Carbon Monoxide Poisoning A Case Study

Abstract

Introduction: Carbon monoxide (CO) is a colorless and odorless gas that often becomes a cause of injury and even accidental death worldwide. CO poisoning can come from defective heating systems, motor vehicle exhaust, or fire in poorly ventilated spaces. Case study: A case is reported of death of an adult woman and her family who were found dead inside a vehicle on a toll road. The victims were found in a closed car without any obvious signs of external violence. External examination showed some parts of the body with bright red discoloration (cherry red lividity), and no blunt force injuries were found. Based on witness information around the scene, the victims were suspected to be exposed to carbon monoxide gas due to prolonged exposure to vehicle exhaust in a closed space. Forensic examination and medicolegal findings indicated death due to carbon monoxide poisoning. Discussion: Carbon monoxide poisoning is a cause of death that is often difficult to recognize because clinical and postmortem findings are not specific. The mechanism of death is mainly due to tissue hypoxia caused by formation of carboxyhemoglobin and also direct cellular toxicity. The classic sign such as cherry-red lividity is rarely found and not pathognomonic, so toxicological examination by measuring COHb level is important for diagnosis. In deaths occurring in enclosed spaces without signs of violence, consistency between environmental condition, autopsy findings, and high COHb levels supports the conclusion of accidental carbon monoxide poisoning. This finding emphasizes the importance of forensic awareness and prevention efforts to reduce mortality from CO poisoning. Conclusion: Carbon monoxide poisoning is an important cause of accidental death in forensic practice. Establishing diagnosis requires comprehensive evaluation including crime scene investigation, forensic examination of the body, and medicolegal analysis to determine the cause and mechanism of death.