Carbon Monoxide Poisoning Quiz

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Reviewed By:

Maxwell J. Nanes

Maxwell J. Nanes, DO (Emergency department)

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

From our team of 50+ doctors

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Learn more about Carbon monoxide poisoning

Content updated on Sep 20, 2022

What is carbon monoxide poisoning?

Carbon monoxide poisoning usually occurs from breathing in carbon monoxide (CO) gas at excessive levels. This gas can be caused by vehicle exhaust or gas leaks in a home or worksite. Large exposures can result in loss of consciousness, arrhythmias, seizures, or death.

Symptoms of carbon monoxide poisoning

  • Headache

  • Nausea or vomiting

  • Losing consciousness

  • Dizziness

  • Sensation of imbalance as if floating when at sea

  • Forehead pain

  • Poor vision

  • Excessively sleepy or falling asleep in the day

Questions your doctor may ask to check for carbon monoxide poisoning

Your doctor may ask these questions to diagnose carbon monoxide poisoning

  • Do you have headaches or does your head feel heavy?

  • Do you have nausea or vomiting?

  • Have you currently regained consciousness after temporarily losing consciousness?

  • Are you feeling dizzy right now?

  • Do you feel like you are floating / off-balance like you are at sea?

Treatment for carbon monoxide poisoning

Immediate treatment in a hospital is required. Treatment involves breathing pure oxygen by mask or, in some more severe cases, a hyperbaric chamber in which the air pressure and oxygen content is about two to three times higher than normal.

View the symptoms of Carbon monoxide poisoning


  • Rose JJ, Wang L, Xu Q, McTiernan CF, Shiva S, Tejero J, Gladwin MT. Carbon Monoxide Poisoning: Pathogenesis, Management, and Future Directions of Therapy. Am J Respir Crit Care Med. 2017 Mar 1;195(5):596-606. doi: 10.1164/rccm.201606-1275CI. Erratum in: Am J Respir Crit Care Med. 2017 Aug 1;196 (3):398-399. PMID: 27753502; PMCID: PMC5363978.

  • Chenoweth JA, Albertson TE, Greer MR. Carbon Monoxide Poisoning. Crit Care Clin. 2021 Jul;37(3):657-672. doi: 10.1016/j.ccc.2021.03.010. PMID: 34053712.

  • Wu PE, Juurlink DN. Carbon monoxide poisoning. CMAJ. 2014 May 13;186(8):611. doi: 10.1503/cmaj.130972. Epub 2014 Jan 6. PMID: 24396094; PMCID: PMC4016057.

  • Macnow TE, Waltzman ML. Carbon Monoxide Poisoning In Children: Diagnosis And Management In The Emergency Department. Pediatr Emerg Med Pract. 2016 Sep;13(9):1-24. Epub 2016 Sep 2. PMID: 27547917.

  • Weaver LK. Clinical practice. Carbon monoxide poisoning. N Engl J Med. 2009 Mar 19;360(12):1217-25. doi: 10.1056/NEJMcp0808891. PMID: 19297574.

Reviewed By:

Maxwell J. Nanes

Maxwell J. Nanes, DO (Emergency department)

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

From our team of 50+ doctors

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD


Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD


Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

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