Which of the following is NOT TRUE about ECG changes in hyperkalemia?: (A) Peaked P-wave, (B) Peaked T -wave, (C) Sinusoidal shape complex, (D) Broad QRS Complex
Answer is A. With mild to moderate hyperkalemia, there is reduction of the size of the P wave and development of peaked T waves. Severe hyperkalemia results in a widening of the QRS complex, and the ECG complex can evolve to a sinusoidal shape.