Search Results
Results 1 - 50 of 1703
1 2 3 4 5 6 7 8 9 10 >
Gosselin Jacinthe J http://orcid.org/0000-0002-0161-1343 Département de biologie, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Quebec, Canada J1K 2R1 - - 2015
There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover. We aimed to evaluate the relative importance of direct and indirect effects of hunting via SSI on the population dynamics of the Scandinavian ...
Sato Shoichiro S From The George Institute for Global Health (S.S., H.A., Y.H., E.H., C.D., R.I.L., J.C., C.S.A.), the University of Sydney and Royal Prince Alfred Hospital, Sydney, Australia; Department of Neurology (R.B.), Innsbruck Medical University, Austria; Department of Neurology (Y.L., J.Z.), Baotou Central Hospital, China; Center for Stroke Research Berlin (E.J.), Charité-University Medicine Berlin, Germany; The Shanghai Institute of Hypertension (J.W.), Ruijin Hospital, Shanghai Jiaotong University, China; Servicio de Neurología (P.M.L.), Departamento de Medicina, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile; and Department of Cardiovascular Sciences (T.R.), Leicester Royal Infirmary, University of Leicester, - - 2014
The prognostic importance of the speed of early hematoma growth in acute intracerebral hemorrhage (ICH) has not been well established. We aimed to determine the association between the rate of increase in hematoma volume and major clinical outcomes in the Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial (INTERACT) ...
Wolf Rachel B RB Vanderbilt University School of Medicine, Vanderbilt University Medical Center Nashville, - - 2014
Individuals with sickle cell anemia (SCA) exhibit delayed growth trajectories and lower blood pressure measurements than individuals without SCA. We evaluated factors associated with height, weight and blood pressure and established reference growth curves and blood pressure tables using data from the Silent Infarct Transfusion (SIT) Trial (NCT00072761). Quantile regression ...
Maddison Kathleen J KJ Centre for Sleep Science, School of Anatomy, Physiology and Human Biology, The University of Western Australia, Crawley, WA, Australia; West Australian Sleep Disorders Research Institute, Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, WA, - - 2014
Catheters that traverse the pharynx are often in place during clinical or research evaluations of upper airway function. The purpose of this study was to determine whether the presence of such catheters affects measures of upper airway collapsibility itself. To do so, pharyngeal critical closing pressure (Pcrit) and resistance upstream ...
Hatz Lea-Annina LA Section of Anaesthesiology, Equine Department, Vetsuisse Faculty University of Zurich, Zurich, - - 2014
To assess accuracy of noninvasive blood pressure (NIBP) measured by oscillometric device Sentinel compared to invasive blood pressure (IBP) in anaesthetized horses undergoing surgery. To assess if differences between the NIBP measured by the Sentinel and IBP are associated with recumbency, cuff placement, weight of the horse or acepromazine premedication ...
Nongnuch Arkom A UCL Center for Nephrology, Royal Free Hospital, University College London Medical School, London, - - 2014
Recently, intradialytic hypertension was reported to be associated with increased mortality for hemodialysis patients. To determine whether volume status plays a role in dialysis-associated hypertension, we prospectively audited 531 patients that had volume assessments measured by multiple-frequency bioelectrical impedance during their midweek dialysis session. Mean pre- and postdialysis weights were ...
Li Huijie H Department of Cardiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University , Chongqing , - - 2014
Abstract Objective: Renal denervation is a novel method for hypertension treatment. In this study, we aimed to investigate the safety and efficacy of radiofrequency ablation (RFA) at ablation temperatures of 45 °C or 50 °C and its possible mechanisms. Methods: A hypertensive canine model was established by abdominal aortic constriction in 20 ...
Hamza Mohamed M Department of Cardiology, Ain Shams University, Cairo, - - 2014
Among the Egyptian population with essential hypertension, a minority are under control (systolic pressure <140 mmHg and diastolic pressure <90 mmHg), despite the use of multiple antihypertensive medications. In this article, we describe our experience with percutaneous treatment using renal artery radiofrequency (RF) ablation. To evaluate the feasibility, efficacy, and safety of ...
Baruch Martin C - - 2014
There is a significant need for continuous noninvasive continuous blood pressure (cNIBP) monitoring, especially for anesthetized surgery and ICU recovery. cNIBP systems could lower costs and expand the use of continuous blood pressure monitoring, lowering risk and improving outcomes.The test system examined here is the CareTaker(R) and a pulse contour ...
Frascone Ralph J RJ Department of Emergency Medicine, Regions Hospital, St. Paul, - - 2014
In emergent situations, access to the vascular bed is frequently required for fluid and medication administration. Central venous catheter placement is associated with risk and may slow resuscitation in the unstable patient. The purpose of this study was to determine whether intraosseous pressure (IOP) could be consistently recorded and how ...
Shen Yang Y Faculty of Kidney Diseases, Capital Medical University, Beijing 100050, - - 2014
It has been argued that the benefits of reducing sodium loading may be offset by increased activation of the renin-angiotensin-aldosterone system (RAAS) and sympathetic nervous system. This study aimed to investigate the long-term effects of an increase in dialysis sodium removal on circulating RAAS and sympathetic system in hypertensive hemodialysis ...
