Search Results
Results 651 - 700 of 1364
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Mansoor GA - - 1997
BACKGROUND: The lack of prospective data on the relative value of ambulatory blood pressure compared with office blood pressure as well as concern about increased costs have led to cautious endorsement of such monitoring in the clinical arena. Several consensus bodies have reviewed the scientific evidence and have suggested appropriate ...
Biswas A - - 1997
OBJECTIVE: To determine the role of ambulatory blood pressure monitoring in the diagnosis of pregnancy-induced hypertension in women detected as hypertensive in the clinic by the conventional method. DESIGN: An observational study of ambulatory blood pressure monitoring. SETTING: A teaching hospital in Singapore. METHODS: One hundred and twenty-eight women between ...
Zanchetti A - - 1997
The introduction of noninvasive techniques for the repetitive measurement of blood pressure in ambulant subjects has permitted improved precision in the assessment of hypertension during normal daily life. The traditional clinic (or "office") method of blood pressure measurement has the advantages of simplicity and low cost, and forms the basis ...
Broege PA - - 1997
OBJECTIVE: To examine how the style of coping with anxiety influences ambulatory blood pressures measured in work and home environments for 63 women aged 34 +/- 8 years employed as nurses. METHODS: Awake ambulatory blood pressures measured at work (n = 38 readings) and at home (n =7 readings) were ...
Musso N R - - 1997
We tested the reproducibility of ambulatory blood pressure monitoring (ABPM) by the use of agreement plots. Thirty-two normotensive volunteers underwent ABPM on four separate days (interval 28 days), on the same typical weekday. Sleeping time was restricted to the ABPM nighttime subperiod from 11:00 PM to 7:00 AM. Twenty-four-hour average ...
Richey PA - - 1997
OBJECTIVE: To describe our experience with the AM5600 (Advanced Medical Products, inc.) ambulatory blood pressure recorder-Holter monitor which has the unique features of providing full disclosure Holter data and the storage of Korotkoff signals for each blood pressure measurement. METHODS: We performed a total of 236 recording sessions with 118 ...
Imai Y - - 1997
OBJECTIVE: To investigate factors affecting the nocturnal decrease in blood pressure. DESIGN: A cross-sectional study of 823 community-based untreated subjects aged > 20 years. Screening and ambulatory blood pressures were measured and the effects of age and the ambulatory blood pressure on the nocturnal decrease were examined. RESULTS: The magnitude ...
Fujishima S - - 1997
A patient is presented in whom the preoperative diagnosis of an intravesical pheochromocytoma was facilitated by noninvasive ambulatory blood pressure monitoring. A fifty-two-year-old Japanese man suffered headache and palpitation after micturition. Cystoscopy revealed an intravesical tumor. To investigate whether his symptoms were associated with an elevation of blood pressure, the ...
Lins R L - - 1997
OBJECTIVE: To evaluate the relation between total body water and dialysis related hypertension. PATIENTS AND METHODS: Thirty stable chronic hemodialysis patients were studied. Twenty-four-hour ambulatory blood pressure on the day before dialysis, blood pressure before and after dialysis, weight gain, ultrafiltration and total body water were determined. Total body water ...
Mansoor G A - - 1997
The advent of ambulatory blood pressure monitoring has led to an improved reliability of blood pressure measurement. A consensus has emerged that such monitoring of blood pressure more closely identifies hypertensive organ damage than does office blood pressure. The application of this technology to various aspects of vascular disease is ...
Mancia G - - 1997
Ambulatory blood pressure is more closely related to the end organ damage of hypertension than clinic blood pressure is. This is the case not only for left ventricular hypertrophy, but also for an index of renal involvement such as microalbuminuria. The closer correlation of ambulatory blood pressure with end organ ...
Lingens N - - 1997
Ambulatory blood pressure monitoring over 24 h was applied in 31 children with kidney disease, aged 3-19 (median 11) years, in the absence of renal insufficiency and without antihypertensive therapy. Median creatinine clearance was 112 ml/min/1.73m2. Ambulatory blood pressure monitoring revealed that eight patients (26%) were hypertensive during the daytime, ...
