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Table 3 Blood examination, blood loss, and blood transfusion data

From: Investigation of perioperative safety and clinical results of one-stage bilateral total knee arthroplasty in selected low-risk patients

Parameter

n = 67

Hb (g/dl)

 Preoperative

12.8 ± 1.1a

 POD 1

11.0 ± 1.1a

 POD 7

10.2 ± 1.3a

 POD 14

10.6 ± 1.1a

 POD 21

10.8 ± 1.1 (n = 66)a

Postoperative CRP (mg/dl)

 POD 7

3.4 ± 1.7a

 POD 14

1.7 ± 1.5a

 POD 21

1.0 ± 1.2 (n = 66)a

 D-dimer level 7 days after surgery (μg/ml)

13.4 ± 6.1 (n = 65)

Blood loss (ml)

 Drained

617.3 ± 362.6

 Total

1139.5 ± 365.7

Transfusions

 Transfusion rate (%)

95.5

 Autologous (ml)

310.4 ± 168.0

 Allogeneic (units)

0.4 ± 0.8

 Amount of Hb (g)

51.7 ± 10.2

  1. Hb hemoglobin, POD postoperative day, CRP C-reactive protein
  2. Results are presented as mean ± standard deviation
  3. aSignificant difference between the time points (P < 0.05)