Search Results
Results 701 - 750 of 2465
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Chin Kazuo - - 2006
OBJECTIVES: Effective treatment of obstructive sleep apnoea (OSA) with nasal continuous positive airway pressure (nCPAP) lowers blood pressure (BP). The long-term effects of nCPAP treatment on BP in OSA patients are not well known. The time period of such treatment sufficient to lower BP in OSA patients is also not ...
Grossman Ehud - - 2006
PURPOSE: Nocturnal hypertension is associated with a high risk of morbidity and mortality. A blunted nocturnal surge in melatonin excretion has been described in nondipping hypertensive patients. We therefore studied the potency of melatonin to reduce nighttime blood pressure (BP) in treated hypertensive patients with nocturnal hypertension. PATIENTS AND METHODS: ...
Fialho Guilherme - - 2006
BACKGROUND: Medical residency is marked by long work hours and shift work. The acute effects of these factors on the blood pressure (BP) of medical residents have not been adequately evaluated. METHODS: A total of 61 medical residents underwent to ambulatory blood pressure monitoring (ABPM) during a 24-h shift work ...
Pierdomenico Sante D - - 2006
BACKGROUND: The independent prognostic value of blood pressure (BP) variability in treated hypertension is not yet clear. We investigated the relationship between BP variability, evaluated by noninvasive monitoring, and cardiovascular outcome in treated hypertensive patients. METHODS: The occurrence of fatal and nonfatal cardiovascular events was evaluated in 1472 treated patients. ...
Zakopoulos Nikolaos A - - 2006
OBJECTIVES: Blood pressure (BP) changes are steeper in hypertensive than in normotensive individuals, whereas an increased rate of BP fluctuations is associated with medial hypertrophy of the carotid arteries. We evaluated the association between the rate of BP variation derived from ambulatory blood pressure monitoring (ABPM) data analysis and left ...
Shimizu Motohiro - - 2006
Home blood pressure (BP) monitoring has become popular and acceptable. The value of home BP monitoring has been recognized, because it has some potential advantages over office BP. Home BP monitoring is more accurate and reproducible, has a better prognostic value, and increases patients' compliance with treatment. Home BP monitoring ...
Franklin Stanley S - - 2006
BACKGROUND: Elevated blood pressure (BP) is one element of metabolic syndrome (MetS); however, the relation of various BP categories and hypertension subtypes to the likelihood of having MetS is not well defined. METHODS: We determined the odds of MetS, defined by the National Cholesterol Education Program, in various BP categories ...
Asayama Kei - - 2006
Predictive power of self-measured blood pressure at home (home BP) for cardiovascular disease risk has been reported to be higher than casual-screening BP. However, the differential prognostic significance of home BP in the morning (morning BP) and in the evening (evening BP), respectively, has not been elucidated. In the Ohasama ...
Mena-Martín Francisco J - - 2006
To analyze the influence of sympathetic activity on blood pressure (BP) and its effects on urinary albumin excretion (UAE), the authors carried out a cross-sectional study in their local health coverage area. The following variables were monitored in a representative sample of the general population made up of 495 individuals: ...
Marcheselli Simona - - 2006
BACKGROUND AND PURPOSE: Studies on the prognostic significance of blood pressure (BP) increases during the acute phase of ischemic stroke give contradictory results. The aim of this study was to evaluate BP response during the acute phase in different ischemic stroke subtypes, and to assess the prognostic value, considering long-term ...
Ishikawa Joji - - 2006
Morning blood pressure (BP) level may play an important role in the pathogenesis of cardiovascular events; however, morning BP detected by home BP monitoring may remain uncontrolled in medicated hypertensive patients even when clinic BP is well controlled (masked morning hypertension: MMHT). We studied the determinants of MMHT in stably ...
Alsuwaida Abdulkareem - - 2006
This study was undertaken to determine whether self-measured home blood pressure (BP) readings were comparable to clinic visit BP readings in hypertensive type II diabetic patients. We measured the BP of 27 hypertensive patients at home and during the clinic visits over a three week period. The BP readings were ...