Shapiro D - - 1997
In this study, we examined relationships between moods and both ambulatory blood pressure and heart rate in 197 men and women college students. Participants who reported frequently feeling angry during the day had higher levels of blood pressure, especially diastolic pressure during sleep. Reports of sad feelings were positively correlated ...
Okutani M - - 1997
Most ambulatory blood pressure monitoring (ABPM) studies have used a mechanical clock as the reference time, but there is no biologic background for assuming that midnight by the mechanical clock is zero hour by the biologic clock. The aim of this study was to determine the biologic zero hour as ...
Bigda J - - 1997
The aim of the study was to evaluate the potential association between ambulatory blood pressure and the molecular variants T174M and M235T of the angiotensinogen gene in a random sample of young normotensive men (n = 145). The two point mutations were detected using restriction digests of a mispairing polymerase ...
Donner-Banzhoff N - - 1997
OBJECTIVE: To determine whether there is an association between the 'clinic-home blood pressure difference' (CHBPD) and psychological distress in a sample not selected without regard to blood pressure and hypertension status. DESIGN: A cross-sectional study. SETTING: An academic family medicine department in Toronto, Canada. PARTICIPANTS: Consecutive attenders (n = 214) ...
Lede R L - - 1997
The purpose of this study was to determine the degree of agreement among different frequencies of blood pressure measurements (FoM) in 24-hour ambulatory blood pressure monitoring (ABPM) in their ability to obtain useful clinical information. ABPM records were obtained with a Del Mar IV Avionics device from 49 hospitalised preeclamptic ...
Moore C R - - 1997
Criteria for the diagnosis or exclusion of hypertension using ambulatory blood pressure monitoring have not been agreed upon. We designed this study to provide a statistically based guide for using results of ambulatory blood pressure monitoring to resolve this issue. To generate this information, we used a database of 228 ...
Gosse P - - 1997
Alteration in the physical properties of the large arteries is probably an important contributory factor in morbidity and mortality in the elderly as well as in patients with hypertension or diabetes. We have developed a simple method based on the ambulatory measurement of the timing of Korotkoff sounds (QKD interval), ...
Sturrock N D - - 1997
We have undertaken a randomized, observer-blinded comparison of three different methods of assessing blood pressure in 40 outpatients with hypertension complicating diabetes mellitus: the Hawksley random zero sphygmomanometer (RZS) by two observers using a dual headed stethoscope; the semi-automated Dinamap monitor, and 24-h ambulatory blood pressure monitoring (ABPM) using a ...
Halligan A W - - 1997
OBJECTIVES: To investigate the relation between antenatal clinic, obstetric day unit and 24-hour ambulatory blood pressure measurements and 24-hour proteinuria levels in hypertensive pregnancies. DESIGN: An observational study. PARTICIPANTS: Forty-eight women presenting with new hypertension after 20 weeks of gestation. RESULTS: The closest relation was found between ambulatory blood pressure ...
Neutel J M - - 1997
It has been known for many years that humans possess internal time clocks that regulate multiple physiologic factors (chronobiology). Epidemiologic studies have demonstrated that the peak incidence of many diseases, including respiratory disease (asthma, allergy), cardiovascular disease (hypotension, angina, myocardial infarction, stroke), as well as several others, tends to occur ...
Ohkubo T - - 1997
Ambulatory blood pressure monitoring is now being used widely in Japan. Several Japanese studies have value demonstrated that the ambulatory blood pressure is superior to the casual blood pressure in prediction of target organ damage. Ambulatory blood pressure monitoring has also been reported to be more cost effective than are ...
Gosse P - - 1997
The relation between ambulatory blood pressure and left ventricular mass has been studied with three main aims. The first aim was to validate this new technique for measuring blood pressure. Most studies have shown that the left ventricular mass is correlated more closely to the ambulatory blood pressure than it ...
Staessen JA - - 1997
An operational threshold for making clinical decisions on the basis of ambulatory blood pressure monitoring must be defined [1-3]. This requires that the relationship between the ambulatory blood pressure and the incidence of cardiovascular complications be clarified beyond present understanding [4-7]. In addition, the distribution of the ambulatory blood pressure ...
