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Descatoire Aurélien - - 2009
Numerous studies on the development of new biofeedback device conception have already been undertaken. The devices are used for some methods of compensation for the data loss on sensors set. Patients with loss of protective pain sensation are unable to modify their gait when abnormal and excessive plantar pressure occurs. ...
Kalsi Henna - - 2009
A 75-year-old woman presented with a two-month history of progressive dyspnea on exertion. On physical examination, her blood pressure was 148/90 mmHg, jugular venous pressure was 10 cmH(2)O with a prominent V wave, right ventricular heave was present and she had a systolic murmur at the right upper sternal border ...
Erdem Dilek Gurgenyatagi - - 2009
BACKGROUND/AIMS: The aims of this study are to assess the reasons of using sphygmomanometers at pharmacies and to evaluate their accuracy. METHODS: 135 devices (118 aneroid, 1 mercury, and 16 automated) from 125 pharmacies (located in Samsun city center) were included in the study. A non-randomized, cross-sectional design was used ...
Ricco Carolina H - - 2009
OBJECTIVE: To evaluate the feasibility and functionality of intra-carotid wireless device implantation in ponies, and to investigate its short-term complications. STUDY DESIGN: Prospective preliminary study. ANIMALS: Five mixed breed, adult, intact male ponies weighing 104 +/- 28.8 kg (mean +/- SD) underwent surgery. Arterial blood pressure data were continuously collected ...
Huetteman Daniel A - - 2009
The ability to monitor and record precise blood pressure fluctuations in research animals is vital to research for human hypertension. Direct measurement of blood pressure via implantable radio telemetry devices is the preferred method for automatic collection of chronic, continuous blood pressure data. Two surgical techniques are described for instrumenting ...
Otto Jens - - 2009
BACKGROUND: Piezoresistive pressure measurement technique (PRM) has previously been applied for direct IAP measurement in a porcine model using two different devices. Aim of this clinical study was to assess both devices regarding complications, reliability and agreement with IVP in patients undergoing elective abdominal surgery. METHODS: A prospective cohort study ...
Ngo Adeline Su-Yin - - 2009
Intraosseous (IO) access is an alternative to conventional intravenous access. We evaluate the use of the EZ-IO as an alternative vascular access for patients in the emergency department. A non-randomized, prospective, observational study was performed in adults using the EZ-IO powered drill device. Twenty-four patients were recruited. There were 35 ...
Bianchi Federico F Department of Biomedical Engineering, Politecnico di Milano, Milano, - - 2009
A falls detection system, employing a Bluetooth-based wearable device, containing a triaxial accelerometer and a barometric pressure sensor, is described. The aim of this study is to evaluate the use of barometric pressure measurement, as a surrogate measure of altitude, to augment previously reported accelerometry-based falls detection algorithms. The accelerometry ...
Cosseddu Piero P University of Cagliari Department of Electric and Electronic Engineering, Piazza d'Armi 09123 Cagliari, - - 2009
In this paper we propose totally flexible organic field effect transistors (OFETs) assembled on plastic films as sensors for mechanical variables. In the first part, mechanical sensors for pressure and bending detection are presented. A sharp and reversible sensitivity of the output current of the device to an elastic deformation ...
Yan Iris R F IR Joint Research Center for Biomedical Engineering (JCBME), Dept. of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, - - 2009
This paper proposes one of the unique requirements in the validation protocol of the IEEE P1708 standard in assessing wearable cuff-less blood pressure (BP) measuring devices. Based on principles that are different from that of the conventional cuff-based devices, the cuff-less BP measurement approaches often require an individual calibration procedure. ...
de Greeff Annemarie - - 2008
OBJECTIVE: To assess and develop an accurate blood pressure measurement device for use in low resource settings and by untrained staff, according to the World Health Organisation guidelines. METHODS: Ninety-nine adults were recruited to validate the device according to the International Protocol of the European Society of Hypertension. All participants ...
Kiers H D - - 2008
Mean arterial pressure (MAP) is often used as an index of overall blood pressure. In recent years, the use of automated oscillometric blood pressure measurement devices is increasing. These devices directly measure and display MAP; however, MAP is often calculated from systolic blood pressure (SBP) and diastolic blood pressure (DBP) ...
