Intermountain Sleep Disorders Center

Salt Lake City, UT, United States

Intermountain Sleep Disorders Center

Salt Lake City, UT, United States

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Adams T.D.,University of Utah | Adams T.D.,LDS Hospital | Davidson L.E.,University of Utah | Litwin S.E.,University of Utah | And 20 more authors.
JAMA - Journal of the American Medical Association | Year: 2012

Context: Extreme obesity is associated with health and cardiovascular disease risks. Although gastric bypass surgery induces rapid weight loss and ameliorates many of these risks in the short term, long-term outcomes are uncertain. Objective: To examine the association of Roux-en-Y gastric bypass (RYGB) surgery with weight loss, diabetes mellitus, and other health risks 6 years after surgery. Design, Setting, and Participants: A prospective Utah-based study conducted between July 2000 and June 2011 of 1156 severely obese (body mass index [BMI] ≥35) participants aged 18 to 72 years (82% women; mean BMI, 45.9; 95% CI, 31.2-60.6) who sought and received RYGB surgery (n=418), sought but did not have surgery (n=417; control group 1), or who were randomly selected from a population-based sample not seeking weight loss surgery (n=321; control group 2). Main Outcome Measures: Weight loss, diabetes, hypertension, dyslipidemia, and health-related quality of life were compared between participants having RYGB surgery and control participants using propensity score adjustment. Results: Six years after surgery, patients who received RYGB surgery (with 92.6% follow-up) lost 27.7% (95% CI, 26.6%-28.9%) of their initial body weight compared with 0.2% (95% CI, -1.1% to 1.4%) gain in control group 1 and 0% (95% CI, -1.2% to 1.2%) in control group 2. Weight loss maintenance was superior in patients who received RYGB surgery, with 94% (95% CI, 92%-96%) and 76% (95% CI, 72%-81%) of patients receiving RYGB surgery maintaining at least 20% weight loss 2 and 6 years after surgery, respectively. Diabetes remission rates 6 years after surgery were 62% (95% CI, 49%-75%) in the RYGB surgery group, 8% (95% CI, 0%-16%) in control group 1, and 6% (95% CI, 0%-13%) in control group 2, with remission odds ratios (ORs) of 16.5 (95% CI, 4.7-57.6; P<.001) vs control group 1 and 21.5 (95% CI, 5.4-85.6; P<.001) vs control group 2. The incidence of diabetes throughout the course of the study was reduced after RYGB surgery (2%; 95% CI, 0%-4%; vs 17%; 95% CI, 10%-24%; OR, 0.11; 95% CI, 0.04-0.34 compared with control group 1 and 15%; 95% CI, 9%-21%; OR, 0.21; 95% CI, 0.06-0.67 compared with control group 2; both P<.001). The numbers of participants with bariatric surgery-related hospitalizations were 33 (7.9%), 13 (3.9%), and 6 (2.0%) for the RYGB surgery group and 2 control groups, respectively. Conclusion Among severely obese patients, compared with nonsurgical control patients, the use of RYGB surgery was associated with higher rates of diabetes remission and lower risk of cardiovascular and other health outcomes over 6 years. ©2012 American Medical Association. All rights reserved.


Hammoud A.O.,University of Utah | Walker J.M.,Intermountain Sleep Disorders Center | Gibson M.,University of Utah | Cloward T.V.,Intermountain Sleep Disorders Center | And 6 more authors.
Obesity | Year: 2011

The effect of sleep apnea on the reproductive function of obese men is not entirely elucidated. The objective of this study was to define the effect of sleep apnea on the reproductive hormones and sexual function in obese men. This study included 89 severely obese men with BMI 35kg/m 2 considering gastric bypass surgery. Anthropometrics (weight, and BMI), reproductive hormones, and sleep studies were measured. The sexual quality of life was assessed using the Impact of Weight on Quality of Life-Lite questionnaire (IWQOL-Lite). The mean age of our patients was 46.9 11.0 years, the mean BMI was 47.8 8.7kg/m 2 and the mean weight was 337.7 62.4lb. After correction for age and BMI, means of free testosterone per severity group of sleep apnea were as follows: no or mild sleep apnea 74.4 3.8pg/ml, moderate sleep apnea 68.6 4.2pg/ml, and severe sleep apnea 60.2 2.92pg/ml, P = 0.014. All other parameters of sleep apnea including hypopnea index, percent time below a SpO 2 of 90%, and percent time below a SpO 2 of 80% were also negatively correlated with testosterone levels after correction for age and BMI. BMI and presence of coronary artery disease decreased the sexual quality of life. Sleep apnea was associated with reduced sexual quality of life. In summary, sleep apnea negatively affects testosterone levels independent of BMI. Severely obese men had decreased sexual quality of life. © 2011 The Obesity Society.

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