Monitoring MECG Wave
The fetal/maternal monitor is not a diagnostic ECG device. In particular, the display of fetal/maternal
ECG is intended only for evaluating signal quality for fetal/maternal heart rate as derived from the
When in doubt, it can be used to identify sources of compromised signal quality, such as noise or
muscle artifacts. It can subsequently be used to verify the result of measures taken to resolve them
(e.g., checking ECG cable connections or adapting the fetal
The safety and effectiveness of the displayed fetal/maternal ECG waveform (i.e., P, QRS and T
segments) for evaluation of fetal/maternal cardiac status during labor have not been evaluated.
When measuring MECG with the Avalon FM30 or FM50, the MECG waveform, along with the heart
rate numeric, is displayed on the screen when using a Toco
module, or a CL ECG/IUP transducer. If a maternal ECG wave analysis is required use a patient
The fetal/maternal monitor is NOT intended for use during defibrillation, electro-surgery, or MRI.
Remove all transducers, sensors, and accessories before performing electro-surgery, defibrillation, or
MRI, otherwise harm to the patient or the user can result.
To obtain a satisfactory maternal ECG waveform you must use the RA to LL (lead II) position of the
standard 5-lead ECG.
21 Monitoring Maternal Heart / Pulse Rate
, CL Toco
MP transducer, a patient
Place the RA
electrode (A) directly
below the clavicle
and near the right
Place the LL
electrode (B) on the
left lower abdomen.