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JOURNAL ARTICLE
[Prospective cohort study on the impact of moderate/severe obstructive sleep apnea on the prognosis of patients with acute myocardial infarction].
Zhonghua Xin Xue Guan Bing za Zhi 2018 August 25
Objective: To investigate the impact of moderate/severe obstructive sleep apnea (OSA) on the prognosis of acute myocardial infarction. Methods: We prospectively selected patients with acute myocardial infarction (AMI) who were hospitalized at the Emergency Critical Care Center of Beijing Anzhen Hospital from June 2015 to May 2017. Patients who met the inclusion criteria were examined with portable sleep respiration monitoring. Patients were divided into moderate/severe OSA group (apnea-hypopnea index (AHI)≥15 beats/hour) and no/mild OSA group (AHI<15 beats/hour) according to sleep AHI. The incidence of major adverse cerebrovascular events (MACCE) after discharge was compared between the two groups, and the independent risk factors of MACCE were analyzed. Results: A total of 432 patients were enrolled in this study, including 211 moderate/severe OSA patients (48.8%). Compared with no/mild OSA group,patients with moderate/severe OSA had higher body mass index ((27.17±3.22) kg/m(2) vs. (25.55±3.44) kg/m(2), t= -5.033, P< 0.001), higher proportion of history of percutaneous coronary intervention (PCI) (18.5%(39/211) vs. 8.6%(19/221), χ(2)=9.076, P= 0.003), and higher proportion of 3-vessel disease (31.3%(66/211) vs. 24.9%(55/221), χ(2)=10.196, P= 0.017). The median follow-up time was 1.0 (0.7, 1.7) years. The incidence of MACCE in the moderate/severe OSA and no/mild group was 19.9%(42/211) and 11.3%(25/221), respectively. Kaplan-Meier analysis showed a higher cumulative risk of MACCE in patients with moderate/severe OSA (log-rank test,χ(2)=5.467, P= 0.019). Multivariate Cox regression analysis showed that moderate/severe OSA ( HR =1.915, 95 %CI 1.016-3.611, P= 0.045) and diabetes mellitus ( HR =1.819, 95 %CI 1.022-3.238, P= 0.042) were independent risk factors for MACCE at 1 year post discharge in patients with AMI. Conclusions: Nearly half of AMI patients are complicated with moderate/severe OSA in this patient cohort. Coronary artery disease is more severe in AMI patients complicating with moderate/severe OSA. Moderate/severe OSA is an independent risk factor for MACCE at 1 year after discharge in patients with AMI. Whether the prognosis of AMI can be improved by intervention of OSA remains to be investigated. Trial Registration: Clinical Trial.gov, NCT03362385.
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