Search Results
Results 301 - 350 of 1268
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Alpert Bruce S - - 2007
OBJECTIVES: To clinically evaluate an inflation-based algorithm incorporated into a new automated blood pressure monitor manufactured by Welch Allyn, Inc. METHODS: Device evaluation was performed according to the Association for the Advancement of Medical Instrumentation standard. An overabundance of patients with hypertension (32) were part of the 110 total participants. ...
Omboni Stefano - - 2007
OBJECTIVE: This study aimed at verifying the accuracy of three automated electronic oscillometric blood pressure measuring devices, namely Omron M5-I (home use upper arm monitor), R5-I (home use wrist monitor) and HEM-907 (professional use upper arm monitor) according to the European Society of Hypertension International Protocol in elderly individuals. METHODS: ...
Popov Todor A - - 2007
RATIONALE: Inflammation is a universal pathological reaction and is characterized among other things by increased heat production. The question stays whether the contribution of the inflamed lung tissues to the overall exhaled breath temperature (EBT) can be reliably detected and used in everyday clinical practice. METHODS: We have designed a ...
Larsen Alf Inge - - 2007
Mechanical chest compression may be necessary to make coronary intervention possible during resuscitation. We report our experience using the Lund University Cardiac Arrest System (LUCAS, Jolife, Lund, Sweden) which is a gas-driven sternal compression device that incorporates a suction cup for active decompression. During the last 13 months LUCAS has ...
Magder Sheldon - - 2007
There is a lot of discussion in the literature about the best way to manage hemodynamic problems, but no algorithm can be useful unless the hemodynamic measurements that are used in the algorithms are valid. Yet, studies repeatedly have shown that physicians and nurses do not have a strong knowledge ...
Pearce Gillian - - 2007
We present data concerning the design and testing of a new clot-sucking device for possible use in the extraction of blood clots that arise during thromboembolic strokes. Our data indicate that a jelly-like mass of 0.02 g (of an artificial clot) can be removed from plastic tubing using this vortex-creating ...
Akram H M - - 2007
A new standard mercury manometer has been developed to calibrate low vacuum gauges in the range from atmospheric pressure to 1 mbar. It consists of a cistern that is a small stainless steel container used as mercury reservoir and also as the first Hg column connected to a long glass ...
Coussa C - - 2007
In situ micro-Raman spectroscopy was performed on lanthanum borogermanate (LBG) glasses, compressed in a diamond anvil cell at ambient temperature. Up to 5.6 GPa the structural changes are reversible, whereas experiments performed at 10 GPa and higher are characterized by hysteresis loops. A noticeable change of evolution of the main Raman band ...
Lodi Carlo Alberto - - 2007
BACKGROUND: Nowadays, an increasing number of dialysis machines lodge a blood pressure (BP) measuring device, whose accuracy has a clear implication for the patients' clinical management. METHODS: An automated oscillometric sphygmomanometer (HD-BPM by Gambro Dasco) used during haemodialysis was submitted to both in vitro and in vivo tests, in order ...
Cai Jin - - 2007
Wurtzite (B4) compounds commonly undergo a structural transition to the rocksalt (B1) phase under high pressure. The underlying transition mechanism, or the so-called transition path, has been extensively investigated in recent years. Two different transition paths have been proposed for the B4-B1 phase transition, that is the 'hexagonal' path and ...
Wade Matthew - - 2007
PURPOSE: To determine the efficacy of the Cruise Control surge-limiting device (Staar Surgical) with phacoemulsification machines known to have high levels of surge. SETTING: John A. Moran Eye Center Clinical Laboratories. METHODS: In an in vitro study, postocclusion anterior chamber depth changes were measured in fresh phakic human eye-bank eyes ...
Pini Claudio - - 2007
BACKGROUND: There is evidence that blood pressure measurement outside the doctor's office can provide valuable information for the diagnostic evaluation of hypertensive patients and for monitoring their response to treatment. Home blood pressure monitoring devices have a major role in this setting, provided that their accuracy in measuring blood pressure ...
