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Results 451 - 500 of 1378
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Myers M G - - 2001
Ambulatory blood pressure (ABP) monitoring has become increasingly more available in routine clinical practice in Canada. The ABP is more reliable and more reproducible than office readings, and is a better predictor of target organ damage. Normal values for ABP have been established using both cross-sectional and longitudinal outcome data. ...
Wendelin-Saarenhovi M - - 2001
The aim of this study was to evaluate the long-term reproducibility and validity of 24-h ambulatory blood pressure measurements (ABPM) in an unselected elderly population. In a rural Finnish community 503 randomly chosen invited persons over 65 years of age participated and went through 24-h ABPM. As part of the ...
Uiterwaal C S - - 2001
Control of blood pressure still relies on conventional office or clinical blood pressure measurement using mercury sphygmomanometry. However, it has long been known that office measurement, even when repeated, does not fully reflect usual blood pressure. The additional use of ambulatory devices for prolonged periods of blood pressure measurement is ...
Sorof J M - - 2001
Ambulatory blood pressure monitoring (ABPM) has emerged as a valuable clinical and research tool in the assessment of pediatric hypertension. Large databases of 24-hour blood pressure monitorings in healthy children are under development for establishing normal reference values analogous to the Task Force data for casual blood pressure. In the ...
Cacciatore B - - 2001
OBJECTIVE: The aim of this study was to assess whether oral delivery and transdermal delivery of sequential combined hormone replacement therapy have similar effects on systemic blood pressure, as measured by 24-hour automated ambulatory recordings. STUDY DESIGN: Eighty-two healthy postmenopausal women, of whom 73 completed the study, were randomly assigned ...
Gosse P - - 2001
BACKGROUND: Reduced distensibility of large arteries plays an important role in cardiovascular risk. Determination of the QKD interval during the ambulatory measurement of blood pressure enables calculation of an index of arterial distensibility. This index, the QKD(100-60), is the theoretical value of QKD at systolic blood pressure of 100mmHg and ...
Oomen C C - - 2001
The purpose of the present study was to examine effects of time pressure on mechanisms of speech production and self-monitoring. The most widely accepted monitoring theory (Levelt, 1989) suggests that monitoring proceeds through language perception, that is, speech error detection is primarily based on the parsing of one's own inner ...
Lim P O - - 2001
Submaximal exercise systolic blood pressure (ExSBP) is a recognised predictor of cardiac mortality. This study examined the possibility that this might be related to increased QT dispersion or prolonged maximum QT(c) interval (QTcmax). Twenty-nine untreated hypertensive subjects were assessed. Each subject underwent an echocardiographic examination and a 24-h ambulatory blood ...
Alagiakrishnan K - - 2001
Blood pressure dysregulation syndrome is characterized by abnormal swings in blood pressure following postural changes, meals, exercise, and during sleep. Although the syndrome may occur in normotensive individuals, a growing body of evidence suggests an association between blood pressure dysregulation and hypertension. Diagnosis can be aided using 24-hour ambulatory blood ...
Baru M B - - 2001
We describe the noninvasive real-time pressure monitoring of Boc- and Fmoc-based peptide synthesis. Pressure was measured using a resistance strain gauge attached to the inlet of a continuous-flow reactor of variable volume. In the assembly of the 'difficult' polyalanine sequence, it was shown that pressure monitoring can reveal structural variations ...
Khattar R S - - 2001
This study assessed the prognostic value of ambulatory vs. clinic blood pressure measurement in 688 hypertensives who had undergone pretreatment 24-hour intra-arterial ambulatory blood pressure monitoring. A total of 157 first events were recorded over a follow-up period of 9.2A+/-4.4 years. Ambulatory systolic or diastolic blood pressure parameters (whether 24-hour ...
Zakopoulos N A - - 2001
BACKGROUND: Data on the reproducibility of serial measurements of ambulatory blood pressure in hypertensive patients are lacking. The purpose of this study was to examine (1) the reproducibility of four consecutive ambulatory blood pressure measurements, and (2) the reproducibility of nocturnal falls in blood pressure in hypertensive patients. METHODS: Twenty ...
