of hiatal hernia reinforced with a biosynthetic absorbable mesh. Materials and Methods: A single-center observational cohort study was conducted in patients with large type III-IV hiatal hernia who underwent laparoscopic crural repair reinforced with Phasix ST^®, a monofilament resorbable mesh (poly-4-hydroxybuterate) with a hydrogel barrier on one side. Patient data were extracted from hospital charts and a prospectively updated research database. Both generic Short Form-36 (SF-36) and disease-specific (Gastro-Esophageal Reflux Disease Health-Related Quality of Life [GERD-HRQL]) questionnaires were used to assess preoperative and postoperative quality of life. Results: From January 2017 to July 2019, 73 consecutive patients were implanted with Phasix ST mesh. The median follow-up was 17 (interquartile range 9-24) months. Recurrent hernia was found in 2 of 62 (3.2%) patients followed for more than 6 months after surgery, but none required reoperation. The overall postoperative morbidity rate was 8.2%. No mesh-related complications occurred. Compared to baseline, there was a statistically significant improvement of all items of the SF-36 questionnaire (P < .001) and of the median GERD-HRQL score (P < .001). Conclusion: The use of Phasix ST mesh to reinforce crural repair for large hiatus hernias is safe, is effective in the short-term follow-up, and is associated to improved quality of life.

Retrospective Review and Prospective Follow-up of 85 Consecutive Patients Treated With a Novel Hepatic-derived Surgical Mesh for Hiatal Hernia Repair: Outcomes, Surgical Complications, and Revisions

This study examined outcomes, surgical complications, and revisions in patients treated with laparoscopic Nissen fundoplication for hiatal hernia and substantial gastroesophageal reflux disease. In total, 85 consecutive patients who underwent hernia repair with MIROMESH Biologic Matrix, a novel hepatic-derived surgical mesh served as subjects. Subjects were contacted by phone, consented, and participated in an Institutional Review Board-approved structured phone interview. Responses were acquired from 73 of the 85 patients. The gastroesophageal reflux disease health-related quality of life showed significant improvement postoperatively. Subjects reported high satisfaction with the procedure. The use of proton pump inhibitors was significantly reduced. Three minor complications were reported; these were quickly resolved without further sequelae. There were no mesh-related complications. No subjects reported further surgery. Placement of the surgical mesh, during surgery, to reinforce the hiatal repair was easy and safe. Excellent outcomes and no revisions a mean of 1.3 years after surgery suggest that a durable repair had been achieved.