Page 213 - Color Atlas Of Pathophysiology (S Silbernagl Et Al, Thieme 2000)

A. Fetal Circulation
Upper half
of body
0,37
O 2
O 2 saturation 78 Lung
(full saturation = 1.0) (not yet
(ml/min) 156 expanded)
approx. flow/kg 13
body weight
0,16 I
Ductus arteriosus
78 Pulmonary artery Pulmonary
vein Shunts
Foramen
ovale
104
0,40 Circulatory
182 0,37 0,30
182
169

0,36 0,6 Plate 7.15
78 130
130
52
Lower half
of body
Portal vein
Umbilical cord
Umbilical arteries Umbilical vein
Placenta
B. Pulmonary Circulation C. Fetal Hypoxic Vasoconstriction
3
Pulmonary artery: Ventricular
1 Blood flow 2 septal defect
(L/min) 1.0
1 Normal
0 0.8
2 Systolic 75 Pulmonary vascular resistance (mmHg·mL –1 ·min) 0.6
pressure 50
(mmHg) 25 0.4
0 0.2
3 Muscle thickness
in vessel wall 0 0 5 10 15 20 25
O 2 pressure in the pulmonary
20 28 36 1 2 3 4 artery (mmHg)
Week of Week after birth
pregnancy Data from fetal lamb 203
(after Rudolph) Birth (after Levine)
Silbernagl/Lang, Color Atlas of Pathophysiology © 2000 Thieme
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