User's Manual

Telemetry Transmitter User Manual Monitoring RESP
Electrodes Placement for 5-lead
16.4 Cardiac Overlay
Cardiac activity that affects the RESP waveform is called cardiac overlay. It happens when the
RESP electrodes pick up impedance changes caused by the rhythmic blood flow. Correct
electrode placement can help to reduce cardiac overlay: avoid the liver area and the ventricles of
the heart in the line between the respiratory electrodes.
16.5 Chest Expansion
Some patients, expand their chests laterally. In these cases it is best to place the two respiratory
electrodes in the right midaxillary and left lateral chest areas at the patient’s maximum point of
breathing movement to optimize the respiratory wave.
16.6 Abdominal Breathing
Some patients with restricted chest movement breathe mainly abdominally. In these cases, you
may need to place the left leg electrode on the left abdomen at the point of maximum abdominal
expansion to optimize the respiratory wave.
NOTE:
Place the red and green electrodes diagonally to optimize the respiration waveform.
Avoid the liver area and the ventricles of the heart in the line between the RESP
electrodes so as to avoid cardiac overlay or artifacts from pulsating blood flow.
16.7 Selecting RESP Lead
II lead is constant as the RESP lead.
16.8 Changing the Apnea Time
Changing the apnea time is operated on MFM-CMS.
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