This study aimed to evaluate the accuracy of the automated oscillometric upper arm blood pressure monitor BP101H (Kingyield Technology, Shenzhen, China) for home blood pressure monitoring according to the International Protocol of the European Society of Hypertension. Systolic and diastolic blood pressures were sequentially measured in 33 adult Chinese participants ...

The Food and Drug Administration (FDA) is classifying the non-powered suction apparatus device intended for negative pressure wound therapy (NPWT) 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: Non-Powered Suction Apparatus Device Intended ...

The management of high blood pressure (BP) is particularly inadequate in low-income countries, where the unavailability of a reliable, durable, and affordable BP-measurement device is a major obstacle to accurate diagnosis. Recognizing this, a World Health Organization committee was established to correct this deficiency by influencing manufacturers to produce a ...

Although the mercury sphygmomanometer is widely regarded as the gold standard for office blood pressure measurement, the ban on use of mercury devices continues to diminish their role in office and hospital settings. To date, mercury devices have largely been phased out in United States hospitals. This situation has led ...

We report a practical vacuum pressure sensor based on a ZnO nanowire array (NWA). An oriented single-crystal ZnO NWA was synthesized by electrodeposition. The device consists of two ITO glass plates coated with a ZnO NWA. Scanning electron microscopy (SEM) and the x-ray diffraction (XRD) pattern show that the as-grown ...

Background. Hypertension in pregnancy in the developing world is largely underreported, misdiagnosed, and untreated, especially in rural settings, though it contributes significantly to maternal and perinatal morbidity and mortality. To reduce general global cardiovascular and cerebrovascular morbidity and mortality, the World Health Organization aims to develop and validate low-resource-use blood ...

To compare the efficacy of the new reusable vessel-sealing device MarSeal (KLS Martin, Tuttlingen, Germany) with the conventional standard disposable LigaSure device (Covidien-Valleylab, Boulder, CO) in an in vivo animal model. Prospective animal study. Center of Experimental Surgery at a university hospital. Thirteen sheep. The carotid and femoral arteries were ...

We report the stability, accuracy, and development history of a new left atrial pressure (LAP) sensing system in ambulatory heart failure (HF) patients. A total of 84 patients with advanced HF underwent percutaneous transseptal implantation of the pressure sensor. Quarterly noninvasive calibration by modified Valsalva maneuver was achieved in all ...

The role of pelvic circumferential compression devices (PCCDs) is to temporarily stabilise a pelvic fracture, reduce the volume and tamponade the bleeding. Tissue damage may occur when PCCDs are left in place longer than a few hours. The aim of this randomised clinical trial was to quantify the pressure at ...

The objective of this study is to determine the accuracy of the UEBE visomat handy device for blood pressure measurement in the wrist of patients tested according to the requirements of the International Protocol of the European Society of Hypertension (ESH). Device evaluation was done in 33 patients whose age ...

Measurement of interface pressure between the skin and a compression device has gained practical importance not only for characterizing the efficacy of different compression products in physiological and clinical studies but also for the training of medical staff. A newly developed portable pneumatic pressure transducer (Picopress®) was compared with two ...

The measurement of blood pressure in the physician's office is subject to a number of observer errors and also to the "white-coat effect." Automatic devices that measure blood pressure without a human observer in the room can eliminate many of these problems. We argue for greater use of these devices ...

In vitro cardiovascular device performance evaluation in a mock circulation loop (MCL) is a necessary step prior to in vivo testing. A MCL that accurately represents the physiology of the cardiovascular system accelerates the assessment of the device's ability to treat pathological conditions. To serve this purpose, a compact MCL ...

When withdrawing a fluid sample (for additional chromatographic analyses) from an apparatus operated at a reduced pressure, a typical syringe proves to be ineffective (even if it is equipped with a gas tight plunger). It simply does not create enough pressure differential to remove a fluid sample from a reduced ...

Remote monitoring is one modality of structured care in chronic heart failure. The purpose of this study was to evaluate the feasibility of a new wireless telemonitoring system via a mobile phone network. Portable home devices for electrocardiogram, blood pressure, body weight and self-assessment measurements were connected (via Bluetooth®) to ...

Background. Recent events in our hospital, combined with international recommendations, catalyzed the need to move from mercury sphygmomanometry to automated blood pressure (BP) recording in pregnancy. Aim. To test the accuracy of the Omron T9P automated BP recorder in pregnant women, using mercury sphygmomanometry as the gold standard. Setting. Antenatal ...

To compare the Mapleson D circuit and the bag-valve-mask device for mask ventilation of patients undergoing electroconvulsive therapy (ECT). Cross-over study. Single-center academic medical center. 18 patients undergoing ECT for major depressive disorder. Patients were randomized to undergo mask ventilation by the Mapleson D circuit or the bag-valve-mask device. End-tidal ...

