T58.11

Clinical Causes: Faulty or poorly maintained gas appliances, such as furnaces, water heaters, or stoves Incomplete combustion of natural gas, propane, or other utility gases Blocked or inadequate ventilation in enclosed spaces Use of gas-powered equipment in enclosed or poorly ventilated areas Gas leaks from pipelines or appliances due to damage or improper installation Smoke inhalation from fires involving utility gas systems

Key Symptoms: Headaches Dizziness or lightheadedness Weakness and fatigue Nausea or vomiting Shortness of breath Confusion or disorientation Chest pain Loss of consciousness in severe cases Cherry-red skin coloration (less common)

Diagnosis Path: Diagnosis of carbon monoxide poisoning involves a combination of clinical evaluation and laboratory testing. Healthcare providers typically consider exposure history and clinical signs, especially in environments where utility gas use is prevalent. Confirmatory diagnosis is often made through blood tests measuring carboxyhemoglobin levels—the bonded form of CO with hemoglobin—in the blood. Elevated levels indicate recent or ongoing CO exposure. Additional tests may include arterial blood gas analysis and pulse oximetry, though pulse oximetry can be less reliable in detecting CO poisoning. Imaging studies are rarely necessary but may be used to assess complications or differential diagnoses.

Treatment Protocols: Immediate removal from the contaminated environment Administration of 100% oxygen via a tight-fitting mask to expedite the elimination of CO from the bloodstream Use of hyperbaric oxygen therapy in severe cases, which involves breathing pure oxygen in a pressurized chamber Monitoring and management of symptoms and vital signs Treating any resulting complications, such as neurological effects or tissue damage