Complex Ventral Hernias: A Review of Past to Present

Results From Complex Abdominal Reconstruction at Non-Academic Institution can Favorably Compare to Major Academic Centers: An Abdominal Core Health Quality Collaborative Database Review

BACKGROUND

Many complex abdominal hernias are referred to tertiary academic institutions for evaluation and treatment. The purpose of this study was to compare clinical outcomes from complex abdominal hernia repairs and abdominal wall reconstructions at a community hospital vs high volume academic centers participating in Abdominal Core Health Quality Collaborative (ACHQC).

METHODS

Patients undergoing elective complex abdominal hernia repair were identified in our community setting and treated between 2016 and 2019. These results were then compared to Academic centers in the ACHQC database. Complex hernia definition was limited to those who have undergone any myofascial advancement procedure for homogeneity. Informed consent was obtained, and study was IRB approved. All data was de-identified.

RESULTS

A total of 180 patients underwent complex abdominal hernia repair at our community hospital. The ACHQC database identified 6299 patients meeting criteria at participating academic centers. Demographics were similar between the two groups including hernia grade, size and wound class. Academic centers tended to have patients with previous component separations (25.7% vs 10.6%) and immunosuppressed (7.2% vs 2.8%), while the community hospital patients included more patients with tobacco use (18.9% vs 12.1%) and hypertension (65% vs 54.9%). Operative times were significantly less at the community hospital, patients requiring >240 minutes of time for repair at academic centers (39.6% vs 5%). Postoperatively length of stay was significantly shorter at the community hospital group averaging 3.7 days vs academic centers of 6 days (P < .05). Although overall complications were less in the community hospital group (26.5% vs 19.4%). Readmission within 30 days was nearly twice as frequent in the community hospital group (14.4% vs 7.7%).

CONCLUSION

Community hospitals can provide comparable care and surgical expertise as major academic centers in regard to complex hernias in a large majority of cases. There is a need for dedicated care coordination and continuous review of supporting staff and outcomes is necessary to assure quality care. There is still a need to identify which patients would benefit from treatment at an academic center as opposed to a community hospital in order to maximize patient access and outcomes at both types of hospital setting. Further investigation needs to be performed regarding criteria for which patients should be transferred to academic centers for their complex hernia care. Identifying patients who would benefit from treatment at Academic Centers as opposed to Community hospitals should continue to be investigated.

Missing the Mark: Evaluating the Validity of the Ventral Hernia Screen in Detecting Recurrence

PURPOSE

Hernia recurrence is a primary metric in evaluating the success of ventral hernia repair (VHR). Current screening methods for hernia recurrence, including the validated Ventral Hernia Screening (VHS) questionnaire, have not yet been critically evaluated. The purpose of this study was to evaluate the predictive value of the VHS for hernia recurrence.

METHODS

This is a retrospective cohort study of adult patients who underwent primary VHR utilizing poly-4-hydroxybutyrate mesh at a single-institution from January 2016 to December 2021 who completed at least one VHS during their postoperative follow-up. All patients who screened positive underwent follow-up diagnostic computed tomography or physical examination for confirmation of hernia recurrence. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were assessed for each item and the VHS as a whole.

RESULTS

A total of 68 patients who completed 119 VHS questionnaires were included. The median time to VHS administration was 3.6 years (range .8-6.3 years). The VHS tool had a sensitivity of 40.0%, specificity of 71.1%, PPV of 5.7%, and NPV of 96.4%. Individual items of the VHS also produced poor screening effects, with sensitivities between 20 and 40%, specificities between 79 and 97%, PPVs between 4 and 25%, and NPVs from 95 to 97%.

CONCLUSION

The VHS was a poor positive predictive tool for hernia recurrence, with both a low PPV and sensitivity. Many patients may be unaware of when they truly have hernia recurrence in the long term. More rigorous tools need to be developed to monitor recurrence following VHR.

Novel insights into patient's thoughts about their body image in abdominal wall hernia

BACKGROUND

Abdominal wall hernias (AWH) are frequently large and deforming. Despite this, little is known about how AWH impact upon body image. This study is the first study to qualitatively examine patients' subjective lived experiences of how AWH affects their body image.

METHODS

Fifteen patients were interviewed from a purposive sample of AWH patients awaiting surgery until no new narrative themes emerged. Interviews explored patient thoughts and experiences of AWH and body image. Data were examined using interpretative phenomenological analysis (IPA).

RESULTS

Two key themes pertaining to body image were identified: "Changes to perceptions of self" and "Fears concerning other's perceptions of them". Both themes were often interrelated and displayed detrimental effects AWH had on patients' body image.

