Search Results
Results 301 - 350 of 1077
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Jagomägi Kersti - - 2003
The aim of this study was to investigate changes in the finger blood pressure during a deep breathing test (DB) and to find out whether the mean blood pressure might be used as a substitute for the systolic pressure in calculations of baroreflex sensitivity from data derived from the DB ...
Kröger Knut - - 2003
The Trans-Atlantic Inter-Society Consensus (TASC)-recommended absolute toe pressure is < 30-50 mm Hg for definition of chronic critical limb ischemia (CLI). Toe pressures can be measured by different techniques. The authors analyzed the clinical use of the Doppler technique and an automatic device with optical sensors and estimated their value ...
Clark Jeff A - - 2002
OBJECTIVE: The current recommendation for choosing an appropriate size cuff for measuring blood pressure (BP) is a bladder width to equal 40% of the upper arm circumference (UAC). However, most physicians use the older two-thirds or three-fourths upper arm length (UAL) recommendations to choose a cuff. The aim of this ...
Nelesen Richard A - - 2002
BACKGROUND: Non-invasive continuous blood pressure monitoring has, for the past decade, been performed using the Finapres monitor. Radial tonometry is a new methodology for measuring non-invasive beat-to-beat blood pressure. This technique has been evaluated for other applications, but its use in cardiovascular reactivity testing has not yet been reported. DESIGN: ...
Patil S - - 2002
Ischemic complications after total knee arthroplasty (TKA) are rare. There is a reported association with chronic lower extremity ischemia (CLEI), however. This prospective study examined changes in blood pressure in the lower limb during the early postoperative period. Arterial blood pressure was assessed before and after TKA by the ankle ...
Alavi Hossain - - 2002
BACKGROUND: Arterial elasticity is implicated as a risk factor for or a marker of cardiovascular disease. Current advances in non-invasive devices have now made it possible to measure arterial elasticity in an ambulatory setting. OBJECTIVE: The aim of this study was to determine whether there is a difference in blood ...
Malhotra Arun - - 2002
Normotensive and hypertensive patients develop peripheral arterial disease. The authors hypothesized that significant changes in lower extremity blood pressures occur upon standing, which could play a role in the pathogenesis of peripheral arterial disease. Forty-one subjects had blood pressure measurements performed in the arm and ankle in the supine and ...
Askew C D - - 2002
To shed light on the potential efficacy of cycling as a testing modality in the treatment of intermittent claudication (IC), this study compared physiological and symptomatic responses to graded walking and cycling tests in claudicants. Sixteen subjects with peripheral arterial disease (resting ankle: brachial index (ABI) < 0.9) and IC ...
Pedersen Karen M - - 2002
OBJECTIVE: To determine accuracy of an oscillometric blood pressure monitor used over a wide range of pressures in anesthetized cats. DESIGN: Prospective study. ANIMALS: 6 healthy cats. PROCEDURE: 4 female cats and 2 male cats that weighed 2.7 to 4.5 kg (5.9 to 9.9 lb) and were 2 to 8 ...
Aboyans V - - 2002
BACKGROUND: Ankle-arm index (AAI) is commonly used in epidemiological studies on peripheral arterial disease but its mode of calculation varies throughout the literature. We aimed to study the variance of the different measurements required to calculate the AAI according to different formulas, in order to find out the best way ...
Nascimento M C V A - - 2002
The progressive behavior of the blood pressure of term newborns during the first week of life was assessed by the simultaneous use of oscillometric and Doppler methods. A total of 174 term neonates born at the Municipal Hospital Odilon Behrens in Belo Horizonte, from March 1996 to February 1997, were ...
Tanaka Gohichi - - 2002
A near-infrared finger photoplethysmogram adopting a wavelength of 810 nm provides data pertaining to the pulsatile a.c. component of finger blood flow (delta I) superimposed on the transmitted d.c. components in a normal ( I: tissue plus blood) and an ischaemic circulatory state ( I(t): tissue only). Simultaneous recording of ...
