Robotic-assisted partial nephrectomy provides better operative outcomes as compared to the laparoscopic and open approaches: results from a prospective cohort study

The objective of this is to compare the surgical outcomes of partial nephrectomy (PN), performed via three different approaches: robot-assisted (RAPN), laparoscopic (LPN), and open (OPN), in a single non-academic regional center. The data of patients undergoing PN at our Department from 2005 to 2016 were prospectively collected. A logistic regression model adjusted for preoperative variables (age, tumor size, creatinine and hemoglobin, ASA and Padua scores) was performed to evaluate whether transfusion, conversion, and postoperative complication rate were influenced by the surgical approach. Overall 270 patients underwent PN: analysis included 253 cases (RAPN = 110, LPN = 70, OPN = 73). Preoperative variables did not differ significantly among the three groups. Shorter operative (130 vs 180 and 200′) and ischaemia (12 vs 23 and 22′) times and longer hospital stay (8 vs 7 and 6 days) were found in the OPN group as compared to LPN and RAPN, respectively. The RAPN group included a higher rate of pT1b (31.8 vs 14.2 and 15%) and malignant histotype (90 vs 82.9 and 68.5%) as compared to LPN and OPN, respectively. Clavien Grade III–IV complications were lower in the RAPN (7.2%) as compared to OPN (12.3%) and LPN (17.1%) groups. Multivariate analysis showed a lower risk for conversion, transfusion and overall complications in the RAPN group versus LPN and OPN. The surgical approach affects the perioperative outcomes in a regional setting. The advantages of RAPN over OPN (lower risk of conversion, transfusion, and overall complications) are extended over LPN as well, although OPN offered faster operative and ischemia times at the expense of greater blood loss and hospital stay.