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Stanford type A

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https://www.readbyqxmd.com/read/28081189/global-gene-expression-analysis-of-cross-protected-phenotype-of-pectobacterium-atrosepticum
#1
Vladimir Gorshkov, Stanford Kwenda, Olga Petrova, Elena Osipova, Yuri Gogolev, Lucy N Moleleki
The ability to adapt to adverse conditions permits many bacterial species to be virtually ubiquitous and survive in a variety of ecological niches. This ability is of particular importance for many plant pathogenic bacteria that should be able to exist, except for their host plants, in different environments e.g. soil, water, insect-vectors etc. Under some of these conditions, bacteria encounter absence of nutrients and persist, acquiring new properties related to resistance to a variety of stress factors (cross-protection)...
2017: PloS One
https://www.readbyqxmd.com/read/28070203/a-pilot-observational-study-on-magnesium-and-calcium-imbalance-in-elderly-patients-with-acute-aortic-dissection
#2
E Vianello, E Dozio, A Barassi, G Sammarco, L Tacchini, M M Marrocco-Trischitta, S Trimarchi, M M Corsi Romanelli
BACKGROUND: Magnesium (Mg) and calcium (Ca) are the principal essential elements involved in endothelial cell homeostasis. Extracellular changes in the levels of either alter endothelial contraction and dilatation. Consequently Mg and Ca imbalance is associated with a high risk of endothelial dysfunction, the main process observed during acute aortic dissection (AAD); in this clinical condition, which mainly affects elderly men, smooth muscle cell alterations lead to intimal tears, creating a false new lumen in the media of the aorta...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28061369/employing-image-processing-techniques-for-cancer-detection-using-microarray-images
#3
Nastaran Dehghan Khalilabad, Hamid Hassanpour
Microarray technology is a powerful genomic tool for simultaneously studying and analyzing the behavior of thousands of genes. The analysis of images obtained from this technology plays a critical role in the detection and treatment of diseases. The aim of the current study is to develop an automated system for analyzing data from microarray images in order to detect cancerous cases. The proposed system consists of three main phases, namely image processing, data mining, and the detection of the disease. The image processing phase performs operations such as refining image rotation, gridding (locating genes) and extracting raw data from images the data mining includes normalizing the extracted data and selecting the more effective genes...
December 21, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28047235/su-f-t-340-direct-editing-of-dose-volume-histograms-algorithms-and-a-unified-convex-formulation-for-treatment-planning-with-dose-constraints
#4
B Ungun, A Fu, S Boyd, L Xing
PURPOSE: To develop a procedure for including dose constraints in convex programming-based approaches to treatment planning, and to support dynamic modification of such constraints during planning. METHODS: We present a mathematical approach that allows mean dose, maximum dose, minimum dose and dose volume (i.e., percentile) constraints to be appended to any convex formulation of an inverse planning problem. The first three constraint types are convex and readily incorporated...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28004213/the-impact-of-postgraduate-health-technology-innovation-training-outcomes-of-the-stanford-biodesign-fellowship
#5
James Wall, Eva Hellman, Lyn Denend, Douglas Rait, Ross Venook, Linda Lucian, Dan Azagury, Paul G Yock, Todd J Brinton
Stanford Biodesign launched its Innovation Fellowship in 2001 as a first-of-its kind postgraduate training experience for teaching biomedical technology innovators a need-driven process for developing medical technologies and delivering them to patients. Since then, many design-oriented educational programs have been initiated, yet the impact of this type of training remains poorly understood. This study measures the career focus, leadership trajectory, and productivity of 114 Biodesign Innovation Fellowship alumni based on survey data and public career information...
December 21, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27976792/angiographic-detection-of-fatal-acute-aortic-dissection-stanford-type-a-under-resuscitation
#6
Jens Treptau, Jens Ebnet, Muharrem Akin, Jörn Tongers, Johann Bauersachs, Michael Brehm, L Christian Napp
No abstract text is available yet for this article.
2016: Cardiology Journal
https://www.readbyqxmd.com/read/27960216/dilatation-of-vascular-prostheses-in-ascending-aortic-position-a-long-term-follow-up-computed-tomography-study-with-comparison-of-different-measurement-methods
#7
Marwan Hamiko, Matthias Endlich, Christian Krämer, Chris Probst, Armin Welz, Kai Wilhelm, Wolfgang Schiller
Background The aim of this study was to evaluate long-term dilatation of Hemashield Gold and Hemashield Platinum vascular prostheses in ascending aortic position using different measurement methods to obtain precise results. Methods Between 1999 and 2007, 73 patients with Stanford type A dissection received ascending aortic replacement with Hemashield Gold and Hemashield Platinum prostheses. Measurements were performed using multiplanar reconstruction mode of electrocardiogram (ECG)-gated, multislice spiral computed tomography (MSCT) in strictly orthogonal cross-sectional planes...
