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An Unusual Case of Carbon Monoxide Poisoning from Formic and Sulfuric Acid Mixture
Muhammed Ershad1, Athanasios Melisiotis2, Zachary Gaskill3
1Drexel University College of Medicine, Department of Emergency Medicine, Division of Medical Toxicology, Philadelphia, Pennsylvania.
Abstract:
Formic acid, when combined with sulfuric acid, gets dehydrated to form carbon monoxide (CO). A 27-year-old female was found unconscious inside a car, next to a container with a mixture of sulfuric acid and formic acid. Concentrations of up to 400 parts per million of CO were measured inside the car post ventilation. Serum carboxyhemoglobin level was 15% after receiving 100% oxygen for two hours. The patient received hyperbaric oxygen therapy after which she was extubated with normal mental status. On follow-up after three months, she demonstrated neurocognitive abnormalities suggestive of delayed neurological sequelae from CO exposure.
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