Obstructive Sleep Apnea Is Highly Prevalent and Correlates With Impaired Glycemic Control in Consecutive Patients With the Metabolic Syndrome
Luciano F. Drager MD, Eduardo L. Queiroz MD,
Heno F. Lopes MD, PhD, Pedro R. Genta MD,
Eduardo M. Krieger MD, PhD, Geraldo Lorenzi-Filho MD, PhD,
Eduardo L. Queiroz MD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorPedro R. Genta MD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorGeraldo Lorenzi-Filho MD, PhD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorLuciano F. Drager MD, Eduardo L. Queiroz MD,
Heno F. Lopes MD, PhD, Pedro R. Genta MD,
Eduardo M. Krieger MD, PhD, Geraldo Lorenzi-Filho MD, PhD,
Eduardo L. Queiroz MD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorPedro R. Genta MD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorGeraldo Lorenzi-Filho MD, PhD
Sleep Laboratory,Pulmonary Division–Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
Search for more papers by this authorGeraldo Lorenzi-Filho, MD, PhD, Sleep Laboratory, Pulmonary Division – Heart Institute (InCor), University of São Paulo Medical School, Av Dr Enéas Carvalho de Aguiar, 44, CEP 05403-904, São Paulo, BrazilE-mail: [email protected]
Abstract
Obstructive sleep apnea (OSA) and the metabolic syndrome (MS) are independently associated with increased cardiovascular risk. The objective of the present study was to determine the prevalence of OSA among consecutive patients with MS and to determine whether OSA is associated with impaired glycemic control. Fifty consecutive patients with a recent diagnosis of MS and no previous diagnosis of OSA underwent a polysomnography and anthropometric and laboratory measurements. The prevalence of OSA (apnea-hypopnea index ≥15 events per hour of sleep) was 68% and in the same range of all other individual components of MS. Moreover, OSA was associated with increased levels of glucose (P=.03) and glycosylated hemoglobin (P=.03) but not with body mass index (P=.30). Glycosylated hemoglobin was independently associated with glucose (P<.001) and apnea-hypopnea index (P=.03). The prevalence of OSA is in the same range as all the individual components of MS and is independently associated with impaired glycemic control.
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