Utility of Formulas Using Fetal Thigh Soft Tissue Thickness in Estimating Weight in Gastroschisis.
fetal growth restriction
gastroschisis
small for gestational age
ultrasound indicators
Journal
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine
ISSN: 1550-9613
Titre abrégé: J Ultrasound Med
Pays: England
ID NLM: 8211547
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
08
11
2019
revised:
17
03
2020
accepted:
29
03
2020
pubmed:
23
4
2020
medline:
15
5
2021
entrez:
23
4
2020
Statut:
ppublish
Résumé
To evaluate the utility of the fetal thigh soft tissue thickness (STT) in calculating the estimated fetal weight (EFW) in fetuses with gastroschisis versus the standard formula of Hadlock et al (Am J Obstet Gynecol 1985; 151:333-337) compared to the actual birth weight (ABW). A retrospective study of neonates born with gastroschisis delivered at our institution was performed. Two reviewers measured the fetal thigh STT on saved images. The estimated gestational age, fetal biometric measurements, and ABW were abstracted. In addition to the Hadlock formula, 3 STT-based formulas reported by Scioscia et al (Ultrasound Obstet Gynecol 2008; 31:314-320) and Kalantari et al (Iran J Reprod Med 2013; 11:933-938) were used to calculate the EFW. Eighty-two patients with gastroschisis qualified for inclusion in our study. The mean STTs ± SD as measured by readers 1 and 2 were 10.9 ± 2.7 and 10.6 ± 2.7 mm, respectively. Seventeen (21%) fetuses were small for gestational age at birth. The Hadlock formula underestimated the EFW relative to the ABW, with an average difference of -97 g (-3.9%) and - 5.1% in terms of growth percentiles. All of the STT-based EFW formulas overestimated the EFW on average by 327 to 701 g (13%-24%) in terms of weight and 26% to 52% in terms of growth percentiles. The Hadlock formula classified 22 as having intrauterine growth restriction (sensitivity, 65%; specificity, 83%, based on the ABW). None of the STT-based formulas classified any fetuses as intrauterine growth restricted. In a group of patients with gastroschisis, we found that the EFW by the fetal thigh STT calculation overestimated the average fetal weight in all of our cases.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1977-1983Informations de copyright
© 2020 by the American Institute of Ultrasound in Medicine.
Références
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