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Table 3 The results of measured blood loss information

From: Comparison of the total and hidden blood loss in patients undergoing single-level open and unilateral biportal endoscopic transforaminal lumbar interbody fusion: a retrospective case control study

Variable

ULIF

O-TLIF

P-value

Duration of drainage (day)

2.21 ± 0.41

2.64 ± 0.92

0.003*

Total amount of postoperative drainage (ml)

97.09 ± 73.30

219.06 ± 140.13

0.000*

Drainage of first postoperative day (ml)

57.08 ± 39.61

124.91 ± 71.92

0.000*

Drainage of second postoperative day (ml)

33.79 ± 31.67

61.40 ± 35.30

0.000*

Drainage of third postoperative day (ml)

30.00 ± 16.73

49.04 ± 25.30

0.029*

Intraoperative blood loss (ml)

/

85.38 ± 23.20

/

  1. Open transforaminal lumbar interbody fusion O-TLIF, Unilateral biportal endoscopic transforaminal lumbar interbody fusion ULIF
  2. Data are mean ± standard deviation; *P < 0.05