Spontaneous conversion of atrial fibrillation caused by severe hyperkalemia: A case report

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Rationale:Hyperkalemia is a life-threatening electrolyte disturbance which could lead to arrhythmias and potentially death.Patient concerns:An 82-year-old male patient who presented typical electrocardiographic indications of hyperkalemia, including the absence of P waves, prolongation of QRS complex, sinoventricular conduction, bradyarrhythmia and tall peaked T waves. He developed a rare self-defibrillation of atrial fibrillation to sinus rhythm due to hyperkalemia. Besides, he developed secondary thrombosis caused by abrupt termination of atrial fibrillation.Diagnoses:This patient was diagnosed with hyperkalemia, hypertension, and AF.Interventions:He was treated with an intravenous infusion of calcium gluconate, insulin and dextrose, an oral kayexalate, and emergency hemodialysis.Outcomes:The patient was managed effectively and discharged with stable status.Lessons:Hyperkalemia could induce malignant arrhythmia with high mortality. Thus we suggested more attention be paid to monitoring electrolyte disorders and maintaining anticoagulation treatments to avoid thromboembolism.

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