Transumbilical laparoendoscopic single-site donor nephrectomy: evolving trends

Graft retrieval incisions in minimally invasive donor nephrectomy: Systematic review and network meta-analysis

BACKGROUND

Various incisions are employed for graft extraction during minimally invasive donor nephrectomy, but an overarching synthesis of associated short-term donor outcomes is lacking.

METHODS

An electronic literature search was conducted on PubMed, EMBASE and Scopus for studies comparing ≥2 graft extraction incisions in laparoscopic or robotic donor nephrectomy with ≥10 patients per arm. Eligible study designs included randomized trials, case-control, and cohort studies. Primary outcomes were donor length of stay (LOS); in-hospital analgesic requirement; and postoperative complications. Secondary outcomes were warm ischemia time (WIT), total operation time (TOT), and estimated blood loss (EBL). Random-effects Frequentist network meta-analyses were conducted for all outcomes.

RESULTS

Twenty-nine studies (4702 patients) were shortlisted. Six incisions were analyzed: iliac, Pfannenstiel, midline hand-assisted laparoscopic (HAL), midline umbilical, flank and transvaginal natural orifice transluminal endoscopic surgery (NOTES). The flank incision had significantly longer LOS than all other incisions. LOS was significantly longer in Pfannenstiel than iliac incision (mean difference [MD] = 0.29, 95%CI = 0.002-0.58 days). Midline HAL had significantly shorter TOT than most other incisions. Midline umbilical incisions had significantly higher WIT than midline HAL and Pfannenstiel incisions. Midline HAL had shorter WIT than transvaginal NOTES (MD = 0.80, 95%CI = 0.05-1.56 min). No major differences were seen in analgesia requirement, postoperative complications and EBL.

CONCLUSION

Six different incisions for graft retrieval are broadly comparable across most short-term outcomes although long-term outcomes remain to be elucidated. Iliac and Pfannenstiel incisions yielded similar outcomes besides marginally lower LOS for the former. Midline incision for HAL may be associated with shorter TOT, and transvaginal NOTES is an effective technique for selected female donors.

TRIAL REGISTRATION

PROSPERO CRD42023445407.

Laparo-Endoscopic Single-Site Left Donor Nephrectomy In Patients With Uncommon Renal Vascular Anatomy: Does the Technique Make a Difference?

BACKGROUND

To compare donor and recipient outcomes in patients with renal artery and ante-aortic renal vein vs unusual renal vascular anatomy undergoing laparoendoscopic single-site donor nephrectomy (LESSDN).

METHODS

A retrospective chart review of the comparative study of donor and recipient outcomes of LESSDN in donors with venous abnormality (n = 28, group A), arterial abnormality (n = 74, group B), and standard donors (n = 248, group C).

RESULTS

From September 2016 to August 2022, 350 left LESSDN were performed. The most common anomalies in group A were the retro-aortic and 2 renal veins in 12 patients each. In group B, 72 and 2 patients had 2 and 3 renal arteries, respectively. Operative and warm ischemia times were significantly longer in donors with vascular anomalies. Moreover, patient creatinine on discharge was significantly higher in arterial anomalies; it was 1.61 ± 0.22 compared with 1.26 ± 0.43 and 1.25 ± 0.32 mg/dL for patients with no anomalies and venous anomalies, respectively (P < .001). However, serum creatinine levels recovered after 1 month and were comparable between the study groups. Recipients, operative time, and vascular anastomosis time were significantly longer in recipients with vascular anomaly. Slow graft function was higher in group B (6.9%) than in the other groups. One-year graft survival rates were 96.4%, 94.6%, and 97.1% (P = .496).

CONCLUSION

With increased experience, LESSDN in multiple renal arteries and uncommon venous anatomy cases is feasible and safe. Moreover, it does not influence donor or recipient outcomes.

Post-Laparoendoscopic Single-Site Donor Nephrectomy Ipsilateral Testicular Pain, Does Operative Technique Matter? A Single Center Experience and Review of Literature

Aim

To assess incidence and characteristics of post-laparoendoscopic single-site donor nephrectomy (LESS DN) testicular pain.

Materials and Methods

A prospective comparative study of all male donors post-left LESS DN (group A) vs. postopen nephrectomies (group B) was performed at our center. Patients' demographics, perioperative data, and postoperative consultation reports were reviewed. Testicular pain, swelling, numbness, urinary symptoms, and sexual dysfunction were evaluated. Patients with a history of scrotal pathology or surgical procedure were excluded. Pain and tenderness were scored on a standard 10-point scale.

Results

From September 2017 to December 2020, 85 and 35 male patients of groups A and B met the evaluation criteria. Ipsilateral testicular pain developed in 11 patients (15.3%) and 2 patients (9.5%) in groups A and B, respectively. In most instances, the pain was mild to moderate in severity, started after 6 ± 2.1 and 4 ± 1.1 days postoperatively in groups A and B, respectively. Six patients in group A were evaluated with transscrotal ultrasonography that showed no abnormalities. All patients in both groups responded well to medical treatment.

Conclusions

Post-LESS DN ipsilateral testicular pain is usually mild and self-limited. Preoperative patient education and discussion of the possibility of development of testicular pain and its management should be an integral component of laparoscopic donor nephrectomy informed consent.

Outcome of Kidney Transplantation With Transumbilical Laparoendoscopic Single-Site Donor Nephrectomy: A Single-Center Experience

AIM

The aim of this study is to present the outcome of kidney transplantation after laparoendoscopic single-site donor nephrectomy (LESS DN) compared with conventional laparoscopic donor nephrectomy (LDN) in a single-center experience.

METHODS

This retrospective study compares data from the initial experience with 110 consecutive LESS DN donors and their recipients (group A) with 205 consecutive conventional LDN donors and their recipients (group B).

RESULTS

This study compared 110 LESS DNs completed in an 18-month period with 205 LDNs completed in the immediately preceding 42-month period. All procedures were performed by the same surgeon. In groups A and B, respectively, the incidence of immediate graft function was 90% vs 91.2%, slow graft function was 9% vs 5.3%, delayed graft function was 0.9% vs 2.9%, graft loss was 0.9% vs 2.9%, and death with a functioning graft was 0.9% vs 1.5%. The mean serum creatinine levels were 1.3 ± 0.93 mg/dL vs 1.4 ± 1.2 mg/dL (P = .447), 1.1 ± 0.33 mg/dL vs 1.2 ± 0.75 mg/dL (P = .184), and 1.05 ± 0.25 mg/dL vs 1.1 ± 0.39 mg/dL (P = .224) at 7, 30, and 365 days after transplantation. The estimated glomerular filtration rate at 1 year was 88 ± 18.2 vs 83 ± 12.2 mL/min/1.73 m² (P = .004). The mean donor operative times in groups A and B were 175.9 ± 24.9 minutes vs 199.88 ± 37.06 minutes (P = .0001), respectively, and the mean warm ischemia time was 5.2 ± 1.02 minutes vs 3.64 ± 1.38 minutes, respectively (P = .0001). The mean body mass index, the incidence of complex vascular anatomy, and the rate of complications were the same in the 2 donor groups.

CONCLUSIONS

The outcome of kidney transplantation after LESS DN is comparable to conventional LDN. LESS DN can be employed as the primary approach for kidney donation with low donor risk and without compromising recipient outcomes.