Forte P - - 1997
BACKGROUND: There is indirect evidence that nitric oxide (NO) synthesis in vascular endothelium of patients with hypertension is altered. The aim of this study was to estimate more directly NO production in patients with untreated essential hypertension by measurement of synthesis of inorganic nitrate, which is the end product of ...
Amoore J N - - 1997
A number of simulators have been developed for testing and evaluating oscillometric non-invasive blood pressure (NIBP) monitors. These simulators may be used to assist with the routine and corrective maintenance of NIBP monitors; for training clinical staff in the use and limitations of oscillometric NIBP monitors; to complement clinical trials ...
Kallet A J - - 1997
OBJECTIVE: To compare blood pressure and heart rate measurements performed in a veterinary clinic to similar measurements performed in a dog's home. DESIGN: Prospective study. ANIMALS: 14 client-owned, clinically normal dogs. PROCEDURE: Sequential blood pressure and heart rate measurements were recorded from the metatarsus and metacarpus of conscious dogs by ...
Amoore J N - - 1997
The Critikon Dinamap 8100 and the Spacelabs 90207 ambulatory non-invasive blood pressure (NIBP) monitors were evaluated using a test simulator using an evaluation protocol which covered a wide range of simulated pressures (with five determinations at each of six steps from 60/30 to 200/150 mm Hg), pulse rates (from 40 ...
Mancia G - - 1997
ADVANTAGES OF AMBULATORY BLOOD PRESSURE MONITORING: Ambulatory blood pressure monitoring is now used widely to assess the efficacy of antihypertensive drugs in daily life conditions. These 24-h measurements have a number of advantages compared to conventional sphygmomanometric readings. Although a small placebo effect is observed in the first few hours ...
White L M - - 1997
The purpose of this study was to evaluate heart rate and blood pressure responses to a commercially available source of ma-haung, a natural source of the sympathomimetic substance, ephedrine, and to evaluate the pharmacokinetic properties of the product in normotensive, healthy adults. On day 1, twelve study participants were monitored ...
Morgan T - - 1997
OBJECTIVE: To determine the clinic and ambulatory blood pressure when the same dose of perindopril (4 mg) is administered in the morning (0900 h), or at night (2100 h), in particular, to determine whether the early morning blood pressure rise, the duration of effect and the pattern of response differed. ...
Lingens N - - 1997
Ambulatory blood pressure monitoring was applied in 27 pediatric patients aged 6.3-24.3 (median 15.0) years who had been transplanted 1.5-8.4 years previously. Daytime values were compared with the mean of 10 concomitant casual blood pressure recordings. At the time of the study, antihypertensive drugs were given to 17 patients. Inulin ...
Fogari R - - 1997
OBJECTIVE: To evaluate the effects of a westward transmeridian flight over six time zones (from Milan to New York) on ambulatory blood pressure monitoring (ABPM) in normotensive individuals. METHODS: Eighteen normotensive subjects (blood pressure < 140/90 mmHg), 11 men and seven women, of mean age 38.3 years, were studied. On ...
Bai J - - 1997
A home electrocardiography (ECG) and blood pressure telemonitoring system for cardiac patients was installed in the Macau region. The monitoring centre was established in the emergency unit at the Government Hospital of Macau. The first users were 10 cardiovascular patients selected by a physician. The average age of these users ...
Fagard R H - - 1997
We performed imaging echocardiography, Doppler velocimetry, and repeated clinic and ambulatory blood pressure measurements in 74 hypertensive individuals to clarify why reports differ on the strength of the relationships of left ventricular characteristics with clinic blood pressure, on the superiority of ambulatory over clinic pressure, and on the importance of ...
Guasti L - - 1997
OBJECTIVE AND DESIGN: Controversial data have been reported on plasma catecholamines in hypertensives. Aims of this study were to find whether 24-hour ambulatory blood pressure was correlated with circulating catecholamines and to investigate whether nocturnal blood pressure reduction was associated with baseline plasma catecholamines. Samples for catecholamine determination were obtained ...
