Fetal biparietal diameter as a potential risk factor for prolonged second stage of labor: A retrospective observational cohort study

Prolonged second stage of labor is a common abnormality of labor progression. Very little research exists regarding the relationship between prolonged second stage of labor and antepartum sonographic fetal head biometry parameters, especially fetal biparietal diameter (BPD). Fetal BPD assessment is...

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Bibliographic Details
Published in:PloS one 2020-10, Vol.15 (10), p.e0239045-e0239045
Main Authors: Shinohara, Satoshi, Amemiya, Atsuhito, Takizawa, Motoi, Suzuki, Kohta
Format: Article
Language:English
Subjects:
Biology and Life Sciences
Biometrics
Biometry
Body mass index
Childbirth & labor
Cohort analysis
Confidence intervals
Diameters
Epidural
Fetal monitoring
Fetuses
Gestational age
Glucose
Gynecology
Health risks
Hospitals
Induced labor
Labor
Labor complications
Medicine and Health Sciences
Methods
Neonates
Observational studies
Obstetrical research
Obstetrics
People and Places
Pregnancy
Risk analysis
Risk factors
Survival analysis
Ultrasound
Vagina
Womens health
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Summary:Prolonged second stage of labor is a common abnormality of labor progression. Very little research exists regarding the relationship between prolonged second stage of labor and antepartum sonographic fetal head biometry parameters, especially fetal biparietal diameter (BPD). Fetal BPD assessment is essential for estimating fetal weight, and these measurements are readily available to Japanese obstetricians. We conducted a retrospective observational cohort study to evaluate the association between BPD fetal Z-score and prolonged second stage of labor in a Japanese cohort. Individual BPD data measured using a GE Voluson 730 expert ultrasound system (GE, Healthcare Japan, Tokyo, Japan) were converted to Z-scores for a particular gestational age. After excluding patients with multiple pregnancies and emergency or elective cesarean sections, a total of 2,711 (nulliparity, n = 1341) Japanese women who delivered at term were included. We analyzed the incidence of prolonged second stage of labor and the association between BPD Z-score measured
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0239045