Key result
Abnormal FHR patterns are linked to higher operative delivery, low Apgar scores, and fetal acidosis.
Why the study?
The clinical significance of abnormal fetal heart rate patterns during the second stage of labor in relation to pregnancy outcomes was unclear.
Do abnormal fetal heart rate patterns during the second stage of labor worsen pregnancy outcomes in laboring women?
Comparison
Abnormal fetal heart rate patterns vs normal fetal heart rate patterns during second stage of labor
Design
Prospective observational study
Follow-up
Delivery and immediate postpartum
Authors
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Supports vigilant second-stage monitoring; hypothesis-generating for trials on optimal intervention thresholds.
Observational (n=560)
Do abnormal fetal heart rate patterns during the second stage of labor worsen pregnancy outcomes in laboring women?
Abnormal fetal heart rate patterns during the second stage of labor, specifically late decelerations and bradycardia, are associated with fetal acidosis and adverse neonatal outcomes, suggesting expedited delivery should be considered.
Eyal Sheiner (2001) conducted an observational in Labor (second stage) (n=560). Abnormal fetal heart rate patterns vs. Normal fetal heart rate patterns was evaluated on Pregnancy outcome (operative delivery, Apgar scores, fetal acidosis, ICU admission). Abnormal fetal heart rate patterns occurred in 75% of second-stage labor tracings and were associated with significantly higher rates of operative delivery, low Apgar scores, and fetal acidosis.
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