T58.03

Clinical Causes: Inhalation of exhaust gases from motor vehicles, especially in enclosed or poorly ventilated spaces. Intentional exposure as part of an assault, where individuals are deliberately placed in environments with high levels of exhaust fumes. Accidental exposure during vehicle maintenance or illegal street racing activities. Use of motor vehicle exhaust fumes as a method of harm or poisoning in criminal acts.

Key Symptoms: Headache and dizziness Nausea and vomiting Weakness and fatigue Shortness of breath Confusion and disorientation Loss of consciousness in severe cases Cherry-red skin appearance, although this is not always present Flu-like symptoms in mild cases Rapid heartbeat

Diagnosis Path: Diagnosis involves a combination of patient history, especially recent exposure to vehicle exhaust, and clinical presentation. Blood tests measuring carboxyhemoglobin levels are critical, as elevated levels indicate carbon monoxide poisoning. Medical professionals may also use pulse oximetry to assess oxygen saturation, but it may not reliably distinguish between oxygen and carbon monoxide bound to hemoglobin. Additional tests like arterial blood gases can provide more detailed information about the body's oxygenation status. Imaging and neurological assessments might be necessary if there are signs of brain injury or other complications.

Treatment Protocols: Immediate management focuses on removing the individual from exposure to the source of carbon monoxide. Administration of high-flow oxygen, typically via a mask, is the primary treatment to displace carbon monoxide from hemoglobin. In severe cases, hyperbaric oxygen therapy may be recommended to rapidly decrease carboxyhemoglobin levels and minimize tissue damage. Supportive care includes monitoring vital signs, managing symptoms, and providing fluids and medications as needed. Long-term follow-up may be necessary if neurological or organ damage occurs due to the poisoning.