Reference Values Of Pulse Wave Velocity Research Articles

A Population-Based Scoring System to Assess the Impact of Individual Risk Factors on Vascular Health.

Arterial stiffness is an indicator of vascular health, influenced by both pathological conditions and physiological determinants, noticeably age. Augmentation index (AI) and pulse wave velocity (PWV) are used among others to assess arterial stiffness. Several risk factors may contribute to pathologically increase arterial stiffness and produce early vascular aging. Our study aims to assess the impact of individual risk factors on vascular health, evaluating the distribution of PWV and AI values in a cohort of adult people without modifiable cardiovascular risk factors while analyzing their role in accelerating vascular ageing. We performed a secondary analysis of a Swiss population-based research project, which took place in 2017 and 2018. Of the 1202 participants originally enrolled, 1097 were included in the final sample. The population was divided into without (n=388) and with risk factors (n=709), based on the presence of the following: smoking, diabetes, previous cardiovascular disease (CVD), chronic kidney disease stage 3 or more, LDL cholesterol ≥ 4.11 or treatment with hypolipidemic drugs, hypertension or treatment with antihypertensive drugs, and metabolic syndrome. Tonometric and oscillometric devices were employed to assess PWV, and the 75th percentiles of PWV and AI in the population without risk factors were calculated to identify cut-offs for the logistic regression analysis. We developed nomograms by assigning a numerical score to each independent prognostic factor; the total score estimating the probability of PWVs and AIs being over the defined cut-offs. Patients with hypertension, diabetes, and obesity showed higher PWV values (p < 0.001). In the univariate logistic regression, factors predictive for higher PWV values were diabetes, CVDs, hypercholesterolemia, and hypertension, while CVDs, antihyperlipidemic treatment, hypertension, and increased BMI were predictive in the multivariate logistic regression. Smoking did not significantly influence arterial stiffness parameters. The present study provides reference values for PWV and AI in subjects without modifiable cardiovascular risk factors and, through nomograms, a risk score stratification to assess the impact of individual risk factors on vascular health.

Accuracy of Pulse Wave Velocity Predicting Cardiovascular and All-Cause Mortality. A Systematic Review and Meta-Analysis.

Increased arterial stiffness has been associated with an increased risk of developing cardiovascular diseases and all-cause mortality. Pulse wave velocity (PWV) is an innovative and affordable measurement of arterial stiffness which may be an accessible tool to estimate mortality risk; however, no meta-analysis has estimated its predictive performance for cardiovascular and all-cause mortality. Moreover, reference values for PWV have only been established by consensus for healthy populations. The aim of this review was to estimate PWV and especially carotid femoral PWV performance predicting cardiovascular and all-cause mortality as well as comparing the resulting cfPWV thresholds with already established values in order to increase its validity. Original studies measuring PWV thresholds and its association with cardiovascular and all-cause mortality were systematically searched. The DerSimonian and Laird method was used to compute pooled estimates of diagnostic odds ratio (dOR), and overall test performances were summarized in hierarchical summary receiver operating characteristic curves (HSROC). Six studies were included in the meta-analysis. The pooled dOR values for the predictive performance of cfPWV were 11.23 (95 % CI, 7.29–1.29) for cardiovascular mortality and 6.52 (95% CI, 4.03–10.55) for all-cause mortality. The area under the HSROC curve for cfPWV was 0.75 (95% CI, 0.69–0.81) for cardiovascular mortality and 0.78 (95% CI, 0.74–0.83) for all-cause mortality, where the closest cut-off point to the summary point was 10.7 and 11.5, respectively. This systematic review and meta-analysis demonstrates that cfPWV is a useful and accurate cardiovascular mortality predictor and that its previously estimated reference values for estimating risk may be used in high-risk populations.

Influence of age and body mass index on arterial stiffness and left ventricular hypertrophy in patients with arterial hypertension II stage.

За результатами чисельних досліджень було встановлено і запропоновано референтні нормативні значення для центрального артеріального тиску та його ампліфікації в пацієнтів з різним серцево- судинним ризиком. Проте можливість їх практичного застосування в пацієнтів різних вікових груп повністю не вивчена. Було обстежено 132 пацієнти з неускладненою есенціальною артеріальною гіпертензією, що не отримували антигіпертензивну терапію (23 жінки та 109 чоловіків), яких було розподілено на 3 групи залежно від віку (ВООЗ, 2012): I група включала 47 пацієнтів молодого віку, II група - 50 пацієнтів середнього віку та III група – 35 пацієнтів літнього віку. Вимірювання центрального систолічного артеріального тиску (цСАТ), ампліфікаційного САТ, швидкість розповсюдження пульсової хвилі (ШРПХ) проводили за допомогою артеріографа Tensioclinic (Tensiomed, Hungary). Ураження органів-мішеней включало гіпертрофію лівого шлуночка (ГЛШ), яку визначали за ехокардіографічним індексом маси міокарда лівого шлуночка, скоригованим до поверхні тіла ( г/м2) або зросту (ГЛШ2,7) і ШРПХ в аорті >10 м/с. Встановлено, що використання персоналізованого підходу при обстеженні хворих на артеріальну гіпертензію дозволяє підвищити ефективність діагностики зумовлених гіпертензією субклінічних уражень органів. Таким чином, для виявлення ураження судинної стінки у хворих молодого віку з артеріальною гіпертензією і надмірною масою тіла та ожирінням слід використовувати референтні значення ШРПХ і цСАТ відповідно до вікової норми. Саме в цій групі пацієнтів виявлено найбільш несприятливий вплив судинної жорсткості та індексу маси тіла (ІМТ) на формування гіпертрофії лівого шлуночка. Разом з тим в осіб похилого віку необхідно використовувати референтні значення цСАТ залежно від ступеня артеріальної гіпертензії.Based on the cumulative data of scientific research reference values for the central blood pressure and its amplification were proposed in patients with different cardiovascular risk factors. Still, the possibility of its practical implementation in patients of different age groups has not been fully studied. There were examined 132 untreated patients (23 females and 109 males) with uncomplicated essential hypertension, which were divided into 3 groups depending on age (WHO, 2012): I group included 47 patients of the young age, II group - 50 middle-aged patients and III group – 35 elderly patients. Measurements of central systolic blood pressure (cSBP), SBP amplification (SBP Amp), pulse wave velocity (PWV) were carried out by Arteriograph Tensioclinic (Tensiomed, Hungary). Target-organ damage included LVH which was determined by echocardiographic left ventricular mass index (LVMI), adjusted for body surface (g/m2) or height (LVMI2,7), aortic PWV>10 m/s. It was established that the use of a personalized approach in the examination of patients with arterial hypertension makes it possible to increase the efficiency of diagnosis of hypertensive-mediated subclinical organ damage. So in order to identify impairment of the vascular wall in patients of a young age with hypertension, with overweight and obesity, the reference values of PWV and cSBP in accordance with the age norm should be taken into account. It was particularly in this cohort of patients that the greatest adverse effect of vascular stiffness and body mass index (BMI) on the formation of left ventricular hypertrophy was revealed, while in elderly people it is necessary to use the reference values of cSBP, depending on the degree of hypertension.

