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The Effect of Obstructive Sleep Apnea on Medical Outcomes After Gastric Bypass Surgery

Not Recruiting

Trial ID: NCT00671983


Obstructive sleep apnea (OSA) is a syndrome characterized by repetitive episodes of airway obstruction during sleep, which result in low oxygen level in the blood and bad sleep quality. Both of these effects are implicated in medical, neurological and cognitive disorders in subjects with OSA. The purpose of this study is to examine how OSA affects medical and neurobehavioral outcomes after gastric bypass surgery for weight loss in morbidly obese patients.

Official Title

The Effect of Obstructive Sleep Apnea on Medical and Neurobehavioral Outcomes After Gastric Bypass Surgery - An Exploratory Investigation

Stanford Investigator(s)

Anthony G. Doufas, M.D., Ph.D.
Anthony G. Doufas, M.D., Ph.D.

Professor of Anesthesiology, Perioperative and Pain Medicine


Inclusion Criteria:

Scheduled for Laparoscopic roux-en-Y gastric bypass (RYGB) surgery Presence or absence of
OSA confirmed by polysomnography Comprehension of spoken and written English

Exclusion Criteria:

Major psychiatric, neurological, or neuromuscular disorder History of untreated thyroid
disease Known diabetes mellitus History of stroke with or without apparent neurological
deficits Alcohol consumption which exceeds 2 drinks per day or drug abuse. Undergone a
sleep study in the past


procedure: Neurocognitive Testing

Not Recruiting

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305