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Table 1 Patient demographics

From: Multi-tract percutaneous nephrolithotomy combined with EMS lithotripsy for bilateral complex renal stones: our experience

Number of patients

27

Number of renal unit treated

54

Age, years, mean (range)

47.8 (41–63)

Gender, male/female

12/15

Preoperative body temperature, °C, mean (range)

37.0 (36.5–38.6)

Preoperative serum creatinine, umol/L, mean (range)

204.6 (123.4–667.2)

Mean stone size, cm

2.5–8.6

Urological anatomical abnormalities

Ureteropelvic Junction Obstruction (UPJO) 3

Double renal pelvis 2

Other relevant conditions

Obesity 3

Spine deformation 1

Previous stone surgeries

One side 5

Both sides 3