December 13, 2016: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/27938584/-review-of-numerical-simulation-study-of-stanford-type-b-thoracic-aortic-dissection
#8
Y J Zeng, K Luo, J R Fan, T Zhu
According to the previous studies, some key indicators such as the hemodynamic parameters (pressure, flow rate, shear stress, etc.) as well as the geometry and the location of tear are closely related to the development of aortic dissection but are hard to measure in vivo. With the help of computational fluid dynamic method, a promising way is just shown to investigate the mechanisms and treatment of aortic dissection from the perspective of hemodynamics by constructing a three-dimensional model to simulate blood flow...
1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27932197/crucial-role-of-carotid-ultrasound-for-the-rapid-diagnosis-of-hyperacute-aortic-dissection-complicated-by-cerebral-infarction-a-case-report-and-literature-review
#9
Eglė Sukockienė, Kristina Laučkaitė, Antanas Jankauskas, Dalia Mickevičienė, Giedrė Jurkevičienė, Antanas Vaitkus, Edgaras Stankevičius, Kęstutis Petrikonis, Daiva Rastenytė
Aortic dissection is a life-threatening rare condition that may virtually present by any organ system dysfunction, the nervous system included. Acute cerebral infarction among multiple other neurological and non-neurological presentations is part of this acute aortic syndrome. Rapid and correct diagnosis is of extreme importance keeping in mind the possibility of thrombolytic treatment if a patient with a suspected ischemic stroke arrives to the Emergency Department within a 4.5-h window after symptom onset...
2016: Medicina
https://www.readbyqxmd.com/read/27923946/prevalence-of-antiretroviral-drug-resistance-in-patients-who-are-not-responding-to-protease-inhibitor-based-treatment-results-from-the-first-national-survey-in-south-africa
#10
K Steegen, M Bronze, M A Papathanasopoulos, G van Zyl, D Goedhals, C Van Vuuren, W Macleod, I Sanne, W S Stevens, S C Carmona
Limited data exist on human immunodeficiency virus type 1 (HIV-1) resistance in patients who are not responding to protease inhibitor (PI)-based regimens in resource-limited settings. This study assessed resistance profiles in adults across South Africa who were not responding to PI-based regimens. pol sequencing was undertaken and submitted to the Stanford HIV Drug Resistance Database. At least 1 major PI mutation was detected in 16.4% of 350 participants. A total of 53.4% showed intermediate resistance to darunavir/ritonavir, whereas high-level resistance was not observed...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27909279/-stanford-type-a-aortic-dissection-after-off-pump-coronary-artery-bypass-grafting-using-automated-proximal-anastomotic-device-report-of-a-case
#11
Toshiyuki Maeda, Taku Sakurada, Satoshi Muraki, Shinji Nakashima, Jun Sasaki, Eiji Araki
Operative mortality of Stanford type A aortic dissection( AAD) repair with previous cardiac surgery is high, especially with previous coronary artery bypass grafting. We report an extremely rare case of AAD related to the PAS-Port system. A 68-year-old male patient on dialysis was admitted to our hospital with a diagnosis of AAD. Half a year before he had undergone off-pump coronary artery bypass grafting using PAS-Port system for a proximal anastomosis of a vein graft. Urgent graft replacement of the ascending aorta was performed, and the proximal anastomotic site of the vein graft was attached to the prosthetic graft...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27909276/-closure-of-ascending-aortic-entry-by-debranching-endovascular-management-in-an-elderly-patient-with-acute-stanford-type-a-dissection
#12
Munehiro Saiki, Keiji Yunoki, Naoya Sakoda, Shigeru Hattori, Gaku Uchino, Takuya Kawabata, Yasufumi Fujita, Kunikazu Hisamochi, Hideo Yoshida
An 85-year-old woman was hospitalized by emergency for an acute Stanford type A aortic dissection. Computed tomography showed a primary entry on the ascending aorta and pericardial effusion. Although her hemodynamics was unstable due to cardiac shock, her family wished no open surgery considering her age and frailty. A couple of days later, her condition became stabilized with antihypertensive therapy. Since the dissection was limited within the ascending aorta, closure of the entry with the stentgraft was considered appropriate and much less invasive as compared with an open surgery...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27885195/evaluation-and-influence-of-brachiocephalic-branch-re-entry-in-patients-with-type-a-acute-aortic-dissection
#13
Shota Yasuda, Kiyotaka Imoto, Keiji Uchida, Norihisa Karube, Tomoyuki Minami, Motohiko Goda, Shinichi Suzuki, Munetaka Masuda
BACKGROUND: Stanford type A acute aortic dissection (A-AAD) extends to the brachiocephalic branches in some patients. After ascending aortic replacement, a remaining re-entry tear in the distal brachiocephalic branches may act as an entry and result in a patent false lumen in the aortic arch. However, the effect of brachiocephalic branch re-entry concomitant with A-AAD remains unknown.Methods and Results:Eighty-five patients with A-AAD who underwent ascending aortic replacement in which both preoperative and postoperative multiple-detector computed tomography (MDCT) scans could be evaluated were retrospectively studied...
