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Hemorrhage and thrombosis

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https://www.readbyqxmd.com/read/29156596/microvesicle-involvement-in-shiga-toxin-associated-infection
#1
REVIEW
Annie Villysson, Ashmita Tontanahal, Diana Karpman
Shiga toxin is the main virulence factor of enterohemorrhagic Escherichia coli, a non-invasive pathogen that releases virulence factors in the intestine, causing hemorrhagic colitis and, in severe cases, hemolytic uremic syndrome (HUS). HUS manifests with acute renal failure, hemolytic anemia and thrombocytopenia. Shiga toxin induces endothelial cell damage leading to platelet deposition in thrombi within the microvasculature and the development of thrombotic microangiopathy, mostly affecting the kidney. Red blood cells are destroyed in the occlusive capillary lesions...
November 19, 2017: Toxins
https://www.readbyqxmd.com/read/29147590/paroxysmal-nocturnal-hemoglobinuria-in-pregnancy-a-dilemma-in-treatment-and-thromboprophylaxis
#2
Arpan Patel, Athira Unnikrishnan, Martina Murphy, Robert Egerman, Sarah Wheeler, Ashley Richards, John Wingard
Paroxysmal nocturnal hemoglobinuria (PNH) is a hematologic disorder characterized by an acquired somatic mutation in the phosphatidylinositol glycan class A gene which leads to a higher risk for increased venous and arterial thrombosis. Current treatment for PNH includes eculizumab. Pregnant patients who have PNH have higher risk for thrombosis and hemorrhage with both pregnancy and their underlying PNH. Treatment frequently poses conundrum. The safety and efficacy of eculizumab during pregnancy and breast feeding have not been extensively studied and contraception has been recommended due to potential for teratogenicity...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/29146874/imaging-characteristics-of-venous-parenchymal-abnormalities
#3
Audrey Arnoux, Aude Triquenot-Bagan, Daniela Andriuta, David Wallon, Evelyne Guegan-Massardier, Claire Leclercq, Olivier Martinaud, Mélody Castier-Amouyel, Olivier Godefroy, Jean-Marc Bugnicourt
BACKGROUND AND PURPOSE: There are few published data on the patterns of parenchymal imaging abnormalities in a context of cerebral venous thrombosis (CVT). The objectives of the present study were to describe the patterns of parenchymal lesions associated with CVT and to determine the lesion sites. METHODS: We included 44 consecutively hospitalized patients with CVT and parenchymal lesions on magnetic resonance imaging. The diagnosis of CVT had been confirmed by magnetic resonance imaging/magnetic resonance venography...
November 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29146750/trpm7-transient-receptor-potential-melastatin-like-7-channel-kinase-controls-calcium-responses-in-arterial-thrombosis-and-stroke-in-mice
#4
Sanjeev K Gotru, Wenchun Chen, Peter Kraft, Isabelle C Becker, Karen Wolf, Simon Stritt, Susanna Zierler, Heike M Hermanns, Deviyani Rao, Anne-Laure Perraud, Carsten Schmitz, René P Zahedi, Peter J Noy, Michael G Tomlinson, Thomas Dandekar, Masayuki Matsushita, Vladimir Chubanov, Thomas Gudermann, Guido Stoll, Bernhard Nieswandt, Attila Braun
OBJECTIVE: TRPM7 (transient receptor potential melastatin-like 7 channel) is a ubiquitously expressed bifunctional protein comprising a transient receptor potential channel segment linked to a cytosolic α-type serine/threonine protein kinase domain. TRPM7 forms a constitutively active Mg(2+) and Ca(2+) permeable channel, which regulates diverse cellular processes in both healthy and diseased conditions, but the physiological role of TRPM7 kinase remains largely unknown. APPROACH AND RESULTS: Here we show that point mutation in TRPM7 kinase domain deleting the kinase activity in mice (Trpm7(R/R) ) causes a marked signaling defect in platelets...
