Search Results
Results 1 - 50 of 1679
1 2 3 4 5 6 7 8 9 10 >
da Cunha Anderson F AF Department of Veterinary Clinical Science, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, - - 2014
To determine if blood pressure measured with an ultrasonic Doppler flow detector (Doppler) is in good agreement with directly measured blood pressures in anesthetized cats. Prospective observational study. University veterinary teaching hospital. Thirty-nine cats undergoing routine neutering. Cats were divided into 2 groups; 19 cats enrolled in Group A had ...
Morgan Theodore R TR US Army Special Warfare Medical Group (Airborne), Fort Bragg, NC. Electronic address: - - 2014
The purpose of this study was to evaluate 2 ruggedized field intravenous (IV) systems currently in use by US military medics and to determine their effect on fluid bolus administration rates. A series of 500 mL fluid boluses consisting of either Lactated Ringer's solution or Hextend were delivered to 2 ...
Egilmez Tulga T Department of Urology, Adana Teaching and Medical Research Center, Ba┼čkent University School of Medicine, Adana, - - 2014
Objective: To evaluate the efficacy of uroflowmetry performed through an indwelling catheter on the differential diagnosis of detrusor acontractility. Patients and Methods: 50 men aged between 51 and 85 years (mean 66 years) presenting to the outpatient urology department with indwelling catheters due to urinary retention were included in the ...
McCormick Sarah S Senior House Officer Department of Anaesthesia Dudley NHS Foundation Trust Russells Hall Hospital Dudley DY1 - - 2014
The TruWave pressure monitoring kit with TruWave disposable pressure transducer (Edwards Lifesciences LLC, Irvine, USA) is regularly used for invasive monitoring via arterial catheters in the operating theatres, critical care and high dependence units.
Soleimani Sajjad S Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, - - 2014
According to a number of clinical studies, coronary aspiration catheters are useful tools to remove a thrombus (blood clot) blocking a coronary artery. However, these thrombectomy devices may fail to remove the blood clot entirely. Few studies have been devoted to a systematic analysis of factors affecting clot aspiration. The ...
Galea J P - - 2014
Microdialysis of macromolecules within the brain provides a unique insight into physiological and pathological processes occurring within an otherwise inaccessible cranial cavity. The physically restricted nature of the intracranial compartment may present wider variations of pressure and temperature than those experienced in the rest of the body. In this study ...
Abbasi Mohammad-Reza MR Nephrology Research Center, Tehran University of Medical Sciences , Tehran , Iran - - 2014
Abstract Controlling blood pressure in hemodialysis patients is crucial but not always easy. The most common blood pressure measurement method is peri-dialysis measurement, but due to interdialytic blood pressure fluctuations, we are unsure if it is the proper way for evaluating blood pressure. Some studies have shown the superiority of ...
Cleven Nina J NJ Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Helmholtz-Institute, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany, - - 2014
Devices constantly tracking the blood pressure (BP) of hypertensive patients are highly desired to facilitate effective patient management and to reduce hospitalization. We report on experiences gathered in a pilot study that was designed to evaluate the prototype of a newly developed, minimally invasive implantable sensor system for long-term BP ...
Kumar Sanjeev S UCL Center for Nephrology, Royal Free Hospital, University College London Medical School, London - - - 2014
Introduction: A fall in blood pressure is the most common complication of outpatient hemodialysis. Several factors have been implicated, including serum sodium to dialysate gradient, ultrafiltration rate, and the amount of fluid to be removed during dialysis.Methods: We prospectively audited 400 adult patients attending for their routine midweek hemodialysis session, ...
Prabaharan Balaji B Department of Anesthesia and Critical Care, Belhoul Speciality Hospital, Al Baraha, Deira, Dubai, - - 2014
Migration of the tip of central venous catheters is not an uncommon event and the mechanism for this is not clear. Increased intrathoracic pressure due to coughing, sneezing or weight lifting, changing the body position or physical movements such as abduction or adduction of the arms is thought to be ...
Maag Anne-Lise D AL University of Wisconsin, Departments of - - 2014
Appropriate pressure during the application of a cast is critical to provide adequate stabilization of fractures. Force-sensing resistors (FSR) were used to measure pressure during cast placement and removal. The data demonstrated a signature pattern of skin pressure during the different steps of cast placement and removal. This reproducible signal ...
