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Results 101 - 150 of 1270
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Trim Cynthia M - - 2013
OBJECTIVE: To determine the accuracy of an oscillometric blood pressure monitor in anesthetized sheep. STUDY DESIGN: Prospective study. ANIMALS: Twenty healthy adult sheep, 11 males and nine females, weighing 63.6 ± 8.6 kg. METHODS: After premedication with buprenorphine or transdermal fentanyl, anesthesia was induced with ketamine-midazolam and maintained with isoflurane and ketamine, 1.2 mg kg(-1) ...
Michalczyk Kathryn - - 2013
OBJECTIVE:: Ketamine has a long history of use during pediatric procedural sedation. Concerns about raising intracranial pressure may limit use in certain situations. Whereas some data suggest that benzodiazepine coadministration may blunt this response, pediatric data during procedural sedation do not exist. We evaluated the effects of midazolam pretreatment on ...
Crumley Mariana N - - 2013
Objective-To compare the effects of 2 fractions of inspired oxygen, 50% and > 95%, on ventilation, ventilatory rhythm, and gas exchange in isoflurane-anesthetized horses. Animals-8 healthy adult horses. Procedures-In a crossover study design, horses were assigned to undergo each of 2 anesthetic sessions in random order, with 1 week separating ...
Park Jong Taek - - 2013
For ophthalmic surgery anesthesia, it is vital that intraocular pressure (IOP) is controlled. Most anesthetic drugs affect IOP dose-dependently, and inhalational anesthetics dose-dependently decrease IOP. In this study, we compared the effects of desflurane and sevoflurane on IOP and hemodynamics in pediatric ophthalmic surgery. Thirty eight pediatric patients from the ...
Paré Monique M Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA. - - 2013
To test whether partial pressure of CO2 in expired gas (PĒCO2) predicts the partial pressure of CO2 in arterial blood (PaCO2) in apneic chickens during air sac insufflation anesthesia at three different ventilation states. To determine the PĒCO2 at which apnea occurs during air sac insufflation anesthesia. Randomized cross-over study. ...
Kanaya Akihiro - - 2013
BACKGROUND: Low fraction of inspired oxygen (F(I)O(2)) reduces the atelectasis area during anesthesia induction. However, atelectasis may occur during laryngoscopy and endotracheal intubation because lungs can collapse within a fraction of a second. We assessed the effects of ventilation with 100 and 40 % oxygen on functional residual capacity (FRC) in ...
Dorantes Mendez Guadalupe - - 2013
The aim of this paper is to compare baroreflex sensitivity (BRS) following anesthesia induction via propofol to pre-induction baseline values through a systematic and mathematically robust analysis. Several mathematical methods for BRS quantification were applied to pre-operative and intra-operative data collected from patients undergoing major surgery, in order to track ...
Acierno Mark J - - 2013
OBJECTIVE: To determine if an oscillometric device optimized for use in dogs produces systolic, diastolic, and mean arterial pressures (MAPs) measurements that are in good agreement with directly obtained pressures DESIGN: Prospective study. SETTING: University teaching hospital. ANIMALS: Twenty-one dogs under general anesthesia for surgical procedures. INTERVENTIONS: A 20-Ga catheter ...
Kako Hiromi - - 2013
Neuroblastomas are the most common, non-central nervous system tumor of childhood. Similar to pheochromocytomas, they are derived from neural crest cells and therefore retain the potential to synthesize catecholamines. Unlike pheochromocytomas, however, perioperative issues related to blood pressure instability with hypertension are uncommon. We report details of a 3-year-old child ...
Nair Bala G - - 2013
Blood pressure monitoring during anesthesia is an American Society of Anesthesiology standard. However, the anesthesia provider sometimes fails to engage the patient monitor to make periodic (generally every 3-5 min) measurements of Non-Invasive Blood Pressure (NIBP), which can lead to extended periods (>5 min) when blood pressure is not monitored. We describe ...
Alexander B S BS Irvine School of Medicine, University of California, Irvine, CA, - - 2013
While the decrease in blood carbon dioxide (CO2 ) secondary to hyperventilation is generally accepted to play a major role in the decrease of cerebral tissue oxygen saturation (SctO2 ), it remains unclear if the associated systemic hemodynamic changes are also accountable. Twenty-six patients (American Society of Anesthesiologists I-II) undergoing ...
Hawkins Michelle G - - 2013
Objective-To evaluate the effects of dorsal versus lateral recumbency on the cardiopulmonary system during isoflurane anesthesia in red-tailed hawks (Buteo jamaicensis). Animals-6 adult 1.1- to 1.6-kg red-tailed hawks. Procedures-A randomized, crossover study was used to evaluate changes in respiratory rate, tidal volume, minute ventilation, heart rate, mean arterial and indirect ...
