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Dr. Madhavi Karki. PROCEDURE RELATED PREGNANCY LOSS RATE IS 1-2%. A normal, healthy fetal heart rate should possess average or moderate variability. Decreasing variability is an indicator of possible stress.

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slide27

A normal, healthy fetal heart rate should possess average or moderate variability.

Decreasing variability is an indicator of possible stress.

slide28

Accelerations: The fetal heart rate will normally remain steady or accelerate during uterine contractions.Look at the fetal heart rate and what is happening with contractions.

slide31

· An early deceleration begins at or after the onset of a contraction and returns

to the baseline rate by the time the contraction has finished and produces a mirror

image of the contraction. 

· Early decelerations are not a sign of fetal problems. 

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Late Decelerations: Late decelerations are transitory decreases in heart rate caused

byuteroplacental insufficiency, a compromised blood flow to the baby that does not

deliver the amount of oxygen needed to withstand the stress of labor.

  The late deceleration begins after the onset of the peak or middle of the contraction

and ends after the contraction. 

·  A late deceleration begins during or after a contraction and has not recovered by

the time that the contraction has ended.  A late deceleration indicates decreased blood

flow during uterine contraction. Note: Persistent late decelerations are ominous

slide33

Variable Decelerations: Variable decelerations are transitory decreases in fetal heart rate

caused by umbilical cord compression. 

A variable deceleration is unrelated to contractions.  They mean umbilical cord compression. 

· They may appear V-shaped or U-shaped

If the baseline fetal heart rate remains stable and the variability remains good, variable decelerations are not associated with poor fetal outcome.

·They indicate possible compromise if they become prolonged or are persistent.