Walterspacher Stephan S Department of Pneumology, University Hospital of Freiburg, Freiburg, - - 2013
Respiratory muscle function as well as lung and chest wall mechanics are reliably assessed by esophageal and gastric balloon catheters. This in-vitro benchmark study aimed at assessing the mechanical properties of commercially available balloon catheters using an experimental model with three defined compliances (27, 54, 90 mL/cmH2O).Six catheters were investigated ...
Banerjee Rupak K RK Mechanical and Materials Engineering Department, University of Cincinnati, 593, Rhodes Hall, ML 0072, Cincinnati, OH 45221, United States. Electronic address: - - 2013
The decision to perform intervention on a patient with coronary stenosis is often based on functional diagnostic parameters obtained from pressure and flow measurements using sensor-tipped guidewire at maximal vasodilation (hyperemia). Recently, a rapid exchange Monorail Pressure Sensor catheter of 0.022″ diameter (MPS22), with pressure sensor at distal end has ...
Kawase Yoshiaki - - 2013
We aimed to investigate the effectiveness of a scoring balloon catheter in expanding a circumferentially calcified lesion compared to a conventional balloon catheter using an in vitro experiment setting and elucidate the underlying mechanisms of this ability using a finite element analysis. True efficacy of the scoring device and the ...
Seto Arnold H - - 2013
Background: Continuous intravenous adenosine infusion reportedly produces stable and maximal hyperemia to allow for FFR measurement, however, several observers have noted variation of the coronary/aortic (Pd/Pa) pressure ratio during the course of an adenosine infusion. Methods: Pd/Pa pressure recordings during continuous peripheral intravenous adenosine infusion were examined in 51 patients ...
Kameda Toru - - 2013
Occasionally, difficulty with standard urethral catheterization is encountered. We conducted a pilot study to evaluate whether transabdominal ultrasound (TAUS) showed the tip of a urethral catheter and whether TAUS-guided catheterization with transrectal pressure is successful in male patients in whom performing standard catheterization is difficult. The eligible study participants included ...
Fernandez Christina M - - 2013
To describe the successful application of CPR in a geriatric chinchilla employing basic and advanced life support measures during cardiopulmonary arrest (CPA). A 13-year-old female intact chinchilla presented to a general and multispecialty referral hospital for a dental procedure. During recovery from anesthesia the patient suffered CPA and CPR was ...
Moore D M DM Department of Anaesthesia, National Maternity Hospital, Dublin, Ireland. Electronic address: - - 2013
Idiopathic intracranial hypertension is important for the obstetric anaesthetist as it is mostly seen in obese women of childbearing age. The incidence is likely to increase as the obesity pandemic grows. Management of labour analgesia in these patients can be complex and requires multidisciplinary input. We successfully managed labour analgesia ...
Stuckenbrock Johanna K - - 2013
Sleep-disordered breathing (SDB) is highly prevalent and accompanied by a considerable reduction in quality of life and an increase in cardiovascular morbidity and mortality. To diagnose SDB and to assess the localization of an airway obstruction, multichannel pressure measurements in the pharynx and esophagus have been used but are still ...
Genay S - - 2013
Noradrenaline (NA) can be infused through various systems including single or double syringe pumps. The aim of this study was to define the best and most efficient infusion system in an emergency context. This was a retrospective clinical study based on the analysis of patients' hemodynamic data. Three infusion lines ...
Lenski Matthias - - 2013
Catheter-based renal denervation (RDN) reduces local and whole-body sympathetic activity and blood pressure (BP) in patients with resistant hypertension. However, safety concerns exist concerning the development of orthostatic dysfunction after RDN. In 36 patients (65±7.6years, 75% male) with resistant hypertension (office BP 162±24/91±14mmHg) treated with 4.8±1.7 antihypertensive drugs, tilt table ...
Lam Miu Fei - - 2013
Acute convection-enhanced delivery (CED) is a neurosurgical delivery technique that allows for precise and homogeneous intraparenchymal distribution of an infusate to a brain structure. It remains experimental due to difficulties in guaranteeing successful delivery. Real-time monitoring would provide immediate feedback on cannula placement, infusate distribution, and if the infusion is ...
Tani Yoshihiro - - 2013
A major earthquake measuring 9.0 on the Richter scale struck northeastern Japan at 2:46 pm on 11 March 2011. Several reports have described transient increases in blood pressure after major earthquakes, but the impact of such increases on hemodialysis patients has not been reported. We retrospectively investigated changes in blood ...
Mayhew Philipp D - - 2013
Objective-To evaluate the effect of pneumoperitoneum on cardiorespiratory variables and working space during experimental induction of 3 intra-abdominal pressures (IAPs) in cats. Animals-6 healthy young adult neutered male domestic shorthair cats. Procedures-All cats were anesthetized through use of a standardized protocol. A catheter was placed in the right femoral artery ...
