- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03002246
Automated Fetal Weight Estimation: A Multicenter Validation Using Fractional Limb Volume
Study Overview
Status
Intervention / Treatment
Detailed Description
Ultrasound has been used for over 20 years to estimate fetal weight prior to birth. Sometimes this estimation is not always similar to what the baby actually weighs. In addition to the regular measurements taken at routine ultrasound exams, 3D ultrasound of the baby's arm and leg soft tissue may give us more precise information on how much the baby weighs. This measurement is called fractional limb volume. Fractional limb volume (FLV) is a soft tissue measurement of the arm or thigh that can be used to evaluate body composition. This measurement mostly reflects the fat and muscle development with a small amount of bone.
The recent introduction of 5D Limb Volume software (Samsung, Seoul, Korea) now makes it possible to efficiently and reproducibly measure semi-automated FLV using a computer guided technique.
Subjects will receive one ultrasound scan 4-7 days before their delivery. Both 2D and 3D measurements will be taken. These measurements will then be used to estimate fetal weight. We will compare estimated weight to actual birth weight in order to determine the accuracy and precision of the 5D Limb Volume technology. This data may also be used to develop new weight estimation models that could provide better accuracy and/or precision than what is currently provided using published methods.
Study Type
Enrollment (Actual)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Pregnant women (28-42 weeks) within 4-7 days of delivery
- Planned delivery at the collaborating hospital where the fetal US scan was performed
- Body mass index at first official prenatal appointment below 35.0 kg/M2
- Firm US dating criteria (early crown-rump length < 14 weeks gestational age)
Exclusion Criteria:
- Presence of technical factors (e.g. obesity) that make it difficult to visualize fetal structures
- Oligohydramnios determined by amniotic fluid index less than 5cm
- Fetal distress or unstable maternal condition
- Structural or chromosomal fetal anomalies
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Average for Gestational Age
This cohort will include a sample size of 90 subjects.
Fetuses will have an estimated fetal weight greater than 10th percentile and less than 90th percentile based on clinical ultrasound assessment.
This cohort will receive an ultrasound examination 4-7 days before their delivery.
|
Research volunteers will be invited to have a 2D/3D ultrasound research scan 4-7 days from delivery.This ultrasound scan will take approximately 30 minutes to complete.
|
Large for Gestational Age
This cohort will include a sample size of 30 subjects.
Fetuses will have an estimated fetal weight greater than 90th percentile based on clinical ultrasound assessment.This cohort will receive an ultrasound examination 4-7 days before their delivery.
|
Research volunteers will be invited to have a 2D/3D ultrasound research scan 4-7 days from delivery.This ultrasound scan will take approximately 30 minutes to complete.
|
Small for Gestational Age
This cohort will include a sample size of 30 subjects.
Fetuses will have an estimated fetal weight less than 10th percentile based on clinical ultrasound assessment.This cohort will receive an ultrasound examination 4-7 days before their delivery.
|
Research volunteers will be invited to have a 2D/3D ultrasound research scan 4-7 days from delivery.This ultrasound scan will take approximately 30 minutes to complete.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison Between 5D Limb Vol and 2D Birth weight Prediction
Time Frame: Feb 2017 -Feb 2018
|
Compare the accuracy and precision of BW predictions based on 5D Limb Vol technology in pregnant women as compared to 2D BW prediction models
|
Feb 2017 -Feb 2018
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Birth weight Predictions in Suspected Growth Abnormalities
Time Frame: Feb 2017 - Feb 2018
|
Characterize the performance of BW predictions based on 5D Limb Vol technology in pregnant women with suspected growth abnormalities.
|
Feb 2017 - Feb 2018
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Wesley Lee, MD, Baylor College of Medicine
Publications and helpful links
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- H-39343
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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