Page 83 - Color Atlas Of Pathophysiology (S Silbernagl Et Al, Thieme 2000)

A. Effects of Abnormal Distribution on O 2 Uptake and CO 2 Release
Arterial
[O 2 ] blood % 20 Venous Normal [O 2 ] Normal

PA O 2 (kPa) 100 Hyper- Hypo- PA O 2
ventilated ventilated
[CO 2 ] blood % 25 Normal [CO 2 ] Normal Distribution Abnormalities

40
PA CO 2 (kPa) PA CO 2

[CO 2 ] blood Normocapnia
[O 2 ] Plate 4.4

Hypoxemia PA O 2 PA CO 2
B. Development of Atelectasis
Normal ventilation
1
With air O 2 14% 2
CO 2 5% With oxygen O 2 89%
N 2 75% CO 2 5%
H 2 O 6% H 2 O 6%

O 2 CO 2 N 2
O 2 5%
6%
CO 2
N 2 76%
H 2 O 6%
After blockage

Normal
O 2 difference
Large
O 2 difference

Alveolus shrinks slowly
Alveolus shrinks rapidly 73

Silbernagl/Lang, Color Atlas of Pathophysiology © 2000 Thieme
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