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samenvatting cardiochirurgie VRHv6

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samenvatting van het onderdeel cardiochirurgie binnen de module verpleegkundig redeneren en handelen verdiepend 6 binnen de opleiding verpleegkunde aan de Arteveldehogeschool

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Samenvatting cardiochirurgie

HARTLONGMACHINE




- Fun
ctie:
 Overnemen pompwerking hart
 Overnemen gasuitwisselingsfunctie longen
 Mogelijkheid tot opwarmen/afkoelen bloed en pt
 Mogelijkheid tot opzuigen & tijdelijk stockeren bloed
- Onderdelen:
 Pomp:
 Roller- of centrifugaal
 Neemt pompfunctie linker hartkamer over
 Oxygenator:
 Membraan
 Zorgt voor gasuitwisseling: O2/CO2
 Warmtewisselaar:
 Laat koelen en opwarmen pt toe
 Cannules en tubing:
 Maken verbinding tussen toestel en pt
 Reservoirs en filters
 Gesloten:
 Geen bloed-lucht interface
 Vermijd doorpompen van lucht

1

,  Open:
 Hogere capaciteit
 Incorporeren filter
 Gemakkelijk volume meten

- Vereisten voor de werking:
 Priming:
 Hele machine + tubing vullen met vloeistof
 Bloed, plasmavervangers of fysiologische zoutoplossing
 Aankoppelen zonder “aderlating”
 Hemodilutie (hct=20) maakt bloed minder stroperig bij lage temperaturen
 Heparine + protamine:
 3mg/kg IV
 Maakt bloed volledig ontstolbaar met ACT > 400 sec

- Myocardprotectie:
 Bescherming van het hart tegen schade door ischemie
 Topical cooling:
 Koude fysiologische zoutoplossing of ijssludge rondom het hart
 Cardioplegie: inspuiten koude cardioplegische/hartverlammende vloeistof in
kransslagaders
 Hypothermie + fibrilatie
 Intermittente klem / fibrillatie en reperfusie
 Cristaloïde cardioplegie
 Bloedcardioplegie
 Elektro-mechanische stilstand
 Koude temperatuur:
 Voor elke daling 10°C => 50% minder metabolisme
 Afwezigheid distentie

CABG
- Coronair Sclerose:
 Etiologie:
 Atheromatose/verkalking van de kransslagaders
 Fysiopathologie:
 Vernauwingen in kransslagaders geven ischemie van de hartspier
 Klinische symptomen:
 Angina pectoris
 Hartinfarct
 Diagnose:
 ECG
 Fietsproef
 Scintigrafie
 Coronarografie!

2

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December 26, 2021
Number of pages
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