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https://www.readbyqxmd.com/read/28632435/relative-effects-of-plasma-fibrinogen-concentrate-and-factor-xiii-on-rotem-coagulation-profiles-in-an-in-vitro-model-of-massive-transfusion-in-trauma
#1
David E Schmidt, Märit Halmin, Agneta Wikman, Anders Östlund, Anna Ågren
Massive traumatic haemorrhage is aggravated through the development of trauma-induced coagulopathy, which is managed by plasma transfusion and/or fibrinogen concentrate administration. It is yet unclear whether these treatments are equally potent in ensuring adequate haemostasis, and whether additional factor XIII (FXIII) administration provides further benefits. In this study, we compared ROTEM whole blood coagulation profiles after experimental massive transfusion with different transfusion regimens in an in vitro model of dilution- and transfusion-related coagulopathy...
June 20, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28628253/3d-atomic-scale-insights-into-anisotropic-core-shell-structured-ingaas-nanowires-grown-by-metal-organic-chemical-vapor-deposition
#2
Jiangtao Qu, Sichao Du, Tim Burgess, Changhong Wang, Xiangyuan Cui, Qiang Gao, Weichao Wang, Hark Hoe Tan, Hui Liu, Chennupati Jagadish, Yingjie Zhang, Hansheng Chen, Mansoor Khan, Simon Ringer, Rongkun Zheng
III-V ternary InGaAs nanowires have great potential for electronic and optoelectronic device applications; however, the 3D structure and chemistry at the atomic-scale inside the nanowires remain unclear, which hinders tailoring the nanowires for specific applications. Here, atom probe tomography is used in conjunction with a first-principles simulation to investigate the 3D structure and chemistry of InGaAs nanowires, and reveals i) the nanowires form a spontaneous core-shell structure with a Ga-enriched core and an In-enriched shell, due to different growth mechanisms in the axial and lateral directions; ii) the shape of the core evolves from hexagon into Reuleaux triangle and grows larger, which results from In outward and Ga inward interdiffusion occurring at the core-shell interface; and iii) the irregular hexagonal shell manifests an anisotropic growth rate on {112}A and {112}B facets...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28627324/preparation-characterization-and-in-vitro-cytotoxicity-of-chitosan-hydrogels-containing-silver-nanoparticles
#3
Bożena Tyliszczak, Anna Drabczyk, Sonia Kudłacik-Kramarczyk, Agnieszka Sobczak-Kupiec
Hydrogels, chitosan as well as silver nanoparticles become in recent years materials characterized by a great interest. In present paper hydrogel based on chitosan and containing mention type of nano-sized particles have been synthesized by means of photopolymerization. Sorption capacity in selected liquids as well as behavior in simulated body fluid (such as Ringer's liquid) have been determined. Particularly attention was paid to the studies on toxicity of the hydrogels in relation to the epidermal cells as well as on their impact on growth of selected strain of bacteria (Escherichia coli)...
June 17, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28627137/effect-of-sympathetic-nerve-blockade-on-low-frequency-oscillations-of-forearm-and-leg-skin-blood-flow-in-healthy-humans
#4
Gary J Hodges, Matthew M Mallette, Zachary T Martin, Andrew T Del Pozzi
Examine the effect of inhibiting sympathetic function on cutaneous vasomotion in the forearm and leg METHODS: Intradermal microdialysis fibres were placed in the forearm and leg, one as an untreated control (lactated Ringer's) the other perfused with bretylium tosylate to block sympathetic nerves. Skin blood flow was monitored using laser-Doppler flowmetry. Baseline was collected for 10 min before local skin temperature was increased to 42°C. Spectral analysis was performed using a Morlet wavelet RESULTS: Bretylium tosylate increased skin blood flow during baseline in the forearm (d=1...
