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Results 401 - 450 of 2549
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Dvonch J Timothy JT Department of Environmental Health Sciences, University of Michigan, 109 South Observatory, Ann Arbor, MI 48109-2029, USA. - - 2009
Recent studies have suggested a link between exposure to ambient particulate matter <2.5 microm in diameter (PM(2.5)) and adverse cardiovascular outcomes. The objective of this study was to examine the effects of differing community-level exposure to PM(2.5) on daily measures of blood pressure (BP) among an adult population. During the ...
Stergiou George S - - 2009
Studies using ambulatory blood pressure (BP) monitoring have shown that in children and adolescents masked hypertension (MH) is not uncommon. This school-based study investigated the prevalence and the characteristics of MH diagnosed using home BP measurements. A total of 765 subjects aged 6-18 years were assessed with office (two visits, ...
Brodie Fiona G - - 2009
Spontaneous fluctuations in BP (blood pressure) and subsequent change in CBFV (cerebral blood flow velocity) in the MCA (middle cerebral artery) can be used to assess dynamic cerebral autoregulation using transfer function analysis; however, the reliability of this technique has not been assessed, in particular the contribution of intra-subject variability ...
Gu Steven - - 2009
Understanding the mechanisms that underlie BP (blood pressure) variation in humans and animal models may provide important clues for reducing the burden of uncontrolled hypertension in industrialized societies. High BP is often associated with increased signalling via G-protein-coupled receptors. Three members of the RGS (regulator of G-protein signalling) superfamily RGS2, ...
Joe Soo Geun - - 2009
To investigate the relationship between blood pressure (BP) parameters in the habitual position and glaucomatous damage at initial presentation in patients with untreated normal tension glaucoma (NTG). Fifty-four eyes from 54 subjects diagnosed with NTG were consecutively enrolled. BP was measured with an automated ambulatory monitoring device in the habitual ...
Raffai G - - 2010
Sustained orthostasis elicits the elevation of arterial blood pressure (BP) via sympathetic activation in conscious Wistar rats for at least 2 hours. We tested the hypothesis whether vestibular apparatus plays a role in BP and heart rate (HR) control in response to prolonged gravitational stress. BP and HR responses to ...
Laugesen Esben - - 2009
Ambulatory arterial stiffness index (AASI) has been proposed as an indirect measure of arterial stiffness. The aims of this study were (i) to analyze AASI and pulse pressure (PP) in micro- and normoalbuminuric type 1 diabetes mellitus (T1DM) patients and healthy controls and (ii) to explore the relation between nocturnal ...
Asferg Camilla - - 2009
Low-grade chronic inflammation has been proposed to play a major role in the pathogenesis of hypertension. Low-grade chronic inflammation is also closely associated with obesity, an established causative factor in the development of hypertension. The purpose of this study was to investigate the relationship between two markers of inflammation, C-reactive ...
Stergiou George S - - 2009
This study compared the long-term reproducibility of home blood pressure (BP) in comparison with office BP in children and adolescents. Forty-eight subjects (27 boys, mean age 11.3+/-3.1 (s.d.) years) recruited from the Arsakeion school study because of elevated office and/or home BP were assessed with office (1 visit, mercury sphygmomanometer) ...
Moore William E - - 2009
There are few studies of the prevalence of elevated blood pressure (BP) that include American Indian school children. Therefore, the intent of this study was to examine the relationships between BP and risk factors in a multiracial, predominantly American Indian, school district. A total of 1,829 American Indian, white, Hispanic, ...
Safar Michel E - - 2009
Although the differences between central and peripheral BP (blood pressure) have been known for decades, the consequences of decision-making based on peripheral rather than central BP have only recently been recognized. The influence of cyclic stretch (owing to cyclic changes in BP) on the aortic wall in atherosclerosis has been ...
Eeftinck Schattenkerk Daan W - - 2009
The Finapres methodology offers continuous measurement of blood pressure (BP) in a noninvasive manner. The latest development using this methodology is the Nexfin monitor. The present study evaluated the accuracy of Nexfin noninvasive arterial pressure (NAP) compared with auscultatory BP measurements (Riva-Rocci/Korotkoff, RRK). In supine subjects NAP was compared to ...
