Search Results
Results 351 - 400 of 1272
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Tatara Naoe N NTT Microsystem Integration Laboratories, 3-1, Morinosato Wakamiya, Atsugi, Kanagawa, Japan. - - 2007
Hypertension is a world wide issue, and it is now generally accepted that its diurnal pattern has a prognostic significance. The purpose of this study is to develop a novel blood pressure (BP) monitoring device that causes less discomfort and is less disruptive of users' daily activities than conventional ambulatory ...
Ryou M - - 2007
BACKGROUND: The transgastric approach is currently being studied as a potentially less invasive alternative to conventional laparoscopy for intra-abdominal surgery. A major obstacle to overcome is the closure of the transgastric incision in a rapid, reproducible, and safe manner. The effectiveness of various techniques for gastrotomy closure were compared by ...
Sarikcioglu Levent - - 2007
It is often difficult to compare results obtained by different investigators on nerve compression injuries, owing to differences in method of pressure application and noncomparable pressure levels. In the present study, we described a new method to crush the optic nerve by using a specially designed and commercially available device. ...
Angeli Fabio - - 2006
OBJECTIVES: To determine the accuracy of the A&D UB-511 (UB-512) oscillometric wrist-cuff device for self-measurement of blood pressure, the only difference between the two devices being the size of storage memory. METHODS: Device evaluation was performed according to the modified British Hypertension Society protocol released in 1993. Eighty-five study participants ...
Grossardt Brandon R - - 2006
OBJECTIVE: Current guidelines stress the need for more than one measurement of blood pressure in the hypertensive patient. The frequency with which the first blood pressure significantly exceeds subsequent blood pressures (alerting response) is unknown. Participants in a hypertension treatment trial before initiation of therapy were included in post-hoc analyses ...
Shiga Naoko - - 2006
Direct hemoperfusion through a network of immobilized polymyxin B fibers is used for the treatment of septic shock, but the mechanism underlying the clinical benefits remains unclear. The aims of the present study were to assess the actions of direct hemoperfusion through immobilized polymyxin B fibers on effects of exogenous ...
Li Li - - 2006
OBJECTIVE: To determine the accuracy of the BPW810 blood pressure monitor developed by IDT Technology Limited, according to the international protocol of the European Society of Hypertension. DESIGN: The international protocol is divided into two phases: the first phase is performed on 15 selected participants and, if the device passes ...
Brokelman Walter J A - - 2006
BACKGROUND: Peritoneal fibrinolysis is important in peritoneal wound healing processes and adhesion formation. The peritoneal fibrinolytic response to laparoscopy is merely unknown. In the present study we investigate the effect of short-term laparoscopy on the peritoneal fibrinolytic response and the influence of intra-abdominal pressure, light intensity and choice of dissection ...
Wong Sik-Nin - - 2006
AIM: To validate Welch-Allyn Vital Sign Monitor, Dinamap Procare-120 and Datascope Accutorr Plus against auscultatory mercury sphygmomanometer in children aged 5-15 years old according to the International Protocol of European Society of Hypertension adapted for validation in children. METHOD: One hundred and thirty two children were studied (44 for each ...
Reinders Annemarie - - 2006
OBJECTIVE: Inaccurate blood pressure measurement has serious implications for both the patient and the health service. It results in inappropriate treatment and underestimation of clinical risk. Few automated devices have been shown to be accurate when compared with mercury sphygmomanometery. The DINAMAP ProCare has been developed to be accurate compared ...
Tansatit Tanvaa - - 2006
OBJECTIVE: The purpose of the present study was to compare the bursting pressure of large arteries sealed with hand made bipolar vessel sealer (BVS) using flexible electrosurgical system (HemoSaccab) and the BiClamp. MATERIAL AND METHOD: Sixteen common carotid arteries from a fresh cadaver were sealed using BVS and BiClamp 4 ...
Duncan Brian W - - 2006
Mechanical support of the failing myocardium has become standard therapy for adults who fail medical management. Historically, there have been fewer options for children with heart failure. Extracorporeal membrane oxygenation and centrifugal pump-based ventricular assist devices have been the most commonly used circulatory support modalities for pediatrics in the United ...
