Search Results
Results 51 - 100 of 1557
1 2 3 4 5 6 7 8 9 10 >
Rysnik Maja K - - 2013
OBJECTIVE: To compare high definition oscillometry (HDO) to invasive blood pressure measurement in anaesthetized dogs. STUDY DESIGN: Prospective, clinical trial. ANIMALS: Fifty dogs weighing 1.95-79 kg (mean 23.5 kg). MATERIALS AND METHODS: Anaesthetic and peri-anaesthetic management was chosen according to each dog's physical status and anaesthetist's preference. Direct arterial blood pressure measurements ...
Vaughan Neil - - 2013
The amount of pressure exerted on the syringe and the depth of needle insertion are the two key factors for successfully carrying out epidural procedure. The force feedback from the syringe plunger is helpful in judging the loss of pressure, and the depth of the needle insertion is crucial in ...
Ozer A B - - 2013
Context: Endotracheal tube cuff pressure (ETCP) is recommended to be maintained between 20-30 cm H2O limits. While insufficient inflation of ETC may cause aspirations, over-inflation of it may lead to damage in tracheal epithelium. Aims: We planned to investigate the effects of user experience and cuff pressure inflation method differences ...
Ypsilantis P - - 2013
This study was designed to evaluate the oscillometric technique for intermittent non-invasive measurement of arterial pressure (AP) in the anaesthetized pig. In six pigs under sevoflurane anaesthesia, intermittent (every 2 minutes) oscillometric measurements of AP made at a forelimb (FL), a hindlimb (HL) and the tail base were compared with ...
Toyama S - - 2013
BACKGROUND: /st>Hypotension during spinal anaesthesia for Caesarean delivery is a result of decreased vascular resistance due to sympathetic blockade and decreased cardiac output due to blood pooling in blocked areas of the body. Change in baseline peripheral vascular tone due to pregnancy may affect the degree of such hypotension. The ...
Gruenewald M - - 2013
BACKGROUND: /st>Measurement of the balance between nociception and anti-nociception during anaesthesia is challenging and not yet clinically established. The Surgical pleth index (SPI), derived from photoplethysmography, was proposed as a surrogate measure of nociception. Recently, the analgesia nociception index (ANI) derived by heart rate (HR) variability was developed. The aim ...
Koeva Vesselina - - 2013
PURPOSE: Multiple sclerosis (MS) is a chronic inflammatory and degenerative disease of the central nervous system resulting in demyelination and axonal injury. Epidural blood patch (EBP) to treat postdural puncture headache (PDPH) in an MS patient may be of concern because of the potential for this to interfere with axonal ...
Obasuyi B I - - 2013
BACKGROUND: Hypotension during spinal anaesthesia occurs commonly in parturients. By influencing spread of local anaesthetic, maternal position may affect the speed of onset of sensory block and thus the haemodynamic effects. The aim of this study was to determine whether inducing spinal anaesthesia for caesarean section using plain bupivacaine in ...
Arany-Tóth Attila - - 2013
OBJECTIVE: To measure subarachnoid pressures, systemic circulatory and respiratory effects, and to calculate cerebral perfusion pressure during cisternal myelography. STUDY DESIGN: Prospective clinical study. ANIMALS: Forty-three client owned dogs with clinical signs of spinal disease, weighing 6-56 kg. METHODS: Dogs were premedicated with butorphanol and diazepam intravenously (IV) and anaesthesia was ...
Bradbrook Carl A CA Davies Veterinary Specialists, Higham Gobion, UK. - - 2013
The aim of this study was to investigate normal values for the dynamic compliance of the respiratory system (Crs) and respiratory system resistance (Rrs) in mechanically ventilated anaesthetized dogs. Prospective clinical study. Forty healthy dogs undergoing elective orthopaedic surgery. Body weight was (mean ± SD) 26.8 ± 10.7 kg (range: ...
Samhan Yasser M - - 2013
We are introducing a new continuous hydrostatic pressure system for identification and catheterization of epidural space in adults. One hundred and eight patients scheduled for elective endoscopic urological procedures were enrolled in this prospective randomized study. They were assigned to perform loss of resistance epidural technique by either the conventional ...
Wallon G - - 2013
BACKGROUND: /st>Tidal volume (V(T)) must be accurately delivered by anaesthesia ventilators in the volume-controlled ventilation mode in order for lung protective ventilation to be effective. However, the impact of fresh gas flow (FGF) and lung mechanics on delivery of V(T) by the newest anaesthesia ventilators has not been reported. METHODS: ...
