<prompt> ECG changes in hyperkalemia are all except -Prolonged PR intervalDepressed ST-segmentInverted T waveWide QRS  <response>: Ans. is c i.e., Inverted T wave HypokalemiaHyperkalemiao Prominent U wave earliest changeo Sine wave configurationo Flattening and inversion of T-waveo Tall, tented T-wave peaked narrowo Prolonged PR-interval, QRS widening in severe H o Prolonged PR-interval, QRS widening andBut PR QRS constant when K - 3.5 mEqLo HR Complete heart block or ventricularo Prolonged QT intervalasystole may occuro Depressed sagging of ST-segmento Depressed ST-segment 