Carbon monoxide poisoning is produced by the incomplete
combustion of carbon containing fuels
such as gas, coal, oil, wood and coke. Headache is the most common symptom
(90%) followed by nausea & vomitting, vertigo, alteration in consciousness and weakness. The cherry red skin colour occurs when COHb concentration exceeds
20% but it is rarely seen in life.
Pulse oximetry gives falsely high oxygen saturation sand it is not recommended.
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