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Table 2 Perioperative characteristics

From: No staghorn calculi and none/mild hydronephrosis may be risk factors for severe bleeding complications after percutaneous nephrolithotomy

No. pts (%) Major bleeding complication Mild bleeding complication Severe bleeding complication p
  70 22 48  
OT (min, mean ± SD) 108.5 (39.9) 119.2 (41.7) 103.4 (38.4) 0.127
Corrected intraoperative hemoglobin drop (g/dL, mean ± SD) 20.6 (15.2) 19.8 (18.0) 20.9 (13.9) 0.785
Dilatation type (%)     
Amplatz 51 (72.9) 16 (72.7) 35 (72.9) 0.987
Balloon 19 (27.1) 6 (27.3) 13 (27.1)  
No. renal accesses (%)     
Single 64 (91.4) 20 (90.9) 44 (91.7) 1.000
Multiple 6 (8.6) 2 (9.1) 4 (8.3)  
Pole access (%)     0.697
Upper calyx 0 (0) 0 (0) 0 (0)  
Mid calyx 63 (90) 19 (86.4) 44 (91.7)  
Lowe calyx 1 (1.4) 1 (4.5) 0 (0) 0.314
Multiple calyx 6 (8.6) 2 (9.1) 4 (8.3)  
  1. OT operative time