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Farmacologie van de inhalatie-anesthetica

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Partitiecoëfficiënten (37°)<br />

bloed/<br />

hersenen<br />

lever/<br />

spier/<br />

vet/<br />

olie/<br />

gas /bloed bloed bloed bloed gas<br />

N 2<br />

O 0.47 1.1 0.8 1.2 2.3 1.4<br />

Halothane 2.54 1.9 2.1 3.4 51 224<br />

Enflurane 1.91 1.4 2.1 1.7 36 98.5<br />

Isoflurane 1.46 1.6 1.8 2.9 45 90.8<br />

Desflurane 0.42 1.29 1.31 2.02 27.2 18.7<br />

Sevoflurane 0.69 1.7 1.85 3.13 47.5 53.4<br />

Nitrous oxi<strong>de</strong>: second gas effect &<br />

diffussiehypoxie<br />

• Second gas effect – concentrating effect – concentration<br />

effect<br />

• vrijkomen <strong>van</strong> grote volumes lachgas uit <strong>de</strong> weefsels naar <strong>de</strong><br />

alveolen bij stoppen toediening verdunt <strong>de</strong> concentratie <strong>van</strong><br />

aanwezige O 2 en CO 2

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