Third-Trimester Conditional Reference Values for Longitudinal Fetal Growth Assessment.
Fetal Diagn Ther
; 43(1): 34-39, 2018.
Article
em En
| MEDLINE
| ID: mdl-28601881
ABSTRACT
OBJECTIVES:
The aim of this study was to derive longitudinal reference values of fetal growth (estimated fetal weight [EFW] and abdominal circumference [AC]) during the third trimester and to develop coefficients for conditional growth assessment. PATIENTS ANDMETHODS:
A prospective cohort study was conducted involving consecutive singleton pregnancies in a low-risk population for a routine third-trimester scan at 30+0-34+6 weeks and follow-up at 37+0-38+6 weeks for an additional ultrasound. Statistical analysis was based on multilevel modeling using MLwiN software. Unconditional centiles were calculated from z-values at each gestational age, and conditional centiles were calculated from z-values at a given measurement (30-34 weeks) and the expected measurement (37-38 weeks).RESULTS:
At 30-34 weeks, 8 and 9.3% of the fetuses had an unconditional EFW below the 10th and above the 90th centile, respectively. At 37-38 weeks, these figures were 10.3 and 9.3%, respectively. Regarding the unconditional AC, at the first scan, 8.9 and 9.6% had values below the 10th and above the 90th centile, while at the second scan 10.5 and 10.5% had values below the 10th and above the 90th centile, respectively. The proportion with a conditional EFW below the 10th and above the 90th centile was 10.2 and 9.4% at the second scan, respectively. For conditional AC, these figures were 10.7 and 10.3%, respectively.CONCLUSION:
We have produced reference centiles for EFW and AC growth during the third trimester as a useful tool for quantifying growth.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ultrassonografia Pré-Natal
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Peso Fetal
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Desenvolvimento Fetal
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Abdome
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Male
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Newborn
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Pregnancy
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article