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https://www.readbyqxmd.com/read/28795672/-effects-of-three-different-concentrations-of-hypertonic-sodium-salt-resuscitation-on-liver-injury-of-rats-at-the-early-stage-of-severe-burned
#1
Congsong Sun, Jiping Zhou, Chunyu Yuan, Yexiang Sun, Xulin Chen, Fei Wang, Qiang Wang
OBJECTIVE: To investigate the effects of three different concentrations of hypertonic sodium salt (HS) resuscitation on liver injury of rats at the early stage of severe burned. METHODS: 104 female Sprage-Dawley (SD) rats were randomly divided into five groups: sham group (n = 8), lactated Ringer solution (LR) group (n = 24), 600, 800, 1 000 mmol/L HS groups (HS600, HS800, and HS1000 groups, n = 24). Rats in LR group and HS groups were subjected to full-thickness scald with 30% total body surface area (TBSA), and then given liquid resuscitation treatment with LR and the corresponding HS...
August 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28791150/chromium-oxide-coatings-with-the-potential-for-eliminating-the-risk-of-chromium-ion-release-in-orthopaedic-implants
#2
A M Oje, A A Ogwu
Chromium oxide coatings prepared by radiofrequency reactive magnetron sputtering on stainless steel substrates were exposed to Ringer's physiological solution and tested for their electrochemical corrosion stability using an open circuit potential measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and Mott-Schottky analysis. The coatings were found to be predominantly Cr2O3, based on the observation of the dominance of [Formula: see text] and Eg symmetric modes in our Raman spectroscopic investigation and the Eu vibrational modes in our Fourier transform infrared spectroscopic measurements on the coatings...
July 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28777629/j-%C3%AF-production-and-polarization-within-a-jet
#3
Zhong-Bo Kang, Jian-Wei Qiu, Felix Ringer, Hongxi Xing, Hong Zhang
We study the production and polarization of J/ψ mesons within a jet in proton-proton collisions at the LHC. We define the J/ψ-jet fragmentation function as a ratio of differential jet cross sections with and without the reconstructed J/ψ in the jet. We demonstrate that this is a very useful observable to help explore the J/ψ production mechanism, and to differentiate between different nonrelativistic QCD global fits based on inclusive J/ψ cross sections. Furthermore, we propose to measure the polarization of J/ψ mesons inside the jet, which can provide even more stringent constraints for the heavy quarkonium production mechanism...
July 21, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28774488/crystalloid-versus-colloid-fluids-for-reduction-of-postoperative-ileus-after-abdominal-operation-under-combined-general-and-epidural-anesthesia
#4
Mohammad Reza Ghodraty, Faranak Rokhtabnak, Hossein Reza Dehghan, Alireza Pournajafian, Masoud Baghaee Vaji, Zahra Sadat Koleini, Jahan Porhomayon, Nader D Nader
BACKGROUND: The main objective of this study was to compare the effect of perioperative administration of crystalloid versus colloid solutions and its impact on reversal of ileus after resection with primary anastomosis of intestine. We hypothesized that inclusion of colloids will improve the return of intestinal motility. METHODS: In a double-blinded clinical trial, 91 the American Society of Anesthesiologists I to III patients undergoing abdominal operation for resection with anastomosis of small or large intestine were randomized to receive either lactated Ringer solution crystalloid group or 6% hydroxyethyl starch colloid group to replace intraoperative fluid loss (blood loss + third space)...
July 31, 2017: Surgery
https://www.readbyqxmd.com/read/28773893/electrochemical-corrosion-behavior-of-ta%C3%A2-n-nanoceramic-coating-in-simulated-body-fluid
#5
Jian Cheng, Jiang Xu, Lin Lin Liu, Shuyun Jiang
In order to improve the corrosion and wear resistance of biomedical Ti-6Al-4V implants, a Ta₂N nanoceramic coating was synthesized on a Ti-6Al-4V substrate by the double glow discharge plasma process. The Ta₂N coating, composed of fine nanocrystals, with an average grain size of 12.8 nm, improved the surface hardness of Ti-6Al-4V and showed good contact damage tolerance and good adhesion strength to the substrate. The corrosion resistance of the Ta₂N coating in Ringer's physiological solution at 37 °C was evaluated by different electrochemical techniques: potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), potentiostatic polarization and capacitance measurements (Mott-Schottky approach)...