CONCLUSIONS

Our findings illustrate that AWH detrimentally affected patients' body image. This aspect of patient care can be treated and managed through better pre-operative information, including on body image as part of a holistic needs assessment (HNA), and ensuring the results are addressed in a patient care package. These development suggestions may positively affect the AWH patient's experience and outcomes in terms of Quality of Life (QoL) by preparing patients better for realistic results regarding what can be achieved in terms of form, function thus making a more holistic recovery from surgery.

Abdominal wall hernia and mental health: patients lived experiences and implications for patient care

BACKGROUND

Abdominal wall hernia (AWH) affects mental health and mental health questions are frequently included within Patient-Reported Outcome Measures (PROMS) for this patient population. However, these questions have not been informed by the subjective lived experiences of mental health in AWH patients. This study is the first to qualitatively examine how AWH affects patients' mental health.

METHODS

Fifteen patients were interviewed from a purposive sample of AWH patients until no new themes emerged. Interviews explored patient thoughts and experiences of AWH and mental health. Data were examined using Interpretative Phenomenological Analysis (IPA).

RESULTS

Three key themes pertaining to mental health were identified: "psychological and emotional distress", "identity disruption" and "coping mechanisms and support systems".

CONCLUSION

Our findings illustrate that AWH is a pathology that can have a significant detrimental impact on people's mental health. This impact has implications for patient care and can be treated and managed through better psychological support. This support may positively affect AWH patient's experience and outcomes in terms of quality of life. This paper provides recommendations for improved AWH patient care in regard to mental health.

Health-related quality of life in abdominal wall hernia: let's ask patients what matters to them?

INTRODUCTION

Quality of Life (QoL) is an important consideration in patients with abdominal wall hernia (AWH). What matters to patients and their everyday experience living with AWH may depend on a variety of personal, psychological, social and environmental factors. At present, no study has addressed what is important to this particular group of patients by asking the patients themselves. This study aims to determine QoL from the patient's perspective by examining the lived experience in this patient population.

METHODS

We interviewed 15 patients with AWH until thematic saturation. The patients were purposively sampled from AWH clinic between February 2020 and June 2020 using topic guides and interview schedules. Verbatim interview transcripts were coded and analysed using NVivo12 software and Interpretative Phenomenological Analysis (IPA). We adhered to consolidated criteria for reporting qualitative research (COREQ).

RESULTS

Fifteen participants (8 men and 7 women) of age range 36-85 years, median 65 years, covering all Ventral Hernia Working Group (VHWG) grades. Five superordinate themes were identified each with several subordinate themes, as follows: (1) body image (subthemes-'changes to perceptions of self' and 'fears concerning perceptions of others'). (2) Mental health (subthemes-'emotional responses', 'disruptions to previously solid aspects of identity', 'developing coping strategies'). (3) Symptoms (subthemes-'managing pain', 'freedom of movement', 'restriction and adaptation of function'). (4) Interpersonal relationships (subthemes-'difficulties socially connecting' and 'changes in sexual relations'). (5) Employment (subthemes-'financial pressure', 'return to work issues' and 'costs to family').

CONCLUSION

This is the first phenomenological qualitative study in the field of AWH and presents a rich account of what is important to these patients in terms of QoL. Developed from the patients' own words, the themes are interrelated and should shape our understanding of patients with AWH. This study provides qualitative examples of each theme. This study has identified new themes (body image, interpersonal relationships and employment) that are not incorporated in existing AWH-specific QoL instruments. This is important for surgeons because the study suggests that we are currently not capturing all data relevant to QoL in this specific patient group with current tools. The wider impact of this would be to help counsel patients and support them more holistically through the disease process and it's management. Further research is needed to generate a standardised AWH QoL instrument which incorporates bio-psycho-emotional-social themes important to patients, as identified by patients.

Pre- and postsurgical imaging findings of abdominal wall hernias based on the European Hernia Society (EHS) classification

Abdominal wall hernias are common and can present as technical challenges to surgeons. When large, hernias diminish quality of life. Various classifications of incisional hernias have been proposed; however, there are many terms, sometimes causing confusion (1). Radiologists must know the normal anatomy of the abdominal wall, the CT protocol, and what if any maneuvers can be performed to better identify an abdominal wall defect. The description of the radiological approach for primary and incisional wall hernias is based on the 2007 European Hernia Society classification, with particular emphasis on presurgical and postsurgical imaging findings. This classification provides a simple and reproducible method to describe hernias to offer proper surgical management. We highlight this classification so that radiologists and surgeons can have a unified language.

Robotic Incisional Hernia Repair After Robotic-assisted Radical Prostatectomy (RARP): A 3-port Approach

BACKGROUND/AIM

Incisional hernia is a complication that occurs occasionally, and surgical intervention is required to prevent more severe sequela. While there are several options for management, robotic-assisted incisional repair has not been well discussed yet. We herein report a case series of 10 patients who underwent robotic-assisted incisional hernia repair (RIHR) after robotic-assisted radical prostatectomy (RARP). The aim of the study was to examine the feasibility of incisional hernia repair with da Vinci® robotics.

