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https://www.readbyqxmd.com/read/29331977/clinical-outcomes-and-prognostic-factors-in-patients-with-spinal-dural-arteriovenous-fistulas-a-prospective-cohort-study-in-two-chinese-centres
#1
Yongjie Ma, Sichang Chen, Chao Peng, Chunxiu Wang, Guilin Li, Chuan He, Ming Ye, Tao Hong, Lisong Bian, Jiang Liu, Zhichao Wang, Adnan I Qureshi, Feng Ling, Hongqi Zhang
BACKGROUND: The short-term outcomes and prognostic factors of patients with spinal dural arteriovenous fistulas (SDAVFs) have not been defined in large cohorts. OBJECTIVE: To define the short-term clinical outcomes and prognostic factors in patients with SDAVFs. METHODS: A prospective cohort of 112 patients with SDAVFs were included consecutively in this study. The patients were serially evaluated with the modified Aminoff and Logue's Scale (mALS) one day before surgery and at 3 months, 6 months and 12 months after treatment...
January 13, 2018: BMJ Open
https://www.readbyqxmd.com/read/29330274/cerebrofacial-arteriovenous-metameric-syndrome-with-hypopituitarism-a-rare-association
#2
Justin Christopher Ng, Chinthaka Appuhamy, Wickly Lee
Case of cerebrofacial arteriovenous metameric syndrome (CAMS) in a 9-year-old boy is described with arteriovenous malformation simultaneously involving the brain and face, with characteristic CAMS type 1 and 2 involvement. This patient demonstrates the wide spectrum of clinical manifestations of CAMS, and in this particular case, the patient exhibits features of hypopituitarism-an association that was not previously described in the literature to our knowledge. Awareness of the underlying embryological abnormality and recognition of resultant clinical and radiological presentations are paramount for diagnosis and treatment...
January 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29328001/gamma-knife-radiosurgery-of-saccular-aneurysms-in-a-rabbit-model
#3
Mark D Meadowcroft, Timothy K Cooper, Sebastian Rupprecht, Thaddeus C Wright, Elizabeth E Neely, Michele Ferenci, Weimin Kang, Qing X Yang, Robert E Harbaugh, James R Connor, James McInerney
OBJECTIVE Intracranial aneurysms are vascular abnormalities associated with neurological morbidity and mortality due to risk of rupture. In addition, many aneurysm treatments have associated risk profiles that can preclude the prophylactic treatment of asymptomatic lesions. Gamma Knife radiosurgery (GKRS) is a standard treatment for trigeminal neuralgia, tumors, and arteriovenous malformations. Aneurysms associated with arteriovenous malformations have been noted to resolve after treatment of the malformation...
January 12, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29327142/quality-of-life-and-disability-12-months-after-surgery-vs-conservative-management-for-unruptured-brain-arteriovenous-malformations-scottish-population-based-and-australian-hospital-based-studies
#4
Joan Margaret O'Donnell, Rustam Al-Shahi Salman, Maurizio Manuguerra, Nazih Assaad, Michael Kerin Morgan
BACKGROUND: Few data are available on disability and quality of life (QOL) after surgery versus conservative management for unruptured brain arteriovenous malformations (uAVMs). OBJECTIVE: The aim of this study was to test the hypothesis that QOL and disability are worse after surgery ± preoperative embolisation for uAVM compared with conservative management. METHODS: We included consecutive patients diagnosed with uAVM from a prospective population-based study in Scotland (1999-2003; 2006-2010) and a prospective hospital-based series in Australia (2011-2015)...
January 11, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29326113/acute-heart-failure-with-new-onset-continuous-murmur-in-a-26-year-old-man
#5
Yi-Chen Wang, Chen-Wei Huang, Ting-Wei Lin
CLINICAL INTRODUCTION: A 26-year-old man with an unremarkable medical history sensed a momentary retrosternal 'pop' followed by overwhelming dyspnoea, without reporting any prodromal symptoms. At the emergency department, he had a significant tachycardia (170 bpm) and an extreme low diastolic blood pressure (<30 mm Hg). A loud, harsh and continuous murmur could be maximally auscultated at the right lower sternal border. ECG revealed global ST depression with ST elevation in lead aVR...
January 11, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29322721/mandibular-av-malformation-a-rare-cause-of-massive-bleeding-from-mouth-managed-with-multiple-vessel-embolization
#6
Rajeev Bhardwaj, Rajesh Sharma
An arteriovenous malformation (AVM) is a site of abnormal connectivity between arteries and veins. Arteriovenous malformations of jaw are extremely rare conditions that can result in disastrous complications, if handled carelessly. Although various treatment modalities have been advocated in the literature, there seems to be no complete consensus on a suitable treatment in these cases. We describe a case of mandibular AVM, who presented with massive bleeding from mouth and each time, embolization of one vessel was done, it recruited new vessel...