Jones Deborah P - - 2008
OBJECTIVE: We measured ambulatory blood pressure using the AM5600 in children and adolescents participating in a research study to assess the relationship of blood pressure to risk factors for cardiovascular disease. Although the use of this monitor has been previously reported in adults, it has not been validated in pediatric ...
Hon L Q - - 2010
Haemostatic devices can be categorised according to their mechanism of action into three main types; namely pressure devices, topical haemostatic pads and vascular closure devices (VCD). Of these three categories, it is the development of VCDs that revolutionised management of endovascular procedures. Currently available VCDs fall into three major classes, ...
Frank M - - 2009
INTRODUCTION: Vole captive bolt devices are powder actuated spring guns that are used as a pest control mean. After having triggered the explosion of the blank cartridge by touching a metal ring around the muzzle, the vole is killed by the massive propulsion of the gas jet. Improper use and ...
Box Geoffrey N - - 2009
PURPOSE: Sealing the lymphatic vessels during abdominal and pelvic surgery is important to prevent the leakage of lymphatic fluid and its resultant sequelae. To our knowledge we compared for the first time the quality of lymphatic sealing by each of 4 commonly used laparoscopic dissection devices. MATERIALS AND METHODS: A ...
Aufderheide Tom P TP Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, USA. - - 2008
The purpose of this study is to: 1) describe a newly mechanism of blood flow to the brain during cardiopulmonary resuscitation using the impedance threshold device in a piglet model of cardiac arrest, and 2) describe the survival benefits in humans of applying all of the highly recommended changes in ...
Manasnayakorn S - - 2009
BACKGROUND: Hand access devices in hand-assisted laparoscopic surgery depend on compression pressure to prevent air leakage. Surgeons frequently experience hand ache during surgery. This study aimed to test whether the pressure with such a device affects the microvascular function of the hand. METHODS: Eight healthy volunteers participated in this experimental ...
Turcott Robert G - - 2008
Pacemakers and implantable defibrillators presently operate without access to hemodynamic information. If available, such data would allow tailoring of delivered therapy according to perfusion status, optimization of device function, and enhancement of disease monitoring and management. A candidate method for hemodynamic sensing in these devices is photoplethysmography (PPG), which uses ...
Timms Daniel - - 2008
The BiVACOR is a novel rotary Biventricular Assist Device (BiVAD) undergoing development to treat global end-stage heart failure. The design includes left and right vanes positioned on a shared rotating hub to form a double-sided magnetically and hydrodynamically suspended centrifugal impeller. The performance of the device was assessed in a ...
Chen Han-E - - 2008
OBJECTIVE: This study aimed to evaluate the accuracy of the automated Health & Life oscillometric upper arm blood pressure monitor HL868BA for home blood pressure monitoring according to the European Society of Hypertension International Protocol for blood pressure measuring devices in adults. METHOD: Systolic and diastolic blood pressures were sequentially ...
Lamberton Gregory R - - 2008
PURPOSE: The merits of laparoscopic sealing devices have been poorly characterized. The purpose of this study was to compare two bipolar sealing devices [LigaSure V (LS) and Gyrus PK (GP)], an ultrasonic device [Harmonic Scalpel ACE (HS)] and a novel device using nanotechnology [EnSeal PTC (ES)]. MATERIALS AND METHODS: The ...
Retterer S T - - 2008
Implantable electrode arrays capable of recording and stimulating neural activity with high spatial and temporal resolution will provide a foundation for future brain computer interface technology. Currently, their clinical impact has been curtailed by a general lack of functional stability, which can be attributed to the acute and chronic reactive ...
Ota Takeyoshi T Division of Cardiac Surgery, University of Pittsburgh, 200 Lothrop Street, PUH C-700, Pittsburgh, PA 15213, - - 2008
We have developed a novel miniature robotic device (HeartLander) that can navigate on the surface of the beating heart through a subxiphoid approach. This study investigates the ability of HeartLander to perform in vivo semiautonomous epicardial injections on the beating heart. The inchworm-like locomotion of HeartLander is generated using vacuum ...
Påhlsson H I - - 2008
OBJECTIVES: Modern guidelines for evaluation of leg ischemia in patients with diabetes and foot ulcer recommend toe blood pressure (TBP) measurements rather than the often unreliable ankle blood pressure (ABP). A drawback with TBP is the complicated measurement procedure, unsuitable the outpatient clinic. The aim of this study was to ...
