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Physiology critical care

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https://www.readbyqxmd.com/read/28107357/vasopressor-use-for-severe-hypotension-a-multicentre-prospective-observational-study
#1
Francois Lamontagne, Deborah J Cook, Maureen O Meade, Andrew Seely, Andrew G Day, Emmanuel Charbonney, Karim Serri, Yoanna Skrobik, Paul Hebert, Charles St-Arnaud, Hector Quiroz-Martinez, Michaël Mayette, Daren K Heyland
BACKGROUND: The optimal approach to titrate vasopressor therapy is unclear. Recent sepsis guidelines recommend a mean arterial pressure (MAP) target of 65 mmHg and higher for chronic hypertensive patients. As data emerge from clinical trials comparing blood pressure targets for vasopressor therapy, an accurate description of usual care is required to interpret study results. Our aim was to measure MAP values during vasopressor therapy in Canadian intensive care units (ICUs) and to compare these with stated practices and guidelines...
2017: PloS One
https://www.readbyqxmd.com/read/28107096/implementation-of-an-aggressive-enteral-nutrition-protocol-and-the-effect-on-clinical-outcomes
#2
Daniel Dante Yeh, Catrina Cropano, Sadeq A Quraishi, Eva Fuentes, Haytham M A Kaafarani, Jarone Lee, Yuchiao Chang, George Velmahos
BACKGROUND: Macronutrient deficiency in critical illness is associated with worse outcomes. We hypothesized that an aggressive enteral nutrition (EN) protocol would result in higher macronutrient delivery and fewer late infections. METHODS: We enrolled adult surgical intensive care unit (ICU) patients receiving >72 hours of EN from July 2012 to June 2014. Our intervention consisted of increasing protein prescription (2.0-2.5 vs 1.5-2.0 g/kg/d) and compensatory feeds for EN interruption...
January 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28106832/plaimos-a-remote-mobile-healthcare-platform-to-monitor-cardiovascular-and-respiratory-variables
#3
Ramses Miramontes, Raúl Aquino, Arturo Flores, Guillermo Rodríguez, Rafael Anguiano, Arturo Ríos, Arthur Edwards
The number of elderly and chronically ill patients has grown significantly over the past few decades as life expectancy has increased worldwide, leading to increased demands on the health care system and significantly taxing traditional health care practices. Consequently, there is an urgent need to use technology to innovate and more constantly and intensely monitor, report and analyze critical patient physiological parameters beyond conventional clinical settings in a more efficient and cost effective manner...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28105784/what-prevents-critically-ill-patients-with-respiratory-failure-from-using-non-invasive-positive-pressure-ventilation-a-mixed-methods-study
#4
Hiroaki Murata, Tomoko Inoue, Osamu Takahashi
AIM: To identify the factors that prevent patients in respiratory failure from using noninvasive positive pressure ventilation (NPPV). The following were evaluated: (i) the patients who converted from NPPV to endotracheal intubation; and (ii) the patients who abandoned NPPV. METHODS: Patients were interviewed regarding their experience with NPPV. Next, the factors that prevented the continuation of NPPV were identified and those data were collected retrospectively from medical records...
