Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/126887
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Type: Journal article
Title: Continuous positive airway pressure treatment, glycemia, and diabetes risk in obstructive sleep apnea and comorbid cardiovascular disease
Author: Loffler, K.A.
Heeley, E.
Freed, R.
Meng, R.
Bittencourt, L.R.
Gonzaga Carvalho, C.C.
Chen, R.
Hlavac, M.
Liu, Z.
Lorenzi-Filho, G.
Luo, Y.
McArdle, N.
Mukherjee, S.
Yap, H.S.
Zhang, X.
Palmer, L.J.
Anderson, C.S.
McEvoy, R.D.
Drager, L.F.
SAVE Substudy Investigators
Citation: Diabetes Care, 2020; 43(8):1-9
Publisher: American Diabetes Association
Issue Date: 2020
ISSN: 0149-5992
1935-5548
Statement of
Responsibility: 
Kelly A. Loffler, Emma Heeley, Ruth Freed, Rosie Meng ... Lyle J. Palmer ... R. Doug McEvoy ... et al. (on behalf of the SAVE Substudy Investigators)
Abstract: OBJECTIVE:Despite evidence of a relationship among obstructive sleep apnea (OSA), metabolic dysregulation, and diabetes, it is uncertain whether OSA treatment can improve metabolic parameters. We sought to determine effects of long-term continuous positive airway pressure (CPAP) treatment on glycemic control and diabetes risk in patients with cardiovascular disease (CVD) and OSA. RESEARCH DESIGN AND METHODS:Blood, medical history, and personal data were collected in a substudy of 888 participants in the Sleep Apnea Cardiovascular End Points (SAVE) trial in which patients with OSA and stable CVD were randomized to receive CPAP plus usual care, or usual care alone. Serum glucose and glycated hemoglobin A1c (HbA1c) were measured at baseline, 6 months, and 2 and 4 years and incident diabetes diagnoses recorded. RESULTS:Median follow-up was 4.3 years. In those with preexisting diabetes (n = 274), there was no significant difference between the CPAP and usual care groups in serum glucose, HbA1c, or antidiabetic medications during follow-up. There were also no significant between-group differences in participants with prediabetes (n = 452) or in new diagnoses of diabetes. Interaction testing suggested that women with diabetes did poorly in the usual care group, while their counterparts on CPAP therapy remained stable. CONCLUSIONS:Among patients with established CVD and OSA, we found no evidence that CPAP therapy over several years affects glycemic control in those with diabetes or prediabetes or diabetes risk over standard-of-care treatment. The potential differential effect according to sex deserves further investigation.
Keywords: SAVE Substudy Investigators
Rights: © 2020 by the American Diabetes Association. Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. More information is available at https://www.diabetesjournals .org/content/license.
DOI: 10.2337/dc19-2006
Grant ID: http://purl.org/au-research/grants/nhmrc/1060078
http://purl.org/au-research/grants/nhmrc/1006501
http://purl.org/au-research/grants/nhmrc/343020
Appears in Collections:Aurora harvest 4
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