Shimada Akiko - - 2013
A single intake of monosodium glutamate (MSG) may cause headache and increased muscle sensitivity. We conducted a double-blinded, placebo-controlled, crossover study to examine the effect of repeated MSG intake on spontaneous pain, mechanical sensitivity of masticatory muscles, side effects, and blood pressure. Fourteen healthy subjects participated in 5 daily sessions ...
Gautam Shefali - - 2013
Takayasu arteritis is a rare, chronic idiopathic, occlusive inflammation of the aorta and its major branches. It is a rare form of non-specific obliterative panarteritis of unknown aetiology. Anaesthesia for the patient with Takayasu arteritis is complicated by severe uncontrolled hypertension leading to end organ dysfunction, stenosis of major blood ...
Pai Rohini V Bhat - - 2013
Hypertrophic obstructive cardiomyopathy (HOCM) is a challenge to anesthesiologists due to the complex pathophysiology involved and various perioperative complications associated with it. We present a 50-year-old man, a known case of HOCM, who successfully underwent emergency haemostasis, and debridement of the traumatically amputated right upper limb and the contused lacerated ...
Narasimha Prasad Krishnamurthy - - 2013
Takayasu's arteritis (TA) is rare, chronic progressive, pan-endarteritis involving the aorta and its main branches, with a specific predilection for young Asian women. Anaesthesia for TA patients is complicated by their severe uncontrolled hypertension, extreme arterial blood pressure differentials, aortic regurgitation (AR), end-organ dysfunction, stenosis/aneurysms of major blood vessels and ...
Al-Abed Yahya A - - 2013
To conduct a study to measure the pressure effects of the different scrotal supports applied on a simulated expanding scrotal hematoma. We created a model of an expanding hematoma with simultaneous pressure recording using a urodynamics system. Pressures were recorded independently first without application of any support. Then, three types ...
Shahzad Khurrum - - 2013
To compare the effect of induction position on block characteristics (sensory and motor nerves) and haemodynamic stability in elderly patients with isobaric bupivacaine. Patient comfort was also looked at. The randomized single blinded study was conducted at the Aga Khan University Hospital, Karachi, from September 2007 to August 2008. A ...
Pavlidou Kiriaki - - 2013
The diaphragm is the main inspiratory muscle and the main indicator of diaphragmatic contractility is the trans-diaphragmatic pressure (Pdi). The aim of this clinical study was to determine the effect of four different anaesthetic protocols on Pdi in anaesthetized healthy dogs. Eighty client-owned dogs were recruited in this clinical study. ...
Graffagnino Carmelo - - 2013
Background: Intracerebral hemorrhage (ICH) causes 10-15% of primary strokes, with mortality related to hematoma volume. Blood pressure (BP) reduction may attenuate hematoma expansion. ACCELERATE (the Evaluation of Patients with Acute Hypertension and Intracerebral Hemorrhage with Intravenous Clevidipine Treatment) is a pilot study representing the first evaluation of safety and efficacy ...
Hoseini Mohammad - - 2013
The widespread use of trichloroethylene (TCE) and its frequent release into the environment has caused many environmental and health problems. In this study the degradation of TCE at different micromolar concentrations was investigated in a stainless steel reactor with various concentrations of H2O2 and TiO2 at different oxygen pressures and ...
Nakashima Yutaka Y Department for Support Rural Medicine, Yamaguchi Grand Medical Center, - - 2013
It is necessary to establish an effective subcutaneous injection procedure for adult and elderly individuals because many drugs such as hormones and interferon are generally delivered by subcutaneous injection. We tested whether pain during subcutaneous injection can be decreased by prior application of localized manual pressure at the injection site. ...
Adami Chiara C Department of Veterinary Clinical Science, Anesthesiology and Pain Therapy Division, Vetsuisse Faculty, University of Berne, Länggasstraße 124, 3012 Berne, - - 2013
The use of pressure waves to confirm the correct position of the epidural needle has been described in several domestic species and proposed as a valid alternative to standard methods, namely, control radiographic exam and fluoroscopy. The object of this retrospective clinical study was to evaluate the sensitivity of the ...
Omerbegovic Meldijana M Clinic of Anaesthesia, Resuscitation and Intensive Care, University Clinical Centre Sarajevo, Bosnia and Herzegovina. - - 2013
Alterations of the parameters of heart rate variability, phenomenon associated with autonomic nervous system balance, have been shown as a possibly very important factor for monitoring of cardiocirculatory system in the perioperative period. Periinduction period of general anaesthesia is very important with significant changes of haemodynamics what could be reflected ...
Byon H-J - - 2012
BACKGROUND: /st>The purpose of this study was to evaluate the clinical usefulness of static and dynamic variables for the prediction of fluid responsiveness in children under general anaesthesia. METHODS: /st>Thirty-three mechanically ventilated children received 10 ml kg(-1) colloid for 10 min while stable during surgery. Arterial pressure, heart rate, central ...