Steptoe Andrew A Department of Epidemiology and Public Health, Institute of Child Health, University College London, London WC1E 6BT, UK. - - 2006
Delayed blood pressure (BP) recovery after psychological stress is associated with low socioeconomic status (SES) and prospectively with increases in clinic BP. We tested whether poststress BP recovery was related to carotid atherosclerosis. Psychophysiological stress testing was performed with a healthy subgroup of the Whitehall II epidemiological cohort, and recovery ...
Fucà Giuseppe - - 2006
AIMS: In patients with vasovagal syncope (VVS), a neural reflex appears the main determinant of hypotension leading to loss of consciousness; whether hypotension is mainly due to involvement of the arterial system or the venous system remains a debated issue. The aim of the present study was to assess which ...
van Bemmel Thomas - - 2006
High BP is associated with decline of renal function. Whether this is true for very old people largely is unknown. Therefore, this study assessed the effect of BP on creatinine clearance over time in very old participants. A total of 550 inhabitants (34% men) of Leiden, The Netherlands, were enrolled ...
Syme Amy N - - 2006
Blood pressure (BP) is immediately reduced after aerobic exercise (postexercise hypotension [PEH]). Whether peak systolic BP on a maximal graded exercise stress test (GEST) relates to PEH is not known. This study examined associations between peak systolic BP on a GEST and PEH. Subjects were 50 men (mean +/- SEM ...
Galetta F - - 2006
AIM: Regular exercise is a key component of cardiovascular risk prevention strategies, because it is associated with a variety of beneficial metabolic and vascular effects that reduce mortality and the incidence of cardiovascular adverse events. Endothelium plays an important role in the local regulation of vascular tone and structure, mainly ...
Finta Ervin - - 2006
OBJECTIVE: To study the effects of the centrally acting imidazoline-like compound rilmenidine on the circadian and short-term cardiovascular rhythms derived from continuous blood pressure (BP) recordings in patients with mild essential hypertension. METHODS: This was a single-center, open study. Recordings were obtained from eight subjects, using a Portapres during two ...
Dabrowska Elzbieta - - 2006
Circadian blood pressure (BP) rhythm is often disturbed in patients with secondary forms of hypertension. The aim of the present article was to investigate changes in circadian BP profile parameters using two-step statistical approach by Fourier analysis in relation to day and night urinary catecholamine excretion in 35 patients with ...
Mancia Giuseppe - - 2006
Compared with isolated clinic measurements, ambulatory blood pressure monitoring (ABPM) provides an insight into blood pressure (BP) changes in everyday life and an estimate of the overall BP load exerted on the cardiovascular system over 24 hours. Cross-sectional evidence suggests a direct and significant relationship between ambulatory BP and organ ...
Allison C - - 2006
The BpTRU(tm) is an automated device that takes serial blood pressure (BP) measurements in a physician's office. (1) Preliminary data from non-randomized, uncontrolled trials suggest that the average of five BpTRU measurements, taken while the patient is alone, more reliably reflects "resting" BP compared to manual measurements taken with a ...
Lurbe Empar - - 2006
OBJECTIVES: Obesity is an increasingly frequent problem among children and adolescents, and may lead to blood pressure (BP) increase. The aim of the present study was to assess the prevalence of hypertension, white-coat and masked hypertension in obese adolescents making systematic use of both office BP and 24-h ambulatory BP ...
Chuang Shao-Yuan - - 2006
BACKGROUND: General obesity and its progression are major predictors of future hypertension. It has not been established whether abdominal obesity contributes to the development of hypertension. METHODS: A community-based study population of 2377 normotensive nondiabetic Chinese adults aged >or=30 years were re-examined 10 years after their baseline examination. RESULTS: The ...
Lu Yanhui - - 2006
BACKGROUND: Exaggerated blood pressure (BP) response to behavioral stress has been recognized as an independent predictor of increased BP levels in human subjects. The coupling of dopamine receptor type 1 (DRD1) with stimulatory G-proteins plays an important role in BP regulation. Therefore, we investigated whether the A-48G polymorphism of the ...
Clark Rodney - - 2006
BACKGROUND: Research indicates that perceived racism and coping responses are associated with basal blood pressure (BP) levels and BP reactivity in Black adults. No study could be found, however, that has explored the independent and interactive effects of perceived racism and coping responses in a cohort who probably has the ...
