Learning curve of robotic transversus abdominis release in ventral hernia repair: a cumulative sum (CUSUM) analysis

Background Acute kidney injury (AKI) is a known postoperative complication of open ventral hernia repair contributing to increased costs, hospital length of stay, and mortality. The aim of this study was to identify whether the muscle injury that occurs in a posterior separation of components via transversus abdominis release (TAR) contributes to a higher incidence of postoperative AKI. Methods A retrospective cohort study of patients who underwent open retrorectus ventral hernia repair with and without TAR at a single institution between 2012 and 2019 was performed. Patients who underwent a separation of components via either unilateral or bilateral transversus abdominis release were compared to those who did not undergo TAR as part of their hernia repair (non-TAR). The outcome of interest was the development of postoperative AKI. Acute kidney injury was defined as an increase in creatinine of greater than 50% of the preoperative baseline. Univariate and multivariate analyses were performed to determine the influence of TAR on the development of AKI. Results There were 523 patients who met inclusion criteria, of which 159 (30.4%) had a TAR as part of their retrorectus hernia repair. No differences were found in preoperative characteristics between the TAR and non-TAR group including age, gender, history of kidney disease, or history of diabetes. By contrast, the TAR group had significantly greater median estimated blood loss (100 mL vs 75 mL, P < .01), mean positive intraoperative fluid balance (2255 mL vs 1887 mL, P < .01), and operative duration (321 min vs 269 min, P < .001). The rate of AKI in the TAR group was 11% (n = 18) vs 6% (n = 23, P = .0503) in the non-TAR group. On multivariate analysis controlling for patient characteristics and intraoperative factors, TAR was the only factor with a significantly increased odds of AKI (OR 1.97, 95% CI 0.994-3.905, P = .0521). Conclusions In patients with large ventral hernias requiring retrorectus repair, performing a TAR is associated with a nearly 2-fold increase in the development of postoperative AKI. These findings suggest that these patients should be optimized perioperatively with emphasis on fluid resuscitation, limiting nephrotoxic medications and monitoring urine output.

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P033 IMPLEMENTATION OF A ROBOTIC VENTRAL HERNIA REPAIR PROGRAM IN A EUROPEAN CENTER: RESULTS DURING THE LEARNING CURVE AND EARLY DEVELOPMENT

British Journal of Surgery ◽

10.1093/bjs/znab395.031 ◽

2021 ◽

Vol 108 (Supplement_8) ◽

Author(s):

Jonathan Douissard ◽

Arnaud Dupuis ◽

Monika Hagen ◽

Julie Mareschal ◽

Ihsan Inan ◽

...

Keyword(s):

Hernia Repair ◽

Learning Curve ◽

Ventral Hernia ◽

Ventral Hernia Repair ◽

Surgical Complication ◽

Transversus Abdominis ◽

Open Label ◽

Early Results ◽

Robotic Ventral Hernia Repair

Abstract Aim This study aims to describe the early results after implementing a robotic ventral hernia repair (RVHR) program in a European university center. Material and Methods All patients undergoing primary (PH) or incisional (IH) RVHR were included in an institutional open-label prospective quality database. Patients' baseline characteristics, intra-operative data, postoperative, and follow-up outcomes recorded from September 2018 to September 2020 were analyzed. Results Twenty-six PH and 58 IH were included; respectively, mean BMIs were 32.8±7.1 and 30.3±5.0kg/m2. Hernia resulted from median laparotomies in 69.0% of the IH patients; 5 patients (8.6%) had defects >10cm in width. In the PH group, the mean total operative room (OR) time was 98.1±42.5min. Mean VAS (Visual Analog Score) was 2.5±1.7 at day 0, 61.5% of patients were ambulatory, and 38.5% stayed 1-2 nights. One (3.8%) recurrence and 1(3.8%) surgical complication (umbilical perforation) occurred with no general complications. In the IH group, 15 patients required transversus abdominis release (TAR, 25.9%). Mean OR time was 179.6±82.3min, mean VAS 1.9±2.0 at day0, 19% of patients were ambulatory, 44.8% stayed 1-2 nights and 27.6% 3-4 nights. Mean follow-up was 71.6±51.8 days. One (1.7%) postoperative complication (bleeding, embolization, no reoperation), 2(3.4%) recurrences occurred. Successful completion of an extraperitoneal (eTEP) RVHR with bilateral TAR was achieved after 18 months and 40 cases, after which we began training a second surgeon. Conclusions Implementation of a RVHR program showed promising results with acceptable operative time even during the learning curve. Postoperative outcomes suggest a potential advantage in postoperative recovery.

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