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Teknisk gennemførlighedsundersøgelse af ultralydsmuskelbilleddannelse i antenatal ultralyd (FetUS)

1. oktober 2026 opdateret af: University Hospital, Grenoble

Teknisk gennemførlighedsundersøgelse af ultralydsmuskelbilleddannelse i antenatal ultralydsscreening af medfødt multipel arthrogryposis

The objective of the study is to evaluate the performance of muscle ultrasound sections on antenatal ultrasound between 21-24 amenorrhea weeks for the screening of muscle atrophy, in a sample of low-risk and high-risk pregnancies of congenital multiple arthrogryposis

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Frequent rare diseases (100-200 births in France / year), congenital multiple arthrogryposis include a set of pathologies characterized by the limitation of joint movements at least two joint levels.Their functional prognosis and muscle atrophy are often severe after birth.

Routine ultrasound call signs are either non-specific or insensitive and difficult to detect due to time constraints. Antenatal ultrasound screening is not very effective for these pathologies, which are often particularly serious.

The main criterion will be the success rate of realization of all four ultrasound sections at the extremities (deltoide, biceps, quadriceps, triceps) and measurements of the distances "skin - muscle fascia" and "muscular fascia - periosteum" between 21-24 amenorrhea weeks

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

230

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Isère
      • La Tronche, Isère, Frankrig, 38700
        • Rekruttering
        • university hospital of Grenoble
        • Kontakt:
        • Kontakt:
        • Ledende efterforsker:
          • Christine Ravier, Midwife
    • Rhone

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 55 år (Voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  • Any pregnant woman consulting in one of the two obstetric gynecology departments in connection with the CPDPN (Multidisciplinary Prenatal Diagnostic Centers) of the University hospitals of Lyon or Grenoble.
  • Mono-embryonic pregnancy.
  • Gestational ages retained on the first dating ultrasound or the 1st trimester ultrasound between 21-24 amenorrhea weeks.
  • For women at "high risk": diagnosis during ultrasound of the 1st, 2nd, or 3rd trimesters, of an abnormality of position / deformation of one or more joints, and / or an abnormality of fetal movements on screening ultrasound or interrogation (population group at "high risk of AMC").
  • Regulatory criteria: adults, affiliated to a social security scheme, having signed a consent

Exclusion Criteria:

  • Multiple pregnancies, and / or non-progressive .
  • Obese women (BMI > 30 in early pregnancy)
  • Subject in a period of exclusion from another study
  • Subject under administrative or judicial supervision
  • Subject who cannot be contacted in case of emergency

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: high risk of Arthrogryposis AMC

Patient with a diagnosis during the 1st, 2nd, or 3rd trimester ultrasound, of an abnormality of position / deformation of one or more joints, and / or an abnormality of fetal movements at screening ultrasound or interrogation

ultrasound muscle imaging technique in antenatal ultrasound screening of congenital multiple arthrogryposis

Aktiv komparator: low risk of Arthrogryposis AMC

Patient coming for screening ultrasound

ultrasound muscle imaging technique in antenatal ultrasound screening of congenital multiple arthrogryposis

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Rate of achievement (success) of all four sections at the extremities
Tidsramme: 72 hours +/- 24 hours

Rate of achievement (success) of all four sections at the extremities for measurements (in mm) of the distances "skin - muscular aponeurosis" and "muscular aponeurosis- periosteum" between 21-24 amenorrhea weeks

72 hours +/- 24 hours

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Rate of achievement (success) of each four sections
Tidsramme: 72 hours +/- 24 hours

Rate of achievement (success) of measurements (in mm) of the distances "skin - muscular aponeurosis" and "muscular aponeurosis- periosteum" between 21-24 amenorrhea weeks for biceps, deltoide, quadriceps and sural triceps

72 hours +/- 24 hours
Collect the raisons for the failure of achievement of all sections
Tidsramme: 72 hours +/- 24 hours

Collect the raisons for the failure of achievement of all sections (Inadequate foetal position,Insufficient echogenicity, Reasons related to the position of the limbs (full extension or flexion of the elbows or knees, abduction of the shoulder, other), other raison (to be specified)

72 hours +/- 24 hours
Duration of realization of the ultrasound sections
Tidsramme: 72 hours +/- 24 hours

Duration of realization of the ultrasound sections (investigators make an hypotheses of a duration of 3 minutes necessary for the realization of the sections

72 hours +/- 24 hours
Comparison of the completion rates of all cuts during ultrasounds between high- and low-risk patients
Tidsramme: 72 hours +/- 24 hours

Comparison of the completion rates of all cuts during ultrasounds between high- and low-risk patients

72 hours +/- 24 hours
Concordance of measures (CCI coefficient) will be evaluated in intra-observer and inter-observer respectively
Tidsramme: 72 hours +/- 24 hours

Concordance of measures (CCI coefficient) will be evaluated in intra-observer and inter-observer respectively by dividing by half the high-risk pregnancies, to whom it will be proposed a 2nd ultrasound of the 2nd trimester, within 3 days (±24) hours by the same / another referent sonographer in the same center. A group of 30 low-risk pregnancies will be evaluated in the same way, with the study of intra-observer reproducibility in 15. The sample of 30 pregnancies in which two measurements are made makes it possible to obtain a lower bound of the 95% confidence interval of the intra-class correlation coefficient greater than 0.7, if this coefficient is 0.85 or more. This threshold is usually considered to reflect a satisfactory concordance.

72 hours +/- 24 hours

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Klaus DIETERICH, MD,PhD, Univ. Grenoble Alpes Inserm U1209 IAB CHU Grenoble Alpes

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

12. maj 2024

Primær færdiggørelse (Anslået)

30. november 2026

Studieafslutning (Anslået)

31. december 2026

Datoer for studieregistrering

Først indsendt

24. april 2023

Først indsendt, der opfyldte QC-kriterier

9. november 2023

Først opslået (Faktiske)

14. november 2023

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

6. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

1. oktober 2026

Sidst verificeret

1. april 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 38RC21.0423

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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