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Effect of CPAP on diastolic function in coronary artery disease patients with nonsleepy obstructive sleep apnea: A randomized controlled trial.
Skaraborg Hospital, Lidköping.
Sahlgrenska Academy, University of Gothenburg.
Sahlgrenska Academy, University of Gothenburg.
Sahlgrenska Academy, University of Gothenburg.
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2017 (Engelska)Ingår i: International Journal of Cardiology, ISSN 0167-5273, E-ISSN 1874-1754, Vol. 241, s. 12-18, artikel-id S0167-5273(16)34469-2Artikel i tidskrift (Refereegranskat) Published
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Abstract [en]

BACKGROUND: Obstructive sleep apnea (OSA) has been associated with worse diastolic function in patients with coronary artery disease (CAD). This analysis determined whether continuous positive airway pressure (CPAP) treatment would improve diastolic function in CAD patients with nonsleepy OSA.

METHODS: Between December 2005 and November 2010, 244 revascularized CAD patients with nonsleepy OSA (apnea-hypopnea index (AHI) ≥15/h, Epworth Sleepiness Scale [ESS] score<10) were randomly assigned to CPAP or no-CPAP. Echocardiographic measurements were obtained at baseline, and after 3 and 12months.

RESULTS: A total of 171 patients with preserved left ventricular ejection fraction (≥50%), no atrial fibrillation or severe valve abnormalities, and technically adequate echocardiograms at baseline and follow-up visits were included (CPAP, n=87; no-CPAP, n=84). In the intention-to-treat analysis, CPAP had no significant effect on echocardiographic parameters of mild (enlarged left atrium or decreased diastolic relaxation velocity) or worse (increased E/é filling index [presumed elevated left ventricular filling pressure]) diastolic function. Post-hoc analysis revealed a significant association between CPAP usage for ≥4h/night and an increase in diastolic relaxation velocity at 12months' follow-up (odds ratio 2.3, 95% confidence interval 1.0-4.9; p=0.039) after adjustment for age, sex, body mass index, and left atrium diameter at baseline.

CONCLUSIONS: CPAP did not improve diastolic dysfunction in CAD patients with nonsleepy OSA. However, good CPAP adherence was significantly associated with an increase in diastolic relaxation velocity after one year.

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2017. Vol. 241, s. 12-18, artikel-id S0167-5273(16)34469-2
Nyckelord [en]
Continuous positive airway pressure, Coronary artery disease, Diastolic function, Echocardiography, Doppler, Obstructive sleep apnea
Nationell ämneskategori
Klinisk medicin
Forskningsämne
Människan i vården
Identifikatorer
URN: urn:nbn:se:hb:diva-13340DOI: 10.1016/j.ijcard.2017.03.100ISI: 000405455200003PubMedID: 28408103Scopus ID: 2-s2.0-85017335985OAI: oai:DiVA.org:hb-13340DiVA, id: diva2:1170706
Tillgänglig från: 2018-01-04 Skapad: 2018-01-04 Senast uppdaterad: 2018-01-04Bibliografiskt granskad

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