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Studies on acute hyperbaric pulmonary oxygen toxicity

A pathophysiological study was made of spontaneously breathing dogs anaesthetised by a neurolept-analgesic technique and exposed to 100% oxygen at 2 ATA to demonstrate the time-course and mechanism of response. The animals remained apparently normal for some 18 hours, following which the majority developed a fulminating intra-alveolar oedema and died of hypoxaemia within a few hours. There was no evidence of systemic nor pulmonary capillary hypertension, and electron microscopy demonstrated complete absence of damage to the endothelial and Type 1 epithelial cells of the alveolar septum. Changes were detected in the Type 2 cells, and oedemagenesis was attributed to an oxygen-induced depression of surfactant activity.

Identiferoai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:472481
Date January 1976
CreatorsShields, Thomas Gillies
PublisherUniversity of Glasgow
Source SetsEthos UK
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation
Sourcehttp://theses.gla.ac.uk/1048/

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