Chen Cheng-Fu CF Department of Mechanical Engineering, University of Alaska Fairbanks, P.O. Box 755905, Fairbanks, AK 99775, USA. - - 2008
The capability of continuously sampling the extracellular fluid opens up a wide range of applications of microdialysis in biological, pharmaceutical, and clinical studies. Existing microdialysis, however, faces challenges in sampling analytes with fast clearance and limited diffusivity because sampling resolution is limited by device size. Size reduction in probes and ...
Ozerdem Ugur - - 2009
In this report we describe a practical procedure for measuring interstitial fluid pressure (IFP) using fiberoptic pressure transducers based on optical interferometry. Eight mice were used for subcutaneous IFP measurements and four mice for intramuscular IFP measurements with a FOBPS-18 fiberoptic pressure transducer. We used four mice for subcutaneous IFP ...
Greenberg Barry - - 2008
BACKGROUND: Prior investigations suggest that superimposing continuous flow on aortic flow (continuous aortic flow augmentation) produces vasodilation, cardiac unloading, and improved cardiac performance. METHODS AND RESULTS: We compared percutaneous continuous aortic flow augmentation (flow <or=1.5 L/min for up to 96 hours) plus medical therapy versus medical therapy alone by randomizing ...
de Greeff Annemarie - - 2008
Blood pressure measurement is an essential, poorly performed skill, traditionally undertaken through auscultation and use of a mercury sphygmomanometer. However, its exclusivity to the clinical environment has changed substantially over the last 20 years with the introduction of automated blood pressure devices. This simplified self-measurement method has enabled increased patient ...
Son Yoen-Ju - - 2008
The dry powder inhaler (DPI) has become widely known as a very attractive platform for drug delivery. Many patients have traditionally used DPIs to treat asthma and chronic obstructive pulmonary disease. Recently, the development of new DPIs for delivering therapeutic proteins such as insulin has been accelerated by patient demands, ...
Shi Yaocheng - - 2008
We present the design, fabrication, and measurement of an ultracompact directional coupler in InP/InGaAsP/InP. By utilizing the lag effect in the dry etching process, in one etch step, deeply etched asymmetric waveguides with a shallow groove in between are fabricated. This special property enhances the coupling efficiency for the directional ...
Wermelt Julius Z - - 2008
Pulsatile ventricular assist devices (VADs) are used in pediatric patients mainly as a bridge to heart transplantation. If severe respiratory failure occurs, extracorporeal membrane oxygenation (ECMO) is currently the treatment of choice. ECMO has the potential for severe complications. Interventional lung assist (iLA) devices, e.g., the Novalung, are used in ...
Fegley Allison J - - 2008
In an in vitro study, we determined the flow rates required to use selective orifices of multiorifice catheters. Saline was infused at rates between 1 and 360 mL/h through Portex and Braun 20-gauge multiorifice catheters using Baxter, Abbott Laboratories, and Alaris infusion pumps. The numbers of orifices used via infusion ...
Boot J D - - 2008
BACKGROUND: Exhaled nitric oxide (eNO) is an established, noninvasive biomarker of active airway inflammation in (atopic) asthma. Treatment with anti-inflammatory therapy, such as inhaled corticosteroids, effectively decreases eNO levels. The NIOX MINO (MINO) is a hand-held, relatively inexpensive, electrochemical device that has been shown to yield comparable eNO measurements to ...
Grim Clarence E - - 2008
The Omron HEM-711 DLX home Blood pressure monitor was tested using the European Society of Hypertension International Protocol in 33 patients. The average error was 0.9+/-5.2 (SD) (range: -12 to 10 mmHg)/-0.8+/-5.6 (-19 to 8). It can be recommended for use by patients. With all automatic devices it is, however, ...
Staats C - - 2008
Physiological signal simulators are often used to conduct validation studies of commercially available devices such as oscillometric non-invasive blood pressure (NIBP) monitors. Numerous assessment studies have been conducted using simulators to validate commercial NIBP monitors. While there are several simulators commercially available to evaluate oscillometric NIBP devices, currently there are ...
van Ramshorst G H - - 2008
The importance of measuring intra-abdominal pressure (IAP) has increased since the negative effects of sustained increased IAP, also known as intra-abdominal hypertension (IAH), have become known. The relation between IAP and abdominal wall tension has been included in several reports. We have developed a device to measure abdominal wall tension ...
