10 Cross-Channel Verification (CCV)
The coincidence question mark is also printed on the trace paper next to
Recommended Actions for Coincidence INOP
Confirm fetal life by palpation of fetal movement or auscultation of fetal heart sounds using a
fetoscope, stethoscope, or Pinard stethoscope.
Manual determination of the maternal pulse and comparison with the fetal heart rate sound signals
from the loudspeaker.
Reposition the transducer, or ensure that the fetal scalp electrode is placed correctly, until you
receive a clear signal and the monitor is no longer issuing the
In case of difficulties deriving a stable maternal pulse reading using the Toco MP or CL Toco
transducer, use SpO
measurement from SpO
maternal pulse or heart rate include: motion artifacts, arrhythmia, and individual differences in
pulse signal quality on the abdominal skin (via Toco MP).
If you cannot hear the fetal heart sounds, and you cannot confirm fetal movement by palpation,
confirm fetal life using obstetric ultrasonography.
or the CL SpO
Pod instead. In case of similar problems with the pulse
, use MECG instead. Reasons to switch the method for deriving a
Printed coincidence question mark on