- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04350632
Reproducibility of External Anal Sphincter Elastic Properties Assessment Using Elastography During Pregnancy (SEA ELASTO 1)
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Investigations Assessment of the external anal sphincter viscoelastic properties using shear wave elastography technology using a transperineal approach in term pregnant women in two visits (the 1st one with only one observer and the second one with two observers)
Follow up Prospective study including nulliparous term pregnant women with 2 visits planned, spaced at least by 12 hours and, for the most, 7 days.
Primary outcome: The mean value of shear modulus measures in the external anal sphincter for the three considered conditions (rest, Valsalva maneuver and contraction) at each visit and for each observer with a calculation of Intraclass Correlation Coefficient and Variation Coefficient.
Secondary outcomes: The secondary outcomes will be the percentage of completed procedure (ability to see the external sphincter and to obtain a measure of the shear modulus), the existence of a perineal tear according the RCOG-OMS classification and the answer to an acceptability question.
Study design: Prospective monocentric study including nulliparous term pregnant women with two visits spaced of at least 12 hours and, for the most, 7 days.
Interventions: Assessment of the external anal sphincter viscoelastic properties using shear wave elastography technology
- Women in lithotomy position with an empty bladder
- The linear probe is applied on transversal plane on the perineal with a transperineal approach
- The external anal sphincter will be identified in 2D ultrasound using a SL 18-5 linear probe
- Viscoelastic properties of the muscle will be assessed by measuring the shear modulus at rest, Valsalva maneuver and contraction
- Exactly the same investigations will be performed for the two visits planned in the protocol. In the first visit, it will be one single observer and for the second it will be 2 observers.
- Data about the mode of delivery and the occurrence of OASI will be collected into women's medical file
Number of subjects: 40 volunteers pregnant women are planned for this research
Statistical analysis: The number of successful procedures will be reported as effectives and percentages.
Reproducibility will be reported by calculating the coefficient of variation and the intraclass correlation coefficient. The level of significance will be considered for p<0.05
Conditions : Obstetric anal sphincter injury
Keywords: OASI; childbirth; perineal traumatism; delivery; biomechanics; shear wave elastography
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Bertrand GACHON, MD, PhD student
- Phone Number: +33 5 49 44 39 45
- Email: bertrand.gachon@chu-poitiers.fr
Study Locations
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-
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Poitiers, France, 86000
- Recruiting
- CHU de Poitiers
-
Contact:
- Bertrand GACHON
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- pregnant women aged of 18 years or more
- 37 weeks or more of pregnancy
- without any previous delivery (vaginal or cesarean delivery)
- body mass index < 35Kg.m-2
- without history of Crohn's disease
- without history of peri anal surgery
- without any proctologic disease
- without any muscular chronic disease
- having a normal pregnancy
- without any untreated psychiatric disorders
- without any judicial protection
- affiliated to a health insurance
Exclusion Criteria:
- pregnant women younger than 18 years old
- obstetric term inferior than 37 weeks
- history of vaginal and/or cesarean delivery
- body mass index of 35Kg.m-2 or more
- history of Crohn's disease
- history of peri anal surgery
- proctologic disease
- muscular chronic disease
- pathological pregnancy (intrauterine growth restriction, pre eclampsia etc..)
- untreated psychiatric disorders
- women under judicial protection
- women without affiliated to a health insurance
Study Plan
How is the study designed?
Design Details
- Primary Purpose: PREVENTION
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
value of shear modulus measures in the external anal sphincter for each visit with the calculation of the ICC
Time Frame: up to seven days
|
The mean value of shear modulus measures in the external anal sphincter for the three considered conditions (rest, Valsalva maneuver and contraction) at each visit and for each observer with a calculation of Intraclass Correlation Coefficient
|
up to seven days
|
value of shear modulus measures in the external anal sphincter for each visit with the calculation of the coefficent of variation
Time Frame: up to seven days
|
The mean value of shear modulus measures in the external anal sphincter for the three considered conditions (rest, Valsalva maneuver and contraction) at each visit and for each observer with a calculation of Variation Coefficient
|
up to seven days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Perineal tears at childbirth
Time Frame: up to 4 weeks
|
the existence of a perineal tear according the RCOG-OMS classification
|
up to 4 weeks
|
Feasibility of the assessment of the external anal sphincter: percentage of completed procedure
Time Frame: up to seven days
|
percentage of completed procedure (ability to identify the extarnal anal sphincter and to perform a shear wave elastography assessment)
|
up to seven days
|
Acceptability of the procedure: question with a scale
Time Frame: up to seven days
|
answer to the acceptability question with a scale from 0 to ten
|
up to seven days
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2020-A00762-37
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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