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Table 2 Perioperative data, complications and follow-up

From: Modified R.E.N.A.L nephrometry score for predicting the outcome following partial nephrectomy

Operative time (h) 3 ± 0.7 (1.75–5)
Ischemia type: warm ischemia/zero ischemia 40 (78.4%)/11 (21.6%)
WIT (min) 15.1 ± 9.8 (0–40)
PCS entry 26 (51%)
Blood transfusion 9 (17.6%)
Blood loss (ml) 250 (50–1500)
Conversion to radical nephrectomy 4 (7.8%)
Post-Op Hb (gm/dl) 11.8 ± 1.8 (7.1–15.8)
Hb loss (gm/dl) 1 (0.10–5.3)
Perioperative complicationsa 17 (33.3%)
 Grade I  
  Fever 7 (13.7%)
 Grade II  
  Blood transfusion 9 (17.6%)
  Leakage (conservative) 1 (2%)
  Perinephric collection and leak (conservative) 1 (2%)
 Grade III  
  Leak (endoscopic stenting) 3 (5.88%)
  Perinephric collection and leak (endoscopic stenting) 1 (2%)
  AVF (Embolization) 2 (3.9%)
  Ureteric injury 2 (3.9%)
  Renal artery thrombosis/intimal injury 2 (3.9%)
Drain removal/length of hospital stay (days) 5 (3–28)/5 (3–29)
Pathological T  
 Benign 11 (21.6%)
 1a/1b 9 (17.6%)/17 (33.3%)
 2a/2b 8 (15.7%)/5 (5.9%)
 3a 1 (2%)
Histologic type  
  Clear cell 26 (51%)
  Papillary/chromophobe/esinophilic 6 (11.8%)/7 (13.7%)/1 (2%)
  Benign lesions: (AML/oncocytoma) 11 (21.56%)
Fuhrman grade: I/II/III 18 (35%)/21 (41.2%)/1 (2%)
Positive surgical margin 3 (5.9%)
Post-Op eGFR 3 mo (ml/min/1.73 m2) 77.7 ± 22.1 (21.8–130)
  1. Values are presented as mean ± SD (range), median (range) or number of patients (%) as appropriate
  2. AML angiomyolipoma, AVF arteriovenous fistula, eGFR estimated glomerular filtration rate, Hb hemoglobin, PCS pelvi-calyceal system, Post-Op postoperative, WIT warm ischemia time
  3. aAccording to Clavien-Dindo classification system