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https://www.readbyqxmd.com/read/28920052/the-effect-of-intravenous-magnesium-sulfate-versus-intravenous-sufentanil-on-the-duration-of-analgesia-and-postoperative-pain-in-patients-with-tibia-fracture
#1
Ali Reza Olapour, Ahmad Reza Mohtadi, Mansour Soltanzadeh, Ali Ghomeishi, Reza Akhondzadeh, Maryam Jafari
BACKGROUND: In the recent decades controlling postoperative pain has become a popular topic as it leads to the patients' wellbeing and improved life quality, while it reduces the costs for both patients and medical facilities. OBJECTIVES: This study aimed at comparing intravenous magnesium sulfate versus intravenous sufentanil on the duration of analgesia and postoperative pain in patients undergoing tibia fracture surgery. METHODS: This double blind clinical trial study was performed on 70 candidates of tibia fractures between the ages of 18 and 55 years with American society of anesthesiologists (ASA) class I and II...
April 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28919570/initial-clinical-experience-with-aview-a-clinical-computational-platform-for-intracranial-aneurysm-morphology-hemodynamics-and-treatment-management
#2
Jianping Xiang, Nicole Varble, Jason M Davies, Ansaar T Rai, Kenichi Kono, Shin-Ichiro Sugiyama, Mandy J Binning, Rabih G Tawk, Hoon Choi, Andrew J Ringer, Kenneth V Snyder, Elad I Levy, L Nelson Hopkins, Adnan H Siddiqui, Hui Meng
BACKGROUND: Intracranial aneurysm (IA) management is challenging. Clinicians often rely on varied and intuitively disparate ways of evaluating rupture risk that may only partially take into account complex hemodynamic and morphologic factors. We developed a prototype of a clinically-oriented, streamlined, computational platform, AView, for rapid assessment of hemodynamics and morphometrics in clinical settings. To show the potential clinical utility of AView, we report our initial multicenter experience highlighting the possible advantages of morphologic and hemodynamic analysis of IAs...
September 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28916883/different-post-processing-conditions-for-3d-bioprinted-%C3%AE-tricalcium-phosphate-scaffolds
#3
Liciane Sabadin Bertol, Rodrigo Schabbach, Luis Alberto Loureiro Dos Santos
The development of 3D printing hardware, software and materials has enabled the production of bone substitute scaffolds for tissue engineering. Calcium phosphates cements, such as those based on α-tricalcium phosphate (α-TCP), have recognized properties of osteoinductivity, osteoconductivity and resorbability and can be used to 3D print scaffolds to support and induce tissue formation and be replaced by natural bone. At present, however, the mechanical properties found for 3D printed bone scaffolds are only satisfactory for non-load bearing applications...
September 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28915221/metformin-exerts-beneficial-effects-in-hemorrhagic-shock-in-an-ampk%C3%AE-1-independent-manner
#4
Paul Kim, Giovanna Piraino, Michael O'Connor, Paul W Hake, Vivian Wolfe, Patrick Lahni, Basilia Zingarelli
Despite therapeutic advances in hemorrhagic shock, mortality from multiple organ failure remains high. AMP-activated protein kinase (AMPK) is involved in cellular energy homeostasis. Two catalytic subunits, α1 and α2, have been identified, with α1 subunit largely expressed in major organs. Here, we hypothesized that genetic deficiency of AMPKα1 worsens hemorrhage-induced multiple organ failure. We also investigated whether treatment with metformin, a clinically used drug for metabolic homeostasis, affords beneficial effects...
September 14, 2017: Shock
https://www.readbyqxmd.com/read/28905004/gastroenteritis-aggressive-versus-slow-treatment-for-rehydration-gastro-a-pilot-rehydration-study-for-severe-dehydration-who-plan-c-versus-slower-rehydration
#5
Kirsty A Houston, Jack G Gibb, Ayub Mpoya, Nchafatso Obonyo, Peter Olupot-Olupot, Margeret Nakuya, Jennifer A Evans, Elizabeth C George, Diana M Gibb, Kathryn Maitland
BACKGROUND: The World Health Organization (WHO) rehydration management guidelines (Plan C) for children with acute gastroenteritis (AGE) and severe dehydration are widely practiced in resource-poor settings, yet have never been formally evaluated in a clinical trial. A recent audit of outcome of AGE at Kilifi County Hospital, Kenya noted that 10% of children required high dependency care (20% mortality) and a number developed fluid-related complications. The fluid resuscitation trial, FEAST, conducted in African children with severe febrile illness, demonstrated higher mortality with fluid bolus therapy and raised concerns regarding the safety of rapid intravenous rehydration therapy...
