The most common cause of toxicity is faulty heating devices in the home. There are also occasions when cooking instruments such as charcoal grills are improperly used within the home. Symptoms are generally nonspecific and the diagnosis may not be apparent. A high index of suspicion is required, especially when furnaces and fireplaces are in use. Symptoms include lightheadedness or dizziness, headache, malaise drowsiness, nausea and vomiting.
Severe toxicity can lead to seizures, coma, myocardial infarction and even death.
Recently treatment has been controversial. A symptomatic patient may require hyperbaric oxygen therapy. All patients with CO toxicity should be treated with 100 percent oxygen using a non-rebreathing mask. A blood sample, drawn as soon as possible in a green top tube, is also helpful. Medical Control can help you decide whether direct transport to a hospital is warranted.