GE MAC 1600, Operator'S Manual, Page: 60 / 162

5-10 MAC™ 1600 2028451-182B
Recording a Resting ECG
Reanalysis Options
The following options are available when reanalyzing an ECG.
Feature Description
A Waveforms A composite view of the ECG reading generated by
superimposing the median waveforms from all 12
leads.
Press the Leads key to toggle through the individual
waveforms. The selected waveform is brighter than the
others.
B Fiducial Points Each fiducial point is represented by a vertical line
through the composite waveforms.
Press the F1 key (Next) to toggle through the fiducial
points. When a point is selected, it increases in size
and is highlighted green. A selected fiducial point can
be adjusted by pressing the left and right arrows on the
trimpad.
C Measurement
Legend The measurement, in milliseconds (ms), for the
following:
„
P Duration
„
PR Interval
„
QRS Duration
„
QT Interval
As you adjust the fiducial points, these measurements
adjust accordingly.
F Key Option Description
F1 Next Cycles through the following fiducial points on the
superimposed waveforms:
„
P-onset
„
P-offset
„
QRS-onset
„
QRS-offset
„
T-offset
As it cycles through each point, the selected point is
doubled in size and highlighted green for ease of
visibility.
Use the left and right arrows on the trimpad to move
the selected point. As you adjust points, the
corresponding measurements in the Measurement
Legend adjust accordingly.