Vanmolkot F H - - 2002
OBJECTIVE: To compare the sensitivity of three non-invasive techniques for detecting serotonin (5-HT)(1B/1D)-receptor agonist-induced peripheral vascular effects in humans: the measurement of (1) systolic (SBP) and diastolic (DBP) blood pressures, (2) dorsal hand vein (DHV) diameter and (3) toe-arm systolic blood pressure gradient (DeltaSBP(toe-arm)). METHODS: A double-blind, placebo-controlled, three-way, cross-over ...
Eckert Siegfried - - 2002
BACKGROUND AND DESIGN: In order to evaluate the accuracy of continuous, non-invasive blood pressure measurements in the finger during stress, blood pressure was measured in six patients with a Portapres Model 2 during increasing levels of bicycle exercise, using simultaneously registered intra-aortic (aortic arch) pressure as a reference. METHODS: Blood ...
Lane Deirdre - - 2002
OBJECTIVE: To determine whether there is significant disparity in blood pressure between the two arms. DESIGN: Prospective, observational study. SETTING: One general hospital in Birmingham, England. PARTICIPANTS: Four hundred participants [age 56.3 +/- 19.7 years (mean +/- SD), 50% male] were recruited from staff and patients. Simultaneous bilateral blood pressure ...
Smulders Yvo M - - 2002
BACKGROUND: Guidelines for office blood pressure reading techniques do not warn us about the possibility that patients may clench their fist during cuff-inflation. It is unknown how often patients do this, and what effect it has on measured blood pressure readings. DESIGN AND METHODS: We registered double blood pressure readings ...
Armstrong Robin S - - 2002
Errors in measuring blood pressure may have significant impact on the investigation and treatment of patients. Errors arise from faults in measurement technique or the equipment used. In Australia, blood pressure measurement technique is taught to nurses during their undergraduate education and may not be reviewed again. This observational, descriptive ...
Ali S - - 2002
It is well established that numerous errors, biases and omissions in recording blood pressure exist. This study had two objectives. Firstly, to measure the accuracy of sphygmomanometers used in general practice and secondly to assess digit bias in blood pressure recording. This study was carried out in the then Northfield ...
Netea R T - - 2002
AIMS: World Health Organization (WHO) guidelines recommend that the blood pressure (BP) should be routinely measured in sitting or supine followed by standing position, providing that the arm of the patient is placed at the level of the right atrium in each position. The aim of our study was to ...
Lee J Y - - 2002
Blood pressure measurement in the finger artery offers some advantages compared with that in the brachial artery. However, volume oscillometric signals obtained from finger artery measurement are often influenced by motion artefact due to respiration, speaking, involuntary or voluntary movement, etc. In this paper, we developed a digital envelope detector ...
Pickering Thomas G - - 2002
The gold standard for clinical blood pressure measurement continues to be readings taken by a physician using a mercury sphygmomanometer, but this is changing as mercury is gradually being phased out. The oscillometric technique, which primarily detects mean arterial pressure, is increasingly popular for use in electronic devices. Other methods ...
Kerner T - - 2002
BACKGROUND: For monitoring of arterial blood pressure (ABP) during whole body hyperthermia (WBH) different methods have been recommended. This investigation was performed to evaluate the agreement of invasive measurements at various sites, and to compare invasive and non-invasive methods of ABP monitoring under conditions of a heat-induced extreme vasodilation. METHODS: ...
Anderson I - - 2002
OBJECTIVE: Ankle brachial pressure index (ABPI) aids the diagnosis of leg ulcer aetiology, although there is potential for patient anxiety or discomfort when the cuff is placed over an ulcerated ankle. This study aimed to ascertain any differences in systolic pressure if the cuff is positioned proximal to the ankle ...
Leder U - - 2002
Doppler pressure measurements are a useful diagnostic tool in peripheral arterial obstructive disease. The aim of our study was to determine whether these pressure values do predict the degree of impairment of the walking capacity in symptomatic patients. We compared the claudication distances (CDI: initial claudication distance, CDA: absolute claudication ...
Schulze Matthias B - - 2002
The procedures for obtaining blood pressure measurements, and their quality of performance, should be similar between epidemiological studies to allow a valid comparison of blood pressure distribution and prevalence of hypertension between study populations. However, considerable methodological variation currently exists as there are several international guidelines on blood pressure measurement ...