September 10, 2016: Materials
https://www.readbyqxmd.com/read/28773207/characterization-of-the-micro-abrasive-wear-in-coatings-of-tac-hfc-au-for-biomedical-implants
#6
Pablo Guzmán, Luis Yate, Mercy Sandoval, Jose Caballero, Willian Aperador
The object of this work was the deposition of a Ta-Hf-C thin film with a gold interlayer on stainless steel, via the physical vapor deposition (PVD) technique, in order to evaluate the properties of different systems subjected to micro-abrasive wear phenomena generated by alumina particles in Ringer's solution. The surface characterization was performed using a scanning electron microscope (SEM) and atomic force microscope (AFM). The crystallographic phases exhibited for each coating were obtained by X-ray diffraction (XRD)...
July 25, 2017: Materials
https://www.readbyqxmd.com/read/28770993/real-time-monitoring-of-insulin-using-a-graphene-field-effect-transistor-aptameric-nanosensor
#7
Zhuang Hao, Yibo Zhu, Xuejun Wang, Pavana Rotti, Christopher DiMarco, Scott Tyler, Xuezeng Zhao, John F Engelhardt, James C Hone, Qiao Lin
This paper presents an approach to the real-time, label-free, specific and sensitive detection of insulin using a graphene aptameric nanosensor. The nanosensor is configured as a field effect transistor (FET), whose graphene conducting channel is functionalized with a guanine-rich IGA3 aptamer. The negatively charged aptamer folds into a compact and stable anti-parallel or parallel G-quadruplex conformation upon binding with insulin, resulting in a change in the carrier density of graphene and thus its electrical conductance...
August 3, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28759511/chemical-burns-of-the-eye
#8
Denise R Ramponi
Chemical burns of the eye are one of the most common eye injuries. The extent of the ocular surface damage is influenced by the type, temperature, volume, and pH of the corrosive substance and duration of exposure. Limbal ischemia found on eye assessment is the primary determinant of eventual visual outcome. Eye irrigation must be instituted immediately at the scene of exposure and continued in the emergency department to reduce visual impairment. Traditionally lactated Ringer's and normal saline have been used as irrigation fluids, although one systematic review demonstrates similar outcomes with other irrigation fluids...
July 2017: Advanced Emergency Nursing Journal
https://www.readbyqxmd.com/read/28758595/vasodilator-effect-of-angiotensin-1-7-on-vascular-coronary-bed-of-rats-role-of-mas-ace-and-ace2
#9
Patrícia Lanza Moraes, Lucas Miranda Kangussu, Carlos Henrique Castro, Robson As Santos, Anderson José Ferreira, Alvair P Almeida
Angiotensin(Ang)-(1-7) is a biologically active member of the renin-angiotensin system that participates of the regulation of blood pressure. Although Ang-(1-7) is able to potentiate the vasodilator effect of bradykinin in coronary bed of rats, a direct vasodilator effect of Ang-(1-7) in this vascular bed has not been characterized. Thus, the aim of this study was to evaluate the mechanisms involved in the vasodilator effect of Ang-(1-7) in the vasculature of isolated rat hearts perfused according to the Langendorff technique at constant flow...
July 28, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28751373/heat-shock-protein-90-contributes-to-cutaneous-vasodilation-through-activating-nitric-oxide-synthase-in-young-male-adults-exercising-in-the-heat
#10
Naoto Fujii, Sarah Yan Zhang, Brendan D McNeely, Takeshi Nishiyasu, Glen P Kenny
While the mechanisms underlying the control of cutaneous vasodilation has been extensively studied, there remains a lack of understanding of the different factors that may modulate cutaneous perfusion during an exercise-induced heat stress. We evaluated the hypothesis that heat shock protein 90 (HSP90) contributes to the heat loss response of cutaneous vasodilation via the activation of nitric oxide synthase (NOS) during exercise in the heat. In eleven young males (25±5 years), cutaneous vascular conductance (CVC) was measured at four forearm skin sites that were continuously treated with 1) Lactated Ringers solution (Control), 2) NOS inhibition with 10 mM L-NAME, 3) HSP90 inhibition with 178 μM Geldanamycin, or 4) a combination of 10 mM L-NAME and 178 μM Geldanamycin...
