Cardiovascular outcome associations among cardiovascular magnetic resonance measures of arterial stiffness: the Dallas heart study

Journal of Cardiovascular Magnetic Resonance

Research

Kevin S King¹  Akshay Goel¹  Suhny Abbara¹  Christopher D Maroules¹  Ronald M Peshock²  Amit Khera³  Colby Ayers⁴ 

[1] Departments of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, 75390-8896, Dallas, TX, USA;Departments of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, 75390-8896, Dallas, TX, USA;Division of Cardiology, Internal Medicine, and Clinical Sciences, Dallas, TX, USA;Division of Cardiology, Internal Medicine, and Clinical Sciences, Dallas, TX, USA;Donald W. Reynolds Cardiovascular Clinical Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA;

关键词: Arterial stiffness;    Pulse wave velocity;    Aortic distensibility;    Total arterial compliance;    Cardiovascular magnetic resonance;   

DOI  :  10.1186/1532-429X-16-33

 received in 2014-01-06, accepted in 2014-05-02,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundCardiovascular magnetic resonance (CMR) has been validated for the noninvasive assessment of total arterial compliance and aortic stiffness, but their associations with cardiovascular outcomes is unknown. The purpose of this study was to evaluate associations of CMR measures of total arterial compliance and two CMR measures of aortic stiffness with respect to future cardiovascular events.MethodsThe study consisted of 2122 Dallas Heart Study participants without cardiovascular disease who underwent CMR at 1.5 Tesla. Aortic stiffness was measured by CMR-derived ascending aortic distensibility and aortic arch pulse wave velocity. Total arterial compliance was calculated by dividing left ventricular stroke volume by pulse pressure. Participants were monitored for cardiovascular death, non-fatal cardiac events, and non-fatal extra-cardiac vascular events over 7.8 ± 1.5 years. Cox proportional hazards regression was used to assess for associations between CMR measures and cardiovascular events.ResultsAge, systolic blood pressure, and resting heart rate were independently associated with changes in ascending aortic distensibility, arch pulse wave velocity, and total arterial compliance (all p < .0001). A total of 153 participants (6.9%) experienced a cardiovascular event. After adjusting for traditional risk factors, total arterial compliance was modestly associated with increased risk for composite events (HR 1.07 per 1SD, p = 0.03) while the association between ascending aortic distensibility and composite events trended towards significance (HR 1.18 per 1SD, p = 0.08). Total arterial compliance and aortic distensibility were independently associated with nonfatal cardiac events (HR 1.11 per 1SD, p = 0.001 and HR 1.45 per 1SD, p = 0.0005, respectively), but not with cardiovascular death or nonfatal extra-cardiac vascular events. Arch pulse wave velocity was independently associated with nonfatal extra-cardiac vascular events (HR 1.18 per 1SD, p = 0.04) but not with cardiovascular death or nonfatal cardiac events.ConclusionsIn a multiethnic population free of cardiovascular disease, CMR measures of arterial stiffness are associated with future cardiovascular events. Total arterial compliance and aortic distensibility may be stronger predictors of nonfatal cardiac events, while pulse wave velocity may be a stronger predictor of nonfatal extra-cardiac vascular events.

【 授权许可】

CC BY   
© Maroules et al.; licensee BioMed Central Ltd. 2014