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Oxygen, clinical decision making

Gian Domenico Borasio, Ralf J Jox
At the end of life, several treatments are administered routinely that lack medical indication and may cause significant harm to patients. Examples include artificial hydration and oxygen therapy in the dying phase, as well as enteral nutrition in advanced dementia. Medical indication is defined as the appropriateness of a therapeutic or diagnostic measure in the patient's concrete clinical situation, in light of the best available evidence. The decision about the absence or presence of a medical indication is a core competence of physicians...
2016: Swiss Medical Weekly
Bradley A Maron, Nazzareno Galiè
Importance: Pulmonary arterial hypertension (PAH) is characterized by severe remodeling of the distal pulmonary arteries, increased pulmonary vascular resistance, and right ventricular dysfunction that promotes heart failure. Once regarded as largely untreatable, evidence-based decision making now guides clinical management of PAH and improves outcomes. However, misconceptions regarding the approach to PAH in the modern era are common and associated with substandard clinical care. Observations: The clinical profile of PAH has changed substantially since its original description...
November 16, 2016: JAMA Cardiology
C Campos-Calderón, R Montoya-Juárez, C Hueso-Montoro, E Hernández-López, F Ojeda-Virto, M P García-Caro
BACKGROUND: Many 'routine' interventions performed in hospital rooms have repercussions for the comfort of the patient, and the decision to perform them should depend on whether the patient is identified as in a terminal phase. The aim of this study is to analyse the health interventions performed and decisions made in the last days of life in patients with advanced oncological and non-oncological illness to ascertain whether identifying the patient's terminal illness situation has any effect on these decisions...
November 7, 2016: BMC Palliative Care
Josep Munuera, Gerard Blasco, María Hernández-Pérez, Pepus Daunis-I-Estadella, Antoni Dávalos, David S Liebeskind, Max Wintermark, Andrew Demchuk, Bijoy K Menon, Götz Thomalla, Kambiz Nael, Salvador Pedraza, Josep Puig
Vascular neuroimaging plays a decisive role in selecting the best therapy in patients with acute ischaemic stroke. However, compared with the arterial system, the role of veins has not been thoroughly studied. In this review, we present the major venous imaging-based biomarkers in ischaemic stroke. First, the presence of hypodense veins in the monophasic CT angiography ipsilateral to the arterial occlusion. Second, the asymmetry of venous drainage in the pathological cerebral hemisphere on CT and MRI dynamic angiography...
November 2, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
B Morton, K Nweze, J O'Connor, P Turton, E Joekes, J D Blakey, I D Welters
BACKGROUND: Pandemic influenza has potential to overwhelm healthcare resources. There is uncertainty over performance of existing triage tools for hospital admission and discharge decisions. AIM: Our aim was to identify clinical criteria that predict safe discharge from hospital and develop a pragmatic triage tool to guide physician decision-making. DESIGN: We retrospectively examined an existing database of patients who presented to the Royal Liverpool University Hospital during the 2010-11 influenza pandemic...
October 18, 2016: QJM: Monthly Journal of the Association of Physicians
Heather Graham Hambright, Rita Ghosh
Two prominent features of tumors that contribute to oncogenic survival signaling are redox disruption, or oxidative stress phenotype, and high autophagy signaling, making both phenomena ideal therapeutic targets. However, the relationship between redox disruption and autophagy signaling is not well characterized and the clinical impact of reactive oxygen species (ROS)-generating chemotherapeutics on autophagy merits immediate attention as autophagy largely contributes to chemotherapeutic resistance. In this commentary we focus on melanoma, using it as an example to Provide clarity to current literature regarding the roles of autophagy and redox signaling which can be applicable to initiation and maintenance of most tumor types...
October 24, 2016: Biochemical Pharmacology
Folafoluwa O Odetola, Renee R Anspach, Yong Y Han, Sarah J Clark
PURPOSE: To investigate the decision making underlying transfer of children with respiratory failure from level II to level I pediatric intensive care unit care. METHODS: Interviews with 19 eligible level II pediatric intensive care unit physicians about a hypothetical scenario of a 2-year-old girl in respiratory failure: RESULTS: At baseline, indices critical to management were as follows: OI (53%), partial pressure of oxygen in arterial blood (Pao2)/Fio2 (32%), and inflation pressure (16%)...
