Urine volumes( mL)

Mean ± standard deviation*

Urine volume before surgery

229.33 ± 127.6

Urine volume at 100 mL bleeding volume

279 ± 141.94

Urine volume at 200 mL bleeding volume

299.66 ± 148.67

Urine volume at 300 mL bleeding volume

334 ± 148.73

Urine volume at 400 mL bleeding volume

366 ± 152.26