November 16, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29145299/prophylactic-temporary-abdominal-aorta-balloon-occlusion-in-women-with-placenta-previa-accretism-during-late-gestation
#5
Zhongyuan Qiu, Jifen Hu, Jianbo Wu, Lihong Chen
BACKGROUND: To evaluate the clinical efficacy of prophylactic temporary balloon occlusion of the abdominal aorta in patients with placenta previa accretism during cesarean section. METHODS: Twenty-three consecutive patients, prenatally confirmed with placenta previa accretism were retrospectively analyzed in our center from August 2012 to October 2014. All 23 subjects underwent cesarean section with prophylactic balloon occlusion of the abdominal aorta. RESULTS: All of the 23 subjects experienced singleton pregnancies leading to the birth of live infants...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145107/postoperative-thoracic-hemorrhage-after-right-upper-lobectomy-with-thoracic-wall-resection-during-rivaroxaban-anticoagulant-therapy-for-deep-leg-vein-thrombosis-a-case-report
#6
Taiji Kuwata, Masatoshi Kanayama, Ayako Hirai, Shuichi Shinohara, Masaru Takenaka, Soichi Oka, Yasuhiro Chikaishi, Naoko Imanishi, Koji Kuroda, Fumihiro Tanaka
INTRODUCTION: Postoperative pulmonary embolism (PE) is the one of the most important complications after thoracic surgery. This complicatin after the surgery is often treated by new anticoaglant drug, such as rivaroxaban, which dose not need to the monitoring of blood coaglation system. We experienced postoperative bleeding case during anticoaglant therapy using rivaroxaban. PRESENTATION OF CASE: The patient underwent a right upper lobectomy with lung and chest wall resection for lung cancer...
November 11, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29143222/quantitative-analysis-of-the-level-of-readability-of-online-emergency-radiology-based-patient-education-resources
#7
David R Hansberry, Michael D'Angelo, Michael D White, Arpan V Prabhu, Mougnyan Cox, Nitin Agarwal, Sandeep Deshmukh
PURPOSE: The vast amount of information found on the internet, combined with its accessibility, makes it a widely utilized resource for Americans to find information pertaining to medical information. The field of radiology is no exception. In this paper, we assess the readability level of websites pertaining specifically to emergency radiology. METHODS: Using Google, 23 terms were searched, and the top 10 results were recorded. Each link was evaluated for its readability level using a set of ten reputable readability scales...
November 15, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/29128928/serum-neuron-specific-enolase-may-be-a-marker-to-predict-the-severity-and-outcome-of-cerebral-venous-thrombosis
#8
Yanyu Hu, Ran Meng, Xuxiang Zhang, Linlin Guo, Sijie Li, Yan Wu, Jiangang Duan, Yuchuan Ding, Xunming Ji
The objective is to explore the effective of baseline serum neuron specific enolase (NSE) on predicting the severity and outcome in patients with cerebral venous thrombosis (CVT). A total of 156 patients confirmed as CVT in Xuanwu Hospital were enrolled in this retrospective study from March 2011 through September 2016. The severity was evaluated with the National Institutes of Health Stroke Score (NIHSS), intracranial pressure (ICP), and CVT-related complications; the outcome was evaluated by modified Rankin Scale (mRS); the relationship between baseline serum NSE and mRS was analyzed with receiver operating characteristic curve (ROC), logistic regression analysis, and Kaplan-Meier curves...
November 11, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29127268/sickle-mice-are-sensitive-to-hypoxia-ischemia-induced-stroke-but-respond-to-tissue-type-plasminogen-activator-treatment
#9
Yu-Yo Sun, Jolly Lee, Henry Huang, Mary B Wagner, Clinton H Joiner, David R Archer, Chia-Yi Kuan
BACKGROUND AND PURPOSE: The effects of lytic stroke therapy in patients with sickle cell anemia are unknown, although a recent study suggested that coexistent sickle cell anemia does not increase the risk of cerebral hemorrhage. This finding calls for systemic analysis of the effects of thrombolytic stroke therapy, first in humanized sickle mice, and then in patients. There is also a need for additional predictive markers of sickle cell anemia-associated vasculopathy. METHODS: We used Doppler ultrasound to examine the carotid artery of Townes sickle mice tested their responses to repetitive mild hypoxia-ischemia- and transient hypoxia-ischemia-induced stroke at 3 or 6 months of age, respectively...