Akgöz Haldun - - 2006
This study examined the relationship between nocturnal blood pressure (BP) dipping and chronotropic dose25 (CD25) as an indicator of beta-adrenergic receptor functioning in normotensive people. In addition, the authors evaluated the influence of beta-receptor functioning on heart rate recovery after exercise. The sample consisted of 41 participants (18 men, 23 ...
Niiranen Teemu J - - 2006
BACKGROUND: The purpose of this study was to assess the agreement, mean difference, and the detection and control rates of hypertension, between home and clinic blood pressure (BP) measurement in the Finnish population. Variation in home BP during the measurements was also examined. METHODS: We studied a representative sample of ...
Yiallourou Stephanie R - - 2006
Accuracy and precision of a noninvasive device for continuously measuring blood pressure (BP) (Finometer, FMS, The Netherlands) during sleep was assessed in preterm infants. Absolute BP beat-to-beat values, interbeat changes, measurement precision, and baroreflex sensitivity were compared with BP measurements from intraarterial catheters. Ten preterm infants (gestational age 27-36 weeks; ...
Milutinović Sanja - - 2006
Although it has been suggested that vasopressin (VP) acts within the central nervous system to modulate autonomic cardiovascular controls, the mechanisms involved are not understood. Using nonpeptide, selective V(1a), V(1b), and V(2) antagonists, in conscious rats, we assessed the roles of central VP receptors, under basal conditions, after the central ...
Ohuchi Hideo - - 2007
BACKGROUND: Supraventricular tachycardia (SVT) is becoming of great concern for patients long after the Fontan operation and arterial blood pressure (BP) decreases during SVT may be associated with their morbidity and mortality. METHODS: We investigated the BP during supraventricular pacing (SVP) to simulate SVT in these patients. We measured femoral ...
Aldo Ferrara L - - 2007
OBJECTIVE: As subjects with metabolic syndrome have an increased sympathetic activity regardless of the presence of arterial hypertension, this study aimed at evaluating in hypertensives whether this condition has repercussions on differences in resting, ambulatory and under sympathetic stimulation blood pressure levels. METHODS: Blood pressure (BP) was measured at rest ...
Thompson A M - - 2006
In the past 30 years or so, the introduction of 24-h ambulatory blood pressure monitoring (ABPM) has enabled a more comprehensive estimate of a patient's true blood pressure (BP) and its changes. Although this tool has been used in the general population for the diagnosis of white coat hypertension, its ...
Catz A - - 2007
Postprandial hypotension (PPH) appears in various conditions with autonomic failure and was symptomatic in a patient with thoracic paraplegia, but was not remarkable in patients with tetraplegia. To determine whether the pathology causing PPH may include a thoracic but not a cervical spinal cord lesion (SCL). An experimental controlled study. ...
Routledge Faye - - 2007
BACKGROUND: Researchers have discovered that blood pressure (BP) varies in a diurnal manner throughout a 24-hour period, being higher during the day and lower at night. Most people have a dipping BP pattern characterized by a nighttime BP that is 10-20% lower than their daytime BP. Individuals who experience a ...
Abramson Jerome L - - 2006
Elevated blood pressure (BP) variability has been linked to an increased risk for adverse cardiovascular events, but the biologic factors that promote elevated BP variability are not entirely understood. This cross-sectional study examined whether inflammatory factors might be associated with elevated BP variability during 24-hour ambulatory BP monitoring. Subjects were ...
Carter Barry L - - 2006
The purpose of this study was to evaluate the cross-sectional relationship between physician knowledge of hypertension guidelines and blood pressure (BP) control. The authors evaluated a sample of primary care faculty (n=32) and a sample of their patients (n=613). When treating patients as independent observations, the authors found an inverse ...
Thomaides T - - 2006
We aimed to investigate whether transient increases in blood pressure (BP) are associated with headache, by provoking hypertension in 50 non-hypertensive cephalalgia sufferers (Ce), 50 hypertensive cephalalgia sufferers (HyCe) and 50 healthy subjects (C) with a treadmill stress test. Occurrence of headache among groups did not differ (P = 0.81); ...
Yeragani Vikram Kumar - - 2006
Decreased vagal function is associated with vascular dysfunction. In this study, we compared vascular indices and correlated heart rate and QT variability measures with vascular indices in patients with anxiety disorders and normal controls. We compared age- and sex-matched controls (n=23) and patients with anxiety (n=25) using the Vascular Profiler ...