Perk G - - 2001
Nondipping, ie, failure to reduce blood pressure by >/=10% during the night, is considered an important prognostic variable of 24-hour ambulatory blood pressure monitoring. However, some people wake up at night to urinate. Usually, 24-hour ambulatory blood pressure monitoring-derived blood pressure includes these rises in the nighttime blood pressure mean. ...
Watanabe Y - - 2001
Helio-geomagnetic influences on the human circulation are investigated on the basis of an 11-year-long record from a clinically healthy cardiologist, 35 years of age at the start of monitoring. He measured his blood pressure and heart rate around the clock with an ambulatory monitor programmed to inflate an arm cuff, ...
Grossmann M - - 2001
Blood pressure effects of cardiac glycosides in humans have been infrequently reported. Although direct infusion of ouabain or digoxin causes vasoconstriction, indirect effects of cardiac glycosides may have the opposite effect, owing to changes in sympatho-vagal balance. This paper summarises three studies on the effects of cardiac glycosides on circadian ...
Friedman R - - 2001
OBJECTIVE: The evidence linking hypertension with personality or psychological characteristics, such as anger, anxiety, or depression, remains equivocal. This may be due in part to limitations of personality theory, confounding by awareness of hypertension, and/or inherent difficulties in measuring blood pressure. This study was designed to investigate the association between ...
Arildsen H - - 2001
AIM: To estimate the reproducibility of QT parameters derived from 24-hour ambulatory ECG recordings. METHOD: Ten healthy volunteers aged 25 to 41 years participated. In two 24-hour ambulatory ECG recordings obtained 1 day apart, the QT interval was measured manually at stable heart rates in approximately 16 periods during daytime ...
McGhee B H - - 2001
BACKGROUND: Direct monitoring of arterial blood pressure provides continuous, real-time information about patients' physiological status. Critical care nurses set up and maintain monitoring systems and use the obtained data to guide clinical decisions. Inaccurate measurements may lead to misdiagnosis and mismanagement. PURPOSE: To describe critical care nurses' knowledge in 3 ...
Jamieson M J - - 2001
Ambulatory blood-pressure monitoring (ABPM) is accepted in the evaluation and management of hypertension. The use of ABPM in heart failure has received considerably less attention. Many patients with advanced heart failure experience disabling fatigue, orthostatic dizziness and symptoms of coronary and cerebrovascular insufficiency that may relate to periods of hypotension. ...
Dale A - - 2001
Twenty-four-hour ambulatory blood pressure was measured in seven normotensive and 10 hypertensive patients with biopsy proven mesangial proliferative glomerulonephritis (MPG). In normotensive patients, the nocturnal blood pressure variation was seen with a nightly drop in blood pressure while in hypertensive patients with MPG, 24-h blood pressure level was increased both ...
Stergiou G S - - 2000
OBJECTIVE: To investigate whether measurement of blood pressure at home (HBP) and by ambulatory monitoring (ABP) are reliable alternatives to the traditional strategy for the diagnosis of hypertension based on blood pressure measurement on repeated clinic visits (CBP). DESIGN: Comparison of the diagnosis of hypertension based on HBP (on six ...
Shimizu K - - 2000
Non-invasive ambulatory blood pressure monitoring has been used to assess circadian rhythms in blood pressure in a qualitative fashion. However, there are no established methods for assessing circadian changes in blood pressure in a quantitative fashion. In this study, we developed a quantitative method to evaluate the circadian rhythm based ...
Bridges E J - - 2000
Numerous research-based guidelines for PA pressure monitoring are available. Despite the availability of this large body of literature related to PA pressure monitoring, critical care nurses continue to demonstrate insufficient knowledge and ability to apply information related to the collection and interpretation of data obtained with a PA catheter. This ...
Parati G - - 2000
Blood pressure fall at night is commonly used to classify subjects as 'dippers' or 'non-dippers'. Such a classification is poorly reproducible, however, due to interference by a number of confounders. These include methodological problems with ambulatory blood pressure monitoring at night due to a variable hydrostatic difference between the arm ...
Björklund K - - 2000
OBJECTIVES: The principal aim was to study ambulatory and office blood pressure in a population of elderly men. We also wanted to describe the prevalence of hypertension and investigate the blood pressure control in treated elderly hypertensives. DESIGN: A cross-sectional study of a population of elderly men, conducted between 1991 ...