October 4, 2016: Journal of Critical Care
Mesut Mutluoglu, Gunalp Uzun, Michael Bennett, Peter Germonpré, David Smart, Daniel Mathieu
Diabetic foot ulcers (DFUs) are one of the most common indications for hyperbaric oxygen treatment (HBOT). The role of HBOT in DFUs is often debated. Recent evidence based guidelines, while recommending its use, urge further studies to identify the patient subgroups most likely to benefit from HBOT. A recent study in Diabetes Care aimed to assess the efficacy of HBOT in reducing the need for major amputation and improving wound healing in patients with chronic DFUs. In this study, patients with Wagner grade 2-4 diabetic foot lesions were randomly assigned to have HBOT (30 sessions/90 min/244 kPa) or sham treatment (30 sessions/90 min/air/125 kPa)...
September 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
Daniel J Firl, Koji Hashimoto, Colin O'Rourke, Teresa Diago-Uso, Masato Fujiki, Federico N Aucejo, Cristiano Quintini, Dympna M Kelly, Charles M Miller, John J Fung, Bijan Eghtesad
Donation after circulatory death (DCD)donors show heterogeneous hemodynamic trajectories following withdrawal of life support. Impact of hemodynamics in DCD liver transplant isunclear and objective measures of graft viability would ease transplant surgeon decision making and inform safe expansion of the donor organ pool. This retrospective study tested whether hemodynamic trajectories associated withtransplant outcomes in DCD liver transplantation (n = 87). Using longitudinal clustering statistical techniques we phenotyped DCD donors based on hemodynamic trajectory for both mean arterial pressure (MAP) and peripheral oxygen saturation (SpO2 ) following withdrawal of life support...
September 6, 2016: Liver Transplantation
Saeed Dastgiri, Roya Dolatkhah
BACKGROUND: Sickle cell disease is an inherited autosomal recessive blood condition and is one of the most prevalent genetic blood diseases worldwide. Acute chest syndrome is a frequent complication of sickle cell disease, as well as a major cause of morbidity and the greatest single cause of mortality in children with sickle cell disease. Standard treatment may include intravenous hydration, oxygen as treatment for hypoxia, antibiotics to treat the infectious cause and blood transfusions may be given...
August 30, 2016: Cochrane Database of Systematic Reviews
Caroline E Fife, Kristen A Eckert, Marissa J Carter
BACKGROUND: Among advanced therapeutic interventions for wounds, hyperbaric oxygen therapy (HBOT) has the unique ability to ameliorate tissue hypoxia, reduce pathologic inflammation, and mitigate ischemia reperfusion injury. Most of the conditions for which it is utilized have few successful alternative treatments, and the morbidity and mortality associated with treatment failure are significant. Data on the efficacy and effectiveness of HBOT were reviewed, comparative effectiveness research of HBOT was explained, and a new paradigm for the appropriate use of HBOT was described...
September 2016: Plastic and Reconstructive Surgery
Peter Vaupel, Arnulf Mayer
Tumor hypoxia is a hallmark of solid malignant tumor growth, profoundly influences malignant progression and contributes to the development of therapeutic resistance. Pathogenesis of tumor hypoxia is multifactorial, with contributions from both acute and chronic factors. Spatial distribution of hypoxia within tumors is markedly heterogeneous and often changes over time, e.g., during a course of radiotherapy. Substantial changes in the oxygenation status can occur within the distance of a few cell layers, explaining the inability of currently used molecular imaging techniques to adequately assess this crucial trait...
2016: Advances in Experimental Medicine and Biology
Ingo Ludolph, Andreas Arkudas, Marweh Schmitz, Anja M Boos, Christian D Taeger, Ulrich Rother, Raymund E Horch, Justus P Beier
The aim of this prospective study was to assess the correlation of flap perfusion analysis based on laser-assisted Indocyanine Green (ICG) angiography with combined laser Doppler spectrophotometry in autologous breast reconstruction using free DIEP/ms-TRAM flaps. Between February 2014 and July 2015, 35 free DIEP/ms-TRAM flaps were included in this study. Besides the clinical evaluation of flaps, intraoperative perfusion dynamics were assessed by means of laser-assisted ICG angiography and post-capillary oxygen saturation and relative haemoglobin content (rHb) using combined laser Doppler spectrophotometry...
