Estimated fetal weight accuracy in pregnancies with preterm prelabor rupture of membranes by the Hadlock method

Duncan, Jose R.; Schenone, Claudio V; Dorset, Katherine M.; Goedecke, Patricia; Tobiasz, Ana; Meyer, Norman; Schenone, Mauro

doi:10.1080/14767058.2020.1769593

Cited by 4 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, low amniotic fluid is common in pregnancies with PPROM, and this has been shown to decrease the accuracy of the EFW, and second, the US examinations were performed by trainees. Nevertheless, we previously validated the accuracy of the EFW measured in this study population [36], and the presence of low amniotic fluid was comparable in those with SGA and those without (Table 3).…”

Section: Discussionsupporting

confidence: 57%

“…In addition, the evaluated adverse neonatal outcomes in our secondary outcomes have been previously validated and are known to cause severe morbidity and mortality in premature infants [37,39]. Lastly, both charts studied were derived from the Hadlock formula, and the same has been validated in our PPROM population [36], and the EFW in this population has been shown to be a significant predictor of adverse perinatal outcomes [40].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Detection of small for gestational age in preterm prelabor rupture of membranes by Hadlock versus the Fetal Medicine Foundation growth charts

et al. 2021

Self Cite

View full text Add to dashboard Cite

Objective: The primary outcome was to compare the diagnostic accuracy of neonatal Small for gestational age (SGA) by the Hadlock and Fetal Medicine Foundation (FMF) charts in our cohort, followed by the ability to predict composite severe neonatal outcomes (SNO) in pregnancies with preterm prelabor rupture of membranes (PPROM).Methods: This study was a secondary analysis of a prospective cohort of pregnancies with PPROM from 2015 to 2018, from 23 to 36 completed weeks of gestation. Sensitivity, specificity, and positive and negative predictive values for the primary and secondary outcomes of the Hadlock and FMF fetal charts were calculated. The discriminatory ability of each chart was compared using the area under the receiver's operating curves of clinical characteristics.Results: Of the 106 women who met the inclusion criteria, 48 (45%) were screened positive using the FMF fetal growth chart and 22 (21%) were screened positive using the Hadlock chart. SGA was diagnosed in 12 infants (11%). Both fetal growth charts had comparable diagnostic accuracies and were statistically significant predictors of SGA (Hadlock: area under the receiver operating characteristic curves [AUC], 0.76, risk ratio [RR], 7.6, 95% confidence interval [CI], and FMF: AUC, 0.76, RR, 95% CI,). Both growth standards were poor predictors of SNO. Conclusion:The Hadlock and FMF fetal growth charts have a similar accuracy to predict SGA in pregnancies complicated by PPROM. The FMF fetal growth chart may result in a 2-fold increase in positive screens, potentially increasing fetal surveillance.

show abstract

Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Detection of small for gestational age in preterm prelabor rupture of membranes by Hadlock versus the Fetal Medicine Foundation growth charts

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

The accuracy of sonographic fetal weight in very preterm infants (≤32 weeks)

Sgayer,

Barbara,

Darwish

et al. 2024

Journal of Gynecology Obstetrics and Human Reproduction

View full text Add to dashboard Cite

Comparison of sonographic fetal weight estimation formulas in patients with preterm premature rupture of membranes

Warshafsky

Ronzoni

Quaglietta

et al. 2021

BMC Pregnancy Childbirth

View full text Add to dashboard Cite

Background Estimation of fetal weight (EFW) by ultrasound is useful in clinical decision-making. Numerous formulas for EFW have been published but have not been validated in pregnancies complicated by preterm premature rupture of membranes (PPROM). The purpose of this study is to compare the accuracy of EFW formulas in patients with PPROM, and to further evaluate the performance of the most commonly used formula - Hadlock IV. Methods A retrospective cohort study of women with singleton gestations and PPROM, admitted to a single tertiary center between 2005 and 2017 from 220/7–330/7 (n = 565). All women had an EFW within 14 days of delivery by standard biometry (biparietal diameter, head circumference, abdominal circumference and femur length). The accuracy of previously published 21 estimated EFW formulas was assessed by comparing the Pearson correlation with actual birth weight, and calculating the random error, systematic error, proportion of estimates within 10% of birth weight, and Euclidean distance. Results The mean gestational was 26.8 ± 2.4 weeks at admission, and 28.2 ± 2.6 weeks at delivery. Most formulas were strongly correlated with actual birth weight (r > 0.9 for 19/21 formulas). Mean systematic error was − 4.30% and mean random error was 14.5%. The highest performing formula, by the highest proportion of estimates and lowest Euclidean distance was Ott (1986), which uses abdominal and head circumferences, and femur length. However, there were minimal difference with all of the first 10 ranking formulas. The Pearson correlation coefficient for the Hadlock IV formula was strong at r = 0.935 (p < 0.001), with 319 (56.5%) of measurements falling within 10%, 408 (72.2%) within 15% and 455 (80.5%) within 20% of actual birth weight. This correlation was unaffected by gender (r = 0.936 for males, r = 0.932 for females, p < 0.001 for both) or by amniotic fluid level (r = 0.935 for mean vertical pocket < 2 cm, r = 0.943 for mean vertical pocket ≥2 cm, p < 0.001 for both). Conclusions In women with singleton gestation and PPROM, the Ott (1986) formula for EFW was the most accurate, yet all of the top ten ranking formulas performed quite well. The commonly used Hadlock IV performed quite similarly to Ott’s formula, and is acceptable to use in this specific setting.

show abstract

Estimated fetal weight accuracy in pregnancies with preterm prelabor rupture of membranes by the Hadlock method

Cited by 4 publications

References 19 publications

Detection of small for gestational age in preterm prelabor rupture of membranes by Hadlock versus the Fetal Medicine Foundation growth charts

Detection of small for gestational age in preterm prelabor rupture of membranes by Hadlock versus the Fetal Medicine Foundation growth charts

The accuracy of sonographic fetal weight in very preterm infants (≤32 weeks)

Comparison of sonographic fetal weight estimation formulas in patients with preterm premature rupture of membranes

Contact Info

Product

Resources

About