PATIENTS AND METHODS

We recruited patients from a group of 2,000 consecutive patients who underwent RARP from December, 2005 to June, 2020 by a single surgeon. Patient characteristics included age, body mass index (BMI), PSA level, pathology Gleason score, and pathology TNM staging. The variants regarding the patients' incisional hernia included incisional hernia occurrence time after RARP, defect size, operation time, console time, blood loss, and follow-up time after the herniation occurrence. Furthermore, we established a defect size of 3x2 cm² as the cutoff value for using mesh reinforcement or not.

RESULTS

The mean defect area was 27.7 cm², and the average operative time was 114.8 min, with a mean console time of 87 min. Blood loss was 32.5 ml, and the hospital stay for all patients was 3 days without complications. The mean follow-up period was 29.5 months, with no recurrence.

CONCLUSION

RIHR is a feasible surgical method that is not inferior to the traditional open or laparoscopic repair. Furthermore, RIHR can possibly lessen the burden of both the surgeon and patient.

Predictors of 30- and 90-Day Readmissions After Complex Abdominal Wall Reconstruction With Biological Mesh: A Longitudinal Study of 232 Patients

BACKGROUND

Hospital readmissions are recognized as indicators of poor healthcare services which further increase patient morbidity. The aim of this study is to analyze predicting factors for the 30-day and 90-day readmissions after a complex abdominal wall reconstruction (CAWR).

METHODS

A pooled analysis of the prospective study and retrospective database patients undergoing CAWR with acellular porcine dermis from 2012 to 2019 was carried out. Independent t test for continuous variables and Chi-square and Fischer's exact tests for categorical variables were used. A multivariable logistic regression model and linear regression analysis were used to analyze the independent predictors of 30-day and 90-day readmissions.

RESULTS

A total of 232 patients underwent CAWR, and the readmission rate (RR) was 16.8% (n = 40). The 30-day and 90-day RR was 11.3% (n = 23) and 13.3% (n = 33), respectively. There were no statistical differences in age, frailty, and gender distribution between the two groups. There was no difference in ASA score, type of component separation, ventral hernia working group class, size of the biological mesh, placement of mesh, and intestinal resection rate. The Clavien-Dindo complications and mean comprehensive complication index (CCI) were higher in the readmission group as compared to no readmission group (p < 0.01). Readmitted patients had higher surgical site infections (p < 0.01) and wound necrosis (p = 0.01). Higher CCI, past or concomitant pelvic surgery, and the presence of enterocutaneous fistula were independent predictors of earlier days to readmission.

CONCLUSION

Surgical site occurrences were associated with 30-day and 90-day readmissions after CAWR, while the presence of ascites and dialysis was associated with 90-day readmissions.

Appropriate patient selection facilitates safe discharge from the PACU after laparoscopic ventral hernia repair: an analysis of the AHSQC database

BACKGROUND

The postoperative management of patients undergoing laparoscopic ventral hernia repair (VHR) remains relatively unknown. The purpose of our study was to determine if patient and hernia-specific factors could be used to predict the likelihood of hospital admission following laparoscopic VHR using the Americas Hernia Society Quality Collaborative (AHSQC) database.

METHODS

All patients who underwent elective, laparoscopic VHR with mesh placement from October 2015 through April 2019 were identified within the AHSQC database. Patients without clean wounds, those with chronic liver disease, and those without 30-day follow-up data were excluded from our analysis. Patient and hernia-specific variables were compared between patients who were discharged from the post-anesthesia care unit (PACU) and patients who required hospital admission. Comparisons were also made between the two groups with respect to 30-day morbidity and mortality events.

RESULTS

A total of 1609 patients met inclusion criteria; 901 (56%) patients were discharged from the PACU. The proportion of patients discharged from the PACU increased with each subsequent year. Several patient comorbidities and hernia-specific factors were found to be associated with postoperative hospital admission, including older age, repair of a recurrent hernia, a larger hernia width, longer operative time, drain placement, and use of mechanical bowel preparation. Patients who required hospital admission were more likely than those discharged from the PACU to be readmitted to the hospital within 30 days (4% vs. 2%, respectively) and to experience a 30-day morbidity event (18% vs. 8%, respectively).

CONCLUSIONS

Patient- and hernia-specific factors can be used to identify patients who can be safely discharged from the PACU following laparoscopic VHR. Additional studies are needed to determine if appropriate patient selection for discharge from the PACU leads to decreased healthcare costs for laparoscopic VHR over the long-term.