An automated sample changer with an Eulerian cradle for neutron texture measurements is described. This device has been measuring over 2300 texture and almost 400 powder samples at ambient conditions since it became operational in 2002 for use in the high pressure-preferred orientation diffractometer at the LANSCE neutron scattering facility. ...

The objective of this study was to compare an implanted direct blood pressure monitor and a non-invasive oscillometric unit for use in anesthetized and awake green iguanas. Prospective experimental trial. Four male and four female adult green iguanas (Iguana iguana) weighing 1833 +/- 534 g. For each animal, the carotid ...

OBJECTIVES: Intra-abdominal hypertension (IAH) is an increasingly recognized disorder, and its diagnosis depends on accurate pressure monitoring. Bladder-based protocols are favored, but are not always clinically feasible. Abdominal venous (i.e. vena cava) pressure measurements are an alternative but are logistically challenging. We hypothesized that for patients suffering acute kidney injury, ...

Improving the safety of diving and increasing knowledge about the adaptation of the human body to underwater and hyperbaric environment require specifically developed underwater instrumentation for physiological measurements. In fact, none of the routine clinical devices for health control is suitable for in-water and/or under-pressure operation. The present paper addresses ...

Falls and fall related injuries are a significant cause of morbidity, disability, and health care utilization, particularly among the age group of 65 years and over. The ability to detect falls events in an unsupervised manner would lead to improved prognoses for falls victims. Several wearable accelerometry and gyroscope-based falls ...

To analyze the accuracy and linearity of different CPAP devices outside of the manufacturers' own quality control environment. Accuracy (how well readings agree with the gold standard) and linearity were evaluated by comparing programmed pressure to measured CPAP pressure using an instrument established as the gold standard. Comparisons were made ...

To determine if a hands-free, noninvasive Doppler ultrasound device can reliably detect low-flow cardiac output by measuring carotid artery blood flow velocities. We compared the ability of observers to detect carotid artery flow velocity differences between pseudo-pulseless electrical activity (PEA) and true-PEA cardiac arrest. Five swine were instrumented with aortic ...

We present an optofluidic chip with integrated polymer interferometers for measuring both the microfluidic air pressure and flow rate. The chip contains a microfluidic circuit and optical cavities on a polymer which was defined by soft lithography. The pressure can be read out by imaging the interference patterns of the ...

Clinical validation of blood pressure oscillometric devices are almost exclusively conducted in adults. Because oscillometric devices are used in children, it is critical to assess their accuracy also in this population. We compared blood pressure readings using an oscillometric automated device (Dinamap XL, model CR9340) with readings obtained with the ...

OBJECTIVE: This study aimed to evaluate the accuracy of the automated oscillometric upper arm blood pressure monitor KD-5915 (ANDON Health, Tianjin, China) for home blood pressure monitoring according to the International Protocol. METHOD: Systolic and diastolic blood pressures were sequentially measured in 33 adult Chinese individuals using a mercury sphygmomanometer ...

OBJECTIVE: This study evaluates a novel liver-assist device platform with a microfluidics-modeled vascular network in a femoral arteriovenous shunt in rats. SUMMARY OF BACKGROUND DATA: Liver-assist devices in clinical trials that use pumps to force separated plasma through packed beds of parenchymal cells exhibited significant necrosis with a negative impact ...

OBJECTIVE: Twenty-four-hour blood pressure measurement is of importance not only in the detection of hypertension but also in the detection of blood pressure changes in hypertensive and nonhypertensives over the day to identify, for example, nondipper hypertensives. This study describes the validation of the mobil-O-Graph according to the criteria of ...

We report on the validation of the new generation Mobil-O-Graph 24/48 h ambulatory blood pressure monitor according to the criteria of the European Society of Hypertension. In 15 individuals participating in phase I for systolic pressure, all 45 measures differed less than 15 mmHg, 43 and 33 out of 45 ...

Paradoxically, improvements in emergency medicine have increased survival albeit with severe disability ranging from quadriplegia to "locked-in syndrome." Locked-in syndrome is characterized by intact cognition yet complete paralysis, and hence these individuals are "locked-in" their own body, at best able to communicate using eye blinks alone. Sniffing is a precise ...

In this paper, we describe a method to load a microfluidic device, the SlipChip, via dead-end filling. In dead-end filling, the lubricating fluid that fills the SlipChip after assembly is dissipated through the gap between the two plates of the SlipChip instead of flowing through an outlet at the end ...

The aims of this study were to develop a sham cupping device and to validate its use as a placebo control for healthy volunteers. A sham cupping device was developed by establishing a small hole to reduce the negative pressure after suction such that inner pressure could not be maintained ...

Pulse pressure (PP) analysis from a radial arterial line is available with the LiDCO plus monitor (LiDCO, Cambridge, UK) and FloTrac/Vigileo (Edwards Lifesciences, Irvine, CA, USA). The aim of this study was to investigate the agreement of continuous PP analysis against intermittent thermodilution (ITD) using the pulmonary artery catheter (PAC). ...

