Table 1 Perinatal aortic trunk blood variables in the sustained inflation (SI) and dynamic PEEP recruitment (dynPEEP) groups.

From: Pulmonary perfusion with dynamic PEEP recruitment or sustained inflation at birth in preterm lambs

Variable

Group

Fetus

NB 10 min

NB 15 min

NB 30 min

P1

P2

Hb, g·dl-1

SI

12.0 ± 1.4b

11.7 ± 0.8

11.6 ± 1.0

11.4 ± 0.9

0.054

0.608

dynPEEP

12.3 ± 0.8a

12.2 ± 0.8

11.8 ± 0.8

11.7 ± 0.8

0.009

SaO2, %

SI

62.4 ± 9.7c

94.7 ± 7.3

95.8 ± 7.2

96.6 ± 4.9

<0.001

0.621

dynPEEP

59.1 ± 11.8c

95.4 ± 4.2

95.5 ± 2.6

94.4 ± 2.6

<0.001

pH

SI

7.34 ± 0.05c

7.41 ± 0.05

7.38 ± 0.04

7.33 ± 0.05

<0.001

0.161

dynPEEP

7.31 ± 0.03c

7.37 ± 0.05

7.37 ± 0.03

7.33 ± 0.03

0.002

PaO2, mmHg

SI

23.7 ± 4.4c

81.0 ± 51.9

68.4 ± 27.2

61.6 ± 17.5

0.007

0.065

dynPEEP

21.9 ± 3.6c

53.5 ± 27.9

46.3 ± 16.8

43.3 ± 12.5

0.003

PaCO2, mmHg

SI

47.6 ± 6.4c

34.1 ± 5.2

37.5 ± 4.0

42.6 ± 4.4

<0.001

0.186

dynPEEP

50.9 ± 4.4c

38.1 ± 5.6

37.9 ± 4.1

43.3 ± 3.5

<0.001

  1. Values are means ± SD; n = 9 for dynPEEP and n = 7 for SI groups. P1, one-way repeated measures ANOVA, aP = 0.009, bP = 0.005, cP < 0.001, fetal vs. newborn time-points; P2, newborn SI vs. dynPEEP treatment effect, 2-way repeated measures ANOVA.
  2. Hb hemoglobin concentration, SaO2 hemoglobin oxygen saturation, PaO2 oxygen tension, PaCO2 carbon dioxide tension, NB newborn, SI sustained inflation, dynPEEP dynamic PEEP recruitment.