El Feghali Ramzi N - - 2007
BACKGROUND: A high percentage of hypertensive patients present an arm circumference of over 32 cm; the use of a large cuff is therefore recommended. Validation studies are usually performed in the general population using a standard-size cuff. The aim of this study was to assess the accuracy of the Omron ...
Arumugam S - - 2007
A simple design of the uniaxial pressure device for the measurement of ac-susceptibility at low temperatures using closed cycle refrigerator system is presented for the first time. This device consists of disc micrometer, spring holder attachment, uniaxial pressure cell, and the ac-susceptibility coil wound on stycast bobbin. It can work ...
Stergiou George S - - 2007
OBJECTIVE: Current guidelines recommend that self monitoring of blood pressure at home should only be performed using validated devices. This study assessed the accuracy of the Microlife WatchBP Home device for self home blood pressure measurement according to the European Society of Hypertension International Protocol. METHODS: Thirty-three participants were included ...
Steagall Paulo V M - - 2007
OBJECTIVE: To evaluate a prototype pressure stimulus device for use in the cat and to compare with a known thermal threshold device. ANIMALS: Eight healthy adult cats weighing between 3.0 and 4.9 kg. METHODS: Pressure stimulation was given via a plastic bracelet taped around the forearm. Three 2.4 mm diameter ...
McGuigan Alison P - - 2007
A modular construct, created by the assembly of discrete microscale objects, has been proposed to enable the engineering of large, vascularized tissues containing multiple cell types. A simple theoretical analysis of the design constraints relevant to a modular construct was performed and used to define useable device operating ranges. The ...
Valentino Daniel J - - 2007
BACKGROUND: Little objective laboratory data are available describing the physiologic effects of stun guns or electromuscular incapacitation (EMI) devices, but increasing morbidity and even deaths are associated with their use. We hypothesized that exposure to EMI discharges in a model animal system would induce clinically significant acidosis and cardiac arrhythmia. ...
González-Salgado D - - 2007
An experimental device for making isobaric heat capacity measurements of liquids under pressure is presented. The device is an adaptation of the Setaram micro-DSC II atmospheric-pressure microcalorimeter, including modifications of vessels and a pressure line allowing the pressure in the measurement system to be set, controlled, and stabilized. The high ...
Le Berre J F - - 2007
The variable pressure or environmental scanning electron microscope (VP-SEM; ESEM) has become the microscope of choice for many scientists and technologists. Hence, the development of robust methods for X-ray microanalysis, limited by skirting, has become critical. In this paper, two pressure variation correction methods (Doehne and Gauvin) are compared. Both ...
Goodwin James - - 2007
OBJECTIVES: Accuracy of blood pressure measuring devices is of prime importance and should be validated before devices are used clinically. We carried out an independent evaluation of the Oscar 2 oscillometric ambulatory blood pressure monitor (SunTech Medical, Model 222) according to the British Hypertension Society (BHS) Protocol. METHODS: Validation of ...
Altunkan Sekip - - 2007
OBJECTIVE: A variety of automatic blood measurement devices with diverse features have been introduced to the medical markets recently. Among these devices, models that measure at the wrist have become increasingly popular in self measurements. The objective of this study was to evaluate the accuracy of the Samsung SBM-100A and ...
Dasselaar J J - - 2007
Intra-dialytic hypotension is the most frequently occurring complication during haemodialysis and can lead to serious complications. Devices that continuously and non-invasively monitor relative blood volume (RBV) changes during HD are being advocated as a tool to maintain an adequate volume of the intravascular compartment in order to avoid dialysis hypotension. ...
de Greeff Annemarie - - 2007
OBJECTIVE: Over the last two decades, concerns over mercury toxicity have given rise to the continuous release of new and improved automated blood pressure measurement devices as a replacement for the mercury sphygmomanometer. Out-of-office blood pressure monitoring has been shown to have various advantages, including a reduced white-coat effect and ...