Bhardwaj Neerja - - 2013
Maintaining systolic blood pressure (SBP) at 100% of baseline is best for fetal and maternal outcome. We hypothesized that irrespective of the vasopressor used, maintaining SBP at 100% of baseline with phenylephrine (P), metaraminol (M), or ephedrine (E) will produce the best fetal pH after cesarean section (LSCS) under subarachnoid ...
Sharma Bimla - - 2013
The ProSeal™ laryngeal mask (PLMA) is increasingly being used as an airway device for laparoscopic surgery. Its silicone cuff allows diffusion of nitrous oxide, carbon dioxide and other gases with resultant rise in its intracuff pressure during anesthesia. The present study was designed to investigate the intracuff pressure changes during ...
Seaborn Tommy - - 2013
The evaluation of respiratory parameters often requires the use of anesthetics (that depress the neural -network controlling respiration), and/or ways to restrain the animal's mobility (that produces a stress-dependent increase of respiration). Consequently, the establishment of plethysmography represented an invaluable technique in respiratory physiology. Plethysmography, indeed, allows the assessment of ...
Ulus Abdülkadir - - 2013
Background This study was conducted to compare low concentration-high volume intravenous regional anesthesia (IVRA) method with local anesthetic method in upper extremity surgery in terms of efficiency and adverse effects. Material and Methods Thirty-nine patients were divided into 2 groups; the first group received a 2% concentration of 12-15 mL ...
Kandasamy Regunath R Neurosurgical Division, Department of Neurosciences, Hospital Universiti Sains Malaysia, 16150, Kubang Kerian, Kota Bharu, Kelantan, - - 2013
A patient with refractory epilepsy due to underlying mesial temporal sclerosis underwent general anesthesia for an elective anterior temporal lobectomy and amgydalo-hippocampectomy. He was a known hypertensive and his blood pressure was well controlled on medication. Following induction of general anesthesia and subsequent opening of the craniotomy flap it was ...
Zádori Zoltán S ZS Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, - - 2013
The protocols described in this unit are designed to measure the intragastric pressure in anesthetized rats by a water-filled low-compliance rubber balloon. The balloon is introduced into the stomach either orally (by passing the balloon down the esophagus) or directly via a small incision of the fundus after laparotomy. The ...
Hosseinzadeh Hamzeh H Department of Anesthesiology, Tabriz University of Medical Sciences, Tabriz, - - 2013
LMA is a simple supra-laryngeal device which is used to establish and maintain airway. Despite the common use of the LMA, there are no optimal methods for induction of anesthesia that can guarantee a proper insertion. The purpose of this study is comparing three methods of induction of anesthesia (Propofol, ...
Severinghaus John W JW University of California San Francisco, San Francisco, CA 94607, - - 2013
After training in physics during World War II, I spent 2 years designing radar at Massachusetts Institute of Technology and then switched to biophysics. After medical school and a residency, I was doctor drafted to National Institutes of Health where I studied blood gas transport in hypothermia and developed the ...
Lu Yao - - 2013
This study was a double-blinded randomized control trial designed to investigate the hemodynamic effects of dexmedetomidine on prolonged tourniquet inflation. Thirty-seven patients scheduled for elective orthopedic surgery of the lower limb under general anesthesia were recruited. They were randomly assigned to receive intravenous dexmedetomidine (DEX, 0.5 μg/kg; n = 18) or normal saline ...
Anvaripour Abdorasoul - - 2012
PURPOSE: In order to prevent postpartum hemorrhage in caesarean section under spinal anesthesia, patients routinely receive oxytocin. In this study we compared the efficacy of Methylergonovine and Oxytocin on hemodynamic stability and bleeding amount in caesarean section. MATERIALS AND METHODS: In this randomised controlled trial study, 80 patients candidate for ...
Matsukawa Ryuichi - - 2013
BACKGROUND We recently reported that activation of neuregulin-1 (NRG-1)/ErbB signaling in the rostral ventrolateral medulla (RVLM) of the brainstem elicits sympathoinhibition and depressor effects, and ErbB2-type ErbB receptors are involved in the neurogenic mechanisms of hypertension. Nitric oxide (NO) in the RVLM also elicits sympathoinhibition and depressor effects. NRG-1 enhances ...
Kim Sung-Hoon - - 2012
BACKGROUND:Pulse transit time (PTT) has been reported to show good agreement with arterial blood pressure (BP) in awake humans. We evaluated whether noninvasive beat-to-beat PTT accurately correlated with invasively measured continuous arterial BP during anesthesia induction in hypertensive patients.METHODS:Twenty-three hypertensive patients who were scheduled for kidney transplant were enrolled. Radial ...
