Abstract
We herein report two cases of potentially life-threatening arrhythmia due to hyperkalemia triggered by the excessive consumption of “Hoshi-Imo” (dried sweet potato). Both patients with chronic renal disease on renin-angiotensin-aldosterone system inhibitors presented at the emergency room with non-specific symptoms. Electrocardiograms revealed potentially life-threatening arrhythmia due to hyperkalemia in both cases: sinus arrest with a ventricular escape rhythm, tall and peaked T waves; and a widened QRS complex in a nearly sine-wave configuration without discernible P wave. Both patients fully recovered after intensive care for hyperkalemia. Physicians should recognize the excessive consumption of “Hoshi-Imo” may lead to the development of life-threatening arrhythmia, especially in patients with risk factors for hyperkalemia.
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