Directions for use Monitoring and Measurements 53
ST settings
The parameter settings are selected with the trim knob, described previously (see
“Settings via a parameter field” on page 31).
The default settings are in
bold.
ST alarm messages
ST measurements can only be displayed when the full arrhythmia and ST option is
licensed, and when ST is enabled in setup parameters (See “Defining parameter
fields” on page 25).
Main menu Parameter Description
Setup ST ST Relearn Reanalyzes the QRS complexes to determine
base measurement levels.
ST Lead 1 Define the lead for measurement 1 (default lead
II).
ST lead 2 Define the lead for measurement 2 (default lead
V).
ST Measurement point Auto, 60, 80. Define the measurement point (ms
after the j-point).
Note: When Auto is defined, the measurement
point is set to either 60 or 80 ms. This is
dependent on the results of an algorithm that
builds a hysteresis counter based on the
patient's average heart rate - a faster heart rate
is set at 60 ms.
Lower limit / upper limit Range: -10 to +10
Lower limit default -1
Upper limit default +1
Alarm level Off, Low, Medium, High.
Print on alarm Yes, No.
Presets Select to return all ST settings to the defaults.
Alarm Possible cause Suggested action
ST > [upper limit]
ST< [lower limit]
ST is higher or lower than the
alarm limit.
Check the patient.
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