<prompt> The ECG change seen in hyperkalemia isNarrowing of the QRS complexIncreased amplitude of P wavesNarrowing and peaking of T wavesVentricular arrhythmias  <response>: Hyperkalemia plasma K -7.0 meqL. The PR and QRS intervals are within normal limits. Very tall, slender peaked T waves are now present. Hyperkalemia plasma K -8.5 meqL. The QRS complex is broad and slurred and the QRS interval has widened to 0.2 s. The T waves remain tall and slender Fuher elevation of the plasma K level may result in ventricular tachycardia and ventricular fibrillation. Ref: Ganongs Review of Medical Physiology Twenty-Third Edition Page No: 504 