November 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29125410/hemorrhage-associated-with-ventriculoperitoneal-shunt-placement-in-aneurysmal-subarachnoid-hemorrhage-patients-on-a-regimen-of-dual-antiplatelet-therapy-a-retrospective-analysis
#10
Joseph S Hudson, Yasunori Nagahama, Daichi Nakagawa, Robert M Starke, Brian J Dlouhy, James C Torner, Pascal Jabbour, Lauren Allan, Colin P Derdeyn, Jeremy D W Greenlee, David Hasan
OBJECTIVE Intracranial stenting and flow diversion require the use of dual antiplatelet therapy (DAPT) to prevent in-stent thrombosis. DAPT may significantly increase the risk of hemorrhagic complications in patients who require subsequent surgical interventions. In this study, the authors sought to investigate whether DAPT is a risk factor for hemorrhagic complications associated with ventriculoperitoneal (VP) shunt placement in patients with aneurysmal subarachnoid hemorrhage (aSAH). Moreover, the authors sought to compare VP shunt complication rates with respect to the shunt's location from the initial external ventricular drain (EVD) site...
November 10, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29119878/the-technique-of-superselective-ophthalmic-artery-chemotherapy-for-retinoblastoma-the-garrahan-hospital-experience
#11
Flavio Requejo, Juan Marelli, Agustin Ruiz Johnson, Claudia Sampor, Guillermo Chantada
Background Superselective ophthalmic artery chemotherapy (SOAC) is a proven therapy for the treatment of retinoblastomas. We describe the technique, results and complications of SOAC performed in our hospital. Objective The aim of this article is to demonstrate that a seemingly complex technique can be carried out with a low morbidity rate. Methods A retrospective analysis of patients receiving SOAC in our department from November 2014 to April 2017 was performed. Data collected were age, gender, number of procedures, arteries approached, bilaterality of treatment, and complications...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29118492/association-of-ocular-findings-and-outcome-in-cerebral-venous-thrombosis
#12
Samira Yadegari, Alireza Keshtkar Jafari, Elham Ashrafi
BACKGROUND: Cerebral venous thrombosis (CVT) is a potentially life-threatening underdiagnosed disease. Headache is a common but nonspecific finding in CVT. Other features such as ocular finding can assist to correct diagnosis, but their frequency in CVT has not been previously evaluated. The aim of this study is to evaluate the ocular symptoms and signs in CVT and their association with outcome. METHODS: The demographic, clinical, laboratory, radiological, and outcome data were collected and analyzed from patients referred to a tertiary hospital during 6 years...
September 2017: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/29116545/intravenous-thrombolysis-in-sle-related-stroke-a-case-report-and-literature-review
#13
Xiaodong Chen, Gelin Xu
Patients with systemic lupus erythematosus (SLE) bear an increased risk of ischemic stroke. However, evidences for treating acute stroke due to artery thrombosis in SLE patients are extremely limited. A 45-year-old woman experienced sudden left hemiplegia. She was transported to the emergency department of our hospital 2 hours after the initial symptom. According to the medical records, the patient was diagnosed with SLE at the age of 28. CT scanned 150 min after the initial symptom showed no evidence of acute changes or hemorrhage...
November 7, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29114315/intracranial-hypotension-associated-cerebral-swelling-following-cranioplasty-report-of-two-cases
#14
Masashi Nomura, Takahiro Ota, Mitsugu Ishizawa, Shinsuke Yoshida, Takayuki Hara
Cranioplasty is a comparatively simple neurosurgical procedure, and fatal complications are rare. This report describes two cases of critical brain swelling after otherwise uneventful cranioplasty. Both cases had subarachnoid hemorrhage and extremely similar clinical courses. They underwent decompressive craniotomy and clipping in the acute phase and had cranioplasty in the chronic phase, resulting in serious cerebral swelling and death. Deep venous sinus thrombosis was revealed in the autopsy for one case...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29109695/the-role-of-thromboinflammation-in-delayed-cerebral-ischemia-after-subarachnoid-hemorrhage
#15
REVIEW
Devin W McBride, Spiros L Blackburn, Kumar T Peeyush, Kanako Matsumura, John H Zhang
Delayed cerebral ischemia (DCI) is a major determinant of patient outcome following aneurysmal subarachnoid hemorrhage. Although the exact mechanisms leading to DCI are not fully known, inflammation, cerebral vasospasm, and microthrombi may all function together to mediate the onset of DCI. Indeed, inflammation is tightly linked with activation of coagulation and microthrombi formation. Thromboinflammation is the intersection at which inflammation and thrombosis regulate one another in a feedforward manner, potentiating the formation of thrombi and pro-inflammatory signaling...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29107075/the-role-of-extracellular-histones-in-influenza-virus-pathogenesis
#16
Harshini K Ashar, Nathan C Mueller, Jennifer M Rudd, Timothy A Snider, Mallika Achanta, Maram Prasanthi, Sivasami Pulavendran, Paul G Thomas, Ramachandran Akhilesh, Jerry R Malayer, Jerry W Ritchey, Rachakatla Rajasekhar, Vincent Tk Chow, Charles T Esmon, Narasaraju Teluguakula
Although exaggerated host immune responses have been implicated in influenza-induced lung pathogenesis, the etiologic factors that contribute to these events are not completely understood. We previously demonstrated that neutrophil extracellular traps exacerbate pulmonary injury during influenza pneumonia. Histones are the major protein components of neutrophil extracellular traps and are known to have cytotoxic effects. Here, we examined the role of extracellular histones in lung pathogenesis during influenza...