Ekmekcioglu C - - 2000
CONTEXT: Balneotherapy, a treatment that includes carbon dioxide and mud baths as well as massages and physical therapy, is successfully used in the treatment of rheumatic pain and other disorders such as cardiovascular and gynecological disease. OBJECTIVE: To study the effect of a 3-week treatment of balneotherapy on 24-hour ambulatory ...
Mehos B M - - 2000
This prospective, randomized, controlled study evaluated the impact of pharmacist-initiated home blood pressure monitoring and intervention on blood pressure control, therapy compliance, and quality of life (QOL). Subjects were 36 patients with uncontrolled stage 1 or 2 hypertension. Eighteen subjects received home blood pressure monitors, a diary, and instructions to ...
Kikuya M - - 2000
To investigate the association between cardiovascular mortality and short-term variabilities in blood pressure and heart rate, we performed a long-term prospective study of ambulatory blood pressure monitoring in Ohasama, Japan, starting in 1987. We obtained ambulatory blood pressure and heart rate in 1542 subjects >/=40 years of age. Blood pressure ...
Hanten W P - - 2000
BACKGROUND AND PURPOSE: Myofascial trigger points (TPs) are found among patients who have neck and upper back pain. The purpose of this study was to determine the effectiveness of a home program of ischemic pressure followed by sustained stretching for the treatment of myofascial TPs. SUBJECTS: Forty adults (17 male, ...
Bang L E - - 2000
The acute effect of smoking is a rise in blood pressure and heart rate. Nevertheless, in several epidemiologic studies, smokers tend to have a slightly lower office blood pressure than non-smokers. We studied the 24 h ambulatory blood pressure consecutively in hypertensive smokers (> or = 10 cigarettes per day, ...
Wilson M D - - 2000
Office blood pressure measurement is the standard for assessing blood pressure control. Many patients, however, take their antihypertensive medication in the morning, so they are likely to have their office blood pressure measured during the maximal antihypertensive effect. It is therefore unknown whether patients deemed by office blood pressure to ...
Kuznetsova T - - 2000
OBJECTIVE: To describe the distributions of the ambulatory blood pressure in a sample drawn from the Siberian population. METHODS: In the European Project On Genes in Hypertension (EPOGH), a random population sample of 162 persons (72 men and 90 women) was investigated in Novosibirsk, Russia. Mean age (+/-SD) was 40.6+/-15.3 ...
Ng K G - - 2000
OBJECTIVE: To evaluate the performance of nine self-measurement oscillometric blood pressure monitors using a simulator. METHODS: For each monitor, simulation data from 48 sets of simulated waveforms with four simulations for each set were used for analysis. The waveforms represent a wide range of blood pressure. The monitor-simulator blood pressure ...
Colombo F - - 2000
BACKGROUND: The introduction of ambulatory blood pressure monitoring into clinical practice has defined a clinical condition called 'isolated office hypertension'. OBJECTIVE: The aim of this study was to evaluate the long-term systolic and diastolic blood pressure changes in patients with isolated office hypertension and to identify the presence of markers ...
Forjaz C L - - 2000
BACKGROUND: Post-exercise hypotension has been extensively described under laboratory conditions. However, studies investigating the persistence of this post-exercise decrease in blood pressure for longer periods have produced controversial results. The present investigation was conducted to verify the effect of a single bout of exercise on ambulatory blood pressure and to ...
O'Sullivan J J - - 2000
OBJECTIVE: Tracking of blood pressure begins in childhood but the relationship between casual blood pressure in childhood and adult levels is not strong enough to predict adult hypertension. The variability of blood pressure in children might suggest that 24 recordings would have less consistency than casual readings when repeated even ...
Davies C W - - 2000
BACKGROUND: There is considerable debate regarding the relationship between obstructive sleep apnoea (OSA) and hypertension. It is unclear whether OSA is an independent vascular risk factor as studies attempting to assess this association have produced conflicting results because of confounding variables such as upper body obesity, alcohol, and smoking. A ...
Fossali E - - 2000
Neurofibromatosis type 1 (NF1) is associated with vascular lesions, such as renal artery stenosis, and secondary hypertension. The real prevalence is largely unknown, particularly in children. We observed 27 patients with NF1, mean age 12.8 years (range 4.2-24 years), for 2-10 years to assess the association of NF1 with vascular ...
