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Sleep Diagnosis and Therapy

Sleep Diagnosis and Therapy

Official Publication of the American Sleep and Breathing Academy

Severity of Sleep Apnea Predicts Glycemic Health

May 25, 2012 by admin

ATS 2012: The severity of sleep disordered breathing and nocturnal hypoxemia independently predict both glycosylated hemoglobin (HbA1c) levels and type 2 diabetes mellitus(T2DM), according to a new study.

“Because people with obstructive sleep apnea syndrome (OSAS) are often overweight or obese it has been difficult to interpret earlier studies of the relationship between sleep disordered breathing and metabolic disorders,” said Brian Kent, MBBCh, research fellow at St. Vincent’s University Hospital in Dublin. “We found that obstructive sleep apnea syndrome (OSAS) severity and low nocturnal oxygen levels were significant independent predictors of prevalent T2DM and HbA1c levels, even after adjustment for a number of confounding variables, including obesity.”

The research will be presented at the ATS 2012 International Conference in San Francisco.

The study involved 7,886 prospectively assessed subjects from 22 sleep laboratories in 16 European countries. All subjects completed overnight sleep studies.

After adjustment for comorbidities and demographic and anthropometric variables, moderate and severe OSAS were each significant (P=.003) predictors of having a diagnosis of T2DM. Apnea/hypopnea index, oxyhemoglobin desaturation index, and mean oxygen saturation (SpO2) were significant (P<.0001) predictors of HbA1c levels.

“A diagnosis of T2DM is associated with a significantly increased risk of cardiovascular morbidity and death, and elevated HbA1c levels predict cardiovascular mortality in non-diabetic subjects,” said Dr. Kent. “OSAS has also been shown to be associated with adverse cardio-metabolic outcomes, although whether OSAS independently predicts these outcomes is not clear.”

“Our study shows that OSAS is independently associated with metabolic disturbances,” said Dr. Kent. “This is important because individuals with T2DM or elevated HbA1c levels are more likely to die of cardiovascular disease.”

“Further detailed studies are needed to understand the mechanism underlying this relationship in people with OSAS.”

Source: American Thoracic Society Conference San Francisco 2012

Filed Under: Articles, Blog

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SleepDT Sleep Diagnosis and Therapy is a clinical Journal for allied Sleep Professionals, Neurologists, Psychiatrists, Pulmonologists, Primary Care Physicians, and other medical specialists. We also advocate on behalf of patient care in the field of Sleep Medicine

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