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Philips FM20/30 Instructions For Use Manual Page 155

Release j.3 with software revision j.3x.xx patient monitoring.
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Double-Counting
Contractions
Artifact
Comment
Remediation
Half-Counting
Baseline Rate
Baseline Variability
Accelerations
Decelerations
Contractions
Artifact
Comment
Remediation
Maternal-Switching (Maternal Insertion)
Excessive, coupling, hypertonus
Double-Counting
Reassuring tracing. The excessive uterine activity should prompt discontinuation of any
oxytocic agent.
The true fetal rate can be confirmed by auscultation or by fetal scalp electrode.
120
Moderate
Present
Not apparent
Minimal
Half-counting, noise, drop out
Reassuring tracing. The half-count at 4-5 minutes into the tracing may simulate a fetal
deceleration, but the abruptness and the lack of any compensatory changes when the
normal rate returns suggests that this is half-counting. Insertion of the maternal heart rate
(see below) may produce a similar pattern. Note also very brief episodes of half-counting,
maternal insertion, and signal drop out.
Auscultation or the application of a direct scalp electrode, if feasible, will reveal the true
fetal heart rate.
11 Monitoring FHR and FMP Using Ultrasound
155

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