2017: Wellcome Open Research
https://www.readbyqxmd.com/read/28902936/corneal-angiogenesis-based-on-different-protocols-of-alkaline-cauterization-in-murine-models
#6
Flor Diana Yokoay Claros-Chacaltana, Karina Kamachi Kobashigawa, Ivan Ricardo Martinez Padua, Gisele Pereira Valdetaro, Marcela Aldrovani, José Luiz Laus
Purpose: To establish and compare protocols of alkaline cauterization for inducing corneal angiogenesis in murine models. Methods: Twenty-four adult Wistar rats were distributed into four groups (G1, G2, G3, and G4). The right eye cornea from each rat was cauterized using filter paper (3 mm), soaked in a solution of silver and potassium nitrates (3:1). Cauterization times were 10 (G1 and G4), or 20 seconds (G2 and G3). Cauterized corneas were washed with Ringer's lactate solution...
August 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28899912/do-nitric-oxide-synthase-and-cyclooxygenase-contribute-to-sweating-response-during-passive-heating-in-endurance-trained-athletes
#7
Tatsuro Amano, Naoto Fujii, Glen P Kenny, Yoshimitsu Inoue, Narihiko Kondo
The aim of our study was to determine if habitual endurance training can influence the relative contribution of nitric oxide synthase (NOS) and cyclooxygenase (COX) in the regulation of sweating during a passive heat stress in young adults. Ten trained athletes and nine untrained counterparts were passively heated until oral temperature (as estimated by sublingual temperature, Tor) increased by 1.5°C above baseline resting. Forearm sweat rate (ventilated capsule) was measured at three skin sites continuously perfused with either lactated Ringer's solution (Control), 10 mmol/L N(G) -nitro-L-arginine methyl ester (L-NAME, non-selective NOS inhibitor), or 10 mmol/L ketorolac (Ketorolac, non-selective COX inhibitor) via intradermal microdialysis...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28891830/comparison-of-postoperative-pain-and-residual-gas-between-restrictive-and-liberal-fluid-therapy-in-patients-undergoing-laparoscopic-cholecystectomy
#8
Lei Yao, Yulan Wang, Boxiang Du, Jie Song, Fuhai Ji
BACKGROUND: Different fluid regimens are used in the clinical management of perioperative fluid therapy, but there still is the argument about which fluid regimen is better for patients. This study was mainly designed to compare different fluid regimens on postoperative pain and residual gas in patients undergoing laparoscopic cholecystectomy. METHODS: A total of 100 patients were equally randomized to receive restrictive fluid infusion (n=50) with lactated Ringer (LR) solution 5 mL/kg/h or liberal fluid infusion (n=50), with 30 mL/kg/h lactated Ringer solution...
September 7, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28888692/canadian-study-of-health-and-aging-clinical-frailty-scale-does-it-predict-adverse-outcomes-among-geriatric-trauma-patients
#9
Annie Cheung, Barbara Haas, Thom J Ringer, Amanda McFarlan, Camilla L Wong
BACKGROUND: The Canadian Study of Health and Aging Clinical Frailty Scale (CFS) and the laboratory Frailty Index (FI-lab) are validated tools based on clinical and laboratory data, respectively. Their utility as predictors of geriatric trauma outcomes is unknown. Our primary objective was to determine whether pre-admission CFS is associated with adverse discharge destination. Secondary objectives were to evaluate the relationships between CFS and in-hospital complications and between admission FI-lab and discharge destination...
