Year: 2013
Type: article
Abstract: Resting heart rate is an easily measured, noninvasive vital sign that is associated with cardiovascular disease events. The pathophysiology of this association is not known. We investigated the relationship between resting heart rate and stiffness of the carotid (a peripheral artery) and the aorta (a central artery) in an asymptomatic multi-ethnic population. Resting heart rate was recorded at baseline in the Multi-Ethnic Study of Atherosclerosis (MESA). Distensibility was used as a measure of arterial elasticity, with a lower distensibility indicating an increase in arterial stiffness. Carotid distensibility was measured in 6484 participants (98% of participants) using B-mode ultrasound, and aortic distensibility was measured in 3512 participants (53% of participants) using cardiac MRI. Heart rate was divided into quintiles and we used progressively adjusted models that included terms for physical activity and atrioventricular nodal blocking agents. Mean resting heart rate of participants (mean age, 62 years; 47% men) was 63 bpm (SD, 9.6 bpm). In unadjusted and fully adjusted models, carotid distensibility and aortic distensibility decreased monotonically with increasing resting heart rate (P for trend <0.001 and 0.009, respectively). The relationship was stronger for carotid versus aortic distensibility. Similar results were seen using the resting heart rate taken at the time of MRI scanning. Our results suggest that a higher resting heart rate is associated with an increased arterial stiffness independent of atrioventricular nodal blocker use and physical activity level, with a stronger association for a peripheral (carotid) compared with a central (aorta) artery.
Source: Hypertension
Language: English
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
Awards: G1261793039, MESA, G1276754516, G1409423729, G1640378483, G2144938473, G22458031, MESA, Clinical and Translational Science Award, Institute for Clinical and Translational Research (UL1), MESA, G2837638605, G290884426, G291913881, SUBCLINICAL CARDIOVASCULAR DISEASE STUDY--EBCT READING, G3647016462, MESA, TITLE: MULTI-ETHNIC STUDY OF ATHEROSCLEROSIS (MESA), OPTION 3. 4/1/2014 - 3/31/2015. MULTI-ETHNIC STUDY OF ATHEROSCLEROSIS (MESA) - READING CENTER, NHLBI, MESA, SUBCLINICAL CARDIOVASCULAR DISEASE STUDY-ULTRASOUND, MESA, G66341962, G682208693, MESA, G78770644, Cardiovascular Epidemiology Institutional Training, G991334795
OpenAlex ID: W2125448187