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Table 1 Arterial blood gas changes during blood withdrawal and transfusion

From: Monitoring the tissue perfusion during hemorrhagic shock and resuscitation: tissue-to-arterial carbon dioxide partial pressure gradient in a pig model

 

Status of circulating blood volume

 

BL

BW10

BW20

BW30

BT10

BT20

BT30

pH

7.51 ± 0.05

7.54 ± 0.04

7.50 ± 0.03

7.52 ± 0.08

7.46 ± 0.05

7.45 ± 0.05

7.43 ± 0.07*

artPCO2, mmHg

46.3 ± 6.1

44.6 ± 4.5

44.6 ± 5.0

40.6 ± 10.6

49.0 ± 4.6

50.0 ± 5.8

55.0 ± 10.3

artPO2, mmHg

267.3 ± 8.3

267.3 ± 6.2

275.2 ± 30.3

268.0 ± 18.1

246.2 ± 14.3*

248.3 ± 17.1

218.3 ± 42.5a

HCO3−, mmol/L

36.8 ± 1.8

37.0 ± 2.0

35.1 ± 1.6

34.4 ± 2.0

35.0 ± 3.2

34.6 ± 1.9*

36.3 ± 3.2

BE, mmol/L

12.4 ± 2.1

13.0 ± 1.9

11 ± 1.0

10.7 ± 2.9

10.1 ± 3.5

9.6 ± 2.4

10.7 ± 3.3

  1. BL, Baseline; BW10, 10 mL/kg of blood withdrawal; BW20, 20 mL/kg of blood withdrawal; BW30, 30 mL/kg of blood withdrawal; BT10, 10 mL/kg of blood transfusion; BT20, 20 mL/kg of blood transfusion; BT30, 30 mL/kg of blood transfusion; pH, arterial pH; artPCO2, partial pressure of arterial carbon dioxide; artPO2, partial pressure of arterial oxygen; HCO3−, arterial bicarbonate; BE, arterial base excess
  2. *P < 0.05, aP < 0.01 vs. baseline