July 27, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28742797/a-comparison-of-selective-aortic-arch-perfusion-and-resuscitative-endovascular-balloon-occlusion-of-the-aorta-for-the-management-of-hemorrhage-induced-traumatic-cardiac-arrest-a-translational-model-in-large-swine
#11
Ed B G Barnard, James E Manning, Jason E Smith, Jason M Rall, Jennifer M Cox, James D Ross
BACKGROUND: Survival rates remain low after hemorrhage-induced traumatic cardiac arrest (TCA). Noncompressible torso hemorrhage (NCTH) is a major cause of potentially survivable trauma death. Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) at the thoracic aorta (Zone 1) can limit subdiaphragmatic blood loss and allow for IV fluid resuscitation when intrinsic cardiac activity is still present. Selective Aortic Arch Perfusion (SAAP) combines thoracic aortic balloon hemorrhage control with intra-aortic oxygenated perfusion to achieve return of spontaneous circulation (ROSC) when cardiac arrest has occurred...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28742442/analysis-of-variability-in-intraoperative-fluid-administration-for-colorectal-surgery-an-argument-for-goal-directed-fluid-therapy
#12
Timothy D Quinn, Ethan Y Brovman, Richard D Urman
BACKGROUND: Fluid therapy in the perioperative period varies greatly between anesthesia providers and may have a negative impact on surgical outcomes. METHODS: We conducted a retrospective analysis of 705 elective colorectal cases consisting of colectomies, ileocolic resections, and low anterior resections at an academic institution from January 1, 2010 to May 29, 2015, collected by our electronic medical record before implementation of Enhanced Recovery After Surgery (ERAS(®)) pathways...
July 25, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28738899/a-rare-manifestation-of-burns-after-lightning-strike-in-rural-ghana-a-case-report
#13
Paschal Awingura Apanga, John Atigiba Azumah, Joseph Bayewala Yiranbon
BACKGROUND: Lightning is a natural phenomenon that mostly affects countries in the tropical and subtropical regions of the globe, including Ghana. Lightning strikes pose a global public health issue. Although strikes to humans are uncommon, it is associated with high morbidity and mortality. CASE PRESENTATION: We present a case of a 10-year-old Ghanaian girl who got second-degree burns after being struck by lightning. She was put on an intravenous broad-spectrum antibiotic (ceftriaxone), Ringer's lactate, and her burns were dressed with sterile gauze impregnated with Vaseline (petroleum jelly) and silver sulfadiazine ointment...
July 25, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28734854/pulse-pressure-variation-as-a-guide-for-volume-expansion-in-dogs-undergoing-orthopedic-surgery
#14
Denise T Fantoni, Keila K Ida, André M Gimenes, Matheus M Mantovani, Jacqueline R Castro, Geni C F Patrício, Aline M Ambrósio, Denise A Otsuki
OBJECTIVE: To investigate whether pulse pressure variation (PPV) can predict fluid responsiveness in healthy dogs during clinical surgery. STUDY DESIGN: Prospective clinical study. ANIMALS: Thirty-three isoflurane-anesthetized dogs with arterial hypotension during orthopedic surgery. METHODS: Fluid challenge with lactated Ringer's solution (15 mL kg(-1) in 15 minutes) was administered in mechanically ventilated dogs (tidal volume 10 mL kg(-1)) with hypotension [mean arterial pressure (MAP) < 65 mmHg]...
March 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28719516/echocardiography-and-passive-leg-raising-in-the-postoperative-period-a-prospective-observational-study
#15
Yasser El Hadouti, Lucía Valencia, Angel Becerra, Aurelio Rodríguez-Pérez, Jean L Vincent
BACKGROUND: Signs of hypovolaemia are frequent in the postoperative period, but not all patients need or respond to fluid administration. An increase in cardiac output (CO) after passive leg raising (PLR) has been demonstrated to be useful as a volume response predictor in non-surgical, spontaneously breathing patients. OBJECTIVE: The objective of this study was to evaluate the accuracy of transthoracic echocardiography after PLR to predict fluid responsiveness in post-surgical patients...
July 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28709157/hypotensive-resuscitation-with-hypertonic-saline-dextran-improves-survival-in-a-rat-model-of-hemorrhagic-shock-at-high-altitude
#16
Jingxiang Zhao, Guoxing You, Bo Wang, Zhenwei Sun, Zhen Wang, Sha Xia, Lian Zhao, Hong Zhou
OBJECTIVE: To compare the efficacy of hypotensive resuscitation with hypertonic saline dextran 70 (HSD) and lactated Ringer (LR) solutions in a rat model of hemorrhagic shock at a simulated altitude of 4,000 m. METHODS: Anesthetized rats were bled to maintain their mean arterial pressure (MAP) at 45 mm Hg for 1 h. The distal quarter of the tail was then amputated to allow free blood loss; rats were simultaneously resuscitated with 4 mL kg HSD (HSD group, n = 10) or 4 mL kg LR (LR group, n = 10), followed by hypotensive resuscitation with LR to maintain MAP at 55 to 60 mm Hg for 1 h...
