- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04187612
Association of Body Fluid Distribution With Obstructive Sleep Apnea in Pregnant Women With Body Mass Index ≥ 40 kg/m2
Association of Body Fluid Distribution With Obstructive Sleep Apnea in Pregnant Women With Body Mass Index ≥ 40 kg/m2 - A Prospective Observational Study
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
It is already established that the increasingly prevalent condition of obesity is linked to OSA in pregnancy. Obesity is increasingly prevalent This study will evaluate a novel method of screening for OSA in the obese pregnant population, thereby treating this condition reducing the ill effects to mother and fetus.
This will be a prospective observational cohort study. Eligible participants will be approached for consent during their third-trimester antenatal all-day clinic visit. Body water will be measured by connecting electrodes to participants hands, feet and neck whilst lying supine for approximately 15 minutes.
Data on patient demographics, BMI, medical conditions, water body composition and indicators of OSA (breathing pattern and oxygen levels during sleep) will be collected, as well as data from patients' sleep tests as ordered by their physician.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Locations
-
-
Ontario
-
Toronto, Ontario, Canada, M5G1X5
- Mount Sinai Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Participants who give written informed consent
- Pregnant women in the third trimester of pregnancy
- Grade III obesity
- Patients who have prior diagnosis of OSA within the last one year, and non-compliant to treatment such as continuous positive airway pressure (CPAP), or dental appliance
- Patients suspected to have OSA based on screening questionnaire (see page 2, OSA-Diagnostic tools for further details)
Exclusion Criteria:
- Fluid overload states including renal disease, liver disease and congestive heart failure
- Prior history of vascular surgery in the lower limbs such as varicose vein surgery, vascular by-pass surgery or evidence of venous efficiency.
- Patients with metal implants in lower limbs or spine, due to possible interference with the leg impedance signals. 58
- Participants with diagnosed OSA treated with Continuous Positive Airway Pressure (CPAP).
- Patients requiring urgent sleep physician referral (within four weeks) due to serious medical conditions or safety critical-occupations according to the 2011 Canadian Thoracic Society (CTS) guideline 59 e.g. unstable ischemic heart disease, recent cerebrovascular disease.
- Implantable cardiac devices
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Total body water measurement
Total body water will be measured using Bioelectrical Impedance Analysis (BIA).
|
BIA will be used to determine total body water
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Presence of sleep apnea
Time Frame: 12 hours
|
The diagnosis of sleep apnea will be made using apnea hypopnea index (AHI).
A diagnosis of OSA is present if a person has an AHI ≥5/hour.
|
12 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Total body water measurement
Time Frame: Following consent, this measurement will be done, and will take approximately 30 minutes
|
Total body water will be measured using Bioelectrical Impedance Analysis (BIA)
|
Following consent, this measurement will be done, and will take approximately 30 minutes
|
Mallampati score
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
The patient is asked to open their mouth wide and stick out their tongue.
Upon observation, the view is classified/scored as Class 1-4.
Class one would be least likely to have airway problems and 4 most likely.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Thyromental distance (cm)
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
The distance between the thyroid notch and the tip of the jaw with the head extended is evaluated.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Subluxation of mandible beyond maxilla
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
The patient is asked to extend their mandible beyond the top lip if possible.
Scoring is yes or no.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Neck extension
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
The patient is asked to extend their neck, looking upwards and back, as far as comfortably possible.
Scoring is yes if movement is possible, no if extension is not possible.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Height (cm)
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
Height measured in cm to calculate Body Mass index (BMI)
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Weight (kg)
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
Weight measured in kg to calculate Body Mass index (BMI)
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Neck size
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
Circumference around the neck, measured in centimeters.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Questionnaire related to snoring
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
Patients will be asked if they snore, if others can hear their snoring and if they are bothered by it.
Yes or no answers.
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Done during initial exam following consent, this exam will take 1-2 minutes
|
Questionnaire related to sleep
Time Frame: Done during initial exam following consent, this exam will take 1-2 minutes
|
Patients will be asked if they wake frequently during sleep, if they wake with a choking sensation, and whether they doze off or fall asleep while sitting/talking.
Yes or no answers.
|
Done during initial exam following consent, this exam will take 1-2 minutes
|
Collaborators and Investigators
Investigators
- Principal Investigator: Mrinalini Balki, MD, Mount Sinai Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
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
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 19-06
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
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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