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Chapter11 ECG/RESP Monitoring
11.1 What is ECG Monitoring
Monitoring the ECG produces a continuous waveform of the patient's cardiac electric activity to enable an accurate
assessment of his current physiological state. Only proper connection of the ECG cables can ensure satisfactory
measurement. On the Normal Display, the monitor provides display of 2-channel ECG waveforms.
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The patient cable consists of 2 parts;
The cable that connects to the monitor;
The lead set that connects to the patient.
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Using a 5-lead set, the ECG can derive up to two waveforms from two different leads. For requested lead, you
may choose from the left side of ECG waveform.
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The monitor displays the Heart Rate (HR), ST segment and Arrhythmia analysis.
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All of the parameters above can be set as alarm parameters.
Note
In the default settings of the monitor, the ECG waveforms are the first two waveforms from top in the
Waveform Area.
11.2 Precautions during ECG Monitoring
Warning
Do not touch the patient, table nearby, or the equipment during defibrillation.
Please use anti-defibrillation ECG cable during defibrillation.
Use only the original ECG cable for monitoring.
When connecting the cables and electrodes, make sure no conductive part is in contact with the ground.
Verify that all ECG electrodes, including neutral electrodes, are securely attached to the patient.
Note
Interference from a non-grounded instrument near the patient and ESU interference can cause inaccuracy
of the waveform.
11.3 Monitoring Procedure
11.3.1 Preparation
1.
Prepare the patient's skin prior to placing the electrodes.
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The skin is a poor conductor of electricity, therefore preparation of the patient's skin is important to facilitate good
electrode contact to skin.
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Shave hair from sites, if necessary.
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Wash sites thoroughly with soap and water. (Never use ether or pure alcohol, because this increases skin
impedance).
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Rub the skin briskly to increase capillary blood flow in the tissues and remove skin scurf and grease.
2.
Attach clip or snap to electrodes prior to placement.
3.
Put the electrodes on the patient. Before attaching, apply some conductive jelly on the electrodes if the electrodes
are not electrolyte self-supplied.
4.
Connect the electrode lead to the patient's cable.
5.
Make sure the monitor is ready with power supply.
Note
For protecting environment, the electrodes must be recycled or disposed of properly.
Warning
Check everyday whether there is skin irritation resulted from the ECG electrodes. If so, replace electrodes
every 24 hours or change their sites.