Convertino Victor A - - 2007
OBJECTIVE: To test the hypothesis that an impedance threshold device would increase systolic blood pressure, diastolic blood pressure, and mean arterial blood pressure and delay the onset of symptoms and cardiovascular collapse associated with severe central hypovolemia. DESIGN: Prospective, randomized, blinded trial design. SETTING: Human physiology laboratory. PATIENTS: Nine healthy ...
Latif Najma - - 2007
BACKGROUND: Reverse remodeling can occur after left ventricular assist device (LVAD) support, which is sufficient in some cases to allow explantation of the device without cardiac transplantation. The molecular mechanisms involved remain unknown. A specific pattern of expression of sarcomeric and non-sarcomeric proteins in the myocardium is thought to be ...
Kopelman Doron - - 2007
BACKGROUND: Generations of investigators have attempted to achieve compression bowel anastomosis by a sutureless device, providing temporary support to the tissue and facilitating the natural healing process. The biocompatibility of nickel-titanium alloy has made it attractive for use in medical implants and devices, and several studies have described the creation ...
Boutsioukis C - - 2007
AIM: To monitor ex vivo intra-canal irrigation with three endodontic needles (25, 27 and 30 gauge) and compare them in terms of irrigant flow rate, intra-barrel pressure, duration of irrigation and volume of irrigant delivered. METHODOLOGY: A testing system was constructed to allow measurement of selected variables with pressure and ...
Kong Wei - - 2007
We have developed an eight-channel telemetry system for studying experimental models of chronic cardiovascular disease. The system is an extension of a previous device that has been miniaturized, reduced in power consumption and provided with increased functionality. We added sensors for ventricular dimension, and coronary artery blood flow and arterial ...
McGee M F - - 2007
BACKGROUND: Natural orifice translumenal endoscopic surgery (NOTES) provides surgical access to the peritoneal cavity without skin incisions. The NOTES procedure requires pneumoperitoneum for visualization and manipulation of abdominal organs, similar to laparoscopy. Accurate measurement of the pneumoperitoneum pressure is essential to avoid potentially deleterious effects of intraabdominal compartment syndrome. A ...
Goto T - - 2007
BACKGROUND: Although many mechanical devices are being developed for functional end-to-end anastomosis (FETEA), the best choice remains to be determined. The mechanical strength of each device is an important factor associated with anastomotic leakage. In turn, anastomotic patency is related to postoperative stenosis. This study examined the bursting pressure and ...
Manunza I - - 2007
In this paper, we report on pressure sensors based on completely flexible organic thin film transistors (OTFTs). A flexible and transparent plastic foil (Mylar) is employed both as substrate and gate dielectric. Gold source and drain electrodes are patterned on the upper side of the foil while the gate electrode ...
Cyr Martin - - 2007
High-pressure squeezing is a technique used for the extraction of the pore water of porous materials such as sediments, soils, rocks, and concrete. The efficiency of extraction depends on the maximum pressures on the materials. This article presents the design of a high-pressure device reaching an axial pressure of 1000 ...
Elliott William J - - 2007
OBJECTIVE: Alternatives to the traditional, but possibly toxic mercury sphygmomanometer are needed for accurate blood pressure measurements in the medical workplace. We compared the performance of two commercially available potential replacements for the mercury column; an anaeroid manometer (Baum & Co) and an automated oscillometric device (Omron HEM-907), using the ...
Ilman Nevzat - - 2007
OBJECTIVE: Among the electronic blood pressure measuring devices used for self-measurement of blood pressure by patients, models that measure at the wrist are becoming increasingly popular. Validation studies done with these equipments, however, are quite few. The objective of this study was to evaluate the accuracy of the Braun BP ...
Rudolph Ross - - 2007
Skin pressure symptoms can occur in thin patients with pacemakers, with erosion through the skin surface a possibility. To correct this problem without device removal, two patients had nonantigenic preserved human dermis grafts placed over their pacemakers. This acellular nonantigenic human dermal substitute provided significant thickness over the devices and ...