June 19, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28625451/is-perioperative-administration-of-5-dextrose-effective-in-reducing-the-incidence-of-ponv-in-laparoscopic-cholecystectomy-a-randomized-control-trial
#5
Ankita Mishra, Ravinder Kumar Pandey, Ankur Sharma, Vanlalnghaka Darlong, Jyotsna Punj, Devalina Goswami, Renu Sinha, Vimi Rewari, Chandralekha Chandralekha, Virinder Kumar Bansal
STUDY OBJECTIVE: To compare the incidence of postoperative nausea and vomiting (PONV) during perioperative administration of 5% dextrose and normal saline in laparoscopic cholecystectomy. DESIGN: Prospective, randomized, double-blind trial. SETTING: Operating rooms in a tertiary care hospital of Northern India. PATIENTS: One hundred patients with American Society of Anesthesiologists status I to II undergoing laparoscopic cholecystectomy were enrolled in this study...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28622608/a-comparative-study-of-the-mechanical-behaviour-of-thermally-oxidised-commercially-pure-titanium-and-zirconium
#6
A Alansari, Y Sun
The objective of this study is to compare the mechanical behaviour of thermally oxidised commercially pure titanium (CP-Ti) and commercially pure zirconium (CP-Zr). For this purpose, these two bio-metals were thermally oxidised under the same condition (650°C for 6h) and the oxidised specimens were characterised using various analytical and experimental techniques, including oxygen uptake analysis, layer thickness and hardness measurements, scratch tests, dry sliding friction and wear tests and tribocorrosion tests in Ringer's solution...
June 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28622600/grain-size-quantification-by-optical-microscopy-electron-backscatter-diffraction-and-magnetic-force-microscopy
#7
Hansheng Chen, Yin Yao, Jacob A Warner, Jiangtao Qu, Fan Yun, Zhixiao Ye, Simon P Ringer, Rongkun Zheng
Quantification of microstructure, especially grain size, in polycrystalline materials is a vital aspect to understand the structure-property relationships in these materials. In this paper, representative characterization techniques for determining the grain size, including optical microscopy (OM), electron backscatter diffraction (EBSD) in the scanning electron microscopy (SEM), and atomic force microscopy/magnetic force microscopy (AFM/MFM), are thoroughly evaluated in comparison, illustrated by rare-earth sintered Nd-Fe-B permanent magnets...
June 13, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28622333/acute-40-exchange-transfusion-with-hemoglobin-vesicles-in-a-mouse-pneumonectomy-model
#8
Mitsutomo Kohno, Tatsuhiko Ikeda, Ryo Hashimoto, Yotaro Izumi, Masazumi Watanabe, Hirohisa Horinouchi, Hiromi Sakai, Koichi Kobayashi, Masayuki Iwazaki
OBJECTIVES: Hemoglobin vesicles (HbVs) function as a red blood cell (RBC) substitute and are composed of purified hemoglobin encapsulated in a phospholipid bilayer membrane. The performance of HbVs as a substitute for RBC transfusions was examined in a mouse model of pneumonectomy following acute 40% exchange-transfusion with HbVs. METHODS: Before performing left pneumonectomies, 40% of the blood volume of mice was replaced with a) lactated Ringer's solution (control), b) 5% recombinant human serum albumin (rHSA), c) mouse RBCs shed in rHSA (mRBCs/rHSA), or d) HbV suspended in rHSA (HbV/rHSA)...
2017: PloS One
https://www.readbyqxmd.com/read/28621839/evaluation-of-hemodynamic-performance-of-a-combined-ecls-and-crrt-circuit-in-seven-positions-with-a-simulated-neonatal-patient
#9
Elizabeth Profeta, Kaitlyn Shank, Shigang Wang, Christian O'Connor, Allen R Kunselman, Karl Woitas, John L Myers, Akif Ündar
As it is common for patients treated with extracorporeal life support (ECLS) to subsequently require continuous renal replacement therapy (CRRT), and neonatal patients encounter limitations due to lack of access points, inclusion of CRRT in the ECLS circuit could provide advanced treatment for this population. The objective of this study was to evaluate an alternative neonatal ECLS circuit containing either a Maquet RotaFlow centrifugal pump or Maquet HL20 roller pump with one of seven configurations of CRRT using the Prismaflex 2000 System...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28616565/lactated-ringer-s-solution-for-preventing-myocardial-reperfusion-injury
#10
Takashi Koyama
Reperfusion of ischemic myocardium is crucial for salvaging myocardial cells from ischemic cell death. However, reperfusion itself induces various deleterious effects on the ischemic myocardium. These effects, known collectively as reperfusion injury, comprise stunned myocardium, reperfusion-induced arrhythmia, microvascular reperfusion injury, and lethal reperfusion injury. No approach has proven successful in preventing any of these injuries in the clinical setting. My colleagues and I recently proposed a new postconditioning protocol, postconditioning with lactate-enriched blood (PCLeB), for the prevention of reperfusion injury...