Pulse wave velocity reference values in 3,160 adults referred to a hypertension clinic for 24-hour ambulatory blood pressure monitoring

ABSTRACTBackground: Carotid-femoral pulse wave velocity (PWV) is a direct measure of aortic stiffness used in the stratification of cardiovascular risk. Its clinical application in Latin America has been limited by the absence of reference values. The objective of this study was to establish PWV reference values among adults referred to a specialized cardiology center for 24-hour ambulatory blood pressure monitoring (ABPM) in Medellín, Colombia.Methods: A descriptive study of 3,160 records of adult (older than 18 years) patients without pharmacological treatment assessed for PWV using a Mobil-O-Graph® 24-hour PWA device (IEM, Stolberg, Germany) and 24-hour ABPM with hemodynamic parameters based on suspected hypertension or hypotension was conducted. Patient records were categorized by decade of age and sub-divided based on the following 24-hour ABPM categories: normal (< 130/80 mmHg), grade I hypertension (between 130–150/80–90 mmHg), and grade II hypertension (> 150/90 mmHg).Results: PWV increased with age (r = 0,894; p < 0,001) and blood pressure category (ρ = 0,081; p < 0,001); the age-related increase was more pronounced among the patients in the higher blood pressure categories. Measures of central tendency and dispersion regarding PWV are presented, and reference values are proposed from the 90th percentile based on the age and 24-hour ABPM categories.Conclusions: PWV is directly related to age and blood pressure and can be predicted using a simple equation that includes these two variables. To stratify the cardiovascular risk of patients and make clinical decisions, the 90th percentile based on the age and 24-hour ABPM categories is recommended as a cut-off.

Determinants of pulse wave velocity in healthy people and in the presence of cardiovascular risk factors: ‘establishing normal and reference values’

AimsCarotid–femoral pulse wave velocity (PWV), a direct measure of aortic stiffness, has become increasingly important for total cardiovascular (CV) risk estimation. Its application as a routine tool for clinical patient evaluation has been hampered by the absence of reference values. The aim of the present study is to establish reference and normal values for PWV based on a large European population.Methods and resultsWe gathered data from 16 867 subjects and patients from 13 different centres across eight European countries, in which PWV and basic clinical parameters were measured. Of these, 11 092 individuals were free from overt CV disease, non-diabetic and untreated by either anti-hypertensive or lipid-lowering drugs and constituted the reference value population, of which the subset with optimal/normal blood pressures (BPs) (n = 1455) is the normal value population. Prior to data pooling, PWV values were converted to a common standard using established conversion formulae. Subjects were categorized by age decade and further subdivided according to BP categories. Pulse wave velocity increased with age and BP category; the increase with age being more pronounced for higher BP categories and the increase with BP being more important for older subjects. The distribution of PWV with age and BP category is described and reference values for PWV are established. Normal values are proposed based on the PWV values observed in the non-hypertensive subpopulation who had no additional CV risk factors.ConclusionThe present study is the first to establish reference and normal values for PWV, combining a sizeable European population after standardizing results for different methods of PWV measurement.

Pulse wave velocity reference values in healthy adults aged 26–75 years

The stiffening of arteries is associated with various cardiovascular diseases. Arterial stiffening can be studied utilizing arterial pulse wave velocity (PWV), but the absence of reliable reference values for PWV has limited its use in clinical practice. The aim of this study was to establish a range of reference values for PWV. PWV was examined by measuring the time difference of systolic pulse waves in arteries from the aortic arch to the popliteal artery using whole-body impedance cardiography (ICG). The study population consisted of 799 individuals (age range 25-76 years), 283 of whom had no evidence of cardiovascular disease, and a low burden of risk factors was selected to represent an apparently healthy population. In healthy study population, PWV was higher in males (8 x 9 +/- 1 x 8 m s(-1)) than females (8 x 1 +/- 2 x 0 m s(-1), P<0 x 001). Young males had lower PWV values than old males. Correspondingly, young females also had lower PWV values than old females. PWV was clearly associated with age, and PWV was higher in young and middle-aged males than in females. There was no statistically significant difference between old males and females in PWV. In conclusion, whole-body ICG provides a practical method for PWV measurement. Reference values can be useful in the clinical management of patients, especially in detecting early vascular disease or an increased risk of cardiovascular complications.