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Results 401 - 450 of 1080
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Williams A F - - 1999
Breast cancer-related lymphoedema is a chronic, progressive condition characterized by swelling in the arm and adjacent trunk, with changes to the skin and underlying tissues. The application of compression garments is an essential component in the long-term management of lymphoedema. A wide range of garments is available in the UK; ...
McLafferty R B - - 1999
The use of vibrating tools has been shown to cause Raynaud's syndrome (RS) in a variety of workers, including those who use chain saws, chippers, and grinders. The diagnosis of RS in workers who use vibrating tools is difficult to document objectively. We studied a patient cohort with RS caused ...
Arosio E - - 1999
BACKGROUND: To assess the agreement between a new automatic device (FS-20D) using a cuff-oscillometric method to measure arterial blood pressure (BP) in the fingers and a standard mercury sphygmomanometer. METHODS: The blood pressure measurements were taken in a sequential order, in a sample of both normotensive subjects (n. 57) and ...
Gilmore B - - 1999
OBJECTIVE: To compare pulse oximetry waveform systolic blood pressure measurements (POWSBP) to measurements obtained by noninvasive blood pressure measurement (NIBPM) during the transport of children. DESIGN: A prospective, convenience sample. SETTING AND PARTICIPANTS: All patients transported by a dedicated Pediatric Critical Care Transport Team were eligible for inclusion. Senior transport ...
Peters G L - - 1999
BACKGROUND: Although there is a theoretical basis for crossing legs to increase blood pressure, there are no published data addressing this question. As a result guidelines for measurement of blood pressure are not consistent in recommending that patients legs should not be crossed during measurement. OBJECTIVE: To determine the effect ...
Penny J A - - 1999
OBJECTIVE: To compare the results of simultaneous opposite-arm and sequential same-arm intra-arterial validation of automated blood pressure monitors. DESIGN: Intra-arterial blood pressure measurements were compared with blood pressure measurements obtained using conventional sphygmomanometry and two automated blood pressure monitors (the Dinamap XL and the SpaceLabs Scout) using a methodology based ...
Walczyk JJ - - 1999
Few studies in the domain of reading have explored the relation between time limitations and reading comprehension. Time limitations may enhance reading comprehension by promoting mindfulness in students, a construct which involves exertion of more effort and motivation. This study explored the effects of time constraints on reading comprehension in ...
Campbell N R - - 1999
BACKGROUND: Standardized measurement of blood pressure is widely recommended but rarely applied in usual clinical practice. OBJECTIVE: To determine the differences resulting from physicians using standardized and usual (casual) techniques for measurement of blood pressure. METHODS: Blood pressures measured by a research nurse, ambulatory blood pressure monitoring and echocardiographic estimation ...
Balldin U I - - 1999
Complaints of +Gz-induced arm pain have been expressed by centrifuge subjects and, to a lesser degree, by high performance fighter pilots, usually when the control stick and throttle are positioned below heart level; the pain may be higher during pressure breathing for +Gz protection. Elevated transmural pressure and overdistension of ...
Foster-Fitzpatrick L - - 1999
BACKGROUND: It is clear that numerous factors influence an individual's blood pressure measurement. However, guidelines for accurately measuring blood pressure inconsistently specify that the patient should keep feet flat on the floor. OBJECTIVE: To determine if the crossing of a leg at the knee during blood pressure measurement has an ...
Netea R T - - 1999
AIM: To test the effect of positioning the arm on the arm-rest of a common chair, below the officially recommended right atrial level, on the blood pressure (BP) readings in a group of out-patients. PATIENTS AND METHODS: A group of 69 patients (58 hypertensives; 39 males; mean +/- s.d. age ...
van Dijk D - - 1999
The main purpose of this study was to determine the accuracy and reliability of the Queen Alexandra Pressure Measurement System (QA PMS). Furthermore, we examined whether there were significant differences in measured pressures of the buttock area during sitting between normal subjects and spinal cord injured (SCI) patients. Accuracy (calibration) ...
