Table 1: Characteristics of patients who had bleeding and blood transfusion.

Gender (M/F)Age (year)Mean stone size (mm)Operation time (minute)Access (lower/middle
/upper pole)
Mean hemoglobin (preop/postop)Mean blood transfusion (unit)Anuria
/oliguria
( )
Mean blood pHHospitalisation time (day)

Patients treated with blood transfusion (n: 55)24/3145 (1–76)39.87 (15–99)84.91 (25–120)42/11/912.98/9.031.77 (0.25–7)147.36 (7.33–7.42)5.3 (3–14)

Patients needed emergent intervention (n: 5)5/—42.2 (19–56)27 (15–38)44.75 (25–65)5/—/—13.3/8.74.4 (3–6)57.21 (7.20–7.25)7.75 (5–10)