June 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28611661/discovery-and-development-of-calcium-channel-blockers
#11
REVIEW
Théophile Godfraind
In the mid 1960s, experimental work on molecules under screening as coronary dilators allowed the discovery of the mechanism of calcium entry blockade by drugs later named calcium channel blockers. This paper summarizes scientific research on these small molecules interacting directly with L-type voltage-operated calcium channels. It also reports on experimental approaches translated into understanding of their therapeutic actions. The importance of calcium in muscle contraction was discovered by Sidney Ringer who reported this fact in 1883...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28610596/complete-human-serum-maintains-viability-and-chondrogenic-potential-of-human-synovial-stem-cells-suitable-conditions-for-transplantation
#12
Mitsuru Mizuno, Hisako Katano, Koji Otabe, Keiichiro Komori, Yuji Kohno, Shizuka Fujii, Nobutake Ozeki, Masafumi Horie, Kunikazu Tsuji, Hideyuki Koga, Takeshi Muneta, Ichiro Sekiya
BACKGROUND: In our clinical practice, we perform transplantations of autologous synovial mesenchymal stem cells (MSCs) for cartilage and meniscus regenerative medicine. One of the most important issues to ensuring clinical efficacy involves the transport of synovial MSCs from the processing facility to the clinic. Complete human serum (100% human serum) is an attractive candidate material in which to suspend synovial MSCs for their preservation during transport. The purpose of this study was to investigate whether complete human serum maintained MSC viability and chondrogenic potential and to examine the optimal temperature conditions for the preservation of human synovial MSCs...
June 13, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28609383/the-efficiency-of-aggressive-hydration-with-lactated-ringer-solution-for-the-prevention-of-post-ercp-pancreatitis-a-systematic-review-and-meta-analysis
#13
Dangyan Wu, Jianhua Wan, Liang Xia, Jie Chen, Yin Zhu, Nonghua Lu
BACKGROUND: As shown in studies, aggressive hydration during the perioperative period of endoscopic retrograde cholangiopancreatography (ERCP) effectively prevents post-ERCP pancreatitis (PEP). We conducted a systematic review and meta-analysis to evaluate the clinical effectiveness and safety of aggressive hydration with lactated Ringer solution at preventing PEP. MATERIALS AND METHODS: We searched all relevant research from PubMed, the Cochrane Library, Embase, the Web of Science, ClinicalTrial...
June 12, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28608150/-arthroscopy-of-the-proximal-interphalangeal-joint
#14
N Borisch
OBJECTIVE: Pain reduction in the affected proximal interphalangeal joint (PIP joint) by synovectomy, loose body extraction, dorsal arthrolysis. INDICATIONS: Therapy-resistant synovitis in rheumatoid arthritis (RA), early stage primary and secondary degenerative arthritis, loose bodies, capsular contracture. CONTRAINDICATIONS: Established biomechanic changes in RA (boutonniere and swanneck deformity). Large dorsal synovial cysts. Advanced radiologic changes in degenerative arthritis...
June 12, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28601760/synthesis-of-imidazolium-containing-mono-methacrylates-as-polymerizable-antibacterial-agents-for-acrylic-bone-cements
#15
Wenbin Zhu, Fang Liu, Jingwei He
With the aim to prepare antibacterial acrylic bone cements, a series of imidazolium-containg mono-methacrylates with N-alkyl chain length varied from 10 to 18 (MEIM-x) were synthesized as polymerizable antibacterial agents through a two-step reaction. The structures of the monomers were confirmed by (1)H NMR. Methyl methacrylate in the liquid compoent of cements was partially replaced by MEIM-x to prepare bone cements with 5wt% of MEIM-x. Properties of prepared cements like antibacterial activity, doughing time, curing parameters including maximum temperature (Tmax) and setting time (tset), flexual strength (FS) and modulus (FM), compressive strength (CS) and fluid uptake (FU) in Ringer's solution were investigated...
