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https://www.readbyqxmd.com/read/29643243/inefficient-hiv-1-trans-infection-of-cd4-t-cells-by-macrophages-from-hiv-1-nonprogressors-is-associated-with-altered-membrane-cholesterol-and-dc-sign
#1
Diana C DeLucia, Charles R Rinaldo, Giovanna Rappocciolo
Professional antigen presenting cells (APC: myeloid dendritic cells (DC) and macrophages (MΦ); B lymphocytes) mediate highly efficient HIV-1 infection of CD4+ T cells, termed trans infection, that could contribute to HIV-1 pathogenesis. We have previously shown that lower cholesterol content in DC and B lymphocytes is associated with a lack of HIV-1 trans infection in HIV-1 infected nonprogressors (NP). Here we assessed whether HIV-1 trans infection mediated by another major APC, MΦ, is deficient in NP due to altered cholesterol metabolism...
April 11, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29627403/ventilatory-practices-in-extremely-low-birth-weight-infants-in-a-level-iii-neonatal-intensive-care-unit
#2
S Abreu-Pereira, R Pinto-Lopes, F Flôr-de-Lima, G Rocha, H Guimarães
INTRODUCTION: Although non-invasive forms of ventilation have recently spread in neonatology, invasive ventilation still plays a key role in the support of extremely low birth weight (ELBW) infants. The purpose of this study was to assess changes in neonatal ventilation practices for ELBW infants and compare outcomes between two epochs (2005-2009 vs. 2010-2015) to analyze progression stemming from the implementation of newer clinical guidelines. MATERIALS AND METHODS: We conducted a retrospective study with data collection from all ELBW infants born between 2005 and 2015 in our center through their individual clinical records...
April 4, 2018: Pulmonology
https://www.readbyqxmd.com/read/29189671/neural-breathing-pattern-and-patient-ventilator-interaction-during-neurally-adjusted-ventilatory-assist-and-conventional-ventilation-in-newborns
#3
Pradeep V Mally, Jennifer Beck, Christer Sinderby, Martha Caprio, Sean M Bailey
OBJECTIVE: To compare neurally adjusted ventilatory assist and conventional ventilation on patient-ventilator interaction and neural breathing patterns, with a focus on central apnea in preterm infants. DESIGN: Prospective, observational cross-over study of intubated and ventilated newborns. Data were collected while infants were successively ventilated with three different ventilator conditions (30 min each period): 1) synchronized intermittent mandatory ventilation (SIMV) combined with pressure support at the clinically prescribed, SIMV with baseline settings (SIMVBL), 2) neurally adjusted ventilatory assist, 3) same as SIMVBL, but with an adjustment of the inspiratory time of the mandatory breaths (SIMV with adjusted settings [SIMVADJ]) using feedback from the electrical activity of the diaphragm)...
January 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29077984/neurally-adjusted-ventilatory-assist-compared-to-other-forms-of-triggered-ventilation-for-neonatal-respiratory-support
#4
REVIEW
Thomas E Rossor, Katie A Hunt, Sandeep Shetty, Anne Greenough
BACKGROUND: Effective synchronisation of infant respiratory effort with mechanical ventilation may allow adequate gas exchange to occur at lower peak airway pressures, potentially reducing barotrauma and volutrauma and development of air leaks and bronchopulmonary dysplasia. During neurally adjusted ventilatory assist ventilation (NAVA), respiratory support is initiated upon detection of an electrical signal from the diaphragm muscle, and pressure is provided in proportion to and synchronous with electrical activity of the diaphragm (EADi)...
October 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29072677/the-impact-of-neurally-adjusted-ventilatory-assist-mode-on-respiratory-severity-score-and-energy-expenditure-in-infants-a-randomized-crossover-trial
#5
J L Rosterman, E K Pallotto, W E Truog, H Escobar, K A Meinert, A Holmes, H Dai, W M Manimtim
OBJECTIVE: Examine respiratory severity scores (RSS) (mean airway pressure × fraction of inspired oxygen) and resting energy expenditure (REE) on neurally adjusted ventilatory assist (NAVA) compared with synchronized intermittent mandatory ventilation with pressure controlled and supported breath (SIMV (PC)PS). STUDY DESIGN: A randomized, crossover trial in a level IV neonatal intensive care unit. Twenty-four patients were ventilated with NAVA or SIMV (PC) PS for 12 h and then crossed over to the alternative mode for 12 h...