October 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Taraneh Rezaee, Kamran Hassani
Abortion of the fetus due to a disease has been dramatically increased in the last decades. There is a still lack of knowledge on the various types of diseases which lead fetus to a vulnerable circumstance. The transport of oxygenated blood from the placenta to the human fetus has been an important clinical feature in Doppler velocimetry studies, especially the Ductus Venosus (DV). The DV connects intra-abdominal portion of the umbilical vein and the Inferior Vena Cava (IVC) at the inlet of the right atrium and is, therefore, important when examining the fetus state of health...
August 10, 2016: Bioscience Reports
Ruža Grizelj, Katarina Bojanić, Ena Pritišanac, Tomislav Luetić, Jurica Vuković, Toby N Weingarten, Darrell R Schroeder, Juraj Sprung
BACKGROUND: The extent of lung hypoplasia in neonates with congenital diaphragmatic hernia (CDH) can be assessed from gas exchange. We examined the role of preductal capillary blood gases in prognosticating outcome in patients with CDH. METHODS: We retrospectively reviewed demographic data, disease characteristics, and preductal capillary blood gases on admission and within 24 h following admission for 44 high-risk outborn neonates. All neonates were intubated after delivery due to acute respiratory distress, and were emergently transferred via ground ambulance to our unit between 1/2000 and 12/2014...
July 29, 2016: BMC Pediatrics
Yu-Ting Cheng, Meng-Yu Wu, Yu-Sheng Chang, Chung-Chi Huang, Pyng-Jing Lin
Despite gaining popularity, venovenous extracorporeal membrane oxygenation (VV-ECMO) remains a controversial therapy for acute respiratory failure (ARF) in adult patients due to its equivocal survival benefits. The study was aimed at identifying the preinterventional prognostic predictors of hospital mortality in adult VV-ECMO patients and developing a practical mortality prediction score to facilitate clinical decision-making.This retrospective study included 116 adult patients who received VV-ECMO for severe ARF in a tertiary referral center, from 2007 to 2015...
July 2016: Medicine (Baltimore)
Pietro Ghezzi, Vincent Jaquet, Fabrizio Marcucci, Harald H H W Schmidt
The theory stating that oxidative stress (OS) is at the root of several diseases is extremely popular. However, so far, no antioxidant is recommended or offered by healthcare systems neither approved as therapy by regulatory agencies that base their decisions on evidence-based medicine (EBM). This is simply because, so far, despite many preclinical and clinical studies indicating a beneficial effect of antioxidants in many disease conditions, randomised clinical trials have failed to provide the evidence of efficacy required for drug approval...
July 18, 2016: British Journal of Pharmacology
Jonathan Lai, Niamh C Nowlan, Ravi Vaidyanathan, Caroline J Shaw, Christoph C Lees
The key determinant to a fetus maintaining its health is through adequate perfusion and oxygen transfer mediated by the functioning placenta. When this equilibrium is distorted, a number of physiological changes, including reduced fetal growth, occur to favor survival. Technologies have been developed to monitor these changes with a view to prolong intrauterine maturity while reducing the risks of stillbirth. Many of these strategies involve complex interpretation, for example Doppler ultrasound for fetal blood flow and computerized analysis of fetal heart rate changes...
September 2016: Acta Obstetricia et Gynecologica Scandinavica
James M Walston, Daniel Cabrera, Shawna D Bellew, Marc N Olive, Christine M Lohse, M Fernanda Bellolio
INTRODUCTION: Rapid-response teams (RRTs) are interdisciplinary groups created to rapidly assess and treat patients with unexpected clinical deterioration marked by decline in vital signs. Traditionally emergency department (ED) disposition is partially based on the patients' vital signs (VS) at the time of hospital admission. We aimed to identify which patients will have RRT activation within 12 hours of admission based on their ED VS, and if their outcomes differed. METHODS: We conducted a case-control study of patients presenting from January 2009 to December 2012 to a tertiary ED who subsequently had RRT activations within 12 hours of admission (early RRT activations)...
May 2016: Western Journal of Emergency Medicine
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June 2016: Annals of Intensive Care
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