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Central Pulse Pressure

Ibrahim M Salman, Cara M Hildreth, Jacqueline K Phillips
We investigated age- and sex-related changes in reflex renal sympathetic nerve activity (RSNA) and haemodynamic responses to vagal afferent stimulation in a rodent model of chronic kidney disease (CKD). Using anaesthetised juvenile (7-8weeks) and adult (12-13weeks) Lewis Polycystic Kidney (LPK) and Lewis control rats of either sex (n=63 total), reflex changes in RSNA, heart rate (HR) and mean arterial pressure (MAP) to vagal afferent stimulation (5-s train, 4.0V, 2.0-ms pulses, 1-16Hz) were measured. In all groups, stimulation of the vagal afferents below 16Hz produced frequency-dependent reductions in RSNA, HR and MAP, while a 16Hz stimulus produced an initial sympathoinhibition followed by sympathoexcitation...
October 11, 2016: Autonomic Neuroscience: Basic & Clinical
Leticia Gomez-Sanchez, Luis Garcia-Ortiz, M Carmen Patino-Alonso, Jose I Recio-Rodriguez, Rigo Fernando, Ruth Marti, Cristina Agudo-Conde, Emiliano Rodriguez-Sanchez, Jose A Maderuelo-Fernandez, Rafel Ramos, Manuel A Gomez-Marcos
BACKGROUND: The cardio-ankle vascular index (CAVI) and brachial-ankle pulse wave velocity (baPWV) can reflect both central and peripheral arterial stiffness. Metabolic syndrome (MetS) and its components may increase arterial stiffness and the risk of cardiovascular diseases. However, the correlation of MetS and its components with arterial stiffness is still not clear. The primary aim of this study is thus the relationship using baPWV and CAVI in Caucasian adults with intermediate cardiovascular risk...
October 24, 2016: Cardiovascular Diabetology
Kwame Yeboah, Daniel A Antwi, Ben Gyan
Background. Increased arterial stiffness is an independent cardiovascular risk factor in diabetes patients and general population. However, the contribution of diabetes to arterial stiffness is often masked by coexistent obesity and hypertension. In this study, we assessed arterial stiffness in nonhypertensive, nonobese type 2 diabetes (T2DM) patients in Ghana. Methods. In case-control design, 166 nonhypertensive, nonobese participants, comprising 96 T2DM patients and 70 nondiabetes controls, were recruited...
2016: International Journal of Endocrinology
Nir Uriel, Sirtaz Adatya, Jiří Malý, Eric Kruse, Daniel Rodgers, Gerald Heatley, Aleš Herman, Poornima Sood, Dominik Berliner, Johann Bauersachs, Axel Haverich, Michael Želízko, Jan D Schmitto, Ivan Netuka
BACKGROUND: The HeartMate 3 (HM3) is a Conformiteé Européenne (CE) mark-approved left ventricular assist device (LVAD) with a fully magnetically levitated rotor with features consisting of a wide range of operational speeds, wide flow paths and an artificial pulse. We performed a hemodynamic and echocardiographic evaluation of patients implanted with the HM3 LVAD to assess the speed range for optimal hemodynamic support. METHODS: Sixteen HM3 patients underwent pump speed ramp tests with right heart catheterization (including central venous pressure [CVP], pulmonary artery pressure, pulmonary capillary wedge pressure [PCWP] and blood pressure [BP]) and 3-dimensional echocardiography (3DE)...
July 17, 2016: Journal of Heart and Lung Transplantation
Toshihiro Shoji, Atsushi Nakagomi, Sho Okada, Yuji Ohno, Yoshio Kobayashi
BACKGROUND: Studies have established the prognostic value of central SBP and pulse pressure (PP). The SphygmoCor XCEL (AtCor Medical, Sydney, Australia) device provides practical central blood pressure (BP) measurement for daily clinical use with its easy-to-use, operator-independent procedure. However, this device has not been validated against invasive measurement. METHOD: Simultaneous oscillometric and high-fidelity invasive measurements of central SBP and PP were compared for 36 patients who underwent coronary arteriography...
October 19, 2016: Journal of Hypertension
Ana Rosa Cunha, Jenifer D'El-Rei, Fernanda Medeiros, Bianca Umbelino, Wille Oigman, Rhian M Touyz, Mario F Neves
BACKGROUND: Epidemiological studies demonstrate an inverse association between serum magnesium and incidence of cardiovascular disease. Diuretics commonly cause hypomagneseamia. METHOD: We evaluated effects of magnesium supplementation on blood pressure (BP) and vascular function in thiazide-treated hypertensive women in a randomized, double-blind, clinical trial. Hypertensive women (40-65 years) on hydrochlorothiazide and mean 24-h BP at least 130/80 mmHg were divided into placebo and supplementation (magnesium chelate 600 mg/day) groups...