Greenland H P - - 2007
A prospective randomised controlled study was performed in order to study the effectiveness of a device designed to reduce the variability in intra-abdominal pressures generated by individuals performing the Valsalva manoeuvre. One hundred women were recruited to take part in the project which compared a traditional Valsalva manoeuvre following standardised ...
Stohler C S - - 2007
A hand-held, servo-controlled tissue palpation device (SCPD) was developed to measure the pressure-pain characteristics of human tissue for disease states linked to altered pressure-pain sensitivity. The design was based on an adaptive controller using force feedback to reach and maintain a desired force in spite of movements of the operator's ...
Rigau Jordi - - 2006
BACKGROUND: Automatic positive airway pressure (APAP) devices are increasingly being used in patients with obstructive sleep apnea. Some APAP devices present an unstable behavior when subjected to some events or artifacts. The aims were to develop a bench model capable of reproducing real flow, snoring, and obstructive patterns and to ...
Stergiou George S - - 2006
BACKGROUND: Limited evidence exists on the accuracy of oscillometric devices for blood pressure measurement in children. This study validated the Omron 705 IT monitor (Omron Healthcare Europe BV, Hoofddorp, The Netherlands) in normotensive children and adolescents. METHODS: Simultaneous blood pressure measurements were taken by two observers (connected mercury sphygmomanometers) four ...
Lofaso Frédéric - - 2006
STUDY OBJECTIVE: Automatic continuous positive airway pressure (CPAP) devices that adjust the pressure delivered to the patient are now available to treat sleep-disordered breathing. Sophisticated auto-CPAP devices can detect and correct flattened inspiratory flow contours (FIFCs) associated with subtle upper airway obstruction. However, evaluations of their performance are made difficult ...
Burkhoff Daniel - - 2006
BACKGROUND: The mortality of cardiogenic shock (CGS) remains high despite currently available pharmacological and mechanical treatment options. The standard of care in medically refractory situations has been the insertion of an intra-aortic balloon pump. The purpose of this study was to investigate the feasibility, safety, and hemodynamic impact of the ...
Fedel Mariangela - - 2006
The need of health costs control has prompted the reuse of devices originally manufactured for single use only. To assess reprocessing feasibility of disposable medical devices, hygienic, technical, and functional aspects must be taken into account in addition to economical, ethical, and legal implications. This study aims to characterize coronary ...
Verdecchia Paolo - - 2006
OBJECTIVES: We tested the accuracy of the UA-705 blood pressure semi-automatic monitor. METHODS: Device evaluation was performed according to the modified British Hypertension Society protocol released in 1993. Eighty-five patients with characteristics outlined in the British Hypertension Society protocol were recruited among those attending our out-patient clinic. Sequential readings were ...
Pang Tony C Y - - 2006
BACKGROUND: To determine the extent of discrepancies between ambulatory blood pressure measurement (ABPM) devices and mercury sphygmomanometry in pre-use testing in routine clinical practice and whether such discrepancies are associated with patient characteristics and subsequent 24-h ABPM readings. METHODS: A retrospective analysis of a database of 683 prospectively collected records ...
Payne Marielle - - 2006
PURPOSE: To determine the vacuum pressure generated by 4 phacoemulsification devices measured at the phacoemulsification tip. SETTING: University ophthalmology department. METHODS: The effective vacuum pressures generated by the Sovereign (AMO), Millennium (Bausch & Lomb), Legacy AdvanTec (Alcon Laboratories), and Infiniti (Alcon Laboratories) phacoemulsification machines were measured with a device that ...
Mair Dieudonne A - - 2006
An injection molding process for the fabrication of disposable plastic microfluidic chips with a cycle time of 2 min has been designed, developed, and implemented. Of the sixteen commercially available grades of cyclo-olefin copolymer (COC) that were screened for autofluorescence and transparency to ultraviolet (UV) light, Topas 8007 x 10 ...
Arshak K - - 2006
In this work, the pressure sensing properties of polyethylene (PE) and polyvinylidene fluoride (PVDF) polymer films were evaluated by integrating them with a wireless data acquisition system. Each device was connected to an integrated interface circuit, which includes a capacitance to frequency converter (C/F) and an internal voltage regulator to ...
Amadasun, FE; Department of ...
