Product Manual

F6 and F6 Express Fetal & Maternal Monitor User Manual Fetal Monitoring
- 45 -
7.2.2 FHR Monitoring Procedure
1) Placing Transducer Belt
Place the transducer belts across the bed, ensuring that the belt will be around the abdomen
when it is fastened. Lay the patient on the bed.
Alternatively, the patient can take a sitting position. Arrange the belt around her abdomen.
2) Determining the Transducer Position
- Determine the fetal position using Leopold’s maneuvers.
- Search for the location of the fetal heart using a stethoscope or a fetoscope. The best fetal
heart signal can be obtained through the fetal back.
Figure 7-1 Positioning Ultrasound Transducer (single fetus)
- During parturition, the fetal heart moves downward as the labor progresses. It is
recommended to move the transducer along with the fetus.
3) Acquiring Fetal Heart Signal
Apply a certain amount of acoustic gel on the transducer and move it slowly around the fetus
site. Find at least 2 or 3 sites, and choose the one where the clearest, most sonorous and steady
fetal heart sound is heard.
4) Fixing the Transducer
Wrap the abdomen with the belt over the transducer. Fix the transducer by pushing its buckle
through the overlapping section of the belt.
Make sure the belt fits the patient snugly but comfortably. Meanwhile, fetus heart beat sound is
heard; the FHR trace and numeric are displayed. During long-time monitoring, the gel may dry
out as the transducer moves around. Add more gel in time if it is inadequate.
5) Confirming that the Fetus is the Signal Source
Ultrasound Doppler technology is utilized to observe the fetal heart rate externally, there are
possibilities that maternal heart rate signal is mistaken for FHR signal. It is highly
recommended to confirm that the fetus is the signal source continuously. You can feel the
maternal pulse at the same time.
If the maternal heart signal is misidentified as the fetal heart signal, Repositioning of the
transducer is needed.
Fetal Heart
Pregnancy
Early Parturition
Late Parturition