<prompt> These ECG changes are seen inHyponatremiaHypernatremiaHypokalemiaHyperkalemia  <response>: Classically, the electrocardiographic manifestations in hyperkalemia progress from tall peaked T waves 5.5-6.5 mM to a loss of P waves 6.5-7.5 mM to a widened QRS complex 7.0-8.0 mM, and, ultimately, a to a sine wave pattern 8.0 mM. Ref: Harrison 19e pg: 310 