Radak D - - 1999
The aim of this study was to investigate the sensitivity and specificity of changes of the ankle/brachial pressure index (ABI) and changes in absolute ankle pressure values to detect restenosis in patients who underwent femoropopliteal percutaneous transluminal angioplasty (PTA). In total, 171 patients were followed up prospectively for 12 months; ...
Lu W - - 1999
Using a finite element method (FEM) and a volume oscillometric method with a photo-electric plethysmograph, we tried to determine which location(s) and which bladder width(s) of the occluding cuff would allow the most accurate indirect blood pressure measurements at the human wrist. Nuclear magnetic resonance imaging of the wrist allowed ...
Chow P K - - 1999
The pig is a commonly used large animal model in experimental studies. Few non-invasive techniques exist however for the measurement of blood pressure in the porcine model. This study evaluates the novel use of the easily available neonatal blood pressure cuff for measuring blood pressure in the pig. Six Yorkshire ...
Fronek A - - 1999
Three different femoral artery flow velocity parameters in combination with segmental pressure measurements were evaluated for their respective diagnostic value in identifying the presence or absence of hemodynamically significant aorto-iliac disease. A total of 60 patients (119 legs) were examined both non-invasively and with arteriography. Doppler flow velocities were recorded ...
Greive C.E. - - 1999
Undergraduate nurses from the last four semesters of their course were interviewed about their understanding of the nature of pressure in relation to the use of some nursing devices, blood circulation and the measurement of pressure using a sphygmomanometer. The interview protocol was designed to be investigative during the first ...
Rendell M S - - 1998
OBJECTIVE: There is reason to question whether hyperemia after pressure occlusion is caused solely by local ischemia. This study quantitatively compared the response to the two forms of occlusion on the finger. DESIGN: Blood flow was measured by laser Doppler continuously before, during, and for 40 minutes after a 2-minute ...
López-Beltrán E A - - 1998
A non-invasive technique is implemented to measure a peripheral vascular compliance index Cindex, using an infrared photoplethysmographic waveform as an indicator of intravascular volume change and a continuous blood pressure monitor to measure the blood pressure during each heart-beat. The non-linear behaviour of Cindex with pressure and the effect of ...
Hiller B - - 1998
The hydrostatic method of measuring systolic toe blood pressure has not been validated. A comparison with established non-invasive methods is presented. Conventional sphygmomanometry was applied to assess systolic arterial pressure at the ankle and brachial level; systolic arterial toe pressure was assessed by the hydrostatic method. An 8 MHz Doppler ...
Gardner A W - - 1998
The standard noninvasive test to assess the severity of peripheral arterial occlusive disease (PAOD) is the ankle/brachial systolic blood pressure index (ABI). While ankle systolic blood pressure is obtained by the Doppler ultrasound technique, brachial systolic blood pressure can be obtained by the Doppler, auscultatory, or oscillometric (Dinamap 1846 SX) ...
Wysokinski W E - - 1998
BACKGROUND: This study was designed to evaluate the effect of short-term administration of graded dose of dobutamine on the circulation of the lower limbs in the patients with symptomatic peripheral arterial occlusive disease. METHODS: An ankle-brachial pressure index (ABI) was determined at the time of dobutamine stress echocardiography by measuring ...
Giannattasio C - - 1998
Physical training is associated with an increase in arterial distensibility. Whether the effect of training on this variable is evident also for ordinary levels of exercise or no exercise is unknown, however. We have addressed this issue by investigating the effect on radial artery distensibility of prolonged monolateral immobilization of ...
Masuda H - - 1998
Serum sialic acid is related to mortality from cardiovascular disease and is increased in patients with diabetic microangiopathies. The purpose of this study was to examine whether serum sialic acid is associated with ischemic disease of the lower extremities, using the ankle versus brachial arterial-pressure ratio. The subjects were NIDDM ...
Kay L E - - 1998
BACKGROUND: Equipment, physiologic, and technique factors can influence the accuracy of blood pressure measurement. The current study was designed to isolate certain technique factors and then assess the accuracy of nursing personnel measurements of blood pressure in three residency family practice centers. METHODS: An experienced registered nurse was trained in ...
