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Table 3 Surgical, pathological and functional outcomes for RACP-RASE and RASE before and after propensity-score matching

From: Functional and oncologic outcomes of robot-assisted simple enucleation with and without renal arterial cold perfusion in complex renal tumors: a propensity score-matched analysis

  Pre-matching Post-matching
RACP-RASE, n = 31 RASE, n = 320 p Value RACP-RASE, n = 29 RASE, n = 29 p Value
Operative time, min, mean ± SD 262.6 ± 57.1 175.6 ± 45.5 0.000 264.1 ± 55.7 206.9 ± 64.0 0.001
Ischemic time, min, mean ± SD 35.9 ± 10.8 22.8 ± 7.3 0.000 34.8 ± 9.4 32.8 ± 7.2 0.342
Estimated blood loss, ml, mean ± SD 212.6 ± 94.2 179.1 ± 123.6 0.005 208.3 ± 93.8 230.7 ± 135.7 0.696
Entry into sinus (n, %) 19 (61.3%) 63 (19.7%) 0.000 17 (58.6%) 14 (48.3%) 0.430
Conversions (n, %)       
 Open conversion 0 (0.0%) 2 (0.6%) 1.000 0 (0.0%) 0 (0.0%)
 Radical conversion 1 (3.2%) 6 (1.9%) 1.000 1 (3.4%) 1 (3.4%) 1.000
Length of stay, d, mean ± SD 7.9 ± 1.4 7.9 ± 2.0 0.429 7.8 ± 1.4 8.6 ± 2.3 0.370
Postoperative complications (n, %) 4 (12.9%) 35 (10.9%) 0.973 4 (13.8%) 7 (24.1%) 0.315
 Clavien 1–2 4 (12.9%) 31 (9.7%)   4 (13.8%) 6 (20.7%)  
 Clavien 3–4 0 (0.0%) 4 (1.3%)   0 (0.0%) 1 (3.4%)  
Tumor histology (n, %)    1.000    0.703
 Malignant 28 (90.3%) 286 (89.4%)   26 (89.7%) 24 (82.8%)  
 Benign 3 (9.7%) 34 (10.6%)   3 (10.3%) 5 (17.2%)  
Positive margins (n, %) 1 (3.2%) 5 (1.6%) 1.000 1 (3.4%) 0 (0.0%) 1.000
Postoperative eGFR, ml/min/1.73m2, median (IQR)       
 3 months 93 (73–108) 92 (79–110) 0.670 93 (74–107) 84 (60–105) 0.287
 12 months 88 (73–114) 93 (81–112) 0.453 88 (77–108) 80 (61–98) 0.186
Acute renal injury (n, %) 1 (3.2%) 3 (0.9%) 0.795 0 (0.0%) 1 (3.4%) 1.000
Postoperative change in eGFR, %, median (IQR)       
 3 months  − 6.3 (− 11.3 to − 2.4)  − 3.2 (− 19.4 to − 2.3) 0.849  − 6.3 (− 10.3 to − 2.4)  − 12.0 (− 17.5 to − 6.7) 0.018
 12 months  − 5.8 (− 15.5 to 1.9)  − 2.0 (− 17.4 to 10.0) 0.551  − 5.8 (− 12.7 to 0.1)  − 11.7 (− 18.9 to − 4.0) 0.038
CKD upstaging n (%) 6 (19.4%) 68 (21.3%) 0.805 5 (17.2%) 12 (41.4%) 0.043
  1. Bold indicated that the p value was statistically significant