October 26, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29103887/thrombosis-after-aortic-balloon-occlusion-during-cesarean-delivery-for-abnormally-invasive-placenta
#17
F Luo, Z Wu, J Mei, J Yue, X Yu, L Xie
BACKGROUND: Abnormally invasive placenta is a major cause of postpartum hemorrhage and cesarean hysterectomy. An increasing number of obstetricians worldwide employ prophylactic aortic balloon occlusion to manage bleeding during cesarean delivery in these patients. However, the safety of this procedure in pregnant women has not been confirmed. METHODS: The clinical records of patients who were suspected of having abnormally invasive placenta and who received prophylactic aortic balloon catheterization before cesarean delivery were retrospectively studied for thrombotic complications...
September 22, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/29102390/comorbidities-clinical-features-and-prognostic-implications-of-cancer-patients-with-cerebrovascular-disease
#18
Bernardo Cacho-Díaz, Nydia A Lorenzana-Mendoza, Héctor Spínola-Maroño, Gervith Reyes-Soto, Carlos Cantú-Brito
PURPOSE: The objective of this study was to identify and describe the comorbidities, clinical features, and prognostic implications of cancer patients with cerebrovascular disease. MATERIALS AND METHODS: All patients with cerebrovascular disease (CVD) seen in the neuro-oncology unit at a cancer referral center from April 2010 to November 2016 were included; demographic, oncologic diagnosis, risk factors, and prognostic considerations were presented as well. RESULTS: We report on 256 patients with CVD and cancer, of whom 66% were women...
October 25, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29100021/factors-associated-with-mortality-within-24h-of-liver-transplantation-an-updated-analysis-of-65-308-adult-liver-transplant-recipients-between-2002-and-2013
#19
Kyota Fukazawa, Ernesto A Pretto, Seigo Nishida, Jorge D Reyes, Edward Gologorsky
STUDY OBJECTIVES: Intracardiac and pulmonary thromboembolism (ICPTE), its risk factors and contribution to 24-hour mortality after adult liver transplantation for end-stage liver disease. DESIGN: Retrospective analysis of Standard Transplant Analysis and Research electronic database files. SETTING: Perioperative. PATIENTS: Electronic files of 65,308 adult liver transplant recipients between 2002 and 2013 obtained from Organ Procurement and Transplantation Network...
October 31, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29099537/use-of-peripherally-inserted-central-venous-catheters-piccs-in-children-receiving-autologous-or-allogeneic-stem-cell-transplantation
#20
Stefano Benvenuti, Rosanna Ceresoli, Giovanni Boroni, Filippo Parolini, Fulvio Porta, Daniele Alberti
INTRODUCTION: The aim of our study was to present our experience with the use of peripherally inserted central catheters (PICCs) in pediatric patients receiving autologous or allogenic blood stem-cell transplantation. The insertion of the device in older children does not require general anesthesia and does not require a surgical procedure. METHODS: From January 2014 to January 2017, 13 PICCs were inserted as a central venous device in 11 pediatric patients submitted to 14 autologous or allogeneic stem-cell transplantation, at the Bone Marrow Transplant Unit of the Children's Hospital of Brescia...
October 31, 2017: Journal of Vascular Access
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