June 8, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28598894/left-lateral-table-tilt-for-elective-cesarean-delivery-under-spinal-anesthesia-has-no-effect-on-neonatal-acid-base-status-a-randomized-controlled-trial
#16
Allison J Lee, Ruth Landau, James L Mattingly, Margaret M Meenan, Beatriz Corradini, Shuang Wang, Stephanie R Goodman, Richard M Smiley
BACKGROUND: Current recommendations for women undergoing cesarean delivery include 15° left tilt for uterine displacement to prevent aortocaval compression, although this degree of tilt is practically never achieved. We hypothesized that under contemporary clinical practice, including a crystalloid coload and phenylephrine infusion targeted at maintaining baseline systolic blood pressure, there would be no effect of maternal position on neonatal acid base status in women undergoing elective cesarean delivery with spinal anesthesia...
June 9, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28597590/in-vitro-evaluation-of-pediatric-hollow-fiber-membrane-oxygenators-on-hemodynamic-performance-and-gaseous-microemboli-handling-an-international-multicenter-multidisciplinary-approach
#17
Shigang Wang, Luiz F Caneo, Marcelo B Jatene, Fábio B Jatene, Idagene A Cestari, Allen R Kunselman, Akif Ündar
The objective of this study was to compare the hemodynamic performances and gaseous microemboli (GME) handling ability of two pediatric oxygenators in a simulated pediatric cardiopulmonary bypass (CPB) model and the importance of adding an arterial filter in the circuit. The circuit consisted of a Braile Infant oxygenator or a Maquet Quadrox-I Pediatric oxygenator without integrated arterial filter (parallel arrangement), 1/4 in. ID tubing A-V loop, and a 12-Fr arterial cannula, primed with lactated Ringer's solution and packed red blood cells...
June 8, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28596491/intraoperative-use-of-dexmedetomidine-promotes-postoperative-sleep-and-recovery-following-radical-mastectomy-under-general-anesthesia
#18
Cunxian Shi, Jin Jin, Qiang Pan, Shan Song, Kezhong Li, Jiahai Ma, Tao Li, Zhi Li
Postoperative sleep disturbance and fatigue following radical mastectomy were high risks for prolonged convalescence in patients with breast cancer. The present study was designed to observe the effect of intraoperative use of dexmedetomidine on postoperative sleep, fatigue and recovery following radical mastectomy under general anesthesia. Forty-seven patients were randomized into two groups that were maintained with propofol/remifentanil/Ringer's solution (Control group), or propofol/remifentanil/Dexmedetomidine (DEX group) for surgery under general anesthesia...
May 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28590768/effect-of-hydroalcoholic-extract-of-capsella-bursa-pastoris-on-early-postpartum-hemorrhage-a-clinical-trial-study
#19
Sahar Ghalandari, Nourossadat Kariman, Zohre Sheikhan, Faraz Mojab, Moghadameh Mirzaei, Hadis Shahrahmani
OBJECTIVES: Postpartum hemorrhage (PPH) is one of three main causes of maternal mortality and a life-threatening condition throughout the world. PPH can have irreversible complications for the mother even if it does not lead to death. This study was conducted to determine the effect of hydroalcoholic extract of Capsella bursa pastoris on early PPH. DESIGN: The present study was a single-blinded, randomized, clinical trial. SETTING: The study was conducted in Afzalipour Hospital of Kerman in 2015...
June 7, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28588776/management-of-infusion-reactions-associated-with-cetuximab-treatment-a-case-report
#20
Naohiro Ohshita, Yuri Ichimaru, Shoko Gamoh, Kaname Tsuji, Naotaka Kishimoto, Yasuo M Tsutsumi, Yoshihiro Momota
Cetuximab is a drug targeting the epidermal growth factor receptor, which is indicated for the treatment of unresectable advanced or recurrent head and neck or colorectal cancer. Cetuximab also enhances the cytotoxic effects of radiation in squamous cell carcinoma. The severity of infusion reactions (IR) is categorized from grade 1 to 5; grades 3 and 4 are associated with life-threatening reactions (anaphylaxis), whereas grade 5 indicates death. The incidence of grade 3-4 IR with premedication is reported to be 1...
June 2017: Molecular and Clinical Oncology
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