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https://www.readbyqxmd.com/read/28102284/the-2-4-billion-plan-to-steal-a-rock-from-mars
#1
Alexandra Witze
No abstract text is available yet for this article.
January 18, 2017: Nature
https://www.readbyqxmd.com/read/28100981/isolated-left-subclavian-artery-complete-atrioventricular-block-and-tricuspid-atresia-in-a-neonate
#2
Kanupriya Chaturvedi, Deepa Prasad, Ravi Ashwath, James P Strainic, Christopher S Snyder
Isolated left subclavian artery is one of the rarer aortic arch anomalies. It has been associated with other congenital heart diseases, typically tetralogy of Fallot, double-outlet right ventricle, and atrial and ventricular septal defects. Its significant clinical implications include a left-to-right shunt from the vertebrobasilar system, which causes pulmonary overcirculation and subclavian steal. We present an unusual case of a premature infant who was diagnosed prenatally with congenital complete atrioventricular block and tricuspid atresia and was found to have an isolated left subclavian artery postnatally...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28046816/su-f-p-24-radiological-disperse-device
#3
R Alam
PURPOSE: We are now living in a society of constant fear of terrorism. This topic is pertaining to give a general knowledge of what is a radiological dispersion device or RDD and in case of its detonation, what are the options open to public for a safe action in terms of reducing the exposure and knowing the proper steps. These RDD are also called dirty bombs. METHODS: Compared to nuclear weapons, dirty bombs are easy to make. In order for a terrorist organization to construct and detonate a dirty bomb, it must acquire radioactive material by stealing it or buying it through legal or illegal channels...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28042558/long-term-outcomes-of-arteriovenous-grafts-for-hemodialysis-in-lower-extremities
#4
Seok Han, Dan Song, Sangchul Yun
PURPOSE: The lower extremity has received its fair share of attention as a vascular access site in patients who have exhausted their upper arm vessels. However, experiences with lower extremity arteriovenous grafts (AVGs) have so far been disappointing because of high infection rates and severe limb ischemia. We report our experience with hemodialysis access from the lower extremity. MATERIALS AND METHODS: A retrospective review of 60 lower extremity AVGs created between January 2003 and December 2011 was performed...
December 2016: Vascular Specialist International
https://www.readbyqxmd.com/read/28031805/in-the-absence-of-a-landscape-of-fear-how-lions-hyenas-and-cheetahs-coexist
#5
Alexandra Swanson, Todd Arnold, Margaret Kosmala, James Forester, Craig Packer
Aggression by top predators can create a "landscape of fear" in which subordinate predators restrict their activity to low-risk areas or times of day. At large spatial or temporal scales, this can result in the costly loss of access to resources. However, fine-scale reactive avoidance may minimize the risk of aggressive encounters for subordinate predators while maintaining access to resources, thereby providing a mechanism for coexistence. We investigated fine-scale spatiotemporal avoidance in a guild of African predators characterized by intense interference competition...
December 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28031649/non-st-elevation-myocardial-infarction-triggered-by-subclavian-steal-syndrome
#6
Bulent Uzunlar, Ahmet Karabulut, Zeki Dogan
Coronary-subclavian artery (SCA) steal syndrome is an uncommon phenomenon in which coronary flow is diverted into the SCA through the patent left internal mammary artery (LIMA) conduit due to critical subclavian stenosis. The prevalence of significant left SCA (LSCA) stenosis in patients, referred for coronary bypass surgery, has been reported to be 0.2 to 6.8%. Most patients usually present with angina pectoris, and secondary myocardial infarction is rarely reported. Herein, we present a case of coronary bypass graft in which a left anterior descending artery-LIMA graft was applied to supply the left arm due to complete LSCA occlusion...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031406/complications-of-the-arteriovenous-fistula-a-systematic-review
#7
Ahmed A Al-Jaishi, Aiden R Liu, Charmaine E Lok, Joyce C Zhang, Louise M Moist
The implementation of patient-centered care requires an individualized approach to hemodialysis vascular access, on the basis of each patient's unique balance of risks and benefits. This systematic review aimed to summarize current literature on fistula risks, including rates of complications, to assist with patient-centered decision making. We searched Medline from 2000 to 2014 for English-language studies with prospectively captured data on ≥100 fistulas. We assessed study quality and extracted data on study design, patient characteristics, and outcomes...
December 28, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28018697/self-limited-kleptomania-symptoms-as-a-side-effect-of-duloxetine
#8
Christopher W T Miller, Keith E Gallagher
Introduction. Impulse control disorders (ICDs) have been described as a side effect of dopamine agonists, frequently used in neurodegenerative conditions affecting the nigrostriatal pathway. Serotonin-norepinephrine reuptake inhibitors (e.g., duloxetine) have dose-dependent differential affinity for monoaminergic transporters, inhibiting the dopamine transporter at higher doses, thus increasing availability of synaptic dopamine, with the potential for similar impulse control side effects. Case Presentation...
