23 1 / 2012

(These totally vary by center.)

  • Level > 25%
  • Level > 15% (if pregnant)
  • Fetal Distress
  • Syncope
  • Coma
  • Acidosis
  • Age > 60
  • Neuro Findings
  • Children
  • Cardiovascular Disease
  • Headache or Chest Pain
  • Maybe Prevents Delayed Neuro Sequelae (Conflicting Data):

  • Numbness

  • Paralysis
  • Paresthesias
  • Basal Ganglia Infarcts
  • And Psych Sequelae:

  • Cloudy thoughts

  • Trouble concentrating
  • Amnesia
  • Depressed Mood
  • Remember, all tubes (foley, eg) must be filled with water, not air!

22 1 / 2012

HbCO levels often do not reflect the clinical picture, yet symptoms typically begin with headaches at levels around 10%. Levels of 50-70% may result in seizure, coma, and fatality.

CO is eliminated through the lungs.

  • Half-life of CO at room air temperature is 3-4 hours.
  • One hundred percent oxygen reduces the half-life to 30-90 minutes;
  • Hyperbaric oxygen at 2.5 atm with 100% oxygen reduces it to 15-23 minutes.