Cyanosis: Understanding Skin Discoloration Due to Low Oxygen
Cyanosis is a bluish/purplish skin/mucous membrane discoloration from poorly oxygenated blood. It signals serious conditions:
- Cyanotic heart defects: Structural heart issues prevent oxygenated blood circulation.
- Lung disease: COPD, asthma, pneumonia impair oxygenation.
- Methemoglobinemia: Hemoglobin can't carry oxygen.
- Carbon monoxide poisoning: CO binds hemoglobin, blocking O2.
- Hypothermia: Low body temperature.
Seek emergency care immediately if cyanosis appears.
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