Ng Kim-Gau - - 2007
BACKGROUND: The use of reusable transducers for invasive blood pressure monitoring can lead to cost savings for the hospital and help to reduce waste. OBJECTIVE: To evaluate the BD RT2000 reusable transducer system developed by Becton Dickinson. METHODS: Forty-one development samples were tested for their static accuracy, zero offset, zero ...
Dickson Brandy K - - 2007
PURPOSE: Pilot study was developed to determine if a blood pressure measurement training program would improve guideline knowledge and technique in community-based nurses (n= 6). METHODS: American Heart Association guidelines were used to develop the Blood Pressure Measurement Education and Evaluation Program (BEEP). Data on guideline knowledge, device quality, measurement ...
de Greeff Annemarie - - 2007
OBJECTIVE: Clinical recommendation of an automated blood pressure device is dependent on assessment according to a recognized protocol. The DINAMAP ProCare monitor is an oscillometric device intended for hospital, physician office or clinic use. The device algorithm was developed and tested against an auscultatory standard to increase comparability, in contrast ...
Muangman Pornprom - - 2007
Abdominal compartment syndrome (ACS) is consistently reported to have significant morbidity and mortality. Major burn patients who receive massive fluid resuscitation are at high-risk for this condition. Close monitoring of ACS is necessary for these patients. Prolonged unrelieved intra-abdominal pressure (IAP) at greater than 20 mmHg can produce significant morbidity ...
Bales Joshua G - - 2007
Pediatric heart condition management may include a variety of implanted cardiac devices. Monopolar electrocautery (Bovie) produces significant electromagnetic interference to these devices. This interference can alter the function of a cardiac generator resulting in a variety of complications including impaired cardiac output and asystole. We report the case of a ...
Young Anthony J - - 2007
BACKGROUND AND PURPOSE: Knowledge of the ureteral response to instrumentation is limited. Ureterodynamic parameters such as intraureteral pressure, conduction velocity, direction of peristalsis, and electromyography have been measured using a variety of methods; however, these techniques are impractical for routine clinical use. The aim of this study was to evaluate ...
Hedman Travis L - - 2007
Burn therapists routinely are tasked to position the lower extremities of burn patients for pressure ulcer prevention, skin graft protection, donor site ventilation, and edema reduction. We developed two durable and low-maintenance devices that allow effective positioning of the lower extremities. The high-profile and low-profile leg net devices were simple ...
Morley Deborah - - 2007
OBJECTIVE: Current left ventricular assist devices are designed to provide full hemodynamic support for patients with end-stage failing hearts, but their use has been limited by operative risks, low reliability, and device-related morbidity. Such concerns have resulted in minimum use of left ventricular assist devices for destination therapy. We hypothesize ...
Hor King-Wei - - 2007
A low-cost, sterilizable and unobtrusive instrumentation device was developed to quantify and study the loss-of-resistance technique in epidural anesthesia. In the porcine study, the rapid fall of the applied force, plunger displacement and fluid pressure, and the oral indication of the anesthesiologists were shown to be consistent with the loss-of-resistance. ...
Frischholz M - - 2007
Patients with hydrocephalus, idiopathic intracranial hypertension and head injury frequently require monitoring of intracranial pressure (ICP) and may need repeated episodes of monitoring months or years apart. The gold standard for measurement of ICP remains the external ventricular catheter. This is a fluid-filled catheter transducer system that allows regular recalibration ...
Tatara Naoe - - 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 ...
Belghazi Jalil - - 2007
Four electronic devices for self-measurement of brachial blood pressure (BP): the Omron M1 Plus, the Omron M6 Comfort, the Spengler KP7500 D, and the Microlife BP A100 Plus, were evaluated in four separate studies according to the International Protocol of the European Society of Hypertension (ESH). The International Validation Protocol ...
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. ...
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