Introducing Robot-Assisted Laparoscopic Donor Nephrectomy after Experience in Hand-Assisted Retroperitoneoscopic Approach

Retroperitoneal robot-assisted live-donor nephrectomy: A single-center study

Background

As the demand for kidney transplants continues to increase globally, healthcare institutions face a challenge to bridge the gap between patients waitlisted for kidney transplants and the number of donors. A major factor influencing the donor's decision is the operative risk and potential complications of the surgery. Open surgical approaches have been vastly replaced with laparoscopic donor nephrectomies as the standard of practice. However, there is a growing body of evidence pointing towards its potential superiority over laparoscopic methods. In this study, we aim to present our experience on outcomes of Robotic-Assisted Live Donor Nephrectomies (RALDN), the first series of its kind in the United Arab Emirates (UAE).

Methods

We retrospectively collected data from patients who underwent RALDN at Mediclinc City Hospital. Demographic data, laboratory investigations, and operative details were collected and analyzed.

Results

Seven patients underwent RALDN between 2021 and April 2022 at our facility. Four donors were male while three were female. Median length of hospital stay was 4 days. In our study, one of the patients suffered from a Clavien-Dindo grade IV complication which necessitated prolonged admission.

Conclusion

We conclude that RALDN is a safe method for donor kidney procurement, carrying a low risk of morbidity and mortality. This method could potentially evolve the number of kidney donors to address the issue of high kidney transplant demand.

Introducing robot-assisted laparoscopic donor nephrectomy after experience in retroperitoneal endoscopic approach: a matched propensity score analysis

OBJECTIVES

To assess the safety and efficacy of introducing robotic-assisted laparoscopic donor nephrectomy (RALDN) to the standard retroperitoneal endoscopic donor nephrectomy (REDN).

METHODS

Data were collected prospectively from 124 consecutive living kidney donors (93 for REDN subgroup and 31 for RALDN subgroup) from February 2018 to December 2020. Donor baseline demographics, perioperative outcomes and recipient outcomes were recorded, and these parameters were compared between the two subgroups before and after propensity-score matching.

RESULTS

Mean age was 51.1 ± 9.1 years; 42.7% were males; mean body mass index was 22.7 ± 2.4; and there were 109 (88%) left kidneys. The following data of REDN and RALDN was, respectively, recorded: operative time (213 ± 43 versus 216 ± 39 min, p = 0.721), warm ischemic time (4.7 ± 1.2 versus 4.9 ± 1.4 min, p = 0.399), postoperative complications (5.4% versus 6.5%, p = 1), haemoglobin (g/L) drop (9.4 ± 7.2 versus 9.7 ± 6.6, p = 0.836), blood creatinine at 6 month (1.15 ± 0.23 versus 1.13 ± 0.24 mg/dL, p = 0.734) and at 1 year (1.09 ± 0.22 versus 1.17 ± 0.28 mg/dL, p = 0.591). In post-propensity score matched analyses, there was no significant differences between the two groups including intraoperative and postoperative complications.

CONCLUSIONS

RALDN could be safely introduced into a living donor program experienced in laparoscopic donor nephrectomy. The outcomes of our study comparing these minimally invasive techniques are mostly similar in terms of intraoperative and postoperative outcomes for kidney donors.

Nonvisualized palpable bowel endometriotic satellites

STUDY QUESTION

What is the prevalence of laparoscopically nonvisualized palpable satellite bowel nodules at or near the planned stapler site in women undergoing segmental bowel resection for endometriosis?

SUMMARY ANSWER

Overall, 13 (25.5%) of 51 patients who underwent resection had nonvisualized palpable satellite lesions as small as 2 mm, including seven (14%) who had nonvisualized palpable lesions at or beyond the planned stapler site.

WHAT IS KNOWN ALREADY

Both laparoscopy and laparotomy for bowel resection are standard of care in Europe and the USA. Reoperation rates after laparoscopic bowel procedures are 1–16%. Endometriotic lesions at the stapler margin of bowel resections are associated with increased repeat surgery. Nodules of 0.1 mm to 1 cm in size were not recognized during laparoscopic bowel surgery but were recognized on histological examination. Up to 20 nodules not visualized at laparoscopy have been recognized and excised at laparotomy. Tenderness is found at up to 27 mm from a recognized lesion. The size of a lesion does not always predict its symptoms or behavior.

STUDY DESIGN, SIZE, DURATION

This single-arm, observational study focused on the presence of nonvisualized palpable satellite lesions of the bowel. Fifty-one patients scheduled for laparoscopic-assisted bowel resection for deep infiltrating endometriosis with suprapubic incision for placement of the stapler’s anvil and removal of the specimen in the course of routine clinical care were included. There were no additional inclusion or exclusion criteria.

PARTICIPANTS/MATERIALS, SETTING, METHODS

Laparoscopic-assisted segmental bowel resection for endometriosis was performed in a private referral center on women aged 24–49 years.

MAIN RESULTS AND THE ROLE OF CHANCE

Forty-nine (96.1%) of the 51 patients underwent segmental resection of the sigmoid or rectum, and 14 (27.5%) underwent segmental resection of the ileum for large nodule(s) recognized on MRI. Twelve patients underwent both procedures. Eleven (22.4%) of the 49 patients with recognized sigmoid or rectal lesions and 5 (35.7%) of the 14 patients with recognized ileal lesions had nonvisualized, palpable, satellite lesions. All the large lesions and none of the satellite lesions had been recognized preoperatively on MRI. Five (10%) of 49 patients with lesions of the large bowel and 4 (28.6%) of the 14 patients with lesions of the ileum had nonvisualized palpable satellite lesions at or beyond the planned stapler site. Lesions as small as 2 mm were palpable.

LIMITATIONS, REASONS FOR CAUTION

This is an observational study. It is not known if the small lesions of this study contributed to the symptoms or were progressive, stable or regressive. This study analyzed lesions in the bowel segment proximal to the primary large bowel lesion, but not in the distal segment as that would have required a change in standard of care surgical technique. This study protocol did not include shaving or disk resection or patients in whom no lesions were visualized. The use of additional techniques for recognition, such as hand-assisted laparoscopy or rectal probes, was not investigated.

WIDER IMPLICATIONS OF THE FINDINGS

This study confirms that some nonvisualized satellite lesions as small as 2 mm are palpable and that an increased length of resection can be used to remove lesions recognized by palpation and to avoid lesions at and beyond the stapler site. This may decrease recurrent surgery in 1–16% of the women undergoing surgery for bowel endometriosis. Knowledge of the occurrence of these small lesions may also be particularly useful in plans for repeat surgery or for women with clinically significant bowel symptoms and no visible lesions at laparoscopy. Moreover, small lesions are considered to be important as there is no current technique to determine whether a large primary lesion, smaller lesions, an associated adjacent tissue reaction or a combination of those cause symptoms.

STUDY FUNDING/COMPETING INTEREST(S)

This CIRENDO cohort was supported by the G4 Group (the University Hospitals of Rouen, Lille, Amiens and Caen) and the ROUENDOMETRIOSE association. No specific funding was received for the study. H.R. reports receiving personal fees from Plasma Surgical Inc., Ethicon Endosurgery, Olympus and Nordic Pharma for presentations related to his experience with endometriosis surgery. D.C.M. reports being given access to Lumenis Surgical CO₂ Lasers’ lab at a meeting. None of the other authors have conflicts of interest to disclose.

TRIAL REGISTRATION NUMBER

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