Ecg Lead Connection Recommended For Surgical Patients; Waveform Quality - Fazzini FM5000C User Manual

15.4.2.5 ECG Lead Connection Recommended for Surgical Patients

Warning

When using electricity surgical unit (ESU), put the ECG electrode at the middle position
between ESU earth plate and electrosurgical knife to avoid burn. The cable of electricity surgical
unit and the ECG cable can't be entangled.

In the use of electricity surgical unit (ESU), never allow the electrodes to be close to the earth
plate of electricity surgical unit, or ECG signal would be interfered seriously.
The position of ECG lead depends on the type of surgery. For example, for the thoracotomy, electrode can
be put on the chest or the back. In the operating room, because of usingelectrosurgical knife equipment,
sometimes artifact may affect ECG waveform, in order to cut the artifact, you can put the electrode on left
and right shoulder, near the abdomen of left or right side, and the breast lead can be put on the left side of
chest quiet near the center. To avoid the electrode beingput on the upper arm, or ECG wave will become
very small.

15.5 Waveform quality

Users can choose to display the ECG waveform with the best signal.
Feature of a good signal:

Tall, narrow and without notch.

R wave tall, completely above or below the baseline.

T waves less than 1/3 height of R wave.

P wave should be much smaller than T wave
Figure 15-6Position of chest electrodes of 12-lead ECG cable
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