Mengistu M - - 2012
Moringa stenopetala, Baker f. (Moringaceae) is used for food and medicine in Southern Ethiopia. To substantiate the hypotensive effect of M. stenopetala in vivo and in vitro. An in vivo experiment was carried out on male guinea pigs anaesthetized with pentobarbital. The arterial blood pressure was recorded from a carotid ...
Gayat E - - 2012
BACKGROUND: CNAP(®) provides continuous non-invasive arterial pressure (AP) monitoring. We assessed its ability to detect minimal and maximal APs during induction of general anaesthesia and tracheal intubation. METHODS: Fifty-two patients undergoing surgery under general anaesthesia were enrolled. Invasive pressure monitoring was established at the radial artery, and CNAP monitoring using ...
McWilliams R Stewart - - 2012
Magnesium oxide (MgO) is representative of the rocky materials comprising the mantles of terrestrial planets, such that its properties at high temperatures and pressures reflect the nature of planetary interiors. Shock-compression experiments on MgO to pressures of 1.4 TPa reveal a sequence of two phase transformations: (i) from B1 (NaCl) ...
Shimmen Teruo - - 2012
By taking advantage of large cell size of Chara corallina, we analyzed the membrane depolarization induced by decreased turgor pressure (Shimmen in J Plant Res 124:639-644, 2011). In the present study, the response to increased turgor pressure was analyzed. When internodes were incubated in media containing 200 mM dimethyl sulfoxide, their ...
Radaelli Alberto - - 2012
ABSTRACT: The assessment of baroreflex function since the first appearance of endotoxemia is important because the arterial baroreflex should exert a protective role during sepsis. Nevertheless contrasting results were previously reported. This could be due to the hemodynamic instability characterizing this condition that may per se interfere with reflex cardiovascular ...
Patel Chirag Ramanlal - - 2012
Dexmedetomidine, an α2 agonist, when used as an adjuvant in general anaesthesia attenuates stress response to various noxious stimuli, maintains perioperative haemodynamic stability and provides sedation without significant respiratory depression postoperatively. Sixty patients were randomly divided into two groups of 30 each. In group A, fentanyl 2 μg/kg and in ...
Drury Paul P - - 2012
Dopamine is commonly used for blood pressure support in the neonate, but has limited empirical evidence to support its use. We tested the hypothesis that after near-terminal asphyxia in utero, dopamine infusions would prevent secondary hypotension. Fetal sheep (122-129 days of gestation, term is 147 days) received umbilical cord occlusion ...
Sia A T H - - 2012
Hypotension occurs in most caesarean sections under spinal anaesthesia, necessitating vasopressor administration. However, the optimal dosing regimen remains unclear. We have developed a novel vasopressor delivery system that automatically administers phenylephrine or ephedrine based on continuous non-invasive blood pressure monitoring. This prospective cohort study recruited 55 healthy women under standardised ...
Ngan Kee W D - - 2012
BACKGROUND: /st>Closed-loop feedback computer-controlled infusion has not been described for administering phenylephrine to maintain arterial pressure (AP) during spinal anaesthesia for Caesarean delivery. We aimed to compare AP control using this automated system with a previously described manual infusion system. METHODS: /st>We randomly allocated 222 healthy subjects having spinal anaesthesia ...
Seliškar Alenka - - 2012
Objective  To use the American College of Veterinary Internal Medicine (ACVIM) validation criteria to evaluate the performance of high definition oscillometric (HDO) and Doppler blood pressure measurement techniques against invasive blood pressure measurements in anaesthetized dogs. Study design  Prospective clinical study. Animals  Twenty client-owned dogs. Materials and Methods  Invasive blood ...
Quinn Christopher T - - 2012
Objective  Evaluation of the accuracy of Masimo signal extraction technology (SET) pulse oximetry in anaesthetized late gestational pregnant sheep. Study design  Prospective experimental study. Animals  Seventeen pregnant Merino ewes. Methods  Animals included in study were late gestation ewes undergoing general anaesthesia for Caesarean delivery or foetal surgery in a medical ...
Koga Masatoshi - - 2012
OBJECTIVE:: Optimal blood pressure (BP) control in acute intracerebral hemorrhage (ICH) remains controversial. We determined the effects of SBP lowering to 160 mmHg or more using intravenous nicardipine for acute ICH patients. METHODS:: This is a prospective, multicenter, observational study conducted in Japan, with the lack of control groups. Patients with ...
Richardson Peter B - - 2012
The mode of ventilation used during awake extubation has not previously been studied. We conducted a randomised controlled trial comparing spontaneous respiration, intermittent positive pressure ventilation, and pressure support ventilation (each n = 13) for incidence and severity of peri-extubation complications following routine elective surgery. We found the severity of ...
