Reproducibility of the Measurement of the Right Portal Vein Diameter

Study Overview
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Brief Summary
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Although routine ultrasound is offered during the third trimester of pregnancy, less than a quarter of newborns with intrauterine growth retardation (IUGR) are suspected antenatally. The measurement of the right portal vein (RPV) diameter on the transverse abdominal view at the 32 weeks' scan may be a new a tool for detecting small-for-gestational-age (SGA) at birth. The irregular and collapsed aspect of the right portal vein (RPV) on the third trimester ultrasound could be used for identifying hypoxemic and growth-restricted fetuses. However, to our knowledge, the only interoperator reproducibility study of this measurement was performed using the same stored images or datasets without performing a new examination. The main objective of this study is to assess the intra and interoperator reproducibility of the measurement of the right portal vein diameter at the routine third trimester ultrasound. The secondary objective is to quantify the interoperator reproducibility of the assessment of the aspect, normal or collapsed, of the right portal vein, using an evaluation grid. Two referees will perform four successive measurements of the diameter of the right portal vein (RPV) during the same ultrasound examination at the third trimester. Each operator will qualify the appearance of the right portal vein as normal or collapsed using an evaluation grid, and will independently performe a series of two measurements using the same method.

Official Title
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Intra and Interoperator Reproducibility of the Measurement of the Right Portal Vein Diameter at the Third Trimester Scan

Conditions
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Intrauterine Growth Retardation (IUGR)

Intervention / Treatment
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* Other: Ultrasound


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Women carrying a pregnancy from 30 weeks to 33 weeks either normal or with IUGR, Patient without guardianship or curatorship or subordination, Patient benefiting from a Social Security scheme Exclusion Criteria: Presence of a fetal malformation, Multiple pregnancy, Premature rupture of membranes, History of bariatric surgery, Body mass index (BMI)> 30 kg / m2, Patient benefiting from enhanced protection, namely: minors, persons deprived of their liberty by a judicial or administrative decision, persons staying in a health or social establishment, adults under legal protection.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| IUGR<br>sample of 40 pregnant women affected by intrauterine growth restriction (IUGR) Two referees will perform four successive measurements of the diameter of the right portal vein (RPV) during the same ultrasound examination at the third trimester. Each operator will qualify the appearance of the right portal vein as normal or collapsed using an evaluation grid, and will independently performe a series of two measurements using the same method. | Other: Ultrasound<br>* Assessment the intra and interoperator reproducibility of the measurement of the right portal vein diameter at the routine third trimester ultrasound<br>* Other names: Third trimester ultrasound;|
| NORMAL<br>Ssample of 40 healthy pregnant women Two referees will perform four successive measurements of the diameter of the right portal vein (RPV) during the same ultrasound examination at the third trimester. Each operator will qualify the appearance of the right portal vein as normal or collapsed using an evaluation grid, and will independently performe a series of two measurements using the same method. | Other: Ultrasound<br>* Assessment the intra and interoperator reproducibility of the measurement of the right portal vein diameter at the routine third trimester ultrasound<br>* Other names: Third trimester ultrasound;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Measurement of the right portal vein diameter | Intra and interoperator reproducibility of the measurement of the right portal vein diameter at the routine third trimester ultrasound | Through study completion, an average of 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Aspect of the right portal vein diameter | Interoperator reproducibility of the assessment of the aspect, normal or collapsed, of the right portal vein, using an evaluation grid | Through study completion, an average of 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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small-for-gestational-age, right portal vein, third-trimester ultrasound, intra and inter-operator reproducibility