October 18, 2016: Journal of Hypertension
Elena Bartoloni, Giacomo Pucci, Francesca Cannarile, Francesca Battista, Alessia Alunno, Marco Giuliani, Giacomo Cafaro, Roberto Gerli, Giuseppe Schillaci
Although microvascular disease is a hallmark of systemic sclerosis (SSc), a higher prevalence of macrovascular disease and a poorer related prognosis have been reported in SSc than in the general population. The simultaneous assessment of prognostically relevant functional properties of larger and smaller arteries, and their effects on central hemodynamics, has never been performed in SSc using the state-of-the-art techniques. Thirty-four women with SSc (aged 61±15 years, disease duration 17±12 years, and blood pressure 123/70±18/11 mm Hg) and 34 healthy women individually matched by age and mean arterial pressure underwent the determination of carotid-femoral (aortic) and carotid-radial (upper limb) pulse wave velocity (a direct measure of arterial stiffness), aortic augmentation (a measure of the contribution of reflected wave to central pulse pressure), and aortobrachial pulse pressure amplification (brachial/aortic pulse pressure) through applanation tonometry (SphygmoCor)...
October 17, 2016: Hypertension
Junichiro Hashimoto
Arterial structure and function change progressively with advancing age. Owing to long-lasting repetitive stretch with intermittent cardiac contraction, elastic fibers in the tunica media of large arteries gradually degenerate and are replaced by collagenous fibers. Such medial degeneration causes elastic arteries to stiffen and dilate. However, the speed of the vascular aging varies considerably among individuals; a discrepancy often exists between the chronological age of an individual and the biological age of his or her arteries...
September 2016: Journal of Hypertension
Trefor Morgan
Central Systolic Blood Pressure is lower than brachial artery blood Pressure due to reflected waves and greater augmentation at the periphery. The relationship is not consistent during life and alters with aging of the blood vessels. Increasing stiffness means that a greater component of the reflected waves returns to the central aorta during systolic contraction causing more amplification and a higher systolic blood pressure. Diastolic blood pressure on the other hand is always higher in the aorta than at the periphery allowing blood flow...
September 2016: Journal of Hypertension
Darae Kim, Chi Young Shim, Geu-Ru Hong, In Jeong Cho, Hyuk-Jae Chang, Jong-Won Ha, Namsik Chung
OBJECTIVE: The aim of this study was to comprehensively assess mechanical adaptation of LV in subclinical patients with hypertension(HTN) using a layer specific speckle-tracking echocardiography. DESIGN AND METHOD: Conventional transthoracic echocardiography (TTE) with 2D-layer specific speckle-tracking echocardiography was performed on 218 HTN patients with preserved LV ejection fraction (EF > 50%). Endocardial, epicardial, and transmural global longitudinal strain (GLS), global circumferential strains (GCS), and peak LV torsion were measured...
September 2016: Journal of Hypertension
Lama Ghazi, Tanja Dudenbostel, Deborah Ejem, Anne Turner-Henson, Cynthia Irwin Joiner, Olivia Affuso, Andres Azuero, David A Calhoun, Marti Rice, Fadi Hage, Suzanne Oparil
OBJECTIVE: To assess the feasibility of measuring non-invasively central aortic blood pressure (BP) and indices of arterial stiffness (aortic augmentation index (AIx) and pulse wave velocity (PWV)) in 3-5 year old children and assess if vascular function is affected by vascular inflammation (Serum C-reactive protein (CRP)) and /or cortisol. DESIGN AND METHOD: Central BP, AIx, and PWV were measured using applanation tonometry (SphygmoCor) in 16 children recruited from Head Start centers in AL...
September 2016: Journal of Hypertension
Yu Ma, Cheng-Chao Ruan, Yu Zhang, Qian Ge, Qi-Hong Wu, Ling-Ran Kong, Ping-Jin Gao
OBJECTIVE: Women with preeclampsia (PE) display excessive activation of complement system. However, little is known about the detailed cellular and molecular mechanism of complement activation in the development of PE. Here, we hypothesized that whether complement C5a contributes to the onset of PE through its effect on trophoblasts. DESIGN AND METHOD: In this study, 23 women with established PE and 32 normotensive women were recruited. At entry, peripheral and central blood pressure and pulse wave velocity (PWV) were performed...