2016: Case Reports in Psychiatry
https://www.readbyqxmd.com/read/27974985/anomalous-origin-of-the-left-common-carotid-artery-from-the-main-pulmonary-artery-a-rare-association-in-an-infant-with-charge-syndrome
#9
Onyekachukwu Osakwe, Blaise Jones, Russel Hirsch
Case Report. Isolated carotid artery originating from the pulmonary trunk is an exceedingly rare anomalous origin of head and neck vessels. We present this finding, along with a persistent embryonic trigeminal artery, in a male infant with multiple cardiac defects and other congenital anomalies associated with CHARGE syndrome. After extensive investigations, cardiac catheterization revealed the anomalous left common carotid artery arising from the cranial aspect of the main pulmonary artery. There was retrograde flow in this vessel, resulting from the lower pulmonary pressure, essentially stealing arterial supply from the left anterior cerebral circulation...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27964855/a-case-of-brachiocephalic-fistula-steal-and-the-emergency-physician-s-approach-to-hemodialysis-arteriovenous-fistula-complications
#10
Erica Simon, Brit Long, Kyle Johnston, Shane Summers
BACKGROUND: Chronic kidney disease is common in the United States, with many patients maintained on hemodialysis (HD). The process of HD requires vascular access through an arteriovenous (AV) fistula, AV graft, or central venous catheter. Today, as a result of the National Kidney Foundation's "Fistula First" initiative, nearly 55% of HD patients utilize an AV fistula. As there is significant morbidity and mortality associated with fistula placement and recurrent fistula cannulation, emergency physicians must be equipped to recognize and treat fistula complications...
December 10, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27939753/a-head-to-head-comparison-between-ct-and-ivus-derived-coronary-blood-flow-models
#11
C A Bulant, P J Blanco, G D Maso Talou, C Guedes Bezerra, P A Lemos, R A Feijóo
The goal of this work is to compare coronary hemodynamics as predicted by computational blood flow models derived from two imaging modalities: coronary computed tomography angiography (CCTA) and intravascular ultrasound integrated with angiography (IVUS). Criteria to define boundary conditions are proposed to overcome the dissimilar anatomical definition delivered by both modalities. The strategy to define boundary conditions is novel in the present context, and naturally accounts for the flow redistribution induced by the resistance of coronary vessels...
January 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27935843/siderophores-more-than-stealing-iron
#12
Judith Behnsen, Manuela Raffatellu
Siderophores are small molecular iron chelators that are produced by microbes and whose most notable function is to sequester iron from the host and provide this essential metal nutrient to microbes. Recent studies have proposed additional, noncanonical roles for siderophores, including the acquisition of noniron metals and modulation of host functions. Recently, Holden et al. (V. I. Holden, P. Breen, S. Houle, C. M. Dozois, and M. A. Bachman, mBio 7:e01397-16, 2016, http://dx.doi.org/10.1128/mBio.01397-16) showed that siderophores secreted by Klebsiella pneumoniae during lung infection induce stabilization of the transcription factor HIF-1α, increase the expression of proinflammatory cytokines in the lung, and promote dissemination of K...
November 15, 2016: MBio
https://www.readbyqxmd.com/read/27873224/therapeutic-potential-of-transdermal-glyceryl-trinitrate-in-the-management-of-acute-stroke
#13
Jason P Appleton, Nikola Sprigg, Philip M Bath
The nitric oxide donor, glyceryl trinitrate (GTN), is a candidate treatment for the management of acute stroke with haemodynamic and potential reperfusion and neuroprotective effects. When administered as a transdermal patch during the acute and subacute phases after stroke, GTN was safe, lowered blood pressure, maintained cerebral blood flow, and did not induce cerebral steal or alter functional outcome. However, when given within 6 h of stroke onset, GTN reduced death and dependency (odds ratio 0.52; 95% confidence interval 0...
November 21, 2016: CNS Drugs
https://www.readbyqxmd.com/read/27856450/is-more-area-level-crime-associated-with-more-sitting-and-less-physical-activity-longitudinal-evidence-from-37-162-australians
#14
Thomas Astell-Burt, Xiaoqi Feng, Gregory S Kolt, Bin Jalaludin
Does a rise in crime result in increased sitting time and a reduction in physical activity? We used unobserved ("fixed")-effects models to examine associations between change in objectively measured crime (nondomestic violence, malicious damage, breaking and entering, and stealing, theft, and robbery) in Australia and measures of sitting time, walking, and moderate-to-vigorous physical activity (MVPA) in a residentially stable sample of 17,474 men and 19,688 women at baseline (2006-2008) and follow-up (2009-2010)...