The study compared two non-invasive methods of blood pressure measurements used in the anaesthetic management of patients, the conventional sphygmomanometric and the oscillometric methods. One hundred adult in-patients were involved, and 400 blood pressure measurements were done with the two devices. The sphygmomanometric measurements were higher in systolic, diastolic and ...
Shimoda Keiji - - 2006
The pressure-induced structural evolutions of CaSiO(3)-MgSiO(3) glasses have been examined by means of molecular dynamics simulation. Our calculations revealed that Si coordination remained unchanged up to 15 GPa, while modifier cations caused significant changes in the short-range order structure. In the present study, we conclude that the main compression mechanisms for ...
Orbay Hakan - - 2006
Cessation of blood flow to the extremity improves the comfort of the surgeon. So pneumatic tourniquets are commonly used to obtain a bloodless field during upper- and lower-extremity surgery despite the several problems that tourniquet pressure may lead to. In this paper, we present our clinical experiences with a new ...
Maiss J - - 2006
BACKGROUND AND STUDY AIMS: Hemoclip therapy is a well-established procedure in the treatment of gastrointestinal bleeding. Although new products are provided periodically by the industry, comparative investigations are lacking. We compared two different hemoclip devices in an experimental setting, assessing them using objective hemostatic parameters. MATERIALS AND METHODS: We compared ...
Topouchian Jirar A - - 2006
BACKGROUND: Two electronic devices for self-measurement of blood pressure - a brachial monitor, the Omron M6, and a wrist monitor, the Omron R7 - were evaluated in two separate studies according to the International Protocol of the European Society of Hypertension. DESIGN: The International Validation Protocol is divided into two ...
Wilton Anja - - 2006
OBJECTIVE: To assess the clinical accuracy of a non-mercury digital auscultatory device (PMS Mandaus) with manual pressure registration in an adult population. METHODS: The accuracy of the device was assessed by predefined criteria (European Society of Hypertension protocol) in 33 study participants recruited from among patients and staff in a ...
Stergiou George S - - 2006
OBJECTIVE: Current guidelines recommend that only validated devices for blood pressure measurement should be used. This study presents the validation results of the Microlife BPA100 Plus monitor for self-home blood pressure measurement, according to the European Society of Hypertension International Protocol. METHODS: Fifteen study participants were included in phase 1 ...
Stang Andreas - - 2006
Many surveys and cohort studies have used a random-zero sphygmomanometer blood pressure device (RZS) to measure subjects' blood pressure and to assess the value of blood pressure in predicting cardiovascular events. Recent studies used automated oscillometric blood pressure devices (AODs) that systematically measure higher blood pressure values than RZSs do, ...
Chen Chia-Shyun - - 2006
A curve-matching method is developed for the analysis of depth-dependent pressure head responding to a slug test in a highly permeable aquifer. The depth dependency is due to the fact that the pressure transducer is placed at depth relatively far from the initial water level. The Springer and Gelhar solution ...
Pamboukian Salpy V - - 2006
The syndrome of heart failure is characterized by symptoms that are relatively insensitive and nonspecific. Physical diagnosis may be unreliable even in the hands of experienced clinicians despite the presence of significantly elevated filling pressures or a significantly depressed cardiac output. Over the past decade, the implantable hemodynamic monitor (IHM) ...
Kametas N A - - 2006
Mercury-independent devices are increasingly being used in clinical practice as mercury will soon be removed from clinical use as a result of environmental, health and safety concerns. The aim of this study was to evaluate the accuracy of a portable aneroid device in an adult population at high altitude by ...
Nolly Héctor - - 2006
BACKGROUND: Home blood pressure monitoring has been increasingly encouraged as a supplement to measurements in the clinic in the 2003 European Society of Hypertension-European Society of Cardiology and in the Seventh Joint National Committee guidelines. Before marketing, however, blood pressure measuring devices for self-blood pressure monitoring should be independently validated. ...
Kobalava Zhanna D - - 2006
OBJECTIVE: To perform validation for an arm-type oscillometric TM-2655 device (A&D Company Ltd, Tokyo, Japan) for blood pressure measurement according to the British Hypertension Society protocol. METHODS: Eighty-five study participants (33 men and 52 women) were included in the study. Mean age was 52.9+/-15.0 years, systolic blood pressure range was ...
