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        A novel echocardiographic method for assessing arterial stiffness in obstructive sleep apnea syndrome

        Serkan Akdag,Aytac Akyol,Huseyin Altug Cakmak,Hulya Gunbatar,Muntecep Asker,Naci Babat,Aydin Rodi Tosu,Mehmet Yaman,Hasan Ali Gumrukcuoglu 대한심장학회 2015 Korean Circulation Journal Vol.45 No.6

        Background and Objectives: Obstructive sleep apnea syndrome (OSAS) is associated with increased arterial stiffness and cardiovascularcomplications. The objective of this study was to assess whether the color M-mode-derived propagation velocity of the descendingthoracic aorta (aortic velocity propagation, AVP) was an echocardiographic marker for arterial stiffness in OSAS. Subjects and Methods: : The study population included 116 patients with OSAS and 90 age and gender-matched control subjects. Thepatients with OSAS were categorized according to their apnea hypopnea index (AHI) as follows: mild to moderate degree (AHI 5-30) andsevere degree (AHI≥30). Aortofemoral pulse wave velocity (PWV), carotid intima-media thickness (CIMT), brachial artery flow-mediateddilatation (FMD), and AVP were measured to assess arterial stiffness. Results: AVP and FMD were significantly decreased in patients with OSAS compared to controls (p<0.001). PWV and CIMT were increasedin the OSAS group compared to controls (p<0.001). Moreover, AVP and FMD were significantly decreased in the severe OSAS groupcompared to the mild to moderate OSAS group (p<0.001). PWV and CIMT were significantly increased in the severe group compared tothe mild to moderate group (p<0.001). AVP was significantly positively correlated with FMD (r=0.564, p<0.001). However, it was found tobe significantly inversely related to PWV (r=-0.580, p<0.001) and CIMT (r=-0.251, p<0.001). Conclusion: The measurement of AVP is a novel and practical echocardiographic method, which may be used to identify arterial stiffnessin OSAS

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