Operator's Manual

QT Monitoring Monitoring with the TM80/TM70 at the CMS
12 - 12 TM80/TM70 Telemetry Monitor Operator’s Manual
12.8 QT Monitoring
A normal ECG waveform (as shown in the following figure) typically includes a sharp and
well defined QRS complexes with consistent spacing between R waves, and an ECG
baseline that is free of noise and artifact.
A normal ECG waveform (for QT monitoring)
The QT interval in an ECG lead is the time interval from the onset of the earliest deflec-
tion in the QRS complex to the end of the T wave. QT monitoring can assist in the detec-
tion of prolonged QT interval syndrome.
12.8.1 Measurement Limitations
QT/QTc values are calculated with a 3/5/6-leadwire ECG cables.
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ST Point
J Point
ISO Point
R
T
QT Interval
P
Q
S