F15 Series Fetal & Maternal Monitor User Manual WI-FI Networking and Instructions
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(3) Halving:
When the FHR increases to 180 bpm or higher, it is possible for the monitor to mistake the two
separate hearbeats for the diastole and systole of a single heartbeat. As a result, a heart rate trace
that is half the actual heart rate is produced. This often happens during tachycardia, representing an
abrupt switch of the trace to half the actual heart rate. The clinicians may interpret it as a
“deceleration”.
However, the heart beat sound from the monitor speaker is still reliable even when doubling or halving
is occurring.
Stethoscopy should be applied when sudden changes in baseline are detected.
If the amniotic membrane rupture and cervical dilatation are sufficient, consider using a spiral
Traditional 510(k) of Fetal & Maternal Monitor
014_14.1_F15_Series_User_Manual
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