January 20, 2017: Japan Journal of Nursing Science: JJNS
https://www.readbyqxmd.com/read/28105603/resuscitation-fluid-composition-affects-hepatic-inflammation-in-a-murine-model-of-early-sepsis
#5
Amanda L Patrick, Peter M Grin, Nicole Kraus, Michelle Gold, Matthew Berardocco, Patricia C Liaw, Alison E Fox-Robichaud
BACKGROUND: Fluid resuscitation is a crucial therapy for sepsis, and the use of balanced fluids and/or isotonic albumin may improve patient survival. We have previously demonstrated that resuscitation with normal saline results in increased hepatic leukocyte recruitment in a murine model of sepsis. Given that clinical formulations of albumin are in saline, our objectives were to develop a novel balanced electrolyte solution specifically for sepsis and to determine if supplementing this solution with albumin would improve the inflammatory response in sepsis...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28102514/carbapenemase-producing-klebsiella-pneumoniae-bloodstream-infection-in-critically-ill-patients-risk-factors-and-predictors-of-mortality
#6
M Papadimitriou-Olivgeris, F Fligou, C Bartzavali, A Zotou, A Spyropoulou, K Koutsileou, S Vamvakopoulou, N Sioulas, V Karamouzos, E D Anastassiou, I Spiliopoulou, M Christofidou, M Marangos
A significant increase in carbapenemase-producing Klebsiella pneumoniae (CP-Kp) bacteraemias has been observed worldwide. The objective of the present work was to study the risk factors and predictors of mortality of CP-Kp bacteraemias among critically ill patients. During a 4-year period (2012-3015), a matched 1:2 case-control study was conducted. Klebsiella pneumoniae was identified by Vitek 2 technology. Antibiotic susceptibility was performed by the agar disc diffusion method and Etest. The presence of the bla KPC, bla VIM and bla NDM genes was confirmed by polymerase chain reaction (PCR)...
January 19, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28092309/microbiota-targeted-therapies-on-the-intensive-care-unit
#7
Bastiaan W Haak, Marcel Levi, W Joost Wiersinga
PURPOSE OF REVIEW: The composition and diversity of the microbiota of the human gut, skin, and several other sites is severely deranged in critically ill patients on the ICU, and it is likely that these disruptions can negatively affect outcome. We here review new and ongoing studies that investigate the use of microbiota-targeted therapeutics in the ICU, and provide recommendations for future research. RECENT FINDINGS: Practically every intervention in the ICU as well as the physiological effects of critical illness itself can have a profound impact on the gut microbiota...
January 13, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28086760/education-of-pediatric-subspecialty-fellows-in-transport-medicine-a-national-survey
#8
Geoffrey E Mickells, Denise M Goodman, Ranna A Rozenfeld
BACKGROUND: The transport of critically ill patients to children's hospitals is essential to current practice. The AAP Section on Transport Medicine has raised concerns about future leadership in the field as trainees receive less exposure to transport medicine. This study identifies the priorities of pediatric subspecialty fellows, fellowship directors and nursing directors in transport medicine education. METHODS: Internet based surveys were distributed to fellows, fellowship directors and nursing directors of transport teams affiliated with ACGME-approved fellowships in Neonatal-Perinatal Medicine (NPM), Pediatric Critical Care Medicine (PCCM), and Pediatric Emergency Medicine (PEM)...
January 13, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28078187/bioelectric-field-enhancement-the-influence-on-membrane-potential-and-cell-migration-in-vitro
#9
Marcy C Purnell, Terence J Skrinjar
Objective: The extracellular matrix consists of critical components that affect fibroblast polarization and migration. The existence of both intrinsic and extrinsic electrical signals that play essential roles in the development, physiology, regeneration, and pathology of cells was discovered over a century ago. In this study, we study how the Bioelectric Field Enhancement (BEFE) device and its generated electromagnetic field (EMF) by continuous direct current (DC) significantly affect the membrane potential and cell migration of fibroblasts in vitro...
December 1, 2016: Advances in Wound Care
https://www.readbyqxmd.com/read/28075691/complexity-of-brain-signals-is-associated-with-outcome-in-preterm-infants
#10
Cristine Sortica da Costa, Michal M Placek, Marek Czosnyka, Brenno Cabella, Magdalena Kasprowicz, Topun Austin, Peter Smielewski
A characteristic feature of complex healthy biological systems is the ability to react and adapt to minute changes in the environment. This 'complexity' manifests itself in highly irregular patterns of various physiological measurements. Here, we apply Multiscale Entropy (MSE) analysis to assess the complexity of systemic and cerebral near-infrared spectroscopy (NIRS) signals in a cohort of 61 critically ill preterm infants born at median (range) gestational age of 26 (23-31) weeks, before 24 h of life. We further correlate the complexity of these parameters with brain injury and mortality...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28074985/-characteristics-and-evolution-of-patients-admitted-to-a-public-hospital-intensive-care-unit
#11
Carolina Ruiz, Miguel Ángel Díaz, Juan Marcelo Zapata, Sebastián Bravo, Sergio Panay, Cristina Escobar, Jorge Godoy, Max Andresen, Ricardo Castro
BACKGROUND: The epidemiology of critical patients in Chile could differ from that reported in international studies. AIM: To describe the causes of admission and evolution of patients who were admitted to the ICU (Intensive Care Unit) of a general hospital in Chile in a two-year period (2012-2013). PATIENTS AND METHODS: A retrospective study was carried out using the ICU database. The following variables were registered: admission diagnosis, APACHE II (Acute Physiology and Chronic Health Evaluation), days of mechanical ventilation (MV), ICU length of stay and ICU and hospital survival...