Wang Xingwei - - 2006
An all-fused-silica pressure sensor fabricated directly onto a fiber tip of 125 microm diameter is described. Simple fabrication steps include only cleaving and fusion splicing. Because no chemical processes are involved, the fabrication is easy, safe, and cost effective. Issues in sensor design and loss analysis are discussed. The sensor ...
Amoore John N - - 2006
INTRODUCTION: A simulator has been developed that enables previously recorded clinical oscillometric waveforms to be regenerated for testing oscillometric non-invasive blood pressure measurement devices. Two non-invasive blood pressure devices were evaluated using the simulator with its database of 243 waveforms, to assess the value of a simulator for such evaluations. ...
Myers Martin G - - 2006
OBJECTIVE: To compare blood pressure measurements taken in routine clinical practice using an automated recorder, the BpTRU (VSM MedTech Ltd, Coquitlam, Canada), with readings taken by a conventional mercury sphygmomanometer. METHODS: Fifty consecutive patients [28 women, 22 men; mean (+/-SD) age 62+/-16 years] referred to a specialist for management of ...
Altunkan Sekip - - 2006
OBJECTIVE: The market for wrist devices for self-measurement is growing and these devices are becoming popular among the patients. Despite widespread use of these devices, there is limited published evidence for their accuracy and reliability in the different patient groups. The objective of this study was to evaluate the accuracy ...
Altunkan Sekip - - 2006
OBJECTIVE: Wrist blood pressure devices are becoming popular for the self-measurement of blood pressure. Despite widespread use of these devices, there is limited published evidence for their accuracy and reliability. In this study, we assessed the accuracy of the Omron 637IT wrist blood pressure device against the mercury sphygmomanometer in ...
Kim Dongshin - - 2006
The pressure required to drive flow through a microfluidic device is an important characteristic of that device. We present a method to measure the flow rate through microfluidic components and systems, including micropumps and microvalves. The measurement platform is composed of two pressure sensors and a glass tube, which provides ...
Schilling Susan - - 2006
BACKGROUND: Intraluminal occlusion is common in children with central venous catheters (CVCs). Although multiple factors predispose CVCs to occlusion, reflux of blood is frequently implicated. We hypothesized that use of either a single-valve or positive-pressure-valve needleless connector device would reduce CVC occlusion rates in comparison to a standard device. We ...
- - 2006
The Food and Drug Administration (FDA) is classifying the implantable intra-aneurysm pressure measurement system into class II (special controls). The special control that will apply to the device is the guidance document entitled "Class II Special Controls Guidance Document: Implantable Intra-Aneurysm Pressure Measurement System." The agency is classifying the device ...
Swan L - - 2006
BACKGROUND: Device closure of an atrial septal defect (ASD) results in symptom-reduction, right heart remodelling and lower pulmonary artery pressures. However it is unclear if there is a chronological limit to these benefits and whether device closure is safe in elderly subjects. The aim of this study was, therefore, to ...
Yoshida K - - 2006
OBJECTIVES: The aim of this study was to assess the strength (pressure resistance) and histological findings of aortic anastomoses performed using a circular stapling device. MATERIALS AND METHODS: A circular stapling device was used for anastomosing a porcine aorta and a Dacron graft. The maximum pressure resistance of the anastomotic ...
Partsch Hugo - - 2006
BACKGROUND: Interface pressure and stiffness characterizing the elastic properties of the material are the parameters determining the dosage of compression treatment and should therefore be measured in future clinical trials. OBJECTIVE: To provide some recommendations regarding the use of suitable methods for this indication. METHOD: This article was formulated based ...
Campos Javier H - - 2006
BACKGROUND: Lung isolation is accomplished with a double-lumen tube or a bronchial blocker. Previous studies comparing lung isolation methods were performed by experienced anesthesiologists in thoracic anesthesia. Therefore, the results of these studies may not be relevant to the anesthesiologist with limited experience. This study compared the success rates of ...
Rioufol Gilles - - 2006
Thrombus removal by aspiration is one of the adjunctive techniques used to avoid embolization during PCI for acute myocardial infarction. Numerous devices are now available, but little is known about the mechanical rationale used in comparing them. The aim of the present study was to determine parameters to obtain optimal ...
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