Zanettini João Otavio - - 2010
BACKGROUND: Studies of the association between hypertensive response (HR) in the exercise treadmill testing (ETT) and end organ damage are mostly cross-sectional and have not used ABPM. We investigated the association of different definitions of HR with incidence of hypertension by ABPM and development of cardiac structural abnormalities. METHODS: Normotensive ...
Lee Donna H - - 2009
When blood pressure (BP) is elevated above baseline, a pressure natriuresis-diuresis response ensues, critical to volume and BP homeostasis. Distal convoluted tubule Na(+)-Cl(-) cotransporter (NCC) is regulated by trafficking between the apical plasma membrane (APM) and subapical cytoplasmic vesicles (SCV). We aimed to determine whether NCC trafficking contributes to pressure ...
Zou Ding - - 2009
OBJECTIVE AND BACKGROUND: Pulse wave amplitude (PWA) derived from the digital vascular bed has been used in sleep studies. The nocturnal attenuation of PWA has been shown to reflect sympathetic activation during sleep. We assessed the relationship between nocturnal PWA attenuation and office blood pressure (BP). METHODS: Eighty-one subjects (46 ...
Rodrigues Cláudia Soares - - 2009
OBJECTIVE: To evaluate the accuracy and quantify the agreement between office blood pressure (BP) and daytime ambulatory BP monitoring in the assessment of BP control of patients with a clinical diagnosis of resistant hypertension. STUDY DESIGN AND SETTING: Office BP measurements were done in a cohort of 228 true resistant ...
Hebert, Christopher J.
A Comparison of the Validity of Quality Indicators for Hypertension Abstract by Christopher J. Hebert, MD Background: The most commonly used quality measure for hypertension implies that measurement of quality is a question with a binary response. The Health Plan Employer Data and Information Set (HEDIS) measure indicating whether or ...
Hoffman Jay R - - 2009
The purpose of this study was to examine the acute effects of a weight loss supplement on resting oxygen uptake (VO2), respiratory quotient (RQ), caloric expenditure (kcal), heart rate (HR), and blood pressure (BP) in healthy and physically active individuals. Ten subjects (5 male, 5 female; 20.2 +/- 1.2 y; ...
Protogerou Athanassios D - - 2009
The blood pressure (BP) waveform varies substantially between the peripheral conduit (brachial) and the central elastic (aorta) arteries mainly do a gradual increase of systolic BP, as the wave propagates distally. This phenomenon is called BP amplification and is principally generated by the presence of arterial stiffness gradient and wave ...
Cornélissen G - - 2009
An increase in the circadian amplitude (A) of blood pressure (BP) had been reported to precede a rise in the circadian BP average (MESOR, M), as pre-hypertension in the stroke-prone Okamoto rat. In humans, children with a positive family history of high BP and/or related cardiovascular disease had, on average, ...
Agarwal Rajiv - - 2009
BACKGROUND: Reduced circadian variation in blood pressure (BP) has been associated with cardiovascular morbidity, mortality and accelerated progression of kidney disease, but its independent prognostic value remains unknown. METHODS: Using 2 definitions, one based on dipping and the other based on BP pattern (assessed by cosinor rhythmometry), we studied the ...
Pavek Karel - - 2009
The evidence of emotional impacts on day and night blood pressure (BP), heart rate (HR) and non-dipping of BP remains fragmentary. Personality traits previously tested by self-reports as determinants of office, screening or mean daytime BP produced mixed results. Therefore, we hypothesized that some traits are acting together as modifiers ...
Papaioannou Theodore G - - 2009
Hypertension is a major risk factor for a wide range of cardiovascular diseases and is typically identified by measuring blood pressure (BP) at the brachial artery. Although such a measurement may accurately determine diastolic BP, it does not accurately reflect systolic BP. This is mainly attributed to the fact that ...
Martins Lu??z Cl??udio - - 2009
This study was designed to evaluate the changes in arterial blood pressure (BP) and heart rate (HR) in moderate smokers during smoking abstinence after 7 days of treatment with bupropion alone, transdermal nicotine or bupropion combined with transdermal nicotine. Twenty-four healthy moderate smokers (12 female/12 male; 40+/-7 years) were evaluated ...
Laganovi? Mario - - 2009
Our aim was to analyze whether birth weight contributes to future hypertension through reduced kidney volume, and whether albuminuria could be a marker of this pathway. We included 103 patients with newly diagnosed essential hypertension and 92 normotensive controls. Blood pressure (BP) was measured using a mercury sphygmomanometer and a ...
