Relation between Carotid Intima-Media Thickness and diastolic augmentation index in Chinese population

2016 ◽  
Author(s):  
Qingyuan Wu ◽  
Jun Ye ◽  
Jian Yang ◽  
Zuchang Ma ◽  
Yining Sun ◽  
...  
Keyword(s):  
Chinese Population ◽  
Augmentation Index ◽  
Intima Media Thickness ◽  
Carotid Intima Media Thickness ◽  
Media Thickness ◽  
Diastolic Augmentation

scholarly journals Relationship of arterial wall parameters to cardiovascular risk factors and cardiovascular risk assessed by SCORE system

Medicina ◽  
2007 ◽  
Vol 43 (7) ◽  
pp. 529 ◽  
Author(s):  
Milda Kovaitė ◽  
Žaneta Petrulionienė ◽  
Ligita Ryliškytė ◽  
Jolita Badarienė ◽  
Alma Čypienė ◽  
...  
Keyword(s):  
Cardiovascular Risk ◽  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Arterial Wall ◽  
Pulse Wave ◽  
Augmentation Index ◽  
Intima Media Thickness ◽  
Carotid Intima Media Thickness ◽  
Media Thickness ◽  
Flow Mediated Dilatation

Objective. To investigate the relationship of arterial wall parameters (flow-mediated dilatation of the brachial artery, augmentation index, pulse wave velocity, stiffness index, carotid intima-media thickness) to conventional cardiovascular risk factors and cardiovascular risk assessed by SCORE system. Material and methods. A total of 209 subjects aged 40–65 years without clinically overt cardiovascular disease were examined. Parameters of arterial stiffness were obtained by two methods: augmentation index and carotid-radial pulse wave velocity by applanation tonometry and stiffness index by the means of finger photoplethysmography. Flow-mediated dilatation of the brachial artery, reflecting endothelial function, and carotid intima-media thickness was determined using a high-resolution B-mode ultrasonography. Results. Age and the presence of diabetes strongly influenced all parameters of the arterial wall (diabetes was not independent predictor when evaluating augmentation index). Mean arterial pressure and gender were independent predictors for arterial stiffness parameters – carotid-radial pulse wave velocity and augmentation index. Flow-mediated dilatation was strongly dependent on the diameter of the brachial artery, age, and body mass index. Using logistic regression, it was found that pulse wave velocity (P=0.014), intima-media thickness (P=0.004), and flow-mediated dilatation (P=0.020) were important parameters dividing subjects to the groups of increased (³5%) and low (<5%) cardiovascular risk assessed by SCORE system. The cutoff values for intima-media thickness and pulse wave velocity were 0.078 cm and 8.95 m/s, respectively. Conclusions. Arterial wall parameters are closely associated with conventional risk factors; they are influenced by age and the presence of diabetes. Arterial stiffness parameters are also influenced by mean arterial pressure; high-density lipoprotein cholesterol has influence on carotid intima-media thickness. Cutoff values for carotid intima-media thickness and carotid-radial pulse wave velocity could help to discriminate patients with increased cardiovascular risk.

Non-invasive measurements of arterial structure and function: repeatability, interrelationships and trial sample size

1998 ◽  
Vol 95 (6) ◽  
pp. 669-679 ◽  
Author(s):  
Yu-Lu LIANG ◽  
Helena TEEDE ◽  
Dimitra KOTSOPOULOS ◽  
Louise SHIEL ◽  
James D. CAMERON ◽  
...  
Keyword(s):  
Sample Size ◽  
Augmentation Index ◽  
Arterial Compliance ◽  
Intima Media Thickness ◽  
Carotid Intima Media Thickness ◽  
Flow Mediated Dilation ◽  
Experimental Conditions ◽  
Risk Factor Modification ◽  
Media Thickness ◽  
Systemic Artery

1. Repeatability of measurements of arterial compliance and flow-mediated dilation of the brachial artery has been infrequently reported, despite increasing use in interventional and risk-factor modification studies. Furthermore, little is known about the interrelationships of the various indices. The purposes of this study were to determine the repeatability and interrelationships of a range of arterial indices. 2. Fifty healthy volunteers, 20 men and 30 women, aged 20–70 (mean 46.5) years, were studied on two occasions, using an identical protocol, at a mean interval of 2.5 weeks. Tonometry, ultrasound and Doppler technique were used to measure the following: carotid wall intima-media thickness (IMT), total systemic artery compliance (SAC), arterial pulse wave velocity [PWV aorto-femoral (A-F), and femoral-dorsalis pedis (F-D)], carotid distensibility coefficient (DC) and carotid augmentation index (AI). Brachial flow-mediated dilation was measured in 30 subjects with analysis of diameter change for 4 min post ischaemia. 3. There were no systematic differences over the observed range of measurements for any of the reported parameters. Coefficients of variation were as follows: IMT 2.8%, SAC 9.2%, PWV(A-F) 3.2%, PWV(F-D) 5.0%, DC 10.0%, AI 1.3%. Brachial flow-mediated dilation curves were not different between visits; changes were maximum 60-s post ischaemia. All indices of arterial compliance were significantly correlated with age. The three different indices of central arterial compliance [SAC, PWV(A-F) and AI] were significantly correlated with carotid intima-media thickness. 4. Under controlled experimental conditions there was good repeatability of measurements of indices between sessions of both intrinsic and functional arterial mechanical properties (central and carotid arterial compliance, intima-media thickness and brachial flow-mediated dilation). Sample size tables for clinical trials using these indices are presented.

Sign in / Sign up

Export Citation Format

Share Document