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https://www.readbyqxmd.com/read/27925247/does-flexible-arterial-tubing-retain-more-hemodynamic-energy-during-pediatric-pulsatile-extracorporeal-life-support
#1
Shigang Wang, Allen R Kunselman, Akif Ündar
The objective of this study was to evaluate the hemodynamic performance and energy transmission of flexible arterial tubing as the arterial line in a simulated pediatric pulsatile extracorporeal life support (ECLS) system. The ECLS circuit consisted of a Medos Deltastream DP3 diagonal pump head, Medos Hilite 2400 LT oxygenator, Biomedicus arterial/venous cannula (10 Fr/14 Fr), 3 feet of polyvinyl chloride (PVC) arterial tubing or latex rubber arterial tubing, primed with lactated Ringer's solution and packed red blood cells (hematocrit 40%)...
December 7, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27922880/investigation-of-key-circuit-constituents-affecting-drug-sequestration-during-extracorporeal-membrane-oxygenation-treatment
#2
Jiheum Park, Dong Ah Shin, Saram Lee, Young-Jae Cho, Sanghoon Jheon, Jung Chan Lee, Hee Chan Kim
We quantified the influence of the elements of the extracorporeal oxygenation (ECMO) circuit on drug sequestration by focusing on the interactions between materials and drugs. Tubing of three different brands (Tygon/Maquet/Terumo) and oxygenators of two different brands (Maquet/Terumo) were used. Drugs included dexmedetomidine, meropenem, and heparin which were dissolved in deionized water. Tubing was cut into ~7 cm sections and allowed drug solutions enclosed inside by clamping both ends. The oxygenator housing, gas membrane, and heat exchanger were dissected into ~1 g pieces and submerged into drug solutions...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27913300/suppression-of-nadph-oxidase-attenuates-hypoxia-induced-dysfunctions-of-endothelial-progenitor-cells
#3
Bin Liu, Kai-Di Ren, Jing-Jie Peng, Tao Li, Xiu-Ju Luo, Chengming Fan, Jin-Fu Yang, Jun Peng
NADPH oxidases (NOX) - derived reactive oxygen species (ROS) contribute to oxidative injury in hypoxia-induced pulmonary arterial hypertension. This study aims to evaluate the status of NOX in endothelial progenitor cells (EPCs) under hypoxic condition and to determine whether NOX inhibitors could attenuate hypoxia-induced dysfunctions of EPCs. EPCs were isolated from peripheral blood of SD rats and subjected to hypoxia (O2/N2/CO2, 1/94/5) for 24 h. The cells were collected for β-galactosidase or Hoechst staining, or for functional analysis (migration, adhesion and tube formation)...
November 29, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27912161/a-prospective-randomized-trial-of-tapered-cuff-endotracheal-tubes-with-intermittent-subglottic-suctioning-in-preventing-ventilator-associated-pneumonia-in-critically-ill-patients
#4
Ata Mahmoodpoor, Hadi Hamishehkar, Masoud Hamidi, Kamran Shadvar, Sarvin Sanaie, Samad Ej Golzari, Zahid Hussain Khan, Nader D Nader
BACKGROUND: Endotracheal tube placement is necessary for the control of the airway in patients who are mechanically ventilated. However, prolonged duration of endotracheal tube placement contributes to the development of ventilator-associated pneumonias (VAPs). The aim of this study was to evaluate whether subglottic suctioning using TaperGuard EVAC tubes was effective in decreasing the frequency of VAP. METHODS: A total of 276 mechanically ventilated patients for more than 72 hours were randomly assigned to group E (EVAC tube) and group C (conventional tube)...