August 2017: Shock
https://www.readbyqxmd.com/read/28706116/training-standards-in-neuroendovascular-surgery-program-accreditation-and-practitioner-certification
#17
REVIEW
Arthur L Day, Adnan H Siddiqui, Philip M Meyers, Tudor G Jovin, Colin P Derdeyn, Brian L Hoh, Howard Riina, Italo Linfante, Osama Zaidat, Aquilla Turk, Jay U Howington, J Mocco, Andrew J Ringer, Erol Veznedaroglu, Alexander A Khalessi, Elad I Levy, Henry Woo, Robert Harbaugh, Steven Giannotta
BACKGROUND AND PURPOSE: Neuroendovascular surgery is a medical subspecialty that uses minimally invasive catheter-based technology and radiological imaging to diagnose and treat diseases of the central nervous system, head, neck, spine, and their vasculature. To perform these procedures, the practitioner needs an extensive knowledge of the anatomy of the nervous system, vasculature, and pathological conditions that affect their physiology. A working knowledge of radiation biology and safety is essential...
July 13, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28697880/comparison-of-autologous-bone-marrow-and-adipose-tissue-derived-mesenchymal-stem-cells-and-platelet-rich-plasma-for-treating-surgically-induced-lesions-of-the-equine-superficial-digital-flexor-tendon
#18
A Romero, L Barrachina, B Ranera, A R Remacha, B Moreno, I de Blas, A Sanz, F J Vázquez, A Vitoria, C Junquera, P Zaragoza, C Rodellar
Several therapies have been investigated for equine tendinopathies, but satisfactory long term results have not been achieved consistently and a better understanding of the healing mechanism elicited by regenerative therapies is needed. The aim of this study was to assess the separate effects of autologous bone marrow (BM) and adipose tissue (AT) derived mesenchymal stem cells (MSCs), and platelet rich plasma (PRP), for treating lesions induced in the superficial digital flexor tendon (SDFT) of horses. Lesions were created surgically in both SDFTs of the forelimbs of 12 horses and were treated with BM-MSCs (six tendons), AT-MSCs (six tendons) or PRP (six tendons)...
June 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28690287/stroke-volume-variation-svv-and-pulse-pressure-variation-ppv-as-indicators-of-fluid-responsiveness-in-sevoflurane-anesthetized-mechanically-ventilated-euvolemic-dogs
#19
Yusuke Endo, Jun Tamura, Tomohito Ishizuka, Takaharu Itami, Kiwamu Hanazono, Kenjiro Miyoshi, Tadashi Sano, Kazuto Yamashita, William W Muir
Changes in stroke volume variation (SVV) and pulse pressure variation (PPV) in response to fluid infusion were experimentally evaluated during vecuronium infusion and sevoflurane anesthesia in 5 adult, mechanically ventilated, euvolemic, beagle dogs. Sequential increases in central venous pressure (CVP; 3-7[baseline], 8-12, 13-17, 18-22 and 23-27 mmHg) were produced by infusing lactated Ringer's solution and 6% hydroxyethyl starch solution. Heart rate (beats/min), right atrial pressure (RAP, mmHg), pulmonary arterial pressure (PAP, mmHg), pulmonary capillary wedge pressure (PCWP, mmHg), transpulmonary thermodilution cardiac output (TPTDCO, L/min), stroke volume (SV, ml/beat), arterial blood pressure (ABP, mmHg), extravascular lung water (EVLW, ml), pulmonary vascular permeability index (PVPI, calculated), SVV (%), PPV (%) and systemic vascular resistance (SVR, dynes/sec/cm(5)) were determined at each predetermined CVP range...
July 10, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28682955/ringer-s-lactate-versus-normal-saline-in-urgent-cesarean-delivery-in-a-resource-limited-setting-a-pragmatic-clinical-trial
#20
Emmanuel Timarwa Ayebale, Arthur Kwizera, Cephas Mijumbi, Samuel Kizito, Anthony Michael Roche
BACKGROUND: Crystalloids are used routinely for perioperative fluid management in cesarean delivery. Few studies have determined the crystalloid of choice in obstetric anesthesia. We compared the effects of Ringer's lactate (RL) versus 0.9% normal saline (NS) on maternal and neonatal blood pH and 24-hour postoperative morbidity in urgent cesarean delivery in a low-resource setting. Our hypothesis was that RL would result in 30% less acidosis than NS. METHODS: This was a pragmatic prospective double-blind randomized controlled trial in the Mulago National Referral Hospital Labor Ward Theater from September 2011 to May 2012...
August 2017: Anesthesia and Analgesia
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