Carbon monoxide

CAS RN: 630-08-0

Laboratory

A) Monitor vital signs and mental status and perform a Mini-Mental State Exam.
B) Carboxyhemoglobin level from either venous or arterial blood should be obtained as soon as possible after arrival. Nonsmokers generally have carboxyhemoglobin levels of less than 2%, while chronic smokers will routinely have levels of carboxyhemoglobin between 6% to 10%.
C) Arterial or venous blood gas may be needed in moderate to severe poisonings to assess the adequacy of oxygenation, ventilation, and the acid-base status.
D) Obtain lactate and serum electrolyte levels in patients with moderate to severe poisoning. Obtain a pregnancy test.
E) Obtain an ECG in adult patients, and measure cardiac enzymes in patients if cardiac injury is suspected.
F) CT of the brain is indicated if there are signs or symptoms of cerebral edema or coma or if there is a persistent abnormal neurologic exam.
G) Fetal monitoring should be performed in pregnant patients.
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