Wang Mei-Lian - - 2014
We previously reported the use of a catheter system to damage the tricuspid valve and create infectious endocarditis (IE) in an animal model. The current study aims to create a faint IE model suitable for antibiotic prophylaxis using a low bacterial inoculum. We also aim to explore a way to ...
Papademetriou Vasilios V From the Veterans Affairs and Georgetown University Medical Centers, Washington, DC (V.P.); The First Cardiology Clinic, University of Athens, Ippokration Hospital, Athens, Greece (V.P., C.P.T.); Department of Cardiology, Flinders University, Bedford Park, Australia (A.S., D.P.C.); Monash Heart and Monash University, Melbourne, Australia (I.T.M., Y.M.); Royal Adelaide Hospital, Adelaide, Australia (M.I.W.); and University of Adelaide, Adelaide, Australia (S.G.W.). - - 2014
Renal denervation has emerged as a novel approach for the treatment of patients with drug-resistant hypertension. To date, only limited data have been published using multielectrode radiofrequency ablation systems. In this article, we present the 12-month data of EnligHTN I, a first-in-human study using a multielectrode ablation catheter. EnligHTN I ...
de Vecchi Adelaide - - 2014
Accurate measurement of blood pressure is important because it is a biomarker for cardiovascular disease. Diagnostic catheterization is routinely used for pressure acquisition in vessels despite being subject to significant measurement errors. To investigate these errors, this study compares pressure measurement using two different techniques in vitro and numerical simulations. ...
Wei Abraham E AE Department of Anesthesiology and Pain Medicine, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, MA, 02135, - - 2014
Most applications of pressure-volume conductance catheter measurements assess cardiovascular function at a single point in time after genetic, pharmacologic, infectious, nutritional, or toxicologic manipulation. Use of these catheters as a continuous monitor, however, is fraught with complexities and limitations. Examples of the limitations and optimal use of conductance catheters as ...
Rotman Oren M OM Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, 69978, Tel Aviv, Israel, - - 2014
The advantage of measuring differential pressure using fluid-filled catheters is that the system is relatively inexpensive, but the readings are not accurate and affected by the common mode pressure (CMP) distortion. High accuracy differential pressure measurements are required in various biomedical applications, such as in fluid-dynamic test rigs, or in ...
Korovesis Socrates S Department of Cardiology, Athens Euroclinic, Athens, - - 2014
Renal sympathetic hyperactivity is vital for the maintenance and progression of essential hypertension. Catheter-based renal denervation is an evolving concept with favourable results regarding the control of hypertension; however, clinical experience is still limited. We enrolled 15 patients with resistant hypertension who underwent percutaneous, catheter-based radiofrequency treatment for renal artery ...
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 ...
Granjeiro Erica Maria EM Department of Physiology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, SP, - - 2014
The central nucleus of amygdala plays an important role mediating fear and anxiety responses. It is known that oxytocin microinjections into the central nucleus of amygdala induce hypergrooming, an experimental model of compulsive behavior. We evaluated the behavioral and cardiorespiratory responses of conscious rats microinjected with oxytocin into the central ...
Feng Yuxia Y Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, People's Republic of - - 2014
To improve the growth rate and crystal quality of AlN, the competitive growth mechanisms of AlN under different parameters were studied. The mass transport limited mechanism was competed with the gas-phase parasitic reaction and became dominated at low reactor pressure. The mechanism of strain relaxation at the AlN/Si interface was ...
Schedler Martina M Institute of Technical Biocatalysis, Hamburg University of Technology, Hamburg 21073, - - 2014
The blowout of the Deepwater Horizon in the Gulf of Mexico in 2010 occurred at a depth of 1500 m, corresponding to a hydrostatic pressure of 15 MPa. Up to now, knowledge about the impact of high pressure on oil-degrading bacteria has been scarce. To investigate how the biodegradation of crude oil ...
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 ...
Ozkahya Mehmet M Department of Nephrology, Ege University Medical Faculty, Bornova , Izmir, - - 2013
Hypertension is very common in dialysis patients. The most important cause of hypertension is hypervolemia. Fluid restriction and volume management with standard hemodialysis are effective strategies to achieve dry weight and blood pressure control without use of antihypertensive drugs. If the captopril test is positive, a renin-angiotensin system blocker should ...
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 MF Neurosurgical Service of Western Australia, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, 6009 Perth, Australia; School of Surgery, The University of Western Australia, 35 Stirling Highway, Crawley, 6009 Perth, Australia. Electronic address: - - 2014
Acute convection-enhanced delivery (CED) is a neurosurgical delivery technique that allows for precise and uniform distribution of an infusate to a brain structure. It remains experimental due to difficulties in ensuring successful delivery. Real-time monitoring is able to provide immediate feedback on cannula placement, infusate distribution, and if the infusion ...
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, ...
Boone Brian A BA Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, - - 2013
Central venous pressure (CVP) is traditionally obtained through subclavian or internal jugular central catheters; however, many patients who could benefit from CVP monitoring have only femoral lines. The accuracy of illiac venous pressure (IVP) as a measure of CVP is unknown, particularly following laparotomy. This was a prospective, observational study. ...
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 ...
1 2 3 4 5 6 7 8 9 10 >