December 22, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27882524/clinical-recognition-of-acute-aortic-dissections-insights-from-a%C3%A2-large-single-centre-cohort-study
#14
W W Jansen Klomp, G J Brandon Bravo Bruinsma, L M Peelen, A P Nierich, J G Grandjean, A W J van 't Hof
AIMS: Acute aortic dissection (AD) requires immediate treatment, but is a diagnostic challenge. We studied how often AD was missed initially, which patients were more likely to be missed and how this influenced patient management and outcomes. METHODS: A retrospective cohort study including 200 consecutive patients with AD as the final diagnosis, admitted to a tertiary hospital between 1998 and 2008. The first differential diagnosis was identified and patients with and without AD included were compared...
November 23, 2016: Netherlands Heart Journal
https://www.readbyqxmd.com/read/27867562/analysis-of-risk-factors-for-and-the-prognosis-of-postoperative-acute-respiratory-distress-syndrome-in-patients-with-stanford-type-a-aortic-dissection
#15
Mei-Fang Chen, Liang-Wan Chen, Hua Cao, Yong Lin
BACKGROUND: To explore the risk factors for and the prognosis of postoperative acute respiratory distress syndrome (ARDS) in patients with Stanford type A aortic dissection (AD). METHODS: This retrospective nested case-control study included 527 Stanford type A AD patients who were divided into ARDS groups and non-ARDS groups. The clinical features of the groups were examined. RESULTS: The fifty-nine patients in the ARDS group exhibited extended durations of cardiopulmonary bypass (CPB) (P=0...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27864636/do-early-postoperative-ct-findings-following-type-a-aortic-dissection-repair-predict-early-clinical-outcome
#16
Linda C Chu, Joel Price, Allen Young, Duke E Cameron, Elliot K Fishman
PURPOSE: The purposes of this study are to determine the prevalence of specific postoperative CT findings following Stanford type A aortic dissection repair in the early postoperative period and to determine if these postoperative findings are predictive of adverse clinical outcome. METHODS: Patients who underwent type A dissection repair between January 2012 and December 2014 were identified from our institutional cardiac surgery database. Postoperative CT exams within 1 month of surgery were retrospectively reviewed to determine sizes and attenuation of mediastinal, pericardial, and pleural fluid, and the presence or absence of pneumomediastinum, pneumothorax, or lung consolidation...
November 18, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27821943/green-tea-and-exercise-interventions-as-nondrug-remedies-in-geriatric-patients-with-rheumatoid-arthritis
#17
Ahmad H Alghadir, Sami A Gabr, Einas S Al-Eisa
This study aimed to evaluate the effects of green tea and supervised exercise training interventions on improvement of disease activity and bone metabolism markers in rheumatoid arthritis patients. [Subjects and Methods] One-hundred and twenty subjects who had a mean age of (60.7 ± 2.53 years) and had been diagnosed with rheumatoid arthritis at least ten years previously were randomly included in this study. Patients were treated with infliximab, green tea, or a supervised exercise program for six months...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27821831/-delayed-diagnosis-of-aortic-dissection-following-thrombolytic-therapy-in-a-patient-with-acute-ischemic-stroke-report-of-a-case
#18
Yosuke Miyamoto, Zenichi Masuda, Yasuhiro Kotani, Suguru Tarui, Yosuke Kuroko, Yasuhiro Fujii, Susumu Ozawa, Shunji Sano
Diagnosis of aortic dissection complicating cerebral ischemic stroke is difficult. A 60-year-old patient presented at an emergency department of a hospital with a sudden development of left-sided weakness, but without chest pain. During administration of recombinant tissue plasminogen activator with diagnosis of cerebral infarction, he developed symptomatic hypotension and was transferred to our hospital. His chest computed tomography revealed Stanford type A aortic dissection. Replacement of the ascending aorta and aortic arch was successfully performed on the 4th day...
November 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27810415/interventional-therapy-for-brain-arteriovenous-malformations-before-and-after-aruba
#19
Eric S Sussman, Aditya K Iyer, Mario Teo, Arjun V Pendharkar, Allen L Ho, Gary K Steinberg
The ARUBA trial (2014) concluded that medical management alone is superior to medical management plus interventional therapy for the treatment of unruptured brain arteriovenous malformations (bAVMs). This sparked considerable controversy among involved healthcare providers. Here, we evaluated the impact of ARUBA on the volume, type, and treatment modality of bAVMs referred to a large tertiary care center. This was achieved by conducting a retrospective review of a prospectively maintained database of all bAVMs treated at Stanford Health Care and Stanford Children's Health from January 2012 through July 2015...
October 31, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27806047/the-queenslandensis-and-the-type-form-of-the-dengue-fever-mosquito-aedes-aegypti-l-are-genomically-indistinguishable
#20
Gordana Rašić, Igor Filipović, Ashley G Callahan, Darren Stanford, Abigail Chan, Sai Gek Lam-Phua, Cheong Huat Tan, Ary Anthony Hoffmann
BACKGROUND: The mosquito Aedes aegypti (L.) is a major vector of viral diseases like dengue fever, Zika and chikungunya. Aedes aegypti exhibits high morphological and behavioral variation, some of which is thought to be of epidemiological significance. Globally distributed domestic Ae. aegypti have often been grouped into (i) the very pale variety queenslandensis and (ii) the type form. Because the two color forms co-occur across most of their range, there is interest in understanding how freely they interbreed...
November 2016: PLoS Neglected Tropical Diseases
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