<prompt> ECG finding of Hyperkalemia:T wave inversionST depressionP pulmonaleWide QRS complex  <response>: Ans.d Wide QRS complexRef: Harrison 19th ed. 310ECG Findings of Hyperkalemia The first ECG finding in hyperkalemia is tall tented T waves followed by slowing of depolarization of heart. This results in prolonged PR interval with QRS widening. Subsequently the P waves start becoming smaller. Sine wave pattern leading to ventricular fibrillation diastolic arrest of heart. 