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DOI: 10.1055/a-2181-1018
Pathophysiologie der Sepsis
Die Sepsis ist noch immer eines der bedrohlichsten Krankheitsbilder der modernen Medizin mit einer hohen Mortalitätsrate. Das zunehmende Wissen um die Komplexität und Heterogenität der septischen Immunpathologie kann Wege eröffnen, zukünftig Sepsispatienten individueller – und somit erfolgreicher – behandeln zu können. Dieser Beitrag stellt den aktuellen Kenntnisstand der Pathophysiologie der Sepsis und des septischen Schocks dar.
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Sepsis ist definiert als eine schwerwiegende dysregulierte Immunantwort auf dem Boden einer Infektion, aus der eine Endorganstörung resultiert.
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Im Zentrum der septischen Pathophysiologie steht zu Beginn ein sog. Zytokinsturm, der maßgeblich durch die Antwort des angeborenen Immunsystems getragen wird. Im Verlauf kann sich eine eher immunparalytische Situation einstellen.
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Exogene PAMPs und endogene DAMPs aktivieren sog. PRRs, welche mannigfaltige Downstream-Pathways aktivieren und die weitere Immunantwort bahnen.
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Die Sepsis ist weder ein reines pro- noch antiinflammatorisches Krankheitsbild. Vielmehr laufen pro- und antiinflammatorische Prozesse stets parallel zueinander ab, sodass die immunologische Gesamtsituation je nach Ausprägungsgrad der einzelnen Komponenten patientenindividuell und zeitabhängig deutlich differiert.
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Der septische Schock zeichnet sich durch eine kombinierte Störung sowohl der Makro- als auch der Mikrozirkulation aus. Die hieraus resultierenden Oxygenierungsstörungen bedingen die sepsisdefinierenden Endorganstörungen.
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Das Wissen um die Heterogenität der septischen Immunpathologie muss bei der Konzeption zukünftiger Sepsisstudien sowie der Therapieplanung des individuellen Sepsispatienten Berücksichtigung finden. Das Ziel ist es, eine zunehmende Individualisierung der Sepsistherapie zu erreichen!
Publication History
Article published online:
05 December 2023
© 2023. Thieme. All rights reserved.
Georg Thieme Verlag KG
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