September 2016: Journal of Hypertension
Chen Chi, Yi Zhang, Kai Wang, Le Wang, Bin Bai, Shikai Yu, Yuyan Lu, Jianhui Zhuang
OBJECTIVE: Central blood pressure (BP) is reported to associate with target organ damages (TODs) better than brachial BP. However, data regarding the association of TODs with central and brachial BP in the community-dwelling health elderly are scare. We therefore hypothesized that TODs are better associated with central than brachial blood pressure (BP) in the elderly community-based population, with considering all hypertensive TODs, namely left ventricular hypertrophy (LVH), left ventricular (LV) diastolic dysfunction (DD), carotid plaque, arteriosclerosis and microalbuminuria...
September 2016: Journal of Hypertension
Yi-Bang Cheng, Ting-Yan Xu, Yan Yang, Qian-Hui Guo, Chang-Sheng Sheng, Qi-Fang Huang, Jing-Jing Li, Dong-Yan Zhang, Ji-Guang Wang, Yan Li
OBJECTIVE: Central blood pressure (BP) is suggested to be more closely correlated to target organ damage and cardiovascular events than brachial BP. Outcome-based thresholds for the diagnosis of central hypertension has been recently proposed. However, little is known about central hypertension. In an untreated patient cohort, we therefore investigated the prevalence of central hypertension and its association with target organ damage. DESIGN AND METHOD: Consecutive untreated patients referred for ambulatory BP monitoring to our Hypertension Clinic were recruited...
September 2016: Journal of Hypertension
Francesca Saladini, Elisabetta Benetti, Claudio Fania, Lucio Mos, Raffaella Garbelotto, Andrea Mazzer, Edoardo Casiglia, Paolo Palatini
OBJECTIVE: High serum uric acid (SUA) is often associated with the metabolic syndrome and is a risk factor for cardiovascular disease. Whether high SUA is associated with arterial stiffness in the early stage of hypertension is not well known. DESIGN AND METHOD: We addressed this issue in 340 non-diabetic subjects from the HARVEST study (73% males) with a mean age of 31 ± 8 years and a mean blood pressure (BP) of 145 ± 11/92 ± 6 mmHg. Patients were divided into SUA tertiles (T1: 1...
September 2016: Journal of Hypertension
Do Young Kim, Suk-Won Choi, Seong Woo Han, Jong-Chan Youn, Kyu-Hyung Ryu
OBJECTIVE: Neutrophil to lymphocyte ratio (NLR) is a marker of systemic inflammation and predictive of cardiovascular risk. We aimed to determine the relationship between NLR and blood pressure (BP) parameters. DESIGN AND METHOD: We reviewed data of 670 hypertensive subjects without cardiovascular diseases from the Korean registry of target organ damages in hypertension (KorHR) which were available from March 2013 to February 2016. Among these patients, 202 subjects (aged 45...
September 2016: Journal of Hypertension
Bin Bai, Jin Xiong, Yuyan Lv, Shikai Yu, Jiadela Teliewubai, Chen Chi, Yiwu Zhou, Kai Wang, Le Wang, Yi Zhang, Yawei Xu
OBJECTIVE: To investigate the discrepancy between PWV and PPA in association with hypertensive TODs in the elderly population. DESIGN AND METHOD: From June 2014 to August 2015, a total of 1599 community-based elderly subjects (age > 65 years old) located in the northern Shanghai were recruited. The carotid-femoral pulse wave velocity (cfPWV), peripheral blood pressure (BP), central BP and other TODs indicators including the ratio of the early ventricular filling velocity (E) to the peak velocity of tissue Doppler velocity of septal mitral annulus (E/Ea), left ventricular mass index (LVMI), carotid intima-medium thickness (IMT), estimated glomerular filtration rate (eGFR), urinary albumin-creatinine rate (ACR) were assessed on each participant...
September 2016: Journal of Hypertension
Sang-Chol Lee
Chronic hypertension can result in deleterious effects on various vascular organs including the heart and vessels. Cardiovascular magnetic resonance (CMR) has the unique advantage of the ability to assess ventricular volumes and function, valvular abnormalities, vascular pathology, myocardial perfusion and tissue characterization with high accuracy and reproducibility and also avoid the risk of radiation. As this is the case, CMR seems to be an ideal method for comprehensive assessment of patients with systemic hypertension...
September 2016: Journal of Hypertension
Chen-Huan Chen
Aging causes progressive changes in the structure and function of the large arteries that adversely impact the heart and vital organs. Vascular aging is a major independent risk factor for the development of cardiovascular diseases and events. Arterial stiffening is the dominant hemodynamic manifestation of vascular aging and a major independent predictor for incident hypertension. Arterial stiffening is therefore responsible for the very high residual lifetime risk for hypertension for middle-aged and elderly individuals...
September 2016: Journal of Hypertension
José Mesquita Bastos
No abstract text is available yet for this article.
October 13, 2016: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
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