Pesola Gene R - - 2002
OBJECTIVE: If there is a significant dichotomy between bilateral systolic blood pressure determinations in both arms in hypertensive individuals, it is often taken as a sign of underlying pathology. The primary objective was to determine what the normal variation might be for a significant difference between blood pressures in both ...
Toussaint Huub M - - 2002
PURPOSE: It is currently held that propulsion in human front crawl swimming is achieved by lift and drag forces predominantly generated by the hands. Calculation of these propulsive forces relies on the quasi-steady assumption that the fluid dynamic behavior of a hand model in a flow channel (constant velocity and ...
Yazigi A - - 2002
BACKGROUND: Radial arterial pressure underestimates the pressure in the aorta in several clinical situations. A central-to-radial pressure gradient was attributed to intense vasodilation. The aim of this study was to evaluate the accuracy of radial pressure monitoring during controlled hypotension achieved with profound arterial vasodilation. METHODS: Ten patients with ASA ...
Emerick D R - - 2002
The arm is the traditional site for application of an oscillometric non-invasive blood pressure (NIBP) cuff This study, which compares upper arm NIBP to wrist NIBP, involved 510 same arm sequential paired blood pressure (BP) measurements in 85 volunteers. Wrist NIBP consistently overestimated mean arterial, systolic and diastolic pressure by ...
Mattoo Tej K - - 2002
Selection of an arm cuff of the right size is necessary for accurate measurement of blood pressure (BP). Incorrect measurement can result either in unnecessary investigations, treatment, and follow-up for the mistaken diagnosis of hypertension, or no treatment for hypertension in individuals mistakenly thought to have normal BP. This is ...
Bovenzi Massimo - - 2002
OBJECTIVES: To compare the accuracy of several finger systolic blood pressure indices (FSBPIs) for the diagnosis of cold-induced Raynaud's phenomenon in vibration-exposed worker groups with different prevalences of vibration-induced white finger (VWF). METHODS: The finger systolic blood pressure (FSBP) in a test finger at 10 degrees C as a percentage ...
Holland Tom - - 2002
The ankle brachial index is one of many tests that can be used to indirectly assess lower extremity peripheral blood flow. This article reviews ankle brachial index technique and presents some of its applications for clinicians and researchers based on a literature review. The ankle brachial index is relatively simple ...
Monahan Kevin D - - 2002
Head-down rotation (HDR), which activates the vestibulosympathetic reflex, increases leg muscle sympathetic nerve activity (MSNA) and produces calf vasoconstriction with no change in either cardiac output or arterial blood pressure. Based on animal studies, it was hypothesized that differential control of arm and leg MSNA explains why HDR does not ...
Jin R Z - - 2001
OBJECTIVE: To compare the conventional sphygmomanometer with the semiautomated Dinamap 8100 (Critikon, Tampa, FL, USA) for the measurement of blood pressure in prepubertal children with insulin-dependent diabetes mellitus. METHODOLOGY: Blood pressure was measured using both methods in 61 prepubertal children (aged 8-13 years) on 189 occasions over 4 years. The ...
Hertel Jay - - 2001
OBJECTIVE: To identify subjects' changes in postural control during single-leg stance in the 4 weeks after acute lateral ankle sprain. DESIGN AND SETTING: We used a 2 x 2 x 3 (side-by-plane-by-session) within-subjects design with repeated measures on all 3 factors. All tests were performed in a university laboratory. SUBJECTS: ...
Tansey E - - 2001
BACKGROUND: Devices that record from the finger have potential practical advantages for home monitoring of blood pressure. However, digital arterial pressure may vary substantially from that in the brachial artery, due to the influence of peripheral wave reflection. AIMS: (1) To compare digital arterial pressure, as measured with the Omron ...
Archer L J - - 2001
Automated non-invasive arterial blood pressure measurements are made frequently during anaesthesia. Conscious patients often find the measurement uncomfortable. The tissues under the cuff can suffer trauma such as skin creasing, blistering, petechial haemorrhages and even nerve damage. We placed soft padding between the blood pressure measurement cuff and the skin ...
Raamat R - - 2001
Two different methods were studied for non-invasive beat-to-beat finger mean arterial pressure (MAP) measurement in 14 healthy volunteers during local arm cooling to 17 degrees C. Fingertip skin blood flow was recorded by a laser Doppler instrument. The difference between the oscillometric beat-to-beat blood pressure measurement device (UT9201) and volume ...