November 14, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27910405/high-dynamic-range-neutron-time-of-flight-detector-used-to-infer-the-d-t-n-4-he-and-d-d-n-3-he-reaction-yield-and-ion-temperature-on-omega
#5
C J Forrest, V Yu Glebov, V N Goncharov, J P Knauer, P B Radha, S P Regan, M H Romanofsky, T C Sangster, M J Shoup, C Stoeckl
Upgraded microchannel-plate-based photomultiplier tubes (MCP-PMT's) with increased stability to signal-shape linearity have been implemented on the 13.4-m neutron time-of-flight (nTOF) detector at the Omega Laser Facility. This diagnostic uses oxygenated xylene doped with diphenyloxazole C15H11NO + p-bis-(o-methylstyryl)-benzene (PPO + bis-MSB) wavelength shifting dyes and is coupled through four viewing ports to fast-gating MCP-PMT's, each with a different gain to allow one to measure the light output over a dynamic range of 1 × 10(6)...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27903586/microrna-125a-5p-alleviates-the-deleterious-effects-of-ox-ldl-on-multiple-functions-of-human-brain-microvessel-endothelial-cells
#6
Qunwen Pan, Xiaorong Liao, Hua Liu, Yan Wang, Yanfang Chen, Bin Zhao, Eric Lazartigues, Yi Yang, Xiaotang Ma
MicroRNA-125a-5p(miR-125a-5p)could participate in the pathogenesis of vascular diseases. In this study, we investigated the role of miR-125a-5p in oxidized low density lipoprotein (ox-LDL) induced functional changes in human brain microvessel endothelial cells (HBMEC). The reactive oxygen species (ROS) production, nitric oxide (NO) generation, senescence, apoptosis and functions of HBMEC were analyzed. For mechanism study, the epidermal growth factor receptor (EGFR)/ extracellular regulated protein kinases (ERK)/ p38 mitogen-activated protein kinase (p38 MAPK), and phosphatidylinositol-3-kinase (PI3K), serine/threonine kinase (Akt), endothelial nitric oxide synthase (eNOS), and p-Akt were analyzed...
November 30, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27899144/hypoxia-induced-responses-by-endothelial-colony-forming-cells-are-modulated-by-placental-growth-factor
#7
Michelle B Hookham, Imran H A Ali, Christina L O'Neill, Emer Hackett, Melanie H Lambe, Tina Schmidt, Reinhold J Medina, Sara Chamney, Bharathi Rao, Eibhlin McLoone, David Sweet, Alan W Stitt, Derek P Brazil
BACKGROUND: Endothelial colony-forming cells (ECFCs), also termed late outgrowth endothelial cells, are a well-defined circulating endothelial progenitor cell type with an established role in vascular repair. ECFCs have clear potential for cell therapy to treat ischaemic disease, although the precise mechanism(s) underlying their response to hypoxia remains ill-defined. METHODS: In this study, we isolated ECFCs from umbilical cord blood and cultured them on collagen...
November 29, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27896179/clinical-factors-associated-with-the-non-operative-airway-management-of-patients-with-robin-sequence
#8
Frank P Albino, Benjamin C Wood, Kevin D Han, Sojung Yi, Mitchel Seruya, Gary F Rogers, Albert K Oh
BACKGROUND: The indications for surgical airway management in patients with Robin sequence (RS) and severe airway obstruction have not been well defined. While certain patients with RS clearly require surgical airway intervention and other patients just as clearly can be managed with conservative measures alone, a significant proportion of patients with RS present with a more confusing and ambiguous clinical course. The purpose of this study was to describe the clinical features and objective findings of patients with RS whose airways were successfully managed without surgical intervention...
November 2016: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/27882084/staged-bilateral-single-port-thoracoscopic-lung-volume-reduction-surgery-a-report-of-11-cases
#9
Miao Zhang, Heng Wang, Xue-Feng Pan, Wen-Bin Wu, Hui Zhang
The aim of the present study was to investigate the feasibility and efficacy of staged bilateral single-port thoracoscopic lung volume reduction surgery (LVRS) for patients with chronic obstructive pulmonary emphysema (COPE). Eleven male patients with a mean age of 60.27±12.11 years with bilateral COPE and bullae were admitted to the Department of Thoracic Surgery, Xuzhou Central Hospital from January 2013 to June 2014. The patients underwent staged bilateral single-port thoracoscopic LVRS. The hyperinflated bullae were resected using endoscopic staplers (Endo-GIA), followed by continuous suture and biological glue for reinforcement of the margin...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27879954/comparison-of-terminal-extubation-and-terminal-weaning-as-mechanical-ventilation-withdrawal-in-icu-patients
#10
Damien Thellier, Pierre Y Delannoy, Olivier Robineau, Agnès Meybeck, Nicolas Boussekey, Arnaud Chiche, Olivier Leroy, Hugues Georges
BACKGROUND: Terminal extubation (TE) is applied in some intensive care unit (ICU) patients when a decision of withdrawal of mechanical ventilation is decided. Other units prefer terminal weaning (TW) with no removal of the endotracheal tube. We report our experience with these two procedures. METHODS: We conducted a retrospective study analyzing patients deceased in our ICU after a decision of life sustained therapy (LST) during the year 2013. TE was proposed to family members for patients presenting with two medical conditions: lack of vasoactive drugs (VAD) and SaO2 > 95% with a FIO2 < 50%...
