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Clinical course after hospital arrival of a 43‐year‐old man with caffeine overdose (top panel) and serum concentrations of caffeine and theophylline (bottom panel). AV, arterial venous; FDL, flexible double‐lumen catheter; GI, gastrointestinal; HR, heart rate; VA‐ECMO, venoarterial extracorporeal membrane oxygenation; VF, ventricular fibrillation; VPC, ventricular premature contraction.
