<prompt> The following ECG findings are seen in HypokalemiaIncreased PR interval with ST depressionIncreased PR interval with peaked T waveProlonged QT interval with T wave inversionDecreased QT interval with ST depression  <response>: Effects of hypokalaemia on the ECG Changes appear when K 2.7 mmoll Increased amplitude and width of the P wave Prolongation of the PR interval T wave flattening and inversion ST depression Prominent 