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Author: Jared Scott, MD Educational Pearls: EKG changes do not necessarily correlate to degree of hyperkalemia Traditional progression through peaked T-waves, flattened p-waves, QRS widening, and then sine-waves before asystole References Mattu A, Brady WJ, Robinson DA. Electrocardiographic manifestations of hyperkalemia. Am J Emerg Med. 2000;18:721–729.