Carbon monoxide confusion caused

Effects Carbon monoxide causes tissue hypoxia. Headache is one of the first symptoms, followed by confusion, decreased visual acuity, tachycardia, syncope, coma, convulsions, and death. Collapse and syncope occur when approximately 40% of hemoglobin has been converted to carboxyhemoglobin. These adverse effects may be aggravated by high ambient temperature and high altitude. 

B. Asphyxia and systemic intoxicants may cause dizziness, confusion, syncope, seizures and coma. In addition, carbon monoxide (see p 151), cyanide poisoning (p 177), and methemoglobinemia (p 261) have been documented in victims of smoke inhalation. 

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