Akinmoladun V I VI Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, College of Medicine, University of Ibadan, Ibadan, - - 2013
The systemic effects of adrenaline administered during dental local anesthesia have been the subject of many studies. The purpose of this study was to investigate the haemodynamic and metabolic effects attributable to adrenaline injected during local anesthesia in dental extraction patients. Apparently medically fit patients were included and randomized into ...
Bowles Eric D - - 2012
Although anesthetists have long assumed that ketamine's role in neuroanesthesia is limited because of its association with increased intracranial pressure, this article presents a review of recent clinical literature suggesting otherwise. When ketamine is used as an adjuvant anesthetic agent along with mechanical ventilation to maintain normocapnia, ketamine does not ...
Firme Elizabeth Bessadas Penna - - 2012
OBJECTIVE: To compare deep sedation with general anesthesia for curative ablation of atrial fibrillation. METHODS: We conducted a prospective, randomized study with 32 patients, aged between 18 and 65 years, ASA 2 and 3, BMI d" 30kg/m2, divided into two groups: deep sedation (G1) and general anesthesia (G2). All patients ...
Sabourdin Nada - - 2013
Analgesia and nociception can not be specifically monitored during general anesthesia. Movement of the patient or hemodynamic variations are usually considered as symptoms of insufficient analgesia. The measure of skin conductance (SC) allows an assessment of peripheral sympathetic activity. The analgesia-nociception index (ANI) provides an evaluation of the parasympathetic activity ...
de Morais Hécio Henrique Araújo - - 2012
BACKGROUND: The aim of the present study was to analyze hemodynamic changes after the administration of either 2% lidocaine with epinephrine 1:100,000 (L100) or 4% articaine with epinephrine 1:200,000 (A200) in the surgical removal of symmetrically positioned lower third molars. METHODS: A prospective, randomized, double-blind, clinical trial was carried out ...
Ueno Daisuke - - 2012
Purpose: Intravenous (IV) sedation is commonly used in dentistry. However, no report has yet been published regarding age, hypertension, and antihypertensive drugs during implant surgery and their relationship with changes in blood pressure (BP) and heart rate in implant surgery under IV sedation with propofol and midazolam. Materials and Methods: ...
Bösel Julian - - 2012
PURPOSE: The anesthetic-conserving device AnaConDa(®), a miniature vaporizer, allows volatile sedation in the intensive care unit (ICU). We investigated the effects of isoflurane sedation on cerebral and systemic physiology parameters in neuromonitored ICU stroke patients. METHODS: Included in the study were 19 consecutive ventilated patients with intracerebral hemorrhage (12), subarachnoid ...
Clivatti Jefferson - - 2012
PURPOSE: Tetralogy of Fallot (TOF) is one of the most common causes of cyanotic congenital heart disease. The anesthetic management of parturients with uncorrected TOF is challenging and controversial, especially for Cesarean delivery (CD). We describe the use of noninvasive cardiac output (CO) monitoring to assist the management of CD ...
Frikha Nabil - - 2012
Aim: To evaluate hemodynamic repercussion of a protocol of spinal anesthesia (SA) for cesarean and release the predictive factors of maternal arterial hypotension post spinal anesthesia. Methods: We included parturients proposed for Cesarean under SA. They were not included the women of statute ASA > II, preeclamptics, eclamptics and/or having ...
Vricella Laura K - - 2012
To determine whether severe preeclampsia is associated with increased maternal hypotension or fetal heart rate abnormalities after epidural anesthesia placement during labor. Retrospective cohort study of 100 women with severe preeclampsia and 100 normotensive controls who underwent epidural anesthesia during labor from May 2008 to July 2011. Blood pressures during ...
Theiler L - - 2012
While surveys about anesthesia practice appear regularly in the anesthesia literature, they are usually bound to one country. We compared the approach to specific airway management issues among anesthesiologists from three different European countries. A questionnaire was distributed during the main session of three anesthesia meetings in Austria (A), the ...
Taniguchi Ikuo - - 2012
Block copolymers composed of a low-T(g) and high-T(g) block, with suitable pressure miscibility characteristics, can be formed at low-temperature through the application of pressure. Aliphatic block copolyesters composed of poly(ε-caprolactone) derivatives and poly(L-lactide) show room temperature processability under hydraulic pressure of 34.5 MPa without polymer degradation. Mechanism of the pressure-induced ...
Lu Chih-Cherng - - 2012
PURPOSE: We investigated whether ventilation volumes affected arterial blood sevoflurane concentration (A (sev)) and its uptake into the body during general anesthesia. METHODS: Thirty female patients undergoing elective gynecologic surgery were randomly allocated into three groups: hyperventilation, normal ventilation, and hypoventilation. Inspiratory (CI(sev)) and end-tidal ((sev)) sevoflurane concentrations were routinely ...
