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Neonatale anesthesie

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Thermoregulatie<br />

• neonaten, prematuren en “small for dates” gevoelig aan<br />

hypothermie<br />

• ratio lichaamsoppervlakte/gewicht groot<br />

• weinig subcutaan vet<br />

• mechanismen warmteverlies:<br />

• 1. Radiatie<br />

• 2. Conductie<br />

• 3. Convectie<br />

• 4. Evaporatie<br />

neonaten kunnen niet shiveren<br />

wel “ non-shivering thermogenesis”<br />

Thermoregulatie<br />

non-shivering themogenesis<br />

- bruin vetweefsel<br />

- rond de scapulae, peri-renaal,<br />

mediastinaal<br />

- sterk gevasculariseerd<br />

- sterk bezenuwd (noradrenaline)<br />

- rijk aan mitochondrien<br />

Anesthésie Pediatrique B. Dalens-<br />

F.Veyckemans (Sauramps-Medical 2006)<br />

26

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