A new tongue pressure device consisting of a simple and safe disposable probe and manometer has been developed. This report describes a study that examined the validity of the new device, comparing it to a widely used tongue pressure manometer, the Iowa Oral Performance Instrument (IOPI), and to the stable ...

Indirect blood pressure measurements using high definition oscillometric (HDO) and Doppler devices were compared in 50 anaesthetised client-owned cats presented for various surgical procedures. Sites of cuff placement for Doppler were identified as forelimb and hindlimb and for HDO as forelimb and tail. Oscillometric and Doppler readings were obtained in ...

Experimental data about the efficacy and safety of sealing devices are rare. Therefore, this study investigated these parameters for three commercially available energy-based vascular sealing and cutting systems. In male hybrid pigs, 487 carotid artery segments were sealed and cut using the harmonic scalpel or several bipolar sealing devices. The ...

This study was designed to assess the accuracy and reliability of a new, portable, fully automated photoplethysmography (PPG) device for toe blood pressure (TBP) measurement. Within-subject comparison with conventional laser Doppler (LD) measurement. Four TBP measurements were performed on both lower limbs, alternatively with LD and PPG in 200 patients ...

An algorithm for an adaptive boundary condition for the simulation of fully developed, pressure driven flows using the lattice-Boltzmann method is introduced. The method simulates the effect of the solid walls confining a structure with dual periodicity, such as used in microfluidic devices. We combine a recently introduced boundary condition ...

INTRODUCTION: Pressurized saline irrigation is commonly used during ureteroscopy, which can cause an increase in intrarenal pressure leading to postoperative pain, sepsis, and renal injury due to pyelovenous and pyelolymphatic backflow. To prevent retrograde stone migration during ureteroscopic lithotripsy, antiretropulsion devices can be deployed, which may or may not protect ...

Persistence of the ductus arteriosus (DA), connecting the aorta to the pulmonary artery, after birth leads to a congenital heart disease known as Patent Ductus Arteriosus (PDA). The objective of this study was to propose a new intraductal design for PDA occlusion and determine the efficacy of the new device ...

In this article, we report the design of a microchip based hydraulic pump that employs a sodium silicate derived sol-gel structure for generating pressure-driven flow within a microfluidic network. The reported sol-gel structure was fabricated in a chosen location of our device by selectively retaining sodium silicate solution within a ...

BACKGROUND: The BP11 is currently one of the lowest-cost blood pressure (BP) monitors available in the UK and has sold approximately 1.5 million units since its launch in 2006. As access to home-use BP monitoring increases, it is important that such devices are validated so that consumers and clinicians can ...

OBJECTIVE: Blood pressure measuring devices should be subjected to an independent evaluation of accuracy before clinical use. The results of the validation of the Andon KD-575 automated blood pressure monitor according to the European Society of Hypertension International Protocol in adults are presented in this paper. METHODS: Sequential same-arm measurements ...

OBJECTIVE: Non-invasive blood pressure recordings may be inaccurate in the critically ill patient and measurement difficulties are intensified in the prehospital setting. This may adversely impact upon outcomes for many critically ill patients, particularly those with traumatic brain injury and/or lengthy prehospital times. This study aimed to validate a non-invasive, ...

OBJECTIVE: The validation of two new oscillometric blood pressure (BP) measurement devices according to the International Protocol (European Society of Hypertension). METHODS: Two trained observers measured BP in 33 patients with nine sequential same-arm measurements each, whereby five measurements with the mercury standard device alternated with four measurements with each ...

The coronary sinus (CS) vessel serves as a conduit for the deployment of percutaneous transvenous mitral annuloplasty (PTMA) devices for the treatment of functional mitral regurgitation. Characterization of the mechanical response of the CS is an important step towards an understanding of tissue-device interaction in PTMA intervention. The purpose of ...

1. Measurement of blood pressure via telemetry in a variety of animal species has become an indispensable part of cardiovascular physiology, drug development and safety pharmacology. 2. These telemetry systems use fluid-filled catheters, which differ from commonly encountered indwelling catheters by virtue of their short length, high durometer, variable inner ...

AIM: This study investigates if a n impedance threshold valve (ITV) might improve survival after cardiac arrest by increasing vital organ blood flow. The combination of ITV and supraglottic airway devices (SADs) has not been previously studied. This simulation study in a manikin aimed at analysing differences in ventilation with ...

OBJECTIVES: To evaluate high-definition and conventional oscillometry in comparison with direct blood pressure measurements in anaesthetised dogs. METHODS: Eight simultaneous readings for systolic, diastolic and mean pressure were obtained directly and with each of two devices in nine anaesthetised dogs. Measurement procedure and validation were based on the 2007 ACVIM ...