Welch Allyn CardioPerfect Workstation Resting ECG Module - User Manual - Manual (Page 41)

CardioPerfect Workstation
Resting ECG Module - User Manual
DIR 80012333 Ver. E 41 / 54
8.4. QT dispersion tab
The QT dispersion tab is only visible when you have purchased the QT dispersion software. Use
the QT dispersion tab to set your preferences for the calculation of the QT dispersion.
Note: QT dispersion option not sold in the US.
The QT dispersion tab contains the following options:
Reference point In the Reference point area, you can specify from which reference
point in the QRS complex the measurement should be started,
and whether that reference point should be the same for all leads
(global), or whether it should be set for each lead (local).
Leads In the Leads area, you can specify the number of leads you want
to use in calculating the QT dispersion.
Reference point
If you select… Then…
Local Q Reference point is local Q point.
Local J Reference point is local J point.
Global Q Reference point is global Q point.
Global J Reference point is global J point.
Leads
If you select... The leads that are used are...
6 6 precordial leads
8 The shortest peripheral lead
The mean of all other peripheral leads
10 6 precordial leads
All peripheral leads except the shortest and the longest one.
12 All 12 leads.