Actiheart User Manual 5.1.31 (Jun 2022)
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outliers. This should normally only be enabled for a short selected period for
performance reasons. An example viewing is shown below.
Once selected, faint black lines are shown for every one of the ECG traces
making up the average red line. This creates an overall visual impression of
where the most commonly encountered waveform lies. It also highlights
individual traces which were affected by movement or unusual timing in some
way. Those may be investigated using the
“R wave utilities” described below.
Find/Goto Point:
This function may be employed to trace unusual ECG lines in
the context of the full recording. To use it, first click the button, and then click the
crosshair on a single faint line in the ECG display. This will cause the software to
jump to the corresponding point in the Waveform Viewer window, which may
make it clear why that waveform has arisen.
Remove Noise:
This function allows a group of ECG traces to be excluded from
the analysis based on their graphical location. To use it, first click the button, then
drag across a region of the ECG display to exclude every ECG trace which
crosses that region. This might be used for example on the lines well above or
below the average (darker region & red line) of the plot.
Reset:
Use this button to re-include all of the time
period’s heart beats for the
ECG Average calculation. This removes the effect of the two functions above.