November 23, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27878927/the-septin-protein-sep4-facilitates-host-infection-by-plant-fungal-pathogens-via-mediating-initiation-of-infection-structure-formation
#11
Hui-Qiang Feng, Gui-Hua Li, Du Shun-Wen, Song Yang, Xue-Qian Li, Paul de Figueiredo, Qing-Ming Qin
Many phytopathogenic fungi use infection structures (IFSs, i.e., appressoria and infection cushions) to penetrate host cuticles. However, the conserved mechanisms that mediate initiation of IFS formation in divergent pathogens upon sensing the presence of host plants remain obscure. Here, we demonstrate that a conserved septin gene SEP4 plays crucial roles in this process. Disruption of SEP4 in the plant gray mold fungus Botrytis cinerea completely blocked IFS formation and abolished the virulence of ΔBcsep4 mutants on unwounded hosts...
November 23, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27878894/downregulation-of-b-myb-promotes-senescence-via-the-ros-mediated-p53-p21-pathway-in-vascular-endothelial-cells
#12
Zhihui Zhou, Yanlin Yin, Qun Chang, Guanqun Sun, Jiahui Lin, Yalei Dai
OBJECTIVES: To reveal whether B-myb is involved in preventing senescence of vascular endothelial cells, and if so, to identify possible mechanisms for it. MATERIALS AND METHODS: C57/BL6 male mice and primary human aortic endothelial cells (HAECs) were used. Bleomycin was applied to induce stress-related premature senescence. B-myb knockdown was achieved using an siRNA technique and cell senescence was assessed using the senescence-associated β-galactosidase (SA-β-gal) assay...
November 23, 2016: Cell Proliferation
https://www.readbyqxmd.com/read/27876327/endotracheal-intubation-with-the-king-laryngeal-tube%C3%A2-in-situ-using-video-laryngoscopy-and-a-bougie-a-retrospective-case-series-and-cadaveric-crossover-study
#13
Kenneth W Dodd, Rebecca L Kornas, Matthew E Prekker, Lauren R Klein, Robert F Reardon, Brian E Driver
BACKGROUND: Removal of a functioning King laryngeal tube (LT) prior to establishing a definitive airway increases the risk of a "can't intubate, can't oxygenate" scenario. We previously described a technique utilizing video laryngoscopy (VL) and a bougie to intubate around a well-seated King LT with the balloons deflated; if necessary, the balloons can be rapidly re-inflated and ventilation resumed. OBJECTIVE: Our objective is to provide preliminary validation of this technique...
November 19, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27876258/normal-saline-instillation-before-suctioning-a-meta-analysis-of-randomized-controlled-trials
#14
Chia-Hui Wang, Jui-Chen Tsai, Shu-Fen Chen, Chien-Ling Su, Lawrence Chen, Chao-Chun Lin, Ka-Wai Tam
BACKGROUND: For airway management of intensive care unit (ICU) patients who are intubated, a 5-10-mL bolus of sterile normal saline (NS) solution is commonly instilled into an endotracheal or tracheostomy tube before suctioning. However, NS instillation has been associated with adverse events such as dyspnea, increasing heart rate, decreasing of oxygenation, blood pressure, and other vital parameters. OBJECTIVE: To conduct a systematic review and meta-analysis of randomized controlled trials (RCTs) to evaluate the necessity of NS instillation before suctioning in ICU patients...
