Table 2: Definition of the nine waveforms.

WaveformDefinition

Up-PWaveform from the start of the P wave to the peak of the P wave

Down-PWaveform from the peak of the P wave to the end of the P wave

PR Waveform from the end of the P wave to the start of the QRS wave

Up-RWaveform from the start of the QRS wave to the peak of the R wave

Down-RWaveform from the peak of the R wave to the end of the QRS wave

ST Waveform from the end of the QRS wave to the start of the T wave

Up-TWaveform from the start of the T wave to the peak of the T wave

Down-TWaveform from the peak of the T wave to the end of the T wave

TP Waveform from the end of the T wave of the current beat to the start of the P wave of the next beat