Imholz B P - - 1998
We review the Finapres technology, embodied in several TNO-prototypes and in the Ohmeda 2300 and 2300e Finapres NIBP. Finapres is an acronym for FINger Arterial PRESsure, the device delivers a continuous finger arterial pressure waveform. Many papers report on the accuracy of the device in comparison with intra-arterial or with ...
Khan S Q - - 1998
BACKGROUND: There are few suitable methods for monitoring blood pressure continuously (or intermittently) for research in adult stroke patients, who are ill but do not justify invasive intensive care monitoring. METHOD: We tested a neonatal arm blood pressure in adults by placing it on the forefinger ("finger cuff"). We compared ...
Gale S S - - 1998
Physiologic observations with blood flow waveform analysis and pressure measurements can document the severity of lower extremity arterial disease. Segmental blood pressures (SEGPs) taken at the thigh, calf, and ankle are commonly used, but their utility has seldom been studied. We quantified improvements in accuracy compared with arteriography when ankle ...
Brinton TJ - - 1998
BACKGROUND: The accurate measurement of arterial blood pressure is essential for the diagnosis and treatment of hypertension. The development of new automated methods of measurement that provide reliable determinations of blood pressure should be valuable in the assessment of hypertension not only in the clinic or hospital but also, in ...
Bovenzi M - - 1998
OBJECTIVES: This study investigated changes in finger circulation after different durations of exposure to hand-transmitted vibration. METHODS: Finger skin temperature (FST), finger blood flow (FBF), and finger systolic blood pressure (FSBP) were measured in the middle fingers of both hands of 10 healthy men. Finger vascular resistance was also estimated. ...
Brinton TJ - - 1998
BACKGROUND: Both the mercury sphygmomanometer and oscillometric measurement methods are widely in use for pediatric, adult, and geriatric patients. However, inherent differences between the methods of measurement may create varying degrees of sensitivity to age and potentially result in differences between measurements for these two techniques. DESIGN: Measurements of systolic ...
Whiteley M S - - 1998
Ankle/brachial pressure index (ABPI) using hand-held Doppler and sphygmomanometer is a standard assessment for patients with peripheral arterial occlusive disease (PAOD). Good Doppler technique is difficult to master and so we investigated replacing Doppler with photoplethysmography (PPG). Two investigators examined 52 legs in 32 vascular patients. Both used standard sphygmomanometer ...
Netea R T - - 1998
BACKGROUND: Several guidelines for the management of hypertension do not give special preference to a specific position of the patient during blood pressure measurement, suggesting that blood pressure readings taken with patients sitting and with patients supine are interchangeable. OBJECTIVE: To test whether there is any difference between the blood ...
Kinsella S M - - 1998
We studied 20 women in labour to see how reporting 'hypotension' after obstetric epidural analgesia is affected by position of the blood pressure cuff and baseline definition. Blood pressure was recorded from both arms simultaneously while the woman was semirecumbent and then in the left lateral position. Three readings were ...
Lee T K - - 1998
In previous studies, oscillometric blood pressure measured from the supraorbital artery has been shown to agree quite well with pressure measured from the brachial artery in normal subjects. In this study, surgical patients whose conditions warranted the use of invasive blood pressure monitoring during the surgery were chosen. We compared ...
Derrick J L - - 1998
OBJECTIVE: We have developed an arterial pressure alarm system based on a modified proportional-derivative (PD) controller algorithm, and prospectively tested its ability to predict significant hypotensive episodes, defined as systolic arterial pressure < 80 mmHg, in comparison to conventional limit alarms. METHODS: The alarm algorithm was tuned to detect hypotension ...
Nilsson S - - 1998
In the prerandomization phase of a clinical trial it is essential to be able to exclude, in a non-invasive way, patients who cannot be randomized into the trial. The ability of routine non-invasive physiological examinations to detect arterial occlusion in the lower extremities was investigated in 182 patients with hypercholesterolaemia. ...
Dieterle T - - 1998
BACKGROUND: Although they have been marketed widely, few data about the diagnostic accuracy of blood pressure monitors are available. METHODS: Repeated measurements of blood pressures in 85 patients were performed in random sequence with two oscillometric blood pressure monitors around the upper arm (Visomat OZ2) and the wrist (Omron R3( ...