Katsuda Shin-Ichiro - - 2013
We investigated whether the subservient relationship of peripheral to central hemodynamic parameters, such as the augmentation index (AI) and the second systolic (SBP2) and pulse pressures, were preserved with the progression of atherosclerosis in the Kurosawa and Kusanagi-hypercholesterolemic (KHC) rabbit, an animal model for hypercholesterolemia and atherosclerosis. Male KHC rabbits, ...
Brandão Andréa Araujo - - 2013
The authors review the concept of resistant hypertension and the involvement of the sympathetic nervous system in hypertension as a rational basis for the technique of renal sympathetic denervation (RSD) performed percutaneously. This revision is the result of an active search for scientific articles with the term "renal denervation" in ...
Lee Byung Kook - - 2013
We sought to assess the reliability of the method using the pressure measured at the intraosseous (IO) cannula while squeezing the involved limb (Psqueezing) in determining the position of the IO needle and to compare its performance with that of the traditional confirmation method. Eighty limbs of twenty domestic swine ...
Meidert Agnes S - - 2013
We compared blood pressure (BP) measurements obtained using radial artery applanation tonometry with invasive BP measurements using a catheter placed in the abdominal aorta through the femoral artery in patients with multiple organ dysfunction syndrome (MODS). In 23 intensive care unit patients with MODS, we simultaneously assessed BP values for ...
Tan Robert - - 2013
Direct measurements of arterial blood pressure most commonly use bulky external instrumentation containing a pressure transducer connected to an ex vivo fluid-filled arterial line, which is subject to several sensing artifacts. In situ blood pressure sensors, typically solid state piezoresistive, capacitive, and interferometric sensors, are unaffected by these artifacts, but ...
Tan Robert - - 2013
Direct measurements of arterial blood pressure most commonly use bulky external instrumentation containing a pressure transducer connected to an ex vivo fluid-filled arterial line, which is subject to several sensing artifacts. In situ blood pressure sensors, typically solid state piezoresistive, capacitive, and interferometric sensors, are unaffected by these artifacts, but ...
Weppner Justin - - 2013
The military medical community has promoted use of Foley catheter balloon tamponade in the initial management of vascular injury owing to neck or maxillofacial trauma. The aim of the study was to compare outcomes with Foley catheter tamponade with those obtained with traditional use of external pressure. This retrospective cohort ...
Ott Christian - - 2013
This study investigated the effect of renal denervation (RDN) in patients with treatment resistant hypertension according to the established definition (JNC VII and ESH/ESC guidelines), i.e. office blood pressure (BP) ≥140/90 mm Hg (with at least three antihypertensive drugs, including a diuretic, in adequate doses) and confirmed by 24-hour ambulatory ...
Kiuchi Márcio Galindo - - 2013
Evaluation of the safety and efficacy of renal denervation with a standard irrigated cardiac ablation catheter (SICAC) in chronic kidney disease (CKD) patients with refractory hypertension. Twenty-four patients were included and treated with a SICAC. Denervation was performed by a single operator following the standard technique. Patients included with CKD ...
Worthley Stephen G - - 2013
AIMS: Catheter-based renal artery sympathetic denervation has emerged as a novel therapy for treatment of patients with drug-resistant hypertension. Initial studies were performed using a single electrode radiofrequency catheter, but recent advances in catheter design have allowed the development of multi-electrode systems that can deliver lesions with a pre-determined pattern. ...
Russian Chris - - 2013
BACKGROUND:: Current AARC clinical practice guidelines (CPGs) recommend a suction catheter to endotracheal tube (SC:ETT) ratio based on a comparison between the external diameter of the suction catheter and the internal diameter (ID) of the ETT. A SC:ETT ratio of less than 50% is consistent with the current recommendation. We ...
Palazzo S G C - - 2013
Suctioning is essential in managing tracheal tubes, but also has drawbacks. Using a bench model, we demonstrated the extent and time course of pressure changes during suctioning, examined their relationship with tracheal tube and catheter diameters and assessed the effects of artificial 'sputum' and of compensatory gas flow in the ...
Yang Jeong Hoon - - 2013
Percutaneous catheter-based therapy has recently been introduced to decrease blood pressure by ablation of efferent and afferent sympathetic renal nerves. The patient described here had a seven-year history of hypertension and presented with poorly controlled blood pressure despite antihypertensive therapy with four different drugs. A 44-yr-old man underwent percutaneous renal ...