September 6, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28888449/understanding-the-effect-of-pulsed-electric-fields-on-thermostability-of-connective-tissue-isolated-from-beef-pectoralis-muscle-using-a-model-system
#10
A U Alahakoon, I Oey, P Silcock, P Bremer
Brisket is a low value/tough meat cut that contains a large amount of connective tissue. Conversion of collagen into gelatin during heating reduces the toughness of the connective tissue however this conversion is slow at low cooking temperatures (around 60°C). The objective of this project was to determine the ability of pulsed electric field (PEF) processing to reduce the thermal stability of connective tissue. To achieve this, a novel model system was designed in which connective tissue obtained from beef deep pectotalis muscle (brisket) was exposed to PEF at combinations of electric field strength (1...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28888007/nano%C3%A2-calcium-phosphate-bone-cement-based-on-si-stabilized-%C3%AE-tricalcium-phosphate-with-improved-mechanical-properties
#11
M Roozbahani, M Alehosseini, M Kharaziha, R Emadi
This study aimed to develop nano‑calcium phosphate cement (nCPC) and evaluate the effect of nanosized precursors on mechanical, physical and handling properties (injectability and setting time) as well as conversion rate of nano-reactants into nano-hydroxyapatite (nHA). In this study, while alpha tricalcium phosphate (α-TCP, 98wt%) and HA (2wt%) were applied as the powder phase, 2.5wt% NaH2PO4 solution was used as liquid phase of cement. Before nano-CPC preparation, Si-stabilized α-TCP nanopowder with particle size of 10±3...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28869108/cryopreservation-of-sperm-in-grey-mullet-mugil-cephalus-linnaeus-1758
#12
Ramachandran Balamurugan, Natesan Munuswamy
The aim of this study was to document the effects of cryopreservation on sperm motility and viability in Grey mullet Mugil cephalus. Cryopreservation of sperm was attempted by using two extenders ringer solution for marine fish (RSMF) and V2 extender (V2E) and cryoprotectants dimethylacetamide (DMA), dimethylsulfoxide (DMSO), ethylene glycol (EG), glycerol (GLY), propylene glycol (PG) and methanol (MeOH). Cryoprotectants were assessed at different concentrations individually as well as in combination with varying equilibration times (10 and 30min)...
October 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28866965/perfusion-with-carbon-monoxide-does-not-affect-extracellular-glutamate-in-dialysates-of-the-hippocampus-of-freely-moving-mice
#13
Asuka Ito, Mostofa Jamal, Kiyoshi Ameno, Naoko Tanaka, Ayaka Takakura, Takanori Miki, Hiroshi Kinoshita
Carbon monoxide (CO) produces several neurological effects, including cognitive, mood, and behavioral disturbance. Glutamate is thought to play a particularly important role in learning and memory. Thus, the present study was aimed at investigating the local effect of CO on the glutamate level in the hippocampus of mice using in vivo reverse microdialysis. Mice were perfused with Ringer's solution (control) or CO (60-125 μM) in Ringer's solution into the hippocampus via microdialysis probe. Dialysate samples were collected every 20 min, and then analyzed with high-performance liquid chromatography coupled to an electrochemical detector...
September 4, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28863020/validating-the-physiologic-model-hummod-as-a-substitute-for-clinical-trials-involving-acute-normovolemic-hemodilution
#14
Charles R Sims, Luis R Delima, Arthur Calimaran, Robert Hester, W Andrew Pruett
BACKGROUND: Blood conservation strategies and transfusion guidelines remain a heavily debated clinical topic. Previous investigational trials have shown that acute isovolemic hemodilution does not limit adequate oxygen delivery; however, a true critical hemoglobin level has never been investigated or defined due to safety concerns for human volunteers. Validated physiologic modeling may be useful to investigate hemodilution at critical hemoglobin levels without the ethical or safety hazards of clinical trials...
August 31, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28862723/experimental-investigation-on-the-mechanical-behavior-of-polyurethane-piccs-after-long-term-conservation-in-in-vivo-like-conditions
#15
Francesca Di Puccio, Giuseppe Gallone, Andrea Baù, Emanuele M Calabrò, Simona Mainardi, Paolo Poli, Antonella Scocca
INTRODUCTION: In a previous paper, the authors investigated the mechanical behavior of several commercial polyurethane peripherally inserted central venous catheters (PICCs) in their 'brand new' condition. The present study represents a second step of the research activity and aims to investigate possible modifications of the PICC mechanical response, induced by long-term conservation in in vivo-like conditions, particularly when used to introduce oncologic drugs. METHODS: Eight 5 Fr single-lumen catheters from as many different vendors, were examined...
