- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02443597
Can Increased Body Mass Index Prevent Adequate Ultrasound Examination for Trisomy 21 Risk Assessment?
Study Overview
Detailed Description
Obesity is a common public health problem which is increasing worldwide at an alarming rate. According to National nutrition survey statistics of 2007, the prevalence of obesity in the kingdom of Saudi Arabia was 23.6% in women and 14% in men. Also the prevalence of overweight in the Saudi community was determined to be 30.7% for men as compared to 28.4% for the women.
First trimester screening between 11-14 weeks gestation is known to be an effective and reliable screening test for Down syndrome and trisomy 18.First trimester screening allows earlier identification of the pregnancy at risk for fetal aneuploidy and anatomic defects, particularly, cardiac anomalies, therefore, providing an option of earlier diagnosis by chorionic villus sampling and analysis of amniocytes.
The well-known association of obesity during pregnancy with a variety of maternal and fetal complications increases the importance of early aneuploidy screening.
Fetal aneuploidy risk assessment is based on a combination of maternal age, prior affected pregnancy or family history, maternal serum biochemical tests and fetal ultrasound markers.
The impact of obesity on the quality of prenatal ultrasound examination is well established with a greater risk for suboptimal visualization, in particular, the fetal cardiac structures and the craniospinal structures only when body mass index above the 90th percentile.
The quality of prenatal screening for aneuploidy via nuchal translucency thickness measurement is significantly limited among obese pregnant women, thus, increased risk of fetal anomalies.
Gandhiet al, have noted that increased BMI is not associated with suboptimal visualization of nuchal translucency, but it is associated with a longer time to perform the first-trimester ultrasound examination for aneuploidy risk assessment, increased need for transvaginal ultrasound examination for optimum nuchal translucency visualization.
There is evidence suggesting that fetal anatomic evaluation in the low-risk gravida can be better accomplished in the first trimester using the transvaginal route, providing a valuable option for obese patients.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
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Asir,
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Khamis Mushait,, Asir,, Saudi Arabia, 101
- antenatal clinic of Armed Forces Hospital, Southern Region
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- women who have a live, intrauterine, singleton pregnancy between 11- 14 weeks gestation.
Exclusion Criteria:
- multiple gestation.
- fetal size outside of nuchal translucency screening age (crown-rump length (CRL) outside of 46-71 mm).
- presence of a cystic hygroma.
- fetal demise.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
obese pregnant women
With the use of trans-abdominal ultrasound, the following measurements will be recorded:
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trans abdominal or trans vaginal ultrasound to detect some of the soft markers of trisomy screening
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lean pregnant women
With the use of trans-abdominal ultrasound, the following measurements will be recorded:
|
trans abdominal or trans vaginal ultrasound to detect some of the soft markers of trisomy screening
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Cutoff body mass index for the use of transvaginal ultrasound for aneuploidy risk assessment.
Time Frame: 30 minutes
|
30 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The time of the study. (time needed for satisfactory ultrasound risk assessment in minutes)
Time Frame: 30 minutes
|
time needed for satisfactory ultrasound risk assessment in minutes
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30 minutes
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The tolerance of the woman for trans-vaginal ultrasound.
Time Frame: 30 minutes
|
preference of the patients towards transabdominal and transvaginal ultrasound
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30 minutes
|
The harmful effect to the patient
Time Frame: 12 hours
|
Infection, Bleeding, Injury to vagina or cervix and uterine irritability.
|
12 hours
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: magdy eldumairy, Armed Forces Hospitals, Southern Region, Saudi Arabia
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- AFHSRMREC/2015/OB/GYNAE/053
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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