Stergiou G S - - 2008
An appropriate cuff according to the individual's arm circumference is recommended with all blood pressure (BP) monitors. An electronic device for home monitoring has been developed (Visomat Comfort 20/40) that estimates the individual's arm circumference by measuring the cuff filing volume and makes an adjustment of measured BP taking into ...
Harvey Richard J - - 2008
OBJECTIVE: Assess paranasal sinus distribution of topical solutions following endoscopic sinus surgery (ESS) using various delivery devices. STUDY DESIGN: Experimental prospective study. SUBJECTS AND METHODS: Ten cadaver sinus systems were irrigated with Gastroview before surgery, after ESS, and after medial maxillectomy. Delivery was via pressurized spray (NasaMist), neti pot (NasaFlo), ...
Voermans R P - - 2008
BACKGROUND AND STUDY AIMS: Secure transluminal closure is the most fundamental prerequisite for the safe introduction of natural orifice transluminal endoscopic surgery (NOTES). The aim was to compare acute strength of various gastrotomy closure techniques in an in vitro porcine stomach model by assessing leak pressures. METHODS: Standardized gastrotomies were ...
Nesson Silas - - 2008
We developed a miniature fiber optic pressure sensor system and utilized it for in vitro intradiscal pressure measurements for rodents. One of the unique features of this work is the design and fabrication of a sensor element with a multilayer polymer-metal diaphragm. This diaphragm consists of a base polyimide layer ...
Wedgbury Kirsty - - 2008
There has been increasing pressure to remove medical devices containing mercury from clinical areas, which is leading to the demise of the mercury sphygmomanometer. As a result, automated blood pressure devices have been embraced by clinicians for their convenience and ease of use. However, it is essential that clinicians are ...
Lurie Fedor - - 2008
This study investigated the relationships between the interface pressure produced by intermittent pneumatic compression (IPC) devices, the deformation of extremity tissues produced by this pressure, and changes in venous blood flow associated with this deformation by use of magnetic resonance imaging (MRI) and duplex ultrasound (DUS) imaging in addition to ...
Utanohara Yuri - - 2008
It is clinically important to evaluate tongue function in terms of rehabilitation of swallowing and eating ability. We have developed a disposable tongue pressure measurement device designed for clinical use. In this study we used this device to determine standard values of maximum tongue pressure in adult Japanese. Eight hundred ...
Kolbeck Kenneth J - - 2008
PURPOSE: This study evaluated the aerostatic properties of the catheter clamp during over-the-wire catheter exchanges and determined if protective devices reduce volumes of air emboli (AE). MATERIALS AND METHODS: A cuffed catheter was placed in an AE model in physiologic conditions and the volume of AE was recorded during 60 ...
Pini Claudio - - 2008
BACKGROUND: Electronic blood pressure monitoring devices are widely used by patients for monitoring their blood pressure at home. Few of them, however, have been validated against recognized protocols and proved to be accurate. OBJECTIVE: This study aimed at verifying whether the automatic electronic oscillometric blood pressure measuring device, Artsana CS ...
Miranda Juan Jaime - - 2008
To compare oscillometric blood pressure devices with mercury sphygmomanometry in children. Blood pressure measurements were obtained with a mercury sphygmomanometer and one of two oscillometric devices. Correlations within each device and agreement between the two devices were evaluated. In children, blood pressure measured by the oscillometric device was poorly correlated ...
de Greeff Annemarie - - 2008
OBJECTIVE: Hypertension affects the global population. The effective management of hypertension requires accurate measurement and monitoring of blood pressure. We evaluated the accuracy of a self-measurement device, with features suitable for hospital practice, in an adult population according to the International Protocol of the European Society of Hypertension. METHODS: After ...
de Cocq Patricia - - 2009
Pressure measurement devices in equine sports have primarily focused on tack (saddle pads and saddle fitting methods). However, saddle pressure devices may also be useful in evaluating the interaction and distribution of normal forces between the horse and rider, including rider position and riding technique. This study examined the validity, ...
Mutzbauer Till - - 2010
Gastric inflation is a significant issue when ventilation is performed in cases of unprotected airway. The objective of this study was to compare the amounts of gastric insufflation and tidal volumes produced by a hose-extended bag-valve-mask (BVM) device supplemented by an interposed reservoir bag with a similar BVM without the ...
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