Razay George - - 2009
BACKGROUND/AIMS: Studies on the relation between blood pressure (BP), dementia and Alzheimer's disease (AD) have yielded inconsistent results, showing an association with high or low BP, or no association with BP. The study was designed to look at the longitudinal effect of BP on cognitive function. METHODS: Participants were part ...
Cenci Maria Claudia Peixoto - - 2009
The purpose of this study was to evaluate the effects of 5 years of GH substitution on cardiac structure and function, physical work capacity and blood pressure levels in adults with GH deficiency (GHD). Fourteen patients were clinically assessed every 3 months for 5 years. Transthoracic echocardiography and exercise test ...
Agarwal Rajiv - - 2009
Home blood pressure (BP) monitoring serves as a practical method to detect changes in BP instead of ambulatory BP monitoring in hemodialysis patients. To evaluate the relationship of reduction in home BP compared to interdialytic ambulatory BP measurements we analyzed the data from the dry-weight reduction in hypertensive hemodialysis patients ...
Agyemang Charles - - 2009
High blood pressure (BP) is now an important public health problem in non-industrialised countries. The limited evidence suggests ethnic inequalities in BP in adults in some non-industrialised countries. However, it is unclear whether these ethnic inequalities in BP patterns in adults reflect on adolescents. Hence, we assessed ethnic differences in ...
Uen Sakir - - 2009
Wrist blood pressure (BP) devices have physiological limits with regards to accuracy, therefore they were not preferred for home BP monitoring. However some wrist devices have been successfully validated using established validation protocols. Therefore this study assessed the reproducibility of wrist home BP measurement with position sensor and automatic data ...
Gunstad John - - 2009
Past studies link elevated blood pressure (BP) and BP variability to adverse neurocognitive changes in community samples. However, little is known about the relationship between BP indices and cognitive function in older CVD patients. A total of 99 older adults with CVD completed a comprehensive neuropsychological test battery. Resting BP ...
Newhouse Stephen S Clinical Pharmacology and Barts and the London Genome Centre, William Harvey Research Institute, Barts and the London School of Medicine, Queen Mary University of London, London, United - - 2009
WNK1--a serine/threonine kinase involved in electrolyte homeostasis and blood pressure (BP) control--is an excellent candidate gene for essential hypertension (EH). We and others have previously reported association between WNK1 and BP variation. Using tag SNPs (tSNPs) that capture 100% of common WNK1 variation in HapMap, we aimed to replicate our ...
Gu W B WB Joint Research Center for Biomedical Engineering, Dept. of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong - - 2009
Nighttime blood pressure (BP) is found to best predict the 5-year risk of cardiovascular death in comparison to daytime BP, BP measured over a 24-hour period and clinical BP. In view of this, a novel contactless system has been developed on a sleeping bed for the cuffless and continuous estimation ...
Wong M M MM Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, Hong - - 2009
In this study, we have used impedance cardiography to determine blood pressure (BP) cufflessly and non-invasively. We have devised a new parameter, QdZ [the duration measured from the foot of electrocardiogram (ECG) Q wave to the peak of impedance cardiogram (ICG)], for this purpose. Twenty-two subjects performed four minutes of ...
Rydberg Erik - - 2010
The pathogenesis of hypertension in patients with primary hyperparathyroidism (PHPT) is unclear, and the prevailing opinion is that parathyroidectomy does not affect the blood pressure (BP). Most previous studies have been based on BP measurements at rest in a clinical setting. The aim of this study was to get additional ...
Soodabeh Navadeh Khodadadi; Educational ...
BACKGROUND: Nowadays, driving is an unseparated part of our new modern lifestyle; and we are exposed to this environment all the days for several hours whether as drivers or as riders. Many reports indicated that Iran is on the top rank of automobile-related morbidity and mortality among developed and even ...
Liang Yi - - 2009
PURPOSE: Studies suggest that reduced ocular perfusion pressure in the optic nerve head (ONH) increases the risk of glaucoma. This study tested a hypothesis that the magnitude of blood flow change in the ONH induced between two same intraocular pressure (IOP) alterations depends on the level of mean systemic blood ...
Amici A - - 2009
Cardiovascular events (CE) occur most frequently in the morning hours in hypertensive subjects. We studied the association between the morning blood pressure (BP) surge and CE in prognosis of 10 normotensive and 32 well-controlled hypertensive elderly, in whom ambulatory BP monitoring was performed and who were followed prospectively for 5 ...
