Prenatal US Assessment of Superior Mesenteric Vessels for Digestive Rotation

Study Overview
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Brief Summary
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Digestive malrotation is an anatomical anomaly of the positionning of the mesenteric vessels and the digestive tract that can lead in some form to a dangerous neonatal complication: intestinal volvulus. This requires emergency surgery with a risk of digestive resection. Visualizing during pregnancy the normal or abnormal anatomical positionning of the mesenteric vessels could make it possible to diagnose this malrotation and prevent the occurrence of this complication. The aim of the study is ti evaluate the ability to identiy prenataly during ultrasound examination, the relative positionning of the fetal mesenteric vessels, and then to correlate it with the real postnatal positionning (gold standard)

Detailed Description
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Prenatal US assessment of mesenteric vessels positioning (relative position of the vein vs artery) during routine 3rd trimester US scan Description of various anatomical situation Comparison of this prenatal positioning with postnatal positioning obtained through abdominal ultrasound examination. Post-natal ultrasound being the gold standard

Official Title
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Prenatal Ultrasound Assessment of the Relative Position of the Superior Mesenteric Artery and Vein to Define the Status of Digestive Rotation: a Prenatal Tool of Intestinal Malrotation Diagnosis?

Conditions
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Singleton-Merten Syndrome, Postnatal Complication

Intervention / Treatment
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* Other: Ultrasound exam
* Other: Postnatal abdominal ultrasound
* Other: Pediatric Follow up


Participation Criteria
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Eligibility Criteria
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Inclusion criteria: Pregnant women attending for 3rd trimester ukltrasound Uneventfull pregnancy No foetal malformation Singleton pregnancy Age >18 years Exclusion criteria: - Other condition

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Normal foetus<br>All pregnant women reffered for 3rd trimester routine ultrasound examination without any fetal abnormality | Other: Ultrasound exam<br>* Ultrasound exam<br>Other: Postnatal abdominal ultrasound<br>* Postnatal abdominal ultrasound<br>Other: Pediatric Follow up<br>* Pediatric Follow up<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prenatal ultrasound evaluation | Prenatal ultrasound evaluation, during 3rd trimester routine scan, of the relative positioning of the superior mesenteric vein in comparison to the superior mesenteric artery | day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prenatal ultrasound evaluation | Prenatal ultrasound evaluation, during 3rd trimester routine scan, of the relative positioning of the superior mesenteric artery in comparison to the superior mesenteric vein | day 1 | 
| Prenatal ultrasound evaluation | Prenatal ultrasound evaluation, during 3rd trimester routine scan, of the relative positioning of the superior mesenteric artery in comparison to the superior mesenteric aorta | day 1 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Evolution and complication, Mesenteric vessels positionning, 3rd ultrasound examination, Pediatric follow up +/- treatment