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The Importance of Managing Obstructive Sleep Apnea during Secondary Prevention in Patients after Percutaneous Coronary Intervention Ichiro Matsumoto 1 , Ryo Kawakami 1 , Yuichi Miyake 1 , Mizuki Kurozumi 1 , Yuichiro Takagi 1 1KKR Takamatsu Hospital, Cardiovascular Center Keyword: 閉塞性睡眠時無呼吸(OSA) , 経皮的冠動脈インターベンション(PCI) , 冠動脈疾患二次予防 , obstructive sleep apnea(OSA) , percutaneous coronary intervention(PCI) , secondary prevention pp.513-519
Published Date 2011/5/15
DOI https://doi.org/10.11477/mf.1404101703
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 Background:Several epidemiological and clinical studies have demonstrated that obstructive sleep apnea(OSA)increases cardiovascular morbidity and mortality. The aim of this study was to determine whether OSA might affect long-term outcomes after percutaneous coronary intervention(PCI).

 Methods:464 patients, who had undergone successful PCI for acute coronary syndrome or stable angina, were classified into three groups on the basis of the apnea-hypopnea index(AHI)and the application of continuous positive airway pressure(CPAP)in those with AHI<15, AHI>15, and taking CPAP treatment. In the 3 groups, the incidences of major adverse cardiac events(MACE)were measured during the five years after PCI. MACE was defined as cardiac death, non-fatal myocardial infarction, new lesions and restenosis.

 Results:The median follow-up duration was 34 months. Kaplan-Meier analysis demonstrated that patients with AHI>15(n=171)had a higher incidence of MACE after PCI than patients with AHI<15(n=220). However, CPAP treatment(n=73)reduced incidences of MACE(Logrank test:P<0.001). In addition, Cox proportional hazards analysis indicated that AHI was an independent risk factor of MACE after PCI(OR=1.032, 95%CI=1.022-1.043, p<0.001), but age, body mass index, diabetes mellitus, smoking, and medication were not associated. Furthermore, the plasma concentration of C-reactive protein(CRP)had significantly decreased after CPAP.

 Conclusion:A high percentage of patients with coronary artery disease had OSA,and the OSA was an independent predictor of cardiovascular events after PCI. Also,CPAP is considered useful in the prevention of cardiovascular events. Therefore,we should pay attention to sleep apnea in patients with coronary artery disease.


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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