Viterbo João F - - 2012
CONTEXT: Haemodynamic stability during induction is a cornerstone of cardiac anaesthesia. The evaluation of pharmacokinetic models for propofol during induction is lacking. OBJECTIVE: To compare haemodynamics during cardiac anaesthesia induction with two pharmacokinetic models. DESIGN: Randomised controlled trial. SETTING: Department of Cardiothoracic Surgery, São João Hospital; July to December 2010. ...
Hwang Sung-Kyun - - 2012
The authors performed a multicenter prospective study to evaluate the feasibility and safety of intravenous nicardipine hydrochloride for acute hypertension in patients with intracerebral hemorrhage (ICH). This study included 88 patients (mean age: 58.3 yr, range 26-87 yr) with ICH and acute hypertension in 5 medical centers between August 2008 ...
Averina Viktoria A VA University of Minnesota, Department of Mathematics, Minneapolis, MN, - - 2012
A conceptually novel mathematical model of neurogenic angiotensin II-salt hypertension is developed and analysed. The model consists of a lumped parameter circulatory model with two parallel vascular beds; two distinct control mechanisms for both natriuresis and arterial resistances can be implemented, resulting in four versions of the model. In contrast ...
Müller-Fielitz Helge - - 2012
Plasma aldosterone levels correlate positively with obesity, suggesting a link between the hypertension associated with obesity and increased mineralocorticoid levels. We tested the hypothesis that aldosterone is involved in the BP response to angiotensin II (AngII) in obese rats. Lean (LZR) and obese (OZR) Zucker rats were treated with AngII ...
Anwar M A - - 2012
High blood pressure is responsible for the modulation of blood vessel morphology and function. Arterial hypertension is considered to play a significant role in atherosclerotic ischaemic heart disease, stroke and hypertensive nephropathy, whereas high venous pressure causes varicose vein formation and chronic venous insufficiency and contributes to vein bypass graft ...
Richard Normand A - - 2012
The presence of differences in physiological response to a lowered inspired Po2 mediated by hypobaric hypoxia (HH) or normobaric hypoxia (NH) is controversial. This review examines the brief, acute, and subacute respiratory, cardiovascular, and subjective symptom response to intermediate and severe hypoxic exposure in NH and HH. Brief exposures lead ...
Omosofe F O - - 2012
Electroconvulsive therapy provokes abrupt changes in systemic haemodynamics. We compared the effects of propofol and thiopentone on haemodynamic responses of patients scheduled for ECT between September 2008 and March 2009 in two Nigerian tertiary hospitals. In a prospective, randomized study, 40 patients scheduled for ECT were allocated into 2 groups ...
Monnet X - - 2012
BACKGROUND: /st>We evaluated the ability of an infrared photoplethysmography arterial waveform (continuous non-invasive arterial pressure, CNAP) to estimate arterial pulse pressure variation (PPV). We compared the ability of non-invasive PPV to predict fluid responsiveness with invasive PPV, respiratory variation of pulse contour-derived stroke volume, and changes in cardiac index induced ...
Barodka Viachaslau - - 2012
Since the introduction of the first Angiotensin-converting enzyme inhibitor (ACEI) captopril in 1981, ACE inhibitors have become a mainstay of anti-hypertensive therapy. In addition to lowering BP, there is overwhelming evidence that ACE inhibitors (and angiotensin-receptor blockers (ARB)) provide end organ protection independent of blood their pressure lowering properties in ...
Martínez-Revelles Sonia - - 2012
Aims: This study evaluates a possible relationship between reactive oxygen species (ROS) and cyclooxygenase (COX)-2-derived products in conductance and resistance arteries from hypertensive animals. Angiotensin II infused mice or spontaneously hypertensive rats (SHR) treated with the NAD(P)H Oxidase inhibitor apocynin, the mitochondria-targeted SOD2 mimetic mito-TEMPO, the superoxide dismutase analogue tempol, ...
Rollinger B - - 2012
A miniature fast response high temperature pressure probe, with demonstrated use in liquid metals up to 255 °C (528 K), has been developed. Innovative packaging technologies have been applied to integrate a conventional piezoresistive silicon pressure sensor into the probe, without the need of an auxiliary water-cooling system. In situ static ...
Sun Tao - - 2012
Sub-harmonic response from ultrasound contrast agent microbubbles has been demonstrated to be an effective modality for noninvasive pressure measurement. In the present study, the dependence of ultra-harmonic response on the ambient overpressure was investigated by both experimental measurements and simulations. In the measurements, the microbubbles were exposed to Gaussian pulses ...
1 2 3 4 5 6 7 8 9 10 >