Clinical features

• symptoms of carbon monoxide poisoning ^c
  • headache
  • dizziness
  • GI dysfunction
  • difficulty in thinking
  • loss of consciousness
  • neurological symptoms (visual disturbances, focal neurological signs, seizures)

Headache, dizziness or muscle weakness are common in CO poisoning

Clinical feature c	Sensitivity (95% CI)
headache	84% (81% to 87%)
dizziness and/or muscle weakness	78% (75% to 81%)
gastrointestinal dysfunction	53% (49% to 56%)
difficulty in thinking	44% (36% to 51%)
loss of consciousness	34% (30% to 37%)
acute confusional state	16% (11% to 21%)
coma	13% (10% to 16%)
paraesthesia	7.9% (4.0% to 11%)
focal neurological deficits	6.8% (3.2% to 10%)
visual disturbance	6.8% (3.2% to 10%)
palpitations	5.8% (2.5% to 9.1%)
seizures	2.9% (1.6% to 4.2%)