Haberman Christopher E - - 2006
To assess the accuracy and precision of indirect measurements of systemic arterial blood pressure (BP), results obtained with an oscillometric device (BPo) and a Doppler ultrasonic device (BPud) were compared with those obtained by direct radiotelemetry (BPrt) in 12 conscious beagles. The correlation between indirectly obtained and directly measured values ...
Panjwani Usha - - 2006
Ascent to extreme High Altitude (HA) is in steps and it entails acclimatization at moderately HA locations. In terms of acclimatization, it is pertinent to understand the physiological changes, which occur on immediate ascent to moderate HA. The study aimed to evaluate the effect of ascent to 3500 m on ...
Steptoe Andrew A Department of Epidemiology and Public Health, University College London, London, UK. - - 2006
Delayed poststress cardiovascular recovery has been associated with cardiovascular disease risk. This study assessed relationships between systolic blood pressure (BP) recovery, psychosocial risk factors, and delayed recovery of inflammatory and hemostatic variables. Data were analyzed from 228 middle-aged men and women from the Whitehall Psychobiology study who performed color/word and ...
Rastas Sari - - 2006
OBJECTIVES: To investigate the association between blood pressure and mortality in people aged 85 and older. DESIGN: Population-based prospective study with 9-year follow-up. SETTING: Department of Neuroscience and Neurology and Department of Public Health and General Practice, University of Kuopio, and Department of Clinical Neurosciences, Helsinki University Hospital. PARTICIPANTS: Of ...
Ulinski Tim - - 2006
Left ventricular hypertrophy (LVH) is related to a 1,000-fold increased risk of cardiovascular morbidity and mortality in young adults with end-stage renal disease (ESRD) treated with hemodialysis (HD) or peritoneal dialysis. We report a series of 17 children (5 girls, 12 boys), with a median (range) age of 11 (2-18) ...
Worcester Elaine M - - 2006
A significant study from the USA compares cystine stone formers and routine stone formers; the former group had a higher requirement for therapeutic procedures, but this was less if they took chelating agents, although remaining higher than in the latter group. Other interesting findings are also presented. OBJECTIVE: First, to ...
Wong R C-C - - 2006
We conducted this study to determine whether 'office hour', defined as time period from 0800 to 1800 hours, ambulatory blood pressure monitoring (ABPM) predicts daytime ('waking-hour') and 24-h ABPM results, and to examine the impact of sleep disturbance on ABPM and nocturnal dip. Eighty-four patients (mean age 49+/-18 years, 47 ...
Weisbach Volker - - 2006
BACKGROUND: The aim of this study was to investigate the occurrence of hypotension in the 24-hour period after preoperative autologous blood donation (PABD) in patients with and without hypertension. STUDY DESIGN AND METHODS: In 20 patients, 24-hour ambulatory blood pressure monitoring (ABPM) was performed before PABD was started and on ...
Papaioannou Theodore G - - 2006
OBJECTIVES: The occurrence of continuous blood pressure (BP) fluctuations is an intrinsic feature of the cardiovascular system and is related to complex cardiovascular mechanisms and environmental stimulations or daily habits such as coffee drinking. The aim of this study was to investigate the effect of caffeine on indices expressing the ...
Chen Harn-Shen - - 2006
BACKGROUND: This study compares the cardiovascular autonomic function in type 2 diabetes with and without microalbuminuria, in order to identify the possible links between early nephropathy and diabetic autonomic neuropathy (DAN). METHODS: Cardiovascular reflex tests were performed to determine the cardiovascular autonomic function. Thirty cases of type 2 diabetes with ...
Foo Jong Yong Abdiel - - 2006
Imbalance of the human haemodynamic system can provide a prognosis of syncope, dizziness or hypertension. This can be assessed by monitoring its responses to postural change. Examining variations in blood pressure (BP) is deemed an effective means to identify symptoms of this associated condition. However, conventional methods do not promote ...
Hansen S - - 2006
BACKGROUND AND OBJECTIVE: We have investigated the accuracy of the Colin tonometry module, a non-invasive alternative to intra-arterial blood pressure (BP) measurement. The claims of previous publications range between good agreement to significant discrepancies between the Colin tonometry and intra-arterial methods. The Colin method relies on calibration of the tonometry ...
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