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Estimation of Fetal Weight by Measuring Abdominal Circumference, Abdominal Subcutaneous Soft Tissue Thickness, Femur Length and Mid-thigh Soft Tissue Thickness

NCT07575152 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 300

Last updated 2026-05-12

No results posted yet for this study

Summary

Traditional methods for estimating fetal weight (EFW) often miss the mark because they focus on bone and circumference while ignoring fetal fat. This study proposes a more inclusive formula to fix that. Current models (using BPD, HC, AC, and FL) are the standard but suffer from high observer variability. These formulas struggle at the extremes (macrosomia or growth restriction) and fail to account for fetal adiposity, which makes up 10-12% of a newborn's mass. The study introduces a novel formula that moves beyond simple bone measurements by integrating Soft Tissue Thickness (STT). By accounting for a broader range of biological variants and fat distribution, this new model aims to provide a non-inferior, more precise predictive value for fetal weight compared to traditional methods.

Conditions

  • Fetal Macrosomia
  • Intrauterine Growth Disorders (IUGR and Macrosomia)
  • Intrauterine Growth Restriction (IUGR)

Interventions

OTHER

3rd trimester ultrasound examination within 48-72 hours of delivery

ultrasound examination of full-term pregnant women with 48-72 hours of delivery measuring Abdominal circumference, fetal abdominal subcutaneous soft tissue thickness, femur length and mid-thigh soft tissue thickness.

Sponsors & Collaborators

  • Assiut University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-07-01
Primary Completion
2027-12-30
Completion
2028-07-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07575152 on ClinicalTrials.gov