August 24, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28860170/effects-of-vehicle-microdialysis-solutions-on-cutaneous-vascular-responses-to-local-heating
#16
Caroline J Smith, Daniel H Craighead, Lacy M Alexander
Microdialysis is a minimally invasive technique often paired with laser Doppler flowmetry to examine cutaneous microvascular function, yet presents with several challenges, including incompatibility with perfusion of highly lipophilic compounds. The present study addresses this methodological concern, with an emphasis on the independent effects of commonly used vehicle dialysis solutions to improve solubility of pharmacological agents with otherwise low aqueous solubility. Four microdialysis fibers were placed in the ventral forearm of eight subjects (4 men, 4 women; 25 ± 1 years) with sites randomized to serve as 1) control (lactated Ringer's), 2) Sodium carbonate-bicarbonate buffer administered at physiological pH (SCB-HCL; pH 7...
August 31, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28859334/sod1g93a-mutant-mice-develop-a-neuroinflammation-independent-dendropathy-in-excitatory-neuronal-subsets-of-the-olfactory-bulb-and-retina
#17
Cornelia Ringer, Eberhard Weihe, Burkhard Schütz
Nonmotor neuron-related pathology is a feature of amyotrophic lateral sclerosis (ALS), both in patients and in animal models. There is emerging evidence that sensory systems (olfaction and vision) are affected in humans. Here, we asked whether such sensory neuropathology is recapitulated in the superoxide dismutase 1 (SOD1G93A) mouse model of ALS. Neuronal vacuolization in olfaction and vision pathways was assessed in tissue sections from presymptomatic and symptomatic disease stages, and compared to wild type...
September 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28844961/mitochondrial-dysfunction-in-rat-splenocytes-following-hemorrhagic-shock
#18
Marie Warren, Kumar Subramani, Richard Schwartz, Raghavan Raju
The regulation of mitochondrial function is critical in cellular homeostasis following hemorrhagic shock. Hemorrhagic shock results in fluid loss and reduced availability of oxygen and nutrients to tissues. The spleen is a secondary lymphoid organ playing a key role in 'filtering the blood' and in the innate and adaptive immune responses. To understand the molecular basis of hemorrhagic shock, we investigated the changes in splenocyte mitochondrial respiration, and concomitant immune and metabolic alterations...
August 26, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28842183/pronounced-and-sustained-cutaneous-vasoconstriction-during-and-following-cyrotherapy-treatment-role-of-neurotransmitters-released-from-sympathetic-nerves
#19
Kevin M Christmas, Jordan C Patik, Sepideh Khoshnevis, Kenneth R Diller, R Matthew Brothers
Cryotherapy is a therapeutic technique using ice or cold water applied to the skin to manage soft tissue trauma and injury. While beneficial, there are some potentially detrimental side effects, such as pronounced vasoconstriction and tissue ischemia that are sustained for hours post-treatment. This study tested the hypothesis that this vasoconstriction is mediated by 1) activation of post-synaptic α-adrenergic receptors and/or 2) activation of post-synaptic neuropeptide Y1 (NPY Y1) receptors. 8 subjects were fitted with a commercially available cryotherapy unit with a water perfused bladder on the lateral portion of the right calf...
August 24, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28830365/minimal-shedding-of-the-glycocalyx-layer-during-abdominal-hysterectomy
#20
Janis Nemme, Robert G Hahn, Camilla Krizhanovskii, Stelia Ntika, Olegs Sabelnikovs, Indulis Vanags
BACKGROUND: Surgery with and without hypervolaemia may cause shedding (breakdown) of the endothelial glycocalyx layer, but the severity of this problem is unclear. METHODS: In this preliminary report of a larger clinical trial, the plasma and urine concentrations of three biomarkers of glycocalyx shedding (syndecan-1, hyaluronic acid and heparan sulfate) were measured in seven patients before, during, and after open hysterectomy. The fluid therapy consisted of 25 ml/kg (approximately 2 l) of Ringer's lactate, which was infused over 30 min when the surgery started...
August 22, 2017: BMC Anesthesiology
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