Gerc V - - 2000
BACKGROUND: Because ambulatory blood pressure monitoring (ABPM) is not available everywhere, the objective of the study was to determine whether nurse-measured blood pressure could be an acceptable substitute to ABPM. METHODS: We analyzed the data of 2385 consecutive patients referred to our hypertension clinic for the performance of ABPM. Before ...
Jones C R - - 2000
OBJECTIVE: To assess the clinical accuracy of the Mobil O Graph (version 12) ambulatory blood pressure monitor in an adult population. METHODS: The accuracy of the device was assessed by predefined criteria (British Hypertension Society, BHS) in 85 subjects recruited from the patients and staff in a teaching hospital. A ...
Dimsdale J E - - 2000
BACKGROUND: Increasing evidence documents the fact that individuals whose blood pressure drops or 'dips' relatively little at night have a higher risk of numerous cardiovascular illnesses. OBJECTIVE: To examine the reliability of various measures of nocturnal blood pressure dipping. METHODS: This study examined 17 individuals with ambulatory blood pressure monitoring ...
Trocóniz I F - - 2000
OBJECTIVES: To compare the results of the pharmacokinetic-pharmacodynamic analyses of 24-hour ambulatory blood pressure measurements and manual blood pressure data in patients receiving moxonidine. METHODS: 32 patients with borderline to mild-to-moderate hypertension were enrolled in a double-blind, placebo-controlled phase II study. After receiving placebo for 1 week (run-in phase), the ...
Tóth L - - 2000
Our aim was to compare the diurnal blood pressure patterns of people with Type 1 diabetes on continuous ambulatory peritoneal dialysis (CAPD, n=9) or haemodialysis (n=10) to diabetic patients with normo-albuminuria (n=12) or micro-albuminuria (n=15). Blood pressure was measured with an ABPM02 Meditech oscillometric blood pressure monitor. The micro-albuminuric group ...
Dzien A - - 2000
Blood pressure control in many hypertensive patients remains imperfect, also because routine office blood pressure can only give limited information about diurnal variations and nocturnal dipping. It was the aim of our evaluation to study the efficacy of antihypertensive therapy and the correlation between repeated office blood pressure values and ...
Ragot S - - 2000
Our objective was to compare three different methods of blood pressure measurement through the results of a controlled study aimed at comparing the antihypertensive effects of trandolapril and losartan. Two hundred and twenty-nine hypertensive patients were randomized in a double-blind parallel group study. After a 3-week placebo period, they received ...
Heise T - - 2000
BACKGROUND: In type 1 diabetic patients with nephropathy, tight blood pressure control has been shown to prevent the progression of the disease. Up until now, self-monitoring, ambulatory and office blood pressure values have not been compared in these patients. Thus, we have evaluated blood pressure values obtained in the office ...
Brook R D - - 2000
Long-term morbidity and mortality from hypertension are more closely related to home than to casual office blood pressure levels. There is no generally accepted recommendation on how to best schedule home blood pressure (HBP) recordings, perhaps because the effect of varying the home monitoring schedule on the HBP average is ...
Verdecchia P - - 2000
BACKGROUND: The long-term effects of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers on ambulatory blood pressure and cardiac performance have never been examined comparatively. OBJECTIVE: We compared losartan and enalapril in their long-term effects on office and ambulatory blood pressure, cardiac structure and function, and routine biochemical tests. DESIGN: ...
O'Shea J C - - 2000
This study was designed to describe the interaction between physical activity (PA), quantified objectively by electronic activity monitors, and ambulatory blood pressure (ABP), and to test the hypothesis that modifying daily PA can effect significant changes in the diurnal variation in blood pressure and may result in altered dipping/nondipping status ...
Sturrock N D - - 2000
AIMS: To assess the relevance of circadian blood pressure variation to future morbidity and mortality in patients with diabetes mellitus. METHODS: A retrospective descriptive 4 year follow-up study of data collected after ambulatory blood pressure monitoring in a clinic setting. RESULTS: Seventy-five patients (46 male; 29 female) of whom 41 ...
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