October 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28069958/properdin-binding-to-complement-activating-surfaces-depends-on-initial-c3b-deposition
#12
Morten Harboe, Christina Johnson, Stig Nymo, Karin Ekholt, Camilla Schjalm, Julie K Lindstad, Anne Pharo, Bernt Christian Hellerud, Kristina Nilsson Ekdahl, Tom Eirik Mollnes, Per H Nilsson
Two functions have been assigned to properdin; stabilization of the alternative convertase, C3bBb, is well accepted, whereas the role of properdin as pattern recognition molecule is controversial. The presence of nonphysiological aggregates in purified properdin preparations and experimental models that do not allow discrimination between the initial binding of properdin and binding secondary to C3b deposition is a critical factor contributing to this controversy. In previous work, by inhibiting C3, we showed that properdin binding to zymosan and Escherichia coli is not a primary event, but rather is solely dependent on initial C3 deposition...
January 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28057057/is-platelet-transfusion-associated-with-hospital-acquired-infections-in-critically-ill-patients
#13
Cécile Aubron, Andrew W Flint, Michael Bailey, David Pilcher, Allen C Cheng, Colin Hegarty, Antony Martinelli, Michael C Reade, Rinaldo Bellomo, Zoe McQuilten
BACKGROUND: Platelets are commonly transfused to critically ill patients. Reports suggest an association between platelet transfusion and infection. However, there is no large study to have determined whether platelet transfusion in critically ill patients is associated with hospital-acquired infection. METHODS: We conducted a multi-centre study using prospectively maintained databases of two large academic intensive care units (ICUs) in Australia. Characteristics of patients who received platelets in ICUs between 2008 and 2014 were compared to those of patients who did not receive platelets...
January 6, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28053241/comparative-biology-of-pain-what-invertebrates-can-tell-us-about-how-nociception-works
#14
Brian D Burrell
The inability to adequately treat chronic pain is a worldwide health care crisis. Pain has both an emotional and a sensory component and this latter component, nociception, refers specifically to the detection of damaging or potentially damaging stimuli. Nociception represents a critical interaction between an animal and its environment and exhibits considerable evolutionary conservation across species. Using comparative approaches to understand the basic biology of nociception could promote the development of novel therapeutic strategies to treat pain and studies of nociception in invertebrates can provide especially useful insights towards this goal...
January 4, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28050920/elderly-fall-risk-prediction-based-on-a-physiological-profile-approach-using-artificial-neural-networks
#15
Jafar Razmara, Mohammad Hassan Zaboli
Falls play a critical role in older people's life as it is an important source of morbidity and mortality in elders. In this article, elders fall risk is predicted based on a physiological profile approach using a multilayer neural network with back-propagation learning algorithm. The personal physiological profile of 200 elders was collected through a questionnaire and used as the experimental data for learning and testing the neural network. The profile contains a series of simple factors putting elders at risk for falls such as vision abilities, muscle forces, and some other daily activities and grouped into two sets: psychological factors and public factors...
