Obesity: Prospective Evaluation of Upper Airway Obstruction and Compliance in Obese Patients in Pre and Post Bariatric Surgery

NCT03360565 | Unknown

• 1 other identifier: 2017-A02883-50
• Study Type: observational
• Target: 130
• Locations: 1 country
• Sites: 1

Brief Summary

This clinical trial is a monocentric, prospective, observational and controlled trial (historical cohort control group of healthy non-obese subjects who had Nasal functional exploration for Snoring) as part of current care. This study concerns the prevalence of obstructive sleep apnea syndrome (OSAS). OSAS is elevated in subjects with morbid obesity (BMI≥40) (on average 70%). International recommendations agree on the need to seek OSAS before bariatric surgery because of the high risk of complications. Increased nasal resistance could also be related to a limitation of inspiratory flow due to an abnormality of the elasticity of the nasal mucosa or "nasal compliance". Adipose infiltration of the nasal mucosa may occur during obesity. These tissue changes (decreased vaso-erectile tissue and increased adipose tissue) could modify the nasal compliance, which the decrease would be a possible factor of severity of OSAS in obese patients. Screening for an abnormality of compliance could also anticipate a difficulty of equipment for Continuous Positive Airway Pressure (CPAP) in the case of associated OSAS. All patients who must have bariatric surgery and get in the criteria are included. They will have to do a medical checkup pre and post-operative (polygraphy + ear/nose/throat assessment (ENT) + Nasal functional exploration). They will be followed for 13 to 24 months. The main objective of this research is to demonstrate a reduction of at least 30% of nasal compliance in a group of obese subjects (BMI\> 35) compared to a control group of healthy subjects. The secondary objectives are to is to demonstrate an increase of 30% in resistance in patients with BMI\> 35 compared to control group and a normalization of nasal compliance 1 year after surgery when their weight is normalized (BMI \<30). A study period of 4 years is planned.

Conditions

Obesity; Bariatric Surgery

Keywords

Obstructive Sleep Apnea Syndrome (OSAS)

Outcome Measures

Primary Outcomes (1)

• To demonstrate a reduction of at least 30% of nasal compliance in a group of obese subjects (BMI> 35) compared to a control group of healthy subjects

  before bariatric surgery

Secondary Outcomes (2)

• To demonstrate an increase of 30% in resistance in patients with BMI> 35 compared to control group

  before bariatric surgery

• To demonstrate a normalization of nasal compliance when the weight is normalized (BMI <30)

  9 month (+3month) after bariatric surgery

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

The participation to the study will be proposed to all patients who must have bariatric surgery and have a preoperative assessment

You may qualify if:

• Voluntary Patient
• Patients aged 18 years or older.
• BMI \> 35
• Patient included in the bariatric surgery protocol
• Medical checkup :polygraphy and Respiratory Functional Exploration (RFE)

You may not qualify if:

• Impossible to obtain a consent or age less than 18 years
• Heart / Kidney Failure
• Absence of affiliation to a Social Security scheme
• History of rhinological surgery
• Pregnancy, Breastfeeding
• Subject presenting a congenital or acquired obstructive nasal obstructive physical obstacle (obstructive deviation, craniofacial malformation)

Sponsors & Collaborators

• Assistance Publique - Hôpitaux de Paris: lead

Study Sites (1)

Henri Mondor Hospital

Créteil, 94010, France

RECRUITING

MeSH Terms

Conditions

Obesity; Sleep Apnea, Obstructive

Condition Hierarchy (Ancestors)

Overweight; Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Sleep Apnea Syndromes; Apnea; Respiration Disorders; Respiratory Tract Diseases; Sleep Disorders, Intrinsic; Dyssomnias; Sleep Wake Disorders; Nervous System Diseases

Study Officials

• Emilie BEQUIGNON

  Assistance Publique - Hôpitaux de Paris

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Emilie BEQUIGNON, PH

CONTACT

(0)1 49 81 24 91; emilie.bequignon@gmail.com

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 28, 2017
• First Posted: December 4, 2017
• Study Start: March 2, 2016
• Primary Completion: March 2, 2018
• Study Completion: March 2, 2020
• Last Updated: December 4, 2017

Record last verified: 2017-11

Locations

FR (1)