We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov Menu

The Influence of Bariatric Surgery on Patients With Obstructive Sleep Apnea (OSA) (OSA)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified April 2012 by Hillel Yaffe Medical Center.
Recruitment status was:  Not yet recruiting
ClinicalTrials.gov Identifier:
First Posted: April 9, 2012
Last Update Posted: April 9, 2012
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Hillel Yaffe Medical Center

Obesity is a very important risk-factor in obstructive sleep apnea (OSA) and other sleep breathing disorders in patients with extreme BMI.

Candidates for bariatric surgery have a high OSA prevalence, ranging from 60-83%. The characteristics of patients with sleep apnea that were evaluated for bariatric surgery and had a full overnight polysomnography (PSG) screening for OSA were described and it was found that a very high prevalence (77.2%) for OSA in all subjects evaluated, regardless of pre-operative risk for OSA. A post-bariatric surgery PSG was not a part of this study.

The investigators would like to demonstrate the impact of bariatric surgery on OSA as a function of time.

Overweight Obstructive Sleep Apnea

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: The Influence of Bariatric Surgery on Patients With Obstructive Sleep Apnea (OSA)

Resource links provided by NLM:

Further study details as provided by Hillel Yaffe Medical Center:

Primary Outcome Measures:
  • Improvement in RDI after bariatric surgery [ Time Frame: Six months ]
    Improvement will measured by polysonography

Estimated Enrollment: 60
Study Start Date: May 2012
Estimated Study Completion Date: December 2013
Estimated Primary Completion Date: July 2012 (Final data collection date for primary outcome measure)
Bariatric surgery patients
Candidates for bariatric surgery.


Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
both males and females

Inclusion Criteria:

  • All candidates for bariatric surgery over 18 yrs of age

Exclusion Criteria:

  • Patients that underwent any OSA surgery in the past
  • Patient had any bariatric surgery in the past
  • Patients with COPD
  • Patients with CHD
  • Patients who have / had cancer that received chemotherapy or radiotherapy
  Contacts and Locations
No Contacts or Locations Provided
  More Information

Responsible Party: Hillel Yaffe Medical Center
ClinicalTrials.gov Identifier: NCT01573676     History of Changes
Other Study ID Numbers: 0048-11-HYMC
First Submitted: April 5, 2012
First Posted: April 9, 2012
Last Update Posted: April 9, 2012
Last Verified: April 2012

Keywords provided by Hillel Yaffe Medical Center:
bariatric surgery
sleep apnea

Additional relevant MeSH terms:
Sleep Apnea Syndromes
Sleep Apnea, Obstructive
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases
Body Weight