Carbon Monoxide symptoms
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Roanoke County Fire and Rescue news release
Published: July 8, 2008
The concentration of Carbon Monoxide (CO), measured in parts per million (ppm) is a determining factor in the symptoms for an average, healthy adult.
The dangers of CO exposure depend on a number of variables, including the victim’s health and activity level. Infants, pregnant women, and people with physical conditions that limit their body’s ability to use oxygen (i.e. emphysema, asthma, heart disease) can be more severely affected by lower concentrations of CO than healthy adults would be.
A person can be poisoned by a small amount of CO over a longer period of time or by a large amount of CO over a shorter amount of time.
50 ppm: No adverse effects with 8 hours of exposure.
200 ppm: Mild headache after 2-3 hours of exposure.
400 ppm: Headache and nausea after 1-2 hours of exposure.
800 ppm: Headache, nausea, and dizziness after 45 minutes; collapse and unconsciousness after 1 hour of exposure.
1,000 ppm: Loss of consciousness after 1 hour of exposure.
1,600 ppm: Headache, nausea, and dizziness after 20 minutes of exposure.
3,200 ppm: Headache, nausea, and dizziness after 5-10 minutes; collapse and unconsciousness after 30 minutes of exposure.
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