Bonso Elisa - - 2008
To determine the accuracy of the UA-85X (UA-851, 852, 853, 854, and 855) device developed by the A&D company. Device evaluations were performed using the protocol of the European Society of Hypertension (ESH). Monitor performance was assessed in relation to patients' age, arm circumference, and systolic and diastolic blood pressures ...
Pickering Thomas G - - 2008
The traditional reliance on blood pressure (BP) measurement in the medical setting misses a significant number of individuals with masked hypertension, who have normal clinic BP but persistently high daytime BP when measured out of the office. We suggest that masked hypertension may be a precursor of clinically recognized sustained ...
Cuspidi Cesare - - 2008
AIM: We sought to investigate the relationship between body mass index (BMI) and parameters derived from 48-h ambulatory blood pressure monitoring (ABPM) as well as organ damage in human hypertension. METHODS: A total of 658 consecutive outpatients with grade 1 and 2 hypertension, never treated with antihypertensive medications underwent the ...
Linden Wolfgang - - 2008
BACKGROUND: In healthy individuals, blood pressure (BP) decreases, or "dips", during sleep. Ethnicity and high daytime blood pressure level are known markers of nondipping status. The literature on psychological markers of nondipping is scant but suggests that anger/hostility and chronic stress may be contributors to nondipping. PURPOSE: We have investigated ...
Fagard Robert H - - 2008
OBJECTIVE: To assess the prognostic significance of nighttime and daytime blood pressure (BP), their ratio and the nighttime dipping pattern for mortality and recurrent cardiovascular (CV) events in patients with CV disease at baseline. BACKGROUND: The prognostic value of ambulatory BP has not been reported in hypertensive patients with a ...
Myers Martin G - - 2008
OBJECTIVE: To determine the optimum interval between serial blood pressure measurements using an automated BpTRU sphygmomanometer. METHODS: Two groups of 200 patients each had automated office measurements taken using the BpTRU device at either 1-min or 2-min intervals from the start of one reading to the start of the next ...
Do─čru Mehmet Tolga - - 2008
OBJECTIVE: We aimed in this study to investigate the differences in left ventricular (LV) structure, function and elastance parameters in the patients with normotensive blood pressure (BP) levels. METHODS: A total of 294 normotensive patients (<140/90 mmHg) (135 males, mean age: 45+/-11 years; 159 females, mean age 38+/-10 years) were ...
Pogue Velvie - - 2009
Ambulatory blood pressure (ABP) monitoring provides unique information about day-night patterns of blood pressure (BP). The objectives of this article were to describe ABP patterns in African Americans with hypertensive kidney disease, to examine the joint distribution of clinic BP and ABP, and to determine associations of hypertensive target organ ...
Fedorova Olga V - - 2008
Levels of marinobufagenin (MBG), an endogenous bufadienolide Na/K-ATPase (NKA) inhibitor, increase in preeclampsia and in NaCl-sensitive hypertension. We tested a 3E9 monoclonal anti-MBG antibody (mAb) for the ability to lower blood pressure (BP) in NaCl-sensitive hypertension and to reverse the preeclampsia-induced inhibition of erythrocyte NKA. Measurements of MBG were performed ...
Okamoto Luis E LE Division of Clinical Pharmacology and Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, - - 2009
Blood pressure (BP) normally decreases during the night. Absence of this phenomenon (nondipping) is associated with increased cardiovascular risk. Altered autonomic and endocrine circadian rhythms are suspected to play a role. Patients with peripheral autonomic failure offer a unique opportunity to study this phenomenon, because approximately 50% develop supine hypertension ...
Bays H E - - 2009
Nicotinic acid (niacin) is a well-established treatment for dyslipidaemia - an important cardiovascular disease (CVD) risk factor. However, niacin may also reduce blood pressure (BP), which is another important CVD risk factor. This review examines the limited publicly available data on niacin's BP effects. Acute administration of immediate-release niacin may ...
Harbison J A - - 2009
BACKGROUND: Fatigue affects up to 68% of subjects following stroke. In non-stroke patients, associations are reported between chronic fatigue and both hypertension and hypotension. We hypothesized that, in patients with stroke or transient ischaemic attack (TIA), an association may exist between fatigue and abnormal blood pressure (BP) detected on ambulatory ...
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