Laparoscopic versus open ventral hernia repair in the elderly: a propensity score-matched analysis

BACKGROUND

Ventral hernia repair is common in the expanding aging population, but remains challenging due to their frequent comorbidities. The purpose of this study is to compare the surgical outcomes of open vs. laparoscopic ventral hernia repair in elderly patients.

METHODS

Patients ≥ 65 years of age that underwent elective open or laparoscopic ventral hernia repair were identified from the American College of Surgeons National Surgical Quality Improvement Project (NSQIP) database. To reduce potential selection bias, propensity scores were created for the likelihood of undergoing laparoscopic surgery based on patients' demographics and comorbidities. Patients were matched based on the logit of the propensity scores. Thirty-day surgical outcomes were compared after matching using Chi-square test for categorical variables and the Wilcoxon Rank-Sum test for continuous variables.

RESULTS

35,079 (71.1%) and 14,270 (28.9%) patients underwent open and laparoscopic ventral hernia repairs, respectively. Laparoscopic surgery was associated with a lower overall morbidity (5.9% vs. 9.1%; p < 0.001) compared to open repair. The incidence of surgical site infections (1.1% vs. 3.5%; p < 0.001), post-operative infections (2.7% vs. 3.6%; p < 0.001), and reoperation (1.7% vs. 2.1%; p = 0.009) were all lower after laparoscopic repair. All other major surgical outcomes were either better with laparoscopy or comparable between both treatment groups except for operative time.

CONCLUSION

Although open surgery remains the most prevalent in the elderly population, the results of this study suggest that laparoscopic surgery is safe and associated with a lower risk of overall morbidity, surgical site infections, and reoperation.

Surgical technique for development of a clinically-representative ventral hernia repair infection rat model

The animal model of infection following ventral hernia repair (VHR) has previously been utilized in exploring treatments and innovative therapies, such as implantation of biologic mesh imbedded with various anti-bacterial properties. The rat model has been utilized most commonly, but prior work has failed to recreate an adequately clinically representative model of infection following VHR. Additionally, there is lack of standardization of mesh infection severity across existing literature. Therefore, the aim of this paper is to describe the creation of a clinically representative VHR infection model utilizing an index procedure where a hernia defect is created followed by a VHR using biologic mesh and subsequent infectious agent inoculation. Additionally, we describe the development of a standardization index to quantify severity of mesh infection: the Mesh Infection Severity Index (MISI).•Our protocol involves two procedures, an index procedure where a hernia model is created, and a subsequent procedure where an infectious inoculant is introduced.•We describe the MISI, a standardization tool we hope will allow for ease of cross-institutional data assessment.•In summary, our protocol not only serves as a more clinically representative animal model, but also includes a novel metric to standardize mesh infection severity.

Accreditation and certification requirements for hernia centers and surgeons: the ACCESS project

INTRODUCTION

There is a need for hernia centers and specialist hernia surgeons because of the increasing complexity of hernia surgery procedures due to new techniques, more difficult cases and a tailored approach with an increasing public awareness demanding optimal treatment results. Therefore, the requirements for accredited/certified hernia centers and specialist hernia surgeons should be formulated by the international and national hernia societies, while taking account of the respective health care systems.

METHODS

The European Hernia Society (EHS) has appointed a working group composed of 18 hernia experts from all regions of Europe (ACCESS Group-Hernia Accreditation and Certification of Centers and Surgeons-Working Group) to formulate scientifically based requirements for hernia centers and specialist hernia surgeons while taking into consideration different health care systems. A consensus was reached on the key questions by means of a meeting, a telephone conference and the exchange of contributions. The requirements formulated below were deemed implementable by all participating hernia experts in their respective countries.

RESULTS

The ACCESS Group suggests for an adequately equipped hernia center the following requirements: (a) to be accredited/certified by a national or international hernia society, (b) to perform a higher case volume in all types of hernia surgery compared to an average general surgery department in their country, (c) to be staffed by experienced hernia surgeons who are beyond the learning curve for all types of hernia surgery recommended in the guidelines and are responsible for education and training of hernia surgery in their department, (d) to treat hernia patients according to the current guidelines and scientific recommendations, (e) to document each case prospectively in a registry or quality assurance database (f) to perform follow-up for comparison of their own results with benchmark data for continuous improvement of their treatment results and ensuring contribution to research in hernia treatment. To become a specialist hernia surgeon, the ACCESS Group suggests a general surgeon to master the learning curve of all open and laparo-endoscopic hernia procedures recommended in the guidelines, perform a high caseload and additionally to implement and fulfill the other requirements for a hernia center.

CONCLUSION

Based on the above requirements formulated by the European Hernia Society for accredited/certified hernia centers and hernia specialist surgeons, the national and international hernia societies can now develop their own programs, while taking account of their specific health care systems.