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Table 3 Perioperative blood parameters of the patients

From: Hypocalcemia was associated with increased perioperative blood loss and blood transfusion in elderly patients with hip fracture: a retrospective study

 

Normocalcemia (n = 406)

Hypocalcemia (n = 276)

P value

Anemia on admission, n (%)

225 (55.42)

238 (86.23)

< 0.001

 Mild

201 (49.51)

190 (68.84)

< 0.001

 Moderate

24 (5.91)

40 (14.49)

< 0.001

 Severe

0 (0.00)

8 (2.90)

0.002

TBV (L)

3.59 ± 0.52

3.67 ± 0.57

0.060

TBL values (ml)

   

 TBLpost1

640.31 ± 398.83

714.91 ± 396.05

0.016

 TBLpost5

859.92 ± 434.99

1035.87 ± 528.77

< 0.001

 ΔTBL

219.61 ± 356.65

324.99 ± 265.40

< 0.001

Transfusion rate, n (%)

   

 Preoperative

88 (21.67)

90 (32.61)

0.002

 Postoperative

13 (3.20)

22 (7.97)

0.009

 Perioperative

91 (22.41)

100 (36.23)

< 0.001

Transfusion volume (ml)

   

 Preoperative

486.36 ± 151.00

566.67 ± 385.12

0.068

 Postoperative

430.77 ± 75.11

536.36 ± 191.60

0.028

 Perioperative

531.87 ± 207.03

620.00 ± 396.96

0.053

Hb values (g/L)

   

 Admission day

120.42 ± 19.63

106.27 ± 18.46

< 0.001

 Postoperative day 1

105.99 ± 18.72

87.49 ± 13.65

< 0.001

 Postoperative day 5

99.33 ± 16.58

83.00 ± 12.96

< 0.001

 ΔHb1

14.43 ± 12.47

18.70 ± 16.20

< 0.001

 ΔHb5

21.10 ± 13.68

23.27 ± 16.52

0.072

Hct values (%)

   

 Admission day

37.10 ± 5.79

32.83 ± 5.58

< 0.001

 Postoperative day 1

32.56 ± 5.61

26.33 ± 4.07

< 0.001

 Postoperative day 5

30.61 ± 4.83

25.06 ± 3.90

< 0.001

 ΔHct1

4.54 ± 3.72

6.50 ± 4.89

< 0.001

 ΔHct5

6.49 ± 4.20

7.70 ± 5.04

0.001

  1. TBLpost1 was total blood loss on the postoperative day 1; TBLpost5 was total blood loss on the postoperative day 5; ΔTBL was difference from postoperative day 1 to postoperative day 5; ΔHb1, ΔHct1 was difference from admission to postoperative day 1; ΔHb5, ΔHct5 was difference from admission to postoperative day 5
  2. TBV, total blood volume; TBL, total blood loss; Hb, hemoglobin; Hct, hematocrit