January 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28986852/effect-of-inspiratory-synchronization-during-pressure-controlled-ventilation-on-lung-distension-and-inspiratory-effort
#6
Nuttapol Rittayamai, François Beloncle, Ewan C Goligher, Lu Chen, Jordi Mancebo, Jean-Christophe M Richard, Laurent Brochard
BACKGROUND: In pressure-controlled (PC) ventilation, tidal volume (VT ) and transpulmonary pressure (PL ) result from the addition of ventilator pressure and the patient's inspiratory effort. PC modes can be classified into fully, partially, and non-synchronized modes, and the degree of synchronization may result in different VT and PL despite identical ventilator settings. This study assessed the effects of three PC modes on VT , PL , inspiratory effort (esophageal pressure-time product, PTPes ), and airway occlusion pressure, P0...
October 6, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28975076/comparing-the-effect-of-adaptive-support-ventilation-asv-and-synchronized-intermittent-mandatory-ventilation-simv-on-respiratory-parameters-in-neurosurgical-icu-patients
#7
Mohammadreza Ghodrati, Alireza Pournajafian, Ali Khatibi, Mohammad Niakan, Mohammad Hosein Hemadi, Mohammad Mahdi Zamani
BACKGROUND: Various modes of mechanical ventilation have different effects on respiratory variables. Lack of patients' neuro-ventilatory coordination and increasing the work of breathing are major disadvantages in mechanically ventilated patients. OBJECTIVES: This study is conducted to compare the respiratory parameters differences in Adaptive support ventilation (ASV) and synchronized intermittent mandatory ventilation (SIMV) modes in neurosurgical ICU patients...
December 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28856111/adaptive-support-ventilation-reduces-the-incidence-of-atelectasis-in-patients-undergoing-coronary-artery-bypass-grafting-a-randomized-clinical-trial
#8
Seyed Tayeb Moradian, Yaser Saeid, Abbas Ebadi, Ali Hemmat, Mohammad Saeid Ghiasi
BACKGROUND: Pulmonary complications are common following cardiac surgery and can lead to increased morbidity, mortality, and healthcare costs. Atelectasis is the most common respiratory complication following cardiac surgery. One of the most important methods for reducing pulmonary complications is supportive care with protective ventilation strategies. In this study, we aimed to assess the effect of adaptive support ventilation (ASV) on atelectasis in patients undergoing cardiac surgery...
June 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28713509/mechanical-ventilation-practice-in-egyptian-pediatric-intensive-care-units
#9
Bassant Salah Meligy, Sally Kamal, Seham Awad El Sherbini
INTRODUCTION: Mechanical ventilation is one of the indispensable tools in pediatric intensive care units. Few studies addressed the epidemiology of pediatric patients on mechanical ventilation and the frequently used modes of ventilation. This is the first study to describe the practice of mechanical ventilation (MV) in Egyptian pediatric intensive care units (PICUs). METHODS: This prospective observational study was conducted from January 2014 to December 2014 in two pediatric intensive care units at Cairo University Pediatric Hospital...
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28702933/characterization-of-simbu-serogroup-virus-infections-in-type-i-interferon-receptor-knock-out-mice
#10
Kerstin Tauscher, Kerstin Wernike, Melina Fischer, Anne Wegelt, Bernd Hoffmann, Jens Peter Teifke, Martin Beer
In late 2011, Schmallenberg virus (SBV), a novel, arthropod-borne, teratogenic orthobunyavirus, emerged near the German/Dutch border and thereafter spread rapidly throughout the continent thereby causing great economic losses in European livestock. SBV mainly infects ruminants and closely related viruses such as Sabo virus (SABOV), Simbu virus (SIMBUV) and Sathuperi virus (SATV) have been isolated from their insect-vectors or putative ruminant hosts. However, information about their pathogenesis and in vivo studies with SABOV, SIMBUV, and SATV are scarce...
