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Erschienen in: Notfall +  Rettungsmedizin 6/2004

01.10.2004 | Originalien

Blutverlust, Sauerstoffatmung und primäre Hypertonie

verfasst von: Prof. Dr. A. Honig

Erschienen in: Notfall + Rettungsmedizin | Ausgabe 6/2004

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Zusammenfassung

Primär hypertensive Menschen und Tiere haben eine geringere Toleranz zu Beginn einer Hämorrhagie. Sie zeigen bei gleichem Blutverlust einen größeren Blutdruckabfall und verlieren bei Ausbluten auf den gleichen hypotensiven arteriellen Druck mehr Blut, als normotensive Kontrollen. Die Atmung O2-reicher Gasgemische nach Blutverlust kann Kreislauf und Atmung stabilisieren durch
1.
Verengung der Arteriolen,
 
2.
Venokonstriktion und Entleerung der Blutspeicher mit Verbesserung der Herzfüllung,
 
3.
Verstärkung der Lungenventilation durch Korrektur der atmungsdepressiv wirkenden Hirnhypoxie.
 
Diese O2-Effekte sind keine Reflex- sondern direkte Gewebewirkungen, d. h. sie sind auch bei ausgefallener Funktion des Gehirns vorhanden. Sie sind auch an spontan hypertensiven Ratten nachweisbar, aber schwächer als bei normotensiven Tieren.
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Metadaten
Titel
Blutverlust, Sauerstoffatmung und primäre Hypertonie
verfasst von
Prof. Dr. A. Honig
Publikationsdatum
01.10.2004
Verlag
Springer-Verlag
Erschienen in
Notfall + Rettungsmedizin / Ausgabe 6/2004
Print ISSN: 1434-6222
Elektronische ISSN: 1436-0578
DOI
https://doi.org/10.1007/s10049-004-0680-8

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