Natural History of Fetal Position During Pregnancy and Risk of Nonvertex Delivery

@article{Witkop2008NaturalHO,
  title={Natural History of Fetal Position During Pregnancy and Risk of Nonvertex Delivery},
  author={Catherine T. Witkop and Jun Zhang and Wenyu Sun and James F Troendle},
  journal={Obstetrics \& Gynecology},
  year={2008},
  volume={111},
  pages={875-880}
}
OBJECTIVE: To examine the natural history of fetal position throughout pregnancy and the likelihood for nonvertex delivery. METHODS: We examined fetal positions at 15–22 weeks, at 31–35 weeks, and at delivery using data from the Routine Antenatal Diagnostic Imaging with Ultrasound trial. Characteristics of women with nonvertex and vertex presentation at delivery were compared. Multivariable logistic regression analysis was performed to determine risk factors for nonvertex presentation at… 

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    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
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References

SHOWING 1-10 OF 22 REFERENCES

Effect of Prenatal Ultrasound Screening on Perinatal Outcome

TLDR
Screening ultr Masonography did not improve perinatal outcome as compared with the selective use of ultrasonography on the basis of clinician judgment.

Small fetal size: a risk factor for breech birth at term

External cephalic version beginning at 34 weeks' gestation versus 37 weeks' gestation: a randomized multicenter trial.

TLDR
Early ECV performed at 34 to 36 weeks compared with 37 to 38 weeks may reduce the risk of noncephalic presentation at delivery, and a large pragmatic trial of early ECV is now required to assess this approach further in terms of cesarean section rates and neonatal outcomes before changes in clinical practice.

A population-based case-control study of risk factors for breech presentation.

External cephalic version at term — using tocolysis

TLDR
It is concluded that although ECV is a reasonable alternative in the management of pathological presentation near term it should be performed only when there is sufficient amniotic fluid volume.

Elective Cesarean Delivery for Term Breech

The occurrence of breech presentation in Norway 1967‐1994

TLDR
Strong associations were observed between breech presentation and low birth order as well as high maternal age, and prevention of premature delivery would be an effective measure for reducing the breech Presentation proportion.

Births: final data for 2002.

TLDR
The cesarean delivery rate climbed to the highest level ever reported in the United States (26.1 percent) and the rate of vaginal birth after previous cedarean plummeted 23 percent to 12.6 percent for 2002.