July 12, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28698268/effects-of-volume-guaranteed-ventilation-combined-with-two-different-modes-in-preterm-infants
#11
Sezin Unal, Ebru Ergenekon, Selma Aktas, Nilgun Altuntas, Serdar Beken, Ebru Kazanci, Ferit Kulali, Ozlem Gulbahar, Ibrahim M Hirfanoglu, Esra Onal, Canan Turkyilmaz, Esin Koc, Yildiz Atalay
BACKGROUND: Volume-controlled ventilation modes have been shown to reduce duration of mechanical ventilation, incidence of chronic lung disease, failure of primary mode of ventilation, hypocarbia, severe intraventricular hemorrhage, pneumothorax, and periventricular leukomalacia in preterm infants when compared with pressure limited ventilation modes. Volume-guarantee (VG) ventilation is the most commonly used mode for volume-controlled ventilation. Assist control, pressure-support ventilation (PSV), and synchronized intermittent mandatory ventilation (SIMV) can be combined with VG; however, there is a lack of knowledge on the superiority of each regarding clinical outcomes...
December 2017: Respiratory Care
https://www.readbyqxmd.com/read/28614936/-the-clinical-application-of-simv-psv-during-the-period-of-extubation-in-whole%C3%A2-lung-lavage
#12
X Y Xiao
No abstract text is available yet for this article.
April 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28377920/automated-weaning-from-mechanical-ventilation-after-off-pump-coronary-artery-bypass-grafting
#13
Evgenia V Fot, Natalia N Izotova, Angelika S Yudina, Aleksei A Smetkin, Vsevolod V Kuzkov, Mikhail Y Kirov
BACKGROUND: The discontinuation of mechanical ventilation after coronary surgery may prolong and significantly increase the load on intensive care unit personnel. We hypothesized that automated mode using INTELLiVENT-ASV can decrease duration of postoperative mechanical ventilation, reduce workload on medical staff, and provide safe ventilation after off-pump coronary artery bypass grafting (OPCAB). The primary endpoint of our study was to assess the duration of postoperative mechanical ventilation during different modes of weaning from respiratory support (RS) after OPCAB...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28330440/prevalence-and-predictors-of-intra-abdominal-hypertension-and-compartment-syndrome-in-surgical-patients-in-critical-care-units-at-kenyatta-national-hospital
#14
A Muturi, P Ndaguatha, Daniel Ojuka, A Kibet
BACKGROUND: Intra-abdominal hypertension (IAH) affects almost every organ sytem.If it is not detected early and corrected, mortality would be high. The prevalence of IAH and abdominal compartment syndrome (ACS) at Kenyatta National Hospital (KNH) critical care units is not known. The aim of this sudy was to determine the prevalence and factors associated with development of IAH/ACS among critically ill surgical patients. METHODS: This was a cross sectional descriptive study involving surgical patients in critical care units at KNH, carried out from March 2015 to October 2015...
March 23, 2017: BMC Emergency Medicine
https://www.readbyqxmd.com/read/28267272/effect-of-ventilator-mode-on-patient-ventilator-synchrony-and-work-of-breathing-in-neonatal-pigs
#15
Shayna M Wood, Tracy L Thurman, Shirley J Holt, Shasha Bai, Mark J Heulitt, Sherry E Courtney
BACKGROUND: Patient-ventilator asynchrony can result in increased work of breathing (WOB) and need for increased sedation, as well as respiratory muscle fatigue and prolonged mechanical ventilation. Different ventilator modes may result in varying degrees of asynchrony and WOB. OBJECTIVE: The objectives of this study were to assess the incidence of asynchrony and the effect of asynchrony on WOB in three modes of ventilation: pressure regulated volume control (PRVC), synchronized intermittent mandatory ventilation/volume control plus pressure support (SIMV/VC plus PS), and SIMV/PRVC plus PS...