December 15, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27855212/microsporidia-why-make-nucleotides-if-you-can-steal-them
#15
REVIEW
Paul Dean, Robert P Hirt, T Martin Embley
Microsporidia are strict obligate intracellular parasites that infect a wide range of eukaryotes including humans and economically important fish and insects. Surviving and flourishing inside another eukaryotic cell is a very specialised lifestyle that requires evolutionary innovation. Genome sequence analyses show that microsporidia have lost most of the genes needed for making primary metabolites, such as amino acids and nucleotides, and also that they have only a limited capacity for making adenosine triphosphate (ATP)...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27835916/neuropsychological-performance-after-brain-arteriovenous-malformations-treatment
#16
Ondrej Bradac, Alice Pulkrabkova, Patricia de Lacy, Vladimir Benes
Background The treatment of brain arteriovenous malformations (AVMs) has been studied extensively. With the use of the Spetzler-Martin (S-M) grading system, patients can be informed appropriately about their possible surgical risks. This does not hold true for their neuropsychological sequelae, which have not been studied widely. We evaluated the neuropsychological outcome of our patients treated for brain AVMs. Methods Of 113 patients treated for a brain AVM between 2001 and 2009, 66 patients were enrolled in the study...
November 11, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/27824958/the-value-of-exercise-spet-for-the-detection-of-coronary-artery-steal-syndrome-secondary-to-unligated-major-side-branch-of-left-internal-mammary-artery
#17
Osman Beton, Hakki Kaya, Ozan Kandemir, Buket Alibazoglu, Haluk Alibazoglu, Ercan Karabey, Okan Onur Turgut, Mehmet Birhan Yilmaz
OBJECTIVE: The clinical significance of unligated major left internal mammary artery (LIMA)-side branches (SB) remains controversial in patients with previous coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the clinical significance of unligated major LIMA-SB by using exercise myocardial perfusion imaging (MPI) with single-photon emission tomography. SUBJECTS AND METHODS: We conducted a retrospective analysis of 2819 consecutive patients who underwent diagnostic angiography...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27801662/coronary-fistula-and-myocardial-ischemia-what-is-the-relationship
#18
Ashish H Shah, Robert J Cusimano, Maral Ouzounian
Coronary artery fistula is a rare anomaly; large fistulae may result in myocardial ischemia from coronary steal. We present the case of a 73-year-old male who presented with exertional angina; imaging demonstrated severe coronary artery disease and a large coronary artery fistula. Ligation of the fistula resulted in severe right ventricular failure and cardiogenic shock. After reestablishing flow to the fistula, the patient recovered. We speculate that the ischemia-induced angiogenesis from the congenitally present fistula made what may have otherwise been an innocent fistula into an important nutritive supply, which remained important despite distal revascularization...
November 2016: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/27799374/where-did-the-clot-go-an-unusual-complication-of-mechanical-thrombectomy-caused-by-malignancy-related-subclavian-steal-phenomenon-in-a-patient-with-acute-basilar-artery-occlusion
#19
Nikkie Randhawa, Jonathan P Squires, Manraj Kanwal Singh Heran, Sharanpal K Mann
Subclavian steal is a relatively common vascular phenomenon usually caused by atherosclerotic disease. While symptoms are rare, arm claudication of the ipsilateral limb is most common, with paroxysmal symptoms of vertebrobasilar insufficiency (often exercise induced) being relatively uncommon. Here we present a case of brachial artery embolism during mechanical thrombectomy for basilar artery thrombosis, secondary to subclavian steal phenomenon. This atypical and potentially irreversible complication should be considered in patients with acute ischemic stroke undergoing neurointerventional management when subclavian steal is discovered angiographically...
October 31, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27797875/where-did-the-clot-go-an-unusual-complication-of-mechanical-thrombectomy-caused-by-malignancy-related-subclavian-steal-phenomenon-in-a-patient-with-acute-basilar-artery-occlusion
#20
Nikkie Randhawa, Jonathan P Squires, Manraj Kanwal Singh Heran, Sharanpal K Mann
Subclavian steal is a relatively common vascular phenomenon usually caused by atherosclerotic disease. While symptoms are rare, arm claudication of the ipsilateral limb is most common, with paroxysmal symptoms of vertebrobasilar insufficiency (often exercise induced) being relatively uncommon. Here we present a case of brachial artery embolism during mechanical thrombectomy for basilar artery thrombosis, secondary to subclavian steal phenomenon. This atypical and potentially irreversible complication should be considered in patients with acute ischemic stroke undergoing neurointerventional management when subclavian steal is discovered angiographically...
October 25, 2016: BMJ Case Reports
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