Birth Weight
Conditions
Keywords
Birth weight Prediction, Two-dimensional Ultrasonography, Three-dimensional Ultrasonography
Brief summary
To determine the value of principal component analysis in the combined method of three-dimensional ultrasonography assessing fetal limb volume and circumference and conventional two-dimensional ultrasonography for prediction of birth weight in southern Chinese population.
Detailed description
A prospective study was performed on single pregnant women in third trimester. Three- and two-dimensional ultrasonography for fetal biometric parameters were measured within 7 days of delivery. Stepwise linear regression were used to develop a new prediction model based on values from limb parameters and traditional measurements in development group. Estimated and actual birth weight were compared between the new model and previously published formulas on absolute error and percentage error. The accuracy of the model in predicting fetal birth weight was reassured by validation group.
Interventions
DIAGNOSTIC_TEST2D and 3D ultrasonography
All of the examinations are performed with the same transabdominal ultrasonic transducer (RAB 2-5-D) on the same E8 (GE Medical Systems, Milwaukee, WI, USA) ultrasonic machine experienced operators. 2D ultrasonic measurements includes 5 standard fetal biometry parameters, and after routine 2D ultrasonography, the acquisition of 3D measurements are performed.
Sponsors
Zhujiang Hospital
Nanfang Hospital, Southern Medical University
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
DIAGNOSTIC
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Healthy volunteers
Yes
Inclusion criteria
* The inclusion criteria consisted of well-defined gestational age (GA), singleton pregnancy and delivery in our hospital within 7 days from the scan performed for acquisition of 2D and 3D ultrasonographic data.
Exclusion criteria
* The
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Estimated birth weight in g | 7 days within delivery | Estimated birth weight (g) calculated by a new formula generated from ultrasonograohic parameters in development group using statistical analysis. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Absolute error in g | After birth | Absolute error (g) calculated from estimated birth weight (g) and actual birth weight (g) |
| Percentage error in % | After birth | Percentage error (%) calculated from estimated birth weight (g) and actual birth weight (g) |
Countries
China
Contacts
Primary ContactFang Yang
Outcome results
None listed