Page 76 - 33Elctronic Book (3) Normal Labor

5) It isn't recommended for women who have active herpes out breaks when they are in

labor.
➢ External fetal monitoring:

*Noninvasive fetal monitoring
• External monitoring doesn't require cervical dilatation or rupture of membranes.
➢ Technique

Is an in direct monitoring:
• Two ultrasound transducers/each is attached to belt are applied around the woman's

abdomen.
• One of the belts is put against the uterine funds to detect change in uterine pressure
and cover pressure into electronic signal that reordered on graph paper.

• The other belt is put between umbilical and symphysis pubis to record base line of
FHR and if there is any variation

➢ Advantage:
1)Noninvasive
2) Easy to apply.

3) May be used during the antepartum period.
4) may be used with telemetry.
5) doesn't require ruptured membrane or cervical dilatation.

6) No known risks to woman or fetus.
7) Provide continuous recording of FHR and UA.
8) without hazard.

9) Detects movement of fetal cardiac valves.
10) Doesn't transfer infection to mother and fetus.

➢ Disadvantages:

1) May limit maternal movement.
2) The ultrasonic transducer may pick up and trace extraneous sound.
3) it may be difficult to obtain a state tracing if the mother is obese or is moving and active

during labor.
4) Not accurate.
5) Disruption of maternal movement.
➢ Abnormal FHR patterns:

1. Tachycardia (more than 160 beat/min):

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