November 1, 2016: Health Informatics Journal
https://www.readbyqxmd.com/read/28045915/alkalosis-in-critically-ill-patients-with-severe-sepsis-and-septic-shock
#16
Simon Kreü, Allan Jazrawi, Jan Miller, Amir Baigi, Michelle Chew
INTRODUCTION: Although metabolic alkalosis is a common occurrence in intensive care units (ICUs), no study has evaluated its prevalence or outcomes in patients with severe sepsis or septic shock. METHODS: This is a retrospective cohort study of critically ill patients suffering from severe sepsis and septic shock admitted to the ICUs of Halmstad and Varberg County hospitals. From 910 patient records, 627 patients met the inclusion criteria. We investigated the relationship between metabolic alkalosis and mortality...
2017: PloS One
https://www.readbyqxmd.com/read/28040411/emergency-department-critical-care-unit-for-critically-ill-cardiovascular-patients-an-observation-study
#17
Ken-Hui Fu, Yin-Ru Chen, Ju-Shin Fan, Yen-Chia Chen, Hsien-Hao Huang, Chorng-Kuang How, David Hung-Tsang Yen, Si-An Chen, Mu-Shun Huang
BACKGROUND: We investigated an intensive care model for acute critically cardiovascular emergency patients in the emergency department (ED) as compared with those in the coronary care unit (CCU) after ED visits. METHODS: We performed a retrospective cohort analysis of patients with acute cardiovascular emergency admitted to the intensive care unit in the ED (EICU) or CCU from January 1, 2010 to March 31, 2011 in an university-affiliated medical center. All clinical characteristics or predictors possibly related to in-hospital mortality were documented, completed, and measured via electronic medical records review...
December 28, 2016: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28039606/development-of-a-physiologically-based-pharmacokinetic-modelling-approach-to-predict-the-pharmacokinetics-of-vancomycin-in-critically-ill-septic-patients
#18
Christian Radke, Dagmar Horn, Christian Lanckohr, Björn Ellger, Michaela Meyer, Thomas Eissing, Georg Hempel
BACKGROUND AND OBJECTIVES: Sepsis is characterised by an excessive release of inflammatory mediators substantially affecting body composition and physiology, which can be further affected by intensive care management. Consequently, drug pharmacokinetics can be substantially altered. This study aimed to extend a whole-body physiologically based pharmacokinetic (PBPK) model for healthy adults based on disease-related physiological changes of critically ill septic patients and to evaluate the accuracy of this PBPK model using vancomycin as a clinically relevant drug...
December 31, 2016: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28031981/drug-delivery-biomaterials-and-nanomedicine-an-interview-with-daniel-s-kohane
#19
Daniel S Kohane
Daniel Kohane speaks to Francesca Lake, Managing Editor: Obtaining his MD and PhD in Physiology from Boston University (MA, USA), Dan Kohane went on to complete residencies in Pediatrics at Boston Children's Hospital (MA, USA) and Anesthesiology at Massachusetts General Hospital (USA), followed by a fellowship in Pediatric Critical Care at Boston Children's Hospital. He is currently a Professor of Anesthesia at Harvard Medical School (MA, USA) and a Senior Associate in Pediatric Critical Care at Boston Children's Hospital, where he directs the Laboratory for Biomaterials and Drug Delivery...
September 2016: Future Science OA
https://www.readbyqxmd.com/read/28028673/outcomes-of-elderly-critically-ill-medical-and-surgical-patients-a-multicentre-cohort-study
#20
Ian M Ball, Sean M Bagshaw, Karen E A Burns, Deborah J Cook, Andrew G Day, Peter M Dodek, Demetrios J Kutsogiannis, Sangeeta Mehta, John G Muscedere, Alexis F Turgeon, Henry T Stelfox, George A Wells, Ian G Stiell
PURPOSE: Very elderly (over 80 yr of age) critically ill patients admitted to medical-surgical intensive care units (ICUs) have a high incidence of mortality, prolonged hospital length of stay, and dependent living conditions should they survive. The primary purpose of this study is to describe the outcomes and differences in outcomes between very elderly medical patients and their surgical counterparts admitted to Canadian ICUs, thereby informing decision-making for clinicians and substitute decision-makers...
December 27, 2016: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
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