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  • Title: Torsade de pointes in initiating hemodialysis: a case report.
    Author: Yang JA, Choi HS, Bae EH, Ma SK, Kim SW, Kim CS.
    Journal: Ann Palliat Med; 2020 May; 9(3):1264-1268. PubMed ID: 32389016.
    Abstract:
    Prolongation of the QT interval by antiarrhythmic drugs is the primary cause of torsade de pointes. Although there are previous reports of drug-induced torsade de pointes in patients undergoing hemodialysis, torsade de pointes caused by a sudden decrease of potassium levels in patients initiating hemodialysis has not been well described. A 70-year-old woman with recurrent bilateral gluteal abscesses visited the hospital for antibiotic treatment. Twenty-eight days after admission, atrial fibrillation with rapid ventricular rhythm was newly detected and was controlled with intravenous amiodarone treatment. After developing pulmonary edema that did not improve with diuretic treatment, she underwent emergency hemodialysis. During hemodialysis, serum potassium and magnesium levels decreased to 3.1 and 1.7 mg/dL, respectively. The electrocardiogram showed torsade de pointes. Amiodarone treatment was stopped, and magnesium sulfate was infused. A higher concentration of potassium dialysate was used in continuous renal replacement therapy. Torsade de pointes episodes halted, and QT interval prolongation normalized. We describe a case with a rare complication of torsade de pointes upon initiating hemodialysis in a patient with QT prolongation. When initiating hemodialysis, serum potassium levels as well as electrocardiograms should be monitored in patients with a prolonged QT interval.
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