Mancia G - - 1997
While assessing the cardiovascular risk of hypertensive patients, different types of blood pressure measurements can be regarded as suitable surrogate endpoints. In this context the possible role of clinic, stress, exercise, basal, home and ambulatory blood pressures is briefly discussed. The clinical value of night-time blood pressure, of the clinic-daytime ...
Dionisio P - - 1997
The pathophysiology of hypertension in patients on renal replacement therapy is not yet clear, and the role of extracellular fluid overload is still a matter of debate. The main problem is the lack of techniques to determine the fluid state. Recently new noninvasive techniques have become available which make it ...
Myers M G - - 1996
Ambulatory blood pressure monitoring is rapidly becoming an integral part of the diagnosis and management of hypertensive patients, particularly in major urban Canadian centres. To date, there have been several attempts to define the indications for ambulatory blood pressure monitoring, the most recent coming from an ad hoc panel of ...
Calvo-Vargas CG - - 1996
OBJECTIVE: To compare 24 h blood pressure changes in medical residents when on call with those of a normal workday. DESIGN: Ambulatory blood pressure was recorded in 30 normotensive residents (14 men and 16 women) aged 27+/-2 years, during on-call workdays (24 h in the hospital) and then compared with ...
Dart RA - - 1996
Since 1988, ambulatory blood pressure monitoring (ABPM) as an outpatient assessment of patients with high blood pressure has been offered through the Department of Hypertension and Nephrology at the Marshfield Clinic. This article summarizes that experience from a review of 318 patients who have undergone 24 h ABPM. The purpose ...
Vaile J C - - 1996
OBJECTIVE: Baroreflex sensitivity (BRS) increases during sleep, whereas arterial blood pressure falls. Some hypertensive patients do not have a nocturnal fall in blood pressure (non-dippers). The objective was to ascertain whether there is a difference between 24 h BRS values in dippers and non-dippers that might account for the difference ...
Myers M G - - 1996
The increasing availability of ambulatory blood pressure monitoring has shifted interest in blood pressure measurement from the doctor's office to the entire 24-h period. Routine office blood pressure recordings correlate poorly with left ventricular mass, a sign of early target-organ damage. In contrast, ambulatory blood pressure or estimates of 24-h ...
Minami J - - 1996
OBJECTIVE: To study the influence of seasons on blood pressure in ordinary circumstances. DESIGN AND METHODS: We examined seasonal variations of home and 24 h ambulatory and office blood pressures in outpatients with essential hypertension. Office, home and ambulatory blood pressures of 50 outpatients with essential hypertension were recorded in ...
DiPette D J - - 1996
Despite tremendous advances in detection and treatment, including both non-pharmacologic and pharmacologic methods, hypertension continues to be a major health concern. In addition to efforts at reducing mortality, recent clinical and research attention has been focused on reducing morbidity from hypertension. Therefore, such efforts are focused on the effect of ...
Townsend R R - - 1996
The number of patients undergoing ambulatory blood pressure monitoring (ABPM) and the number of publications using this technique to evaluate the risks and effects of high blood pressure on target organs has been increasing, and dramatically so, in the last 5 years. Much of this growth has centered on the ...
James GD - - 1996
OBJECTIVE: To compare the awake ambulatory and seated casual blood pressure responses to extreme changes in dietary sodium during a 4-month period between borderline hypertensive men (n = 24, aged 51+/- 7 years) and women (n = 8, aged 47+/- 8 years). METHODS: Seated casual and awake ambulatory (over an ...
White W B - - 1996
The ambulatory blood pressure load is generally defined as the proportion of elevated systolic or diastolic pressures over a 24 h period. This value represents the chronic pressure overload that induces myocardial and vascular damage associated with the hypertensive disease process. Blood pressure load has been defined as either the ...
Schillaci G - - 1996
OBJECTIVE: To determine the independent predictors of day-night blood pressure changes in a large population of subjects with essential hypertension. METHODS: We studied 2042 white untreated subjects with essential hypertension (mean age 52 years, range 17-93, 1052 men) who underwent 24 h ambulatory blood pressure monitoring on an outpatient basis. ...
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