Postpartum fetal head circumference and its influence on labour duration in nullipara

Mm, Kennelly; Anjum, Razia; S, Lyons; Burke, Gerald

doi:10.1080/0144361031000153701

Cited by 22 publications

(17 citation statements)

References 7 publications

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“…Therefore we excluded women with an estimated foetal weight above 4000 grams. Importantly, a previous study by Zaretsky et al [18] eliminated cases of macrosomia and large foetal head circumference, which are well-known to effect normal progress of labour [23]. Surprisingly, Ferguson et al assessed a high-risk group for obstructed labour based on previous delivery and risk factors in the current pregnancy and did not find an association between foetal head parameters and obstructed labour [24].…”

Section: Discussionmentioning

confidence: 98%

Sonopelvimetry: An Innovative Method for Early Prediction of Obstructed Labour

Gilboa¹,

Bertucci²,

Cani³

et al. 2014

OJOG

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Aim: To evaluate an innovative sonopelvimetry method for early prediction of obstructed labour. Methods: A prospective study was conducted in two centers. GPS-based sonopelvimetry, laborPro TM (Trig Medical Inc., Yoqneam Ilit, Israel) devise, was used prior to labour in nulliparous women at 39 -42 weeks gestation remote from labor. Maternal pelvic parameters, including inter-iliac transverse diameter, obstetric conjugate and interspinous diameter were evaluated. Fetal parameters included head station, biparietal diameter and occipitofrontal diameter. Data on delivery and outcome were collected from the electronic files. Results: The innovative use of sonopelvimetry was applied to 154 consecutive women, none of the participants complained of discomfort or complications observed. The mean time of examination was 15 + 2 minutes. Mean time of examination to delivery interval was 4.8 days (range 0 -16 days). Small interspinous diameter and high head station were the best predictors for obstructed labour. Analysis indicated 87% sensitivity and 61% specificity for birth weight fetal head station and ISD combined in predicting obstructed labour with an area under the curve of 0.77. Conclusions: Our results indicate that GPS-based sonopelvimetry combined with fetal estimated weight is a valuable tool in the risk assessment of obstructed labour. Parameters obtained by sonopelvimetry combined with birth weight may be useful.

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Section: Discussionmentioning

confidence: 98%

Sonopelvimetry: An Innovative Method for Early Prediction of Obstructed Labour

Gilboa¹,

Bertucci²,

Cani³

et al. 2014

OJOG

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show abstract

“…A recent population-based Swedish study that evaluated postnatal head circumference suggested that women delivering infants with large FHC (39-41 cm) were significantly more likely to experience vacuum-assisted vaginal delivery, fetal distress, prolonged labor and cesarean section relative to women delivering infants with average FHC [9]. Among nulliparous Irish women, large FHC was significantly associated with prolonged labor with similar sensitivity and specificity as elevated birth weight [10]. …”

Section: Introductionmentioning

confidence: 99%

Fetal head circumference, operative delivery, and fetal outcomes: a multi-ethnic population-based cohort study

Mujugira

Osoti

Deya

et al. 2013

BMC Pregnancy Childbirth

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BackgroundOperative delivery procedures, such as primary cesarean section, vacuum-assisted, and forceps-assisted vaginal delivery increase maternal and fetal morbidity, and the cost of care. We evaluated whether large fetal head circumference (FHC) independently increases risk of such interventions, as well as fetal distress or low Apgar score, in anatomically normal infants.MethodsWe conducted a population-based retrospective cohort study using Washington State birth certificate data. We included singleton, term infants born to nulliparous mothers from 2003–2009. We compared mode of delivery and fetal outcomes in 10,750 large-FHC (37-41 cm) infants relative to 10,750 average-FHC (34 cm) infants, frequency matched by birth-year.ResultsLarge-FHC infants were nearly twice as likely to be delivered by primary cesarean section as average-FHC infants (unadjusted relative risk [RR] 1.84, 95% confidence interval [CI]: 1.77, 1.92). The RR for primary cesarean section associated with large-FHC was largest for mothers aged 19 years or less (RR 2.28; 95% CI: 1.99, 2.61), and smallest for mothers aged 35 years or greater (RR 1.51; 95% CI: 1.37, 1.66) [test of homogeneity, p < 0.001]. Large-FHC infants were at increased risk of vacuum-assisted vaginal delivery (RR 1.55; 95% CI: 1.43, 1.69), and forceps-assisted vaginal delivery (RR 1.61; 95% CI: 1.32, 1.97). There was no difference in risk of fetal distress (RR 0.97; 95% CI: 0.89, 1.07) for large-FHC versus average-FHC infants. Risk estimates were unaffected by adjustment for potential confounders.ConclusionsNulliparous mothers of large-FHC infants are at increased risk of primary cesarean section, vacuum-assisted and forceps-assisted vaginal delivery relative to mothers of average-FHC infants. Maternal age modifies the association between FHC and primary cesarean section.

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“…Few studies have investigated the impact of head circumference on the odds of operative delivery in nulliparae; [6][7][8]10 rather focusing on estimated fetal weight. 11 The earlier studies showed that the odds of operative delivery and prolonged second stage of labor 6-8 increased as HC increased, and found as we did that infants of higher birth weight were less likely to show signs of fetal distress than smaller fetuses with similar HC 6 .…”

mentioning

confidence: 97%

“…the tension at the point of meeting of the human fetal head and the bipedal female pelvis, [1][2][3][4] but sparse attention has been paid in the obstetric literature to the impact of head circumference on obstetric outcomes. [5][6][7][8][9][10] The literature on problems of delivery in "big babies" focuses primarily on fetal size in terms of weight. [11][12][13][14] We queried how fetal head dimensions might impact the passage of the fetus through the birth canal and affect obstetric outcomes, primarily delivery mode.…”

mentioning

confidence: 99%