Potthoff Sebastian A - - 2013
Renal denervation (RDN) as a catheter-based procedure was introduced in 2009. As a reinvention of an old concept this approach in treating resistant hypertension has been gathering an unprecedented momentum in the world of hypertension. The incredible success in introducing this technique, followed by its quick and wide distribution, introduced ...
Ukena Christian - - 2013
Catheter-based renal denervation (RDN) leads to a considerable decrease of blood pressure in the vast majority of patients with resistant hypertension. However, only minor or no blood pressure change is achieved in some patients. This non-reponse is defined as a reduction of office systolic blood pressure of less than 10 ...
Schmieder Roland E - - 2013
Out of the overall hypertensive population it is estimated that approximately 10% have treatment resistant hypertension (TRH). Percutaneous catheter-based transluminal renal ablation (renal denervation [RDN] by delivery of radiofrequency energy) has emerged as a new approach to achieve sustained blood pressure reduction in patients with TRH. This innovative interventional technique ...
Zareen Zunera - - 2013
A variety of suction catheters (type, size and design) are recommended for oropharyngeal suctioning of meconium during newborn resuscitation, but it is not known which performs best. In this study we compared different sizes of soft catheters, the Yankauer (YK) and the portable bulb syringe (BS), in suctioning a solution ...
El Ahmadieh Tarek Y - - 2013
Surgical techniques that address elevated intracranial pressure include (1) intraventricular catheter insertion and cerebrospinal fluid drainage, (2) removal of an intracranial space-occupying lesion, and (3) decompressive craniectomy. This review discusses the role of surgery in the management of elevated intracranial pressure, with special focus on intraventricular catheter placement and decompressive ...
Asif Arif - - 2013
A retrospective study evaluating the pattern of blood pressure and its related complications before, during, and after percutaneous hemodialysis interventions was performed in patients presenting with asymptomatic hypertension. Hemodialysis patients undergoing percutaneous interventions including tunneled hemodialysis catheter insertion, percutaneous balloon angioplasty and thrombectomy procedure, and stage II hypertension (systolic blood ...
Sharman J E - - 2013
Blood pressure (BP) is conventionally measured by cuff at the brachial artery as an indication of pressure experienced by the organs. However, individual variation in pulse pressure amplification means that brachial cuff BP may be a poor representation of true central BP. Estimation of central BP is now possible using ...
Simon Scott Douglas - - 2013
BACKGROUND: The Penumbra system uses a coaxial separator and continuous extracorporeal suction to remove a clot from a cerebral artery. Forced-suction thrombectomy (FST) involves aspirating clots through the same reperfusion catheter using only a syringe, decreasing the procedure time and supplies needed. OBJECTIVE: To evaluate multiple combinations of catheters and ...
Togashi Kei - - 2013
BACKGROUND:Inadvertent arterial placement of a large-bore catheter during attempted placement of a central venous catheter (CVC) occurs at a rate of 0.1% to 1.0% and may result in hemorrhage, pseudoaneurysm, stroke, or death. Ultrasound guidance or observation of color and pulsatility of blood are not reliable methods for avoiding this ...
Clarett M - - 2013
OBJECTIVE: To determine whether there are differences between subglottic pressure during swallowing with and without air insufflation via a subglottic catheter in tracheostomized patients. DESIGN: A prospective, randomized cross-over study was made. SETTING: Adult Intensive Care Units. PARTICIPANTS: Patients requiring mechanical ventilation and tracheostomy with a subglottic catheter, and with ...
Mueller Bruce A - - 2013
This proof of concept pilot study was performed to determine whether vibration can increase solute clearance when applied to an in vitro dialysis model. Urea, creatinine, gentamicin, and vancomycin transmembrane clearances were calculated at a blood flow rate of 200 ml/min, dialysate flow rates of 2 and 8 L/hr, and ...
You Shujie - - 2013
A high-pressure study of a synthetic smectite (Na-fluorohectorite) immersed in liquid media was performed using in situ synchrotron X-ray diffraction in a diamond anvil cell. A reversible phase transition because of the insertion of an additional water layer was observed for this material at 1.7 GPa. No similar transition was ...
Kutty Shelby - - 2013
Background: The admittance and Wei's equation is a new technique for ventricular volumetry to determine pressure-volume relations that addresses traditional conductance related issues of parallel conductance and field correction factor. These issues with conductance have prevented researchers from obtaining real-time absolute ventricular volumes. Moreover, the time consuming steps involved in ...
1 2 3 4 5 6 7 8 9 10 >