Cassidy P - - 2001
OBJECTIVES: To investigate whether there are inter-arm blood pressure differences that are of clinical importance to general practice. DESIGN AND SETTING: Pragmatic study with randomised order of use of left or right arm carried out in routine surgeries in an inner city and suburban general practice. SUBJECTS: There were 237 ...
Koutek B - - 2001
Validity of five models suggested for expressing the relationship between vapour pressures and GC retention times measured on a non-polar capillary column were tested on a common set of compounds [five homologous series of the type H-(CH2)n-Y, where Y denotes Cl, Br, CHO, OCOCH3 and COOCH3, and n varies from ...
Manning B J - - 2001
BACKGROUND: Investigation of lower extremity pain is compromised by comorbid disorders that may interfere with conventional testing. AIMS: To compare pedal ergometry with conventional treadmill testing. METHODS: A prospective study was performed where patients presenting with a diagnosis of intermittent claudication were assessed by both methods of testing. RESULTS: Of ...
Rotch A L - - 2001
OBJECTIVE: To determine the accuracy of three automatic monitors (arm, wrist, finger) for blood pressure measurement manufactured by Omron compared with a standard mercury sphygmomanometer. PRIMRY END POINT: Difference in the mean blood pressure readings from each monitor; the secondary end point was difference in pulse readings. DESIGN: A single-visit, ...
McVicker J T JT Clinical Medical Officer, Career Grade Trainee, Women's Health Directorate, North Mersey Community NHS Trust, 40-46 Dale Street, Liverpool, - - 2001
To assess the accuracy and consistency of blood pressure measurement techniques among individual clinicians and the reliability of the equipment in everyday use. Professional survey. The senior nurse at each of 28 clinics was sent two questionnaires about equipment, and 55 health professionals were sent a questionnaire about their measurement ...
Prisant L M - - 2001
OBJECTIVE: The aim of this study was to assess the accuracy of sequential same arm blood pressure measurement by the mercury sphygmomanometer with the oscillometric blood pressure measurements from a device that also determines arterial elasticity. METHODS: A prospective, multicentre, clinical study evaluated sequential same arm blood pressure measurements, using ...
Yarows S A - - 2001
BACKGROUND: There have been few reports studying the necessary interval between blood pressure measurements, after the initial rest period. METHODS: Blood pressure was measured in 50 patients using the conventional oscillometric technique (COT) and the rapid oscillometric technique (ROT). RESULTS: The difference between COT and ROT was -1.1 / -0.1 ...
Campbell N R - - 2001
OBJECTIVE: Self-measurement of blood pressure is commonly performed by those persons with hypertension and is advocated in many national hypertension guidelines. We examined accuracy of readings, patient knowledge, and preparation for readings, technique and equipment. DESIGN: The study was a prospective observational design. Sixty-nine hypertensive patients were recruited from a ...
Raamat R - - 2001
Blood pressure recordings obtained by the volume clamp method (Finapres monitor, Ohmeda, USA) were compared with measurements by using a novel modification of the oscillometric method (UT9201 beat-to-beat monitor, University of Tartu, Estonia). Step changes in total peripheral resistance were introduced in 11 healthy volunteers by rapid inflation to the ...
Keele-Smith R - - 2001
The purpose of this study was to determine if blood pressure measurement is affected by the leg crossed at the knee as compared with feet flat on the floor in a well-senior population. Participants (N = 110) either had their blood pressure measured with feet flat first and then crossed ...
Abraham P - - 2001
This study defined how ankle arterial blood pressure measurements should be analyzed for the detection of moderate arterial disease (asymptomatic while walking). We used external iliac artery endofibrosis as a unique model of an isolated moderate arterial lesion, the role of which in exercise-related pain can be surgically proven. Patients ...
Jönsson B - - 2001
The objective of the study was to evaluate the validity of oscillometric systolic ankle pressure in symptomatic leg arterial occlusive disease. Ankle pressure measurements using oscillometric curves obtained using a standard 12-cm cuff with a specially designed device for signal processing were validated against the continuous wave (CW) Doppler technique. ...
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