Skip to main content

Table 1 Patient demographic characteristics

From: Hidden blood loss in adolescent idiopathic scoliosis patients undergoing posterior spinal fusion surgery: a retrospective study of 765 cases at a single centre

Parameters Statistic
Total patients 765
Gender(M/F) 128/637
Age 14.5 ± 1.7
Weight, kg 47.9 ± 7.9
Height, cm 161.2 ± 8.0
Total blood loss, ml 1285.7 ± 437.5
Intraoperative blood loss, ml 926.8 ± 521.1
Hidden blood loss, ml 693.5 ± 473.4
Postoperative drainage, ml 464.2 ± 200.2
Change of Hct(%) 11.0 ± 10.9
Intraoperative transfusion volume, ml 672.4 ± 657.1
Postoperative transfusion volume, ml 126.5 ± 242.9
Change of Hb, g/L 36.8 ± 13.9
Mean operation time, min 250.1 ± 60.5
Mean BMI, kg/m2 18.4 ± 2.8