Abstract
Background: Carbon monoxide (CO) poisoning is known to have direct toxic effects on the cardiovascular system, including the potential to cause arrhythmias by prolonging the QTc interval. The arrhythmogenic properties of CO are believed to be attributed to its impact on cardiac membranes. Case Presentation: This case report presents the clinical course and management of a 21-year-old male who presented to the Emergency Department (ED) with an altered level of consciousness following exposure to carbon monoxide while cooking on a gas cylinder in a closed room. The patient had no history of chronic medical illness and was a non-smoker. Physical examination revealed stable vital signs, clear breath sounds, and a lax, soft, and non-tender abdomen. Laboratory investigations showed elevated troponin levels indicative of cardiac muscle injury but normal potassium levels. ECG revealed atrial fibrillation with a fast ventricular rate and transient ST elevation. The patient received high flow oxygen. The carboxyhemoglobin level decreased significantly after high-flow oxygen administration, confirming the successful treatment of carbon monoxide poisoning. Echocardiography and coronary angiography demonstrated normal cardiac function and ruled out coronary artery disease, respectively. The patient received high-flow oxygen therapy, continuous cardiac monitoring, and supportive care during hospitalization. Following stabilization and restoration of sinus rhythm, the patient was discharged in stable condition. Conclusion: This case highlights the importance of prompt recognition and management of carbon monoxide poisoning, as well as the need for careful evaluation of cardiac function in such cases. The patient responded well to high-flow oxygen therapy, leading to a decrease in the carboxy hemoglobin level and resolution of symptoms. Timely recognition and appropriate management of carbon monoxide poisoning are crucial in preventing adverse cardiac events and ensuring a favorable outcome for the patient.
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