User's Manual

Patient Monitor User Manual Monitoring ECG
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8.10.4 About ST Measurement Points
The ST value for each beat complex is the vertical difference between the ISO point and the ST
point, as shown in the diagram below. The isoelectric (ISO) point provides the baseline, and the
ST point is at the midpoint of the ST segment. The J point is where the QRS complex changes its
slope; as it is a fixed distance away from the ST point, it can be useful to help you position the ST
point correctly.
DEF POINT
The ST and ISO measurement points need to be adjusted when you start monitoring, and if the
patient's heart rate or ECG morphology changes significantly. Always ensure that ST
measurement points are appropriate for your patient. Abnormal QRS complex is not considered
in ST segment analysis.
8.10.5 Adjusting ST and ISO Measurement Points
Depending on your monitor’s configuration, the ST point can be positioned, too.
These two points can be adjusted by turning the knob. When adjusting ST measurement point, the
system will show the ST Measurement Point Window. The system displays the QRS complex
template in the window. It is adjustable for the highlight bar in the window. You may select ISO
or ST, switch the knob left or right to move the cursor line. When the cursor is at the required
position, you may select the base point or the measurement point.
8.11 Arr. Monitoring
8.11.1 Arrhythmia Analysis
The arrhythmia algorithm is used to monitor ECG of patients in clinics, and detect the changes of
heart rate and ventricular rhythm, and also save arrhythmia events and generate alarming
information. Arrhythmia algorithm can monitor paced and non-paced patients. Qualified
personnel can use arrhythmia analysis to evaluate patient’s condition (such as heart rate, PVCs
frequency, rhythm and ectopic beat) and decide the treatment. Besides detecting change of ECG,
arrhythmia algorithm can also monitor patients and give proper alarm for arrhythmia.