July 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28042547/simvastatin-attenuates-chromium-induced-nephrotoxicity-in-rats
#16
Zahra Goodarzi, Esmaeil Karami, Massumeh Ahmadizadeh
BACKGROUND: Hexavalent Chromium (Cr (VI)) compounds are extremely toxic and have been demonstrated to induce nephrotoxicity associated with oxidative stress in humans and animals. The wide environmental distribution of these agents lead to an increase interest of preventive effects of its adverse effects. OBJECTIVES: The propose of the present study was to determine the potential protective effects of simvastatin (SIMV) on Cr (VI)-induced nephrotoxicity in rat. MATERIALS AND METHODS: Forty-eight adult male Wistar rats (180-220 g BW) were randomly assigned to eight groups (n = 6)...
January 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28028515/comparison-of-respiratory-and-hemodynamic-stability-in-patients-with-traumatic-brain-injury-ventilated-by-two-ventilator-modes-pressure-regulated-volume-control-versus-synchronized-intermittent-mechanical-ventilation
#17
Omid Aghadavoudi, Babak Alikiaii, Fariba Sadeghi
BACKGROUND: This study aimed to compare pressure regulated volume control (PRVC) and synchronized intermittent mechanical ventilation (SIMV) modes of ventilation according to respiratory and hemodynamic stability in patients with traumatic brain injury (TBI) admitted to Intensive Care Unit (ICU). MATERIALS AND METHODS: In a randomized, single-blinded, clinical trial study, 100 patients who hospitalized in ICU due to TBI were selected and randomly divided into two groups...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/27854117/treatment-of-neonates-with-respiratory-distress-syndrome-by-proportional-assist-ventilation-plus-synchronized-intermittent-mandatory-ventilation-a-comparison-study
#18
Rong Wu, Zhao F Tian, Xiang Y Kong, Shao D Hua, Jin H Hu, Guo F Zhen
BACKGROUND: The proportion assisted ventilation (PAV) can improve patient-ventilator interaction, reduce the incidence of end-expiratory asynchrony and increase the time of synchrony. PAV could compensate for the leaks by Elastic and resistive unloading and thus is ideal for neonates with uncuffed airways. The aim of this study was to compare the relevant clinical parameters of neonates with respiratory distress syndrome(RDS) who are surported by PAV plus synchronized intermittent mandatory ventilation (SIMV) and SIMV...
November 17, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27623133/impact-of-targeted-volume-ventilation-on-pulmonary-dynamics-in-preterm-infants-with-respiratory-distress-syndrome
#19
RANDOMIZED CONTROLLED TRIAL
Senem Alkan Ozdemir, Esra Arun Ozer, Ozkan Ilhan, Sumer Sutcuoglu
BACKGROUND: Mechanical ventilation is an essential therapy in the treatment of respiratory failure in preterm infants. However, optimal ventilation strategy continues to be difficult to define. OBJECTIVE: To compare the effects of volume guarantee (VG) combined with intermittent mandatory ventilation (SIMV) and VG combined with pressure support ventilation (PSV) on the pulmonary mechanics and short term prognosis in preterm infants with respiratory distress syndrome...
February 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27581993/synchronized-mechanical-ventilation-for-respiratory-support-in-newborn-infants
#20
REVIEW
Anne Greenough, Thomas E Rossor, Adesh Sundaresan, Vadivelam Murthy, Anthony D Milner
BACKGROUND: During synchronised mechanical ventilation, positive airway pressure and spontaneous inspiration coincide. If synchronous ventilation is provoked, adequate gas exchange should be achieved at lower peak airway pressures, potentially reducing baro/volutrauma, air leak and bronchopulmonary dysplasia. Synchronous ventilation can potentially be achieved by manipulation of rate and inspiratory time during conventional ventilation and employment of patient-triggered ventilation. OBJECTIVES: To compare the efficacy of:(i) synchronised mechanical ventilation, delivered as high-frequency positive pressure ventilation (HFPPV) or patient-triggered ventilation (assist control ventilation (ACV) and synchronous intermittent mandatory ventilation (SIMV)), with conventional ventilation or high-frequency oscillation (HFO);(ii) different types of triggered ventilation (ACV, SIMV, pressure-regulated volume control ventilation (PRVCV), SIMV with pressure support (PS) and pressure support ventilation (PSV))...
September 1, 2016: Cochrane Database of Systematic Reviews
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