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Table 2 Operative Characteristics

From: Mild volume acute normovolemic hemodilution is associated with lower intraoperative transfusion and postoperative pulmonary infection in patients undergoing cardiac surgery -- a retrospective, propensity matching study

Characteristics

ANH

 

Yes (n = 354)

No (n = 354)

p-value

ANH [mean (SD); mL]

342 ± 138

  

Operative Characteristics

 Intra-aortic balloon pump, no. (%)

1 (0.3%)

1 (0.3%)

1.000

 Duration of anesthesia [mean (SD); min]

297 ± 98

305 ± 110

0.325

 Duration of surgery [mean (SD); min]

252 ± 89

260 ± 110

0.244

 CPB time [mean (SD); min]

125 ± 59

129 ± 63

0.399

Type of surgery, no. (%)

  

0.168

 CABG

23 (6.5%)

30 (8.5%)

 

 Valve surgery

137 (38.7%)

121 (34.2%)

 

 Complex cardiac surgery

116 (32.8%)

126 (35.6%)

 

 Aortic surgery

24 (6.8%)

13 (3.7%)

 

 Others surgery

54 (15.3%)

64 (18.1%)

 

Input and Output

 Blood loss [mean (SD); mL]

684 ± 355

678 ± 514

0.855

 Urine output [mean (SD); mL]

788 ± 465

730 ± 419

0.084

 Pump blood [mean (SD); mL]

512 ± 129

508 ± 139

0.708

 Cell salvage [median (SD); mL]

375 ± 267

369 ± 343

0.797

 Intraoperative cristalloids and colloids [mean (SD); mL]

2272 ± 610

2140 ± 770

0.011

Hemostatic drugs Characteristics

 Tranexamic Acid, no. (%)

121 (34.2%)

113 (31.9%)

0.523

 Prothrombin Complex Concentrate, no. (%)

6 (1.7%)

7 (20%)

0.780

 Fibrinogen concentrate, no. (%)

6 (1.7%)

10 (2.8%)

0.312

 Recombinant activated factor VII, no. (%)

1 (0.3%)

3 (0.8%)

0.624

Arterial blood gas analysis

 Calcium content Pre-CPB [mean (SD); mmol/L]

1.08 ± 0.10

1.08 ± 0.09

0.871

 Blood pH Pre-CPB [mean (SD)]

7.40 ± 0.06

7.39 ± 0.05

0.636

 Hct Pre-CPB [mean (SD);%]

38 ± 5

40 ± 5

<0.001

 Calcium content End ± CPB [mean (SD); mmol/L]

0.90 ± 0.13

0.87 ± 0.13

0.086

 Blood pH End-CPB [mean (SD)]

7.48 ± 0.08

7.50 ± 0.09

0.055

 Hct End-CPB [mean (SD);%]

25 ± 4

27 ± 5

0.003

 Calcium content Post ± CPB [mean (SD); mmol/L]

1.03 ± 0.17

1.02 ± 0.15

0.628

 Blood pH Post-CPB [mean (SD)]

7.37 ± 0.07

7.38 ± 0.08

0.168

 Hct Post ± CPB [mean (SD);%]

29 ± 4

30 ± 5

0.021

  1. #: Fisher’s exact test was used; CPB cardiopulmonary bypass, CABG coronary artery bypass grafting, Valve surgery aortic, mitral and tricuspid valve surgery without ascending aortic replacement, Complex cardiac surgery combined coronary artery bypass graft surgery and valve surgery or multi-valve surgery, Aortic surgery aortic dissections, type A and B, thoracic aortic aneurysms) or Aortic valve surgery with ascending aortic replacement; Others surgery type including atrial septal defect, interventricular septal defect, atrial myxoma, Aneurysm Sinus Valsalva, coronary artery pulmonary artery fistula, patent foramen ovale/atrial septal aneurysm surgery, and surgery for cardiac tumors, Pumped blood blood recovered from the extracorporeal circuit system, CPB cardiopulmonary bypass, Hb hemoglobin, Hct hematocrit, Pre-CPB before CPB and after performing ANH, End-CPB at the end of CPB, Post-CPB 30 min after CPB
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BMC Anesthesiology

ISSN: 1471-2253

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