Associationbetween hyperoxia and mortality in severely burned patients

Area of Science:

• Critical Care Medicine
• Burn Surgery
• Toxicology

Background:

• Oxygen is crucial in burn resuscitation, especially for inhalation injuries and carbon monoxide toxicity.
• Previous research in critically-ill patients suggests a link between early hyperoxia and increased mortality.
• Limited data exists on the effects of excessive oxygen in burn patients.

Purpose of the Study:

• To analyze oxygen administration in severely burned patients.
• To investigate the association between early supratherapeutic oxygen exposure and mortality or ventilator-associated pneumonia (VAP).
• To assess the impact of carbon monoxide exposure on outcomes.

Main Methods:

• Retrospective analysis of 219 severely burned patients.
• Quantified oxygen use, carbon monoxide exposure levels, and incidence of VAP.
• Adjusted models for inhalation injury and total body surface area (TBSA) burned.

Main Results:

• Early hyperoxia was common in burn patients, with inconclusive associations with overall mortality.
• After adjusting for burn severity, a negative correlation between hyperoxia and mortality was observed.
• Confirmed carbon monoxide poisoning was infrequent but linked to higher mortality; patients with elevated carboxyhemoglobin did not receive more oxygen.

Conclusions:

• Burn patients receive higher oxygen concentrations than other critically-ill patients, often empirically for carbon monoxide poisoning.
• Liberal oxygen therapy is prevalent, highlighting potential risks associated with hyperoxia.
• Further research or clearer clinical indications for oxygen use in burn patients are needed.