Silva I A - - 2012
After brain death (BD) donors usually experience cardiac dysfunction, which is responsible for a considerable number of unused organs. Causes of this cardiac dysfunction are not fully understood. Some authors argue that autonomic storm with severe hemodynamic instability leads to inflammatory activation and myocardial dysfunction. To investigate the hypothesis that ...
Varagic Jasmina - - 2012
Increased sympathetic outflow, renin-angiotensin system (RAS) activity, and oxidative stress are critical mechanisms underlying the adverse cardiovascular effects of dietary salt excess. Nebivolol is a third-generation, highly selective β1-receptor blocker with RAS-reducing effects and additional antioxidant properties. This study evaluated the hypothesis that nebivolol reduces salt-induced cardiac remodeling and dysfunction ...
Freitas Aguinaldo Figueiredo AF - - 2012
Pulmonary hypertension is associated with a worse prognosis after cardiac transplantation. The pulmonary hypertension reversibility test with sodium nitroprusside (SNP) is associated with a high rate of systemic arterial hypotension, ventricular dysfunction of the transplanted graft and high rates of disqualification from transplantation. This study was aimed at comparing the ...
Nagai Toshiyuki - - 2012
Serum C-reactive protein (CRP) elevation is associated with poor clinical outcome in patients with heart failure (HF). We previously reported that CRP exacerbates the development of pressure overload-induced cardiac remodeling through an enhanced inflammatory response and oxidative stress. In the present study, we examined the effect of eicosapentaenoic acid (EPA), ...
Chatpun Surapong S Department of Bioengineering, University of California-San Diego, La Jolla, CA 92093, - - 2013
Plasma expander (PE) based on polyethylene glycol (PEG) conjugated to albumin has shown positive results maintaining blood volume during hemodilution and restoring blood volume during resuscitation from hemorrhagic shock. Polyethylene glycol conjugation to human serum albumin (HSA), PEG-HSA, increases size, weight, and colloidal osmotic pressure, with minor effects on solution ...
Baxter Joshua L - - 2012
Cocaine has been associated with acute hemodynamic changes, causing anesthesia providers to be concerned about adverse hemodynamic events during general anesthesia. We sought to determine if there were differences in the prevalence of adverse hemodynamic events, and if hemodynamic instability could be predicted in cocaine-positive patients undergoing general anesthesia for ...
Aarnes Turi K - - 2012
This study assessed the accuracy of the oscillometric method for arterial blood pressure (ABP) monitoring in anesthetized camelids. Twenty camelids were anesthetized and systolic ABP (SABP), mean ABP (MABP), and diastolic ABP (DABP) were measured directly and using the oscillometric method. The mean difference between SABP measurements was -9.9 ± ...
Han J-C - - 2012
The concept of pressure-volume area (PVA) in whole heart studies is central to the phenomenological description of cardiac energetics proposed by Suga and colleagues (Physiol Rev 70: 247-277, 1990). PVA consists of two components: an approximately rectangular work loop (W) and an approximately triangular region of potential energy (U). In ...
Thandapilly Sijo J - - 2012
BackgroundWe previously reported that resveratrol, a polyphenol found in red grapes, attenuated changes in small artery geometry and stiffness, as well as cardiac hypertrophy and cardiac function in the spontaneously hypertensive rat (SHR). However, in addition to resveratrol, grapes contain a variety of bioactive polyphenols such as catechins, anthocyanins, and ...
Jakobsen Carl-Johan - - 2012
OBJECTIVE: The purpose of this study was to evaluate the perioperative cardioprotective effect of high thoracic epidural analgesia (HTEA), primarily expressed as an effect on cardiac performance and hemodynamics in patients undergoing cardiac surgery. DESIGN: A randomized, prospective study. PARTICIPANTS: Sixty low-to-moderate risk patients between the ages of 65 and ...
Ketabi Mohammad - - 2012
Local anesthesia (LA) with epinephrine have an important role in pain and bleeding control. However, most clinicians believe LA + epinephrine may cause rapid raise in blood pressure (BP) and heart rate (HR). The aim of this research was to compare the changes in HR and BP after administration of ...
Abdelhalim Ashraf A - - 2012
Topical phenylephrine solutions are widely used in eye procedures to promote pupil dilation without cycloplegia. We report a case of intraoperative severe hypertension and acute pulmonary edema occurring in a child during retinal surgery after possible systemic absorption of topical phenylephrine eyedrops. Our objective is to discuss the proper treatment ...
Eldawlatly Abdelazeem - - 2012
The main objective of this survey is to describe the current practice of thoracic anesthesia in the Middle Eastern (ME) region. A prospective online survey. An invitation to participate was e-mailed to all members of the ME thoracic-anaesthesia group. A total of 58 members participated in the survey from 19 ...
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