Skip to main content

Table 2 Intraoperative and postoperative demographics

From: Blood management of staged bilateral total knee arthroplasty in a single hospitalization period

Demographic

Group A (n=33)

Group B (n=37)

pvalue

Duration of surgery* (min)

117.7 (17.1)

121.5 (15.7)

0.336

Drainage volume* (mL)

279.2 (78.0)

458.4 (96.4)

<0.001

Calculated blood loss* (mL)

1227.2 (196.1)

1830.2 (349.6)

<0.001

Hidden blood loss* (mL)

947.9 (200.9)

1371.9 (372.7)

<0.001

Interval days* (d)

3.4 (0.6)

3.6 (0.5)

0.345

Length of stays* (d)

12.4 (1.2)

13.2 (1.5)

0.012

The highest changes of Hb* (g/L)

37.7 (3.8)

47.2 (4.3)

<0.001

The highest changes of Hct* (%)

11.6 (1.4)

15.2 (1.6)

<0.001

HSS score at discharge* (points)

82.1 (5.7)

80.8 (6.8)

0.319

  1. Abbreviations: Hb hemoglobin, Hct hematocrit, HSS Hospital for Special Surgery.
  2. *The values are given as mean ± standard deviation.
  3. Significantly different.