Extracorporeal Membrane Oxygenation for Hypokalemia and Refractory Ventricular Fibrillation Associated with Caffeine...

Area of Science:

• Toxicology
• Cardiology
• Critical Care Medicine

Background:

• Caffeine overdose can lead to life-threatening cardiac events, including cardiac arrest.
• Severe hypokalemia is a dangerous complication of caffeine intoxication.
• Fatal dysrhythmias pose a significant challenge in managing massive caffeine overdose.

Purpose of the Study:

• To report a case of successful treatment of massive caffeine intoxication with fatal dysrhythmias.
• To highlight the potential role of extracorporeal membrane oxygenation (ECMO) in managing severe poisoning.
• To emphasize the importance of recognizing and managing severe hypokalemia in caffeine overdose.

Main Methods:

• A 43-year-old woman with bipolar disorder ingested caffeine and amitriptyline.
• She presented with ventricular fibrillation and severe hypokalemia, refractory to conventional treatment.
• Extracorporeal membrane oxygenation (ECMO) was initiated early for circulatory support and toxin removal.

Main Results:

• ECMO facilitated the correction of severe hypokalemia (19.3 g potassium administered).
• Hemodialysis during ECMO reduced caffeine levels.
• The patient recovered fully from sustained cardiac arrest and was discharged home.

Conclusions:

• ECMO can be an effective life-saving therapy for patients with severe poisoning and fatal dysrhythmias.
• Early institution of ECMO provides crucial time for detoxification and correction of metabolic abnormalities.
• Emergency physicians should consider ECMO in refractory cases of severe poisoning with hemodynamic compromise.