Langewouters G J - - 1998
In the clinic, blood pressure is measured almost exclusively using non-invasive intermittent techniques, of which the auscultatory (Riva-Rocci/Korotkoff, RRK) and the computerized oscillometric method are most often used. However, both methods only provide a momentary value. In addition, the accuracy is hampered by phenomena such as cuff response and white ...
Maricq H R - - 1998
The treatment efficacy of patients with Raynaud phenomenon (RP) is determined from the decrease in severity of this condition, usually based on a decrease in frequency of RP attacks as reported by patients in a diary. Although subjective, this method is still the main endpoint measure in clinical trials. The ...
O'Callaghan C J - - 1997
1. Although epidemiological data links essential hypertension with insulin resistance, 'physiological' insulin concentrations have not had pressor effects in humans. Our previous studies suggested that hyperinsulinaemia might have effects on distal blood pressure which are not detected more proximally. Therefore, we used non-invasive techniques to determine the acute effects of ...
Hardie K L - - 1997
BACKGROUND: High-resolution brachial artery ultrasonography is used to study vasodilator response induced by physiologic reactive hyperaemia. We examined the reproducibility of measuring flow-mediated dilatation (FMD) on two occasions. AIMS: To determine the degree of variability of this technique in our vascular laboratory for the design of clinical research studies. METHODS: ...
Kööbi T - - 1997
OBJECTIVE: To determine the reliability of whole-body impedance cardiography (ICGWB), with electrodes attached to wrists and ankles, in the measurement of cardiac output (CO) on the basis of simultaneous comparison with thermodilution (TD) and direct oxygen Fick (Fick) methods. DESIGN: Prospective clinical study. SETTING: A surgical intensive care unit at ...
Kugler J - - 1997
Blood pressure is usually determined by arm sphygmomanometry. However, this technique does not allow continuous blood pressure monitoring. Over the last years, a technique introduced by Peñaz makes it feasible to determine blood pressure noninvasively and continuously from the finger artery. Study on 46 normotensives showed that both methods have ...
Atkins N - - 1997
The most fallible component of blood pressure measurement is the human observer. The traditional technique of measuring blood pressure does not allow the result of the measurement to be checked by independent observers, thereby leaving the method open to bias. In the Sphygmocorder, several components used to measure blood pressure ...
Dixon R M - - 1997
Members of the new class of antimigraine compounds, 5HT1B/1D agonists, as well as ergotamine, may cause vasoconstriction through stimulation of 5HT receptors on peripheral vessels. The cardiovascular effects of 20 mg oral zolmitriptan (Zomig, formerly 311C90), 2 mg oral ergotamine and the combination were assessed in a randomized double-blind, placebo-controlled ...
Vayssariat M - - 1997
OBJECTIVES: To compare the value of ankle and toe pressures as regards the diagnosis of critical ischaemia, its prognosis, and the need for vascular surgery. DESIGN: University hospital-based retrospective study. MATERIALS AND METHODS: Fifty-seven patients (23 women and 34 men) with gangrene or rest pain had a haemodynamic evaluation combining ...
O'Brien E - - 1997
When the technique of blood pressure measurement was introduced into clinical medicine in the early years of this century, the importance of accuracy and the limitations of the technique were well recognized [1]. However, the standards called for by the clinicians and scientists who pioneered blood pressure measurement were relaxed ...
Hotz P - - 1997
It has been suggested the risk of hydrocarbon-induced chronic nephropathy is negligible at low exposure levels. The first purpose of the study was to test this hypothesis by selecting a population slightly exposed to hydrocarbons. Moreover, as hypertension might be associated with an increased excretion of nephrotoxic mercapturates, the association ...
Olin J M - - 1997
OBJECTIVE: To evaluate instrument placement and accuracy of indirect physiologic monitoring techniques in anesthetized domestic ferrets. ANIMALS: 10 healthy adult female ferrets (Mustela putorius furo). PROCEDURE: Direct arterial blood pressure measurement and arterial blood sample collection were performed in ferrets. A pulse oximeter probe was clipped to a forefoot or ...
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