We aimed to evaluate the renoprotective effects of remote ischemic preconditioning (RIPC) in patients undergoing robot-assisted laparoscopic partial nephrectomy (RAPN). Data from 59 patients with solitary renal tumors who underwent RAPN with RIPC comprising three cycles of 5-min inflation to 200 mmHg of a blood pressure cuff applied to one lower limb followed by 5-min reperfusion by cuff deflation, from 2018 to 2020 were analyzed. Patients who underwent RAPN for solitary renal tumors without RIPC between 2018 and 2020 were selected as controls. The postoperative estimated glomerular filtration rate (eGFR) at the nadir during hospitalization and the percentage change from baseline were compared using propensity score matching analysis. We performed a sensitivity analysis with imputations for missing postoperative renal function data weighted by the inverse probability of the data being observed. Of the 59 patients with RIPC and 482 patients without RIPC, 53 each were matched based on propensity scores. No significant differences in the postoperative eGFR in mL/min/1.73 m2 at nadir (mean difference 3.8; 95% confidence interval [CI] - 2.8 to 10.4) and its percentage change from baseline (mean difference 4.7; 95% CI - 1.6 to 11.1) were observed between the two groups. Sensitivity analysis also indicated no significant differences. No complications were associated with the RIPC. In conclusion, we found no significant evidence of the protective effect of RIPC against renal dysfunction after RAPN. Further research is required to determine whether specific patient subgroups benefit from RIPC.Trial registration number: UMIN000030305 (December 8, 2017).
Journal of robotic surgery. 2023 May 22 [Epub ahead of print]
Kenji Omae, Tsunenori Kondo, Shingo Fukuma, Tatsuyoshi Ikenoue, Daisuke Toki, Hidekazu Tachibana, Toshihide Horiuchi, Ryo Ishiyama, Maki Yoshino, Yudai Ishiyama, Shunichi Fukuhara, Kazunari Tanabe, Toshio Takagi
Department of Innovative Research and Education for Clinicians and Trainees (DiRECT), Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan. ., Department of Urology, Tokyo Women's Medical University Adachi Medical Center, Tokyo, Japan., Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan., Department of Urology, Tokyo Women's Medical University, Tokyo, Japan., Section of Clinical Epidemiology, Department of Community Medicine, Kyoto University, Kyoto, Japan., Robotic Surgery/Organ Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan.