Operator's Manual

Monitoring ECG ST Monitoring
TM80/TM70 Telemetry Monitor Operator’s Manual 7 - 19
7.7.1 ST Safety Information
7.7.2
Switching ST Monitoring On and Off
The ST monitoring function is disabled by default. Before you start ST monitoring,
enable the ST function.
1. On the main screen, tap the HR digital area or ECG waveform area to enter the
[ECG] menu.
2. In the [ECGParameter Setup] section, tap [ST].
3. Switch on [ST Analysis].
Reliable ST monitoring can hardly be ensured if:
■ You are unable to get a lead that is not noisy.
■ Arrhythmias such as atrial fib/flutter cause irregular baseline.
■ The patient is continuously ventricularly paced.
■ The patient has left bundle branch block.
In these cases, you may consider switching ST monitoring off.
WARNING
• ST values may be affected by such factors as some drugs or metabolic
and conduction disturbances.
• ST deviation is often calculated at a fixed offset from the J point.
Changes in heart rate may affect ST.
• The ST deviation measurement algorithm has been tested for accuracy.
The significance of ST segment changes needs to be determined by a
physician.
• The TM80/TM70 provides ST deviation level change information. The
clinical significance of the ST level change information should be deter-
mined by a physician.