November 18, 2016: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/27865477/tracheostomy-among-infants-with-hypoplastic-left-heart-syndrome-undergoing-cardiac-operations-a-multicenter-analysis
#15
Parthak Prodhan, Amit Agarwal, Nahed O ElHassan, Elijah H Bolin, Brandon Beam, Xiomara Garcia, Michael Gaies, Xinyu Tang
BACKGROUND: Less than 2.7% of infants undergoing congenital heart disease operations have difficulty weaning from invasive mechanical ventilation. In such instances, clinicians may choose to perform tracheostomy. Limited literature has examined tracheostomy placement specifically in infants with hypoplastic left heart syndrome (HLHS). This study evaluated the risk factors for tracheostomy placement in infants with HLHS and examined the outcomes of these infants before their first hospital discharge...
November 16, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27861453/barotrauma-risk-with-direct-connection-of-oxygen-tubing-to-an-endotracheal-tube
#16
Paul A Baker
No abstract text is available yet for this article.
December 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27860324/tracheobronchial-foreign-body-removal-in-infants-who-had-very-small-airways-a-prospective-clinical-trial
#17
Seung Hoon Woo, Jung Je Park, Minsu Kwon, Jun Sun Ryu, Jin Pyeong Kim
BACKGROUND AND AIMS: Tracheobronchial foreign body aspiration is a life-threatening emergency. Using a rigid bronchoscope with optical forceps is the most effective method for foreign body removal. However, occasionally for some infants these instruments could not be used, as they may be too large for their small airways. Here, they present the apnea technique with only an optical forceps for foreign body removal in infants with very small airways. METHODS: Foreign bodies were removed using only an optical forceps for infants who had very small diameter airways...
November 18, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27853339/experimental-demonstration-of-the-thermochemical-reduction-of-ceria-in-a-solar-aerosol-reactor
#18
Michael Welte, Rafik Barhoumi, Adrian Zbinden, Jonathan R Scheffe, Aldo Steinfeld
We report on the experimental demonstration of an aerosol solar reactor for the thermal reduction of ceria, as part of a thermochemical redox cycle for splitting H2O and CO2. The concept utilizes a cavity-receiver enclosing an array of alumina tubes, each containing a downward gravity-driven aerosol flow of ceria particles countercurrent to an inert sweep gas flow for intrinsic separation of reduced ceria and oxygen. A 2 kWth lab-scale prototype with a single tube was tested under radiative fluxes approaching 4000 suns, yielding reaction extents of up to 53% of the thermodynamic equilibrium at 1919 K within residence times below 1 s...
October 12, 2016: Industrial & Engineering Chemistry Research
https://www.readbyqxmd.com/read/27849437/optimum-temperature-of-oxygen-for-transpulmonary-hypothermia-with-cooled-oxygen-inhalation-a-preliminary-study-in-a-rat-model
#19
Banu Karakus Yilmaz, Hatice Topcu, Yahya A Acar, Duygu Sultan Oran, Sule Ozsoy, Erdem Çevik, Aylin Hakligor, Orhan Çinar
Cooled oxygen inhalation was hypothesized as a novel hypothermia technique in a previous study. In the current study, we aimed to determine the optimal temperature of oxygen for this method. This is a prospective, randomized, controlled, examiner-blinded experimental study conducted with 45 healthy, adult, Wistar Hannover male rats. Rats were randomly divided into five groups; group 1: +4°C intubated group (n = 7), group 2: +4°C nonintubated group (n = 9), group 3: +8°C intubated group (n = 9), group 4: +8°C nonintubated group (n = 9), and group 5: control group (n = 9)...
November 16, 2016: Therapeutic Hypothermia and Temperature Management
https://www.readbyqxmd.com/read/27847697/comparison-of-the-effect-of-open-and-closed-endotracheal-suctioning-methods-on-pain-and-agitation-in-medical-icu-patients-a-clinical-trial
#20
Raziyeh Dastdadeh, Abbas Ebadi, Amir Vahedian-Azimi
BACKGROUND: Endotracheal suctioning is a necessary procedure practiced by nurses in intensive care units to remove lung secretions. This procedure leads to higher oxygenation levels and reduced breathing difficulties. It also prevents atelectasis, pulmonary infections, and the accumulation of secretions. OBJECTIVES: The present study aims to compare the effectiveness of open and closed endotracheal suction tube systems on pain and agitation in patients under mechanical ventilation...
October 2016: Anesthesiology and Pain Medicine
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