November 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29320704/extracellular-vesicles-provide-a-means-for-tissue-crosstalk-during-exercise
#7
Martin Whitham, Benjamin L Parker, Martin Friedrichsen, Janne R Hingst, Marit Hjorth, William E Hughes, Casey L Egan, Lena Cron, Kevin I Watt, Rhiannon P Kuchel, Navind Jayasooriah, Emma Estevez, Tim Petzold, Catherine M Suter, Paul Gregorevic, Bente Kiens, Erik A Richter, David E James, Jørgen F P Wojtaszewski, Mark A Febbraio
Exercise stimulates the release of molecules into the circulation, supporting the concept that inter-tissue signaling proteins are important mediators of adaptations to exercise. Recognizing that many circulating proteins are packaged in extracellular vesicles (EVs), we employed quantitative proteomic techniques to characterize the exercise-induced secretion of EV-contained proteins. Following a 1-hr bout of cycling exercise in healthy humans, we observed an increase in the circulation of over 300 proteins, with a notable enrichment of several classes of proteins that compose exosomes and small vesicles...
January 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29316552/arteriovenous-sphingosine-1-phosphate-differences-across-selected-organs-of-the-rat
#8
Monika Książek, Urszula Baranowska, Adrian Chabowski, Marcin Baranowski
BACKGROUND/AIMS: Sphingosine-1-phosphate (S1P) is a bioactive lysosphingolipid that is found in high concentration in plasma. The majority of plasma S1P is transported bound to HDL and albumin. Although the major sources of circulating S1P have been identified, it remains obscure what is the contribution of different organs/tissues to S1P homeostasis in plasma. Answering this question was the major aim of the present study. METHODS: The experiment was performed on male Wistar rats from whom blood samples were taken from either: 1) femoral vein, right ventricle of the heart, and abdominal aorta (n=15) or 2) hepatic vein, portal vein, and abdominal aorta (n=11)...
December 22, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29314372/reduction-in-anastomotic-flow-disturbance-within-a-modified-end-to-side-arteriovenous-fistula-configuration-results-of-a-computational-flow-dynamic-model
#9
John Carroll, Ramon L Varcoe, Tracie Barber, Anne Simmons
BACKGROUND/AIMS: We sought to determine if a modification to the peri-anastomotic vein configuration during end-to-side arteriovenous fistula (AVF) creation would achieve a favorable hemodynamic environment compared with the standard acute-angle AVF. METHODS: Computational fluid dynamics (CFD) modelling of two end-to-side AVF geometries (smooth-vein-loop vs acute-angle) allowed for hemodynamic modelling. Hemodynamic fields at various stages of the pulse cycle were observed and compared across both models...
January 5, 2018: Nephrology
https://www.readbyqxmd.com/read/29313900/dermoscopy-of-arteriovenous-tumour-a-morphological-study-of-39-cases
#10
Pedro Zaballos, Carolina Medina, Luis J Del Pozo, Ignacio Gómez-Martín, José Bañuls
BACKGROUND/OBJECTIVES: Arteriovenous tumour is a distinct, benign, acquired vascular lesion that can be misdiagnosed. METHODS: A dermoscopic examination of 39 cases of arteriovenous tumours collected from four Spanish hospitals was performed to evaluate specific dermoscopic criteria and patterns. RESULTS: The most common structures found were vascular, 95% of cases (37/39); 90% (35/39) were non-arborising telangiectasia. All the lesions except two (95%) had a homogeneous pigmentation background that was red in 30 cases (77%), bluish-red in three (8%), brown in two (5%) and blue or multicoloured in one case each...
January 5, 2018: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/29313587/hereditary-haemorrhagic-telangiectasia-with-severe-anemia-and-recurrent-cns-infections
#11
Nrushen Peesapati, Pbpr Naidu, S Sunitha, P V Sivaram
Hereditary Haemorrhagic Telangiectasia, also known as Osler-Rendu-Weber disease is a rare autosomal dominant disorder affecting small vessels of multiple systems whose main pathological change is the presence of abnormal arteriovenous communications. Usually presents as skin and mucosal telangiectasias, epistaxis, gastrointestinal bleeding and visceral arteriovenous malformations. Although the epistaxis and gastrointestinal blood loss can result in anaemia, patients with hereditary haemorrhagic telangiectasia rarely presents as severe anaemia1 or CNS infections...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29313269/patient-specific-modeling-of-hemodynamics-supporting-surgical-planning-in-a-fontan-circulation-correction
#12
Theodorus M J van Bakel, Kevin D Lau, Jennifer Hirsch-Romano, Santi Trimarchi, Adam L Dorfman, C Alberto Figueroa
Computational fluid dynamics (CFD) is a modeling technique that enables calculation of the behavior of fluid flows in complex geometries. In cardiovascular medicine, CFD methods are being used to calculate patient-specific hemodynamics for a variety of applications, such as disease research, noninvasive diagnostics, medical device evaluation, and surgical planning. This paper provides a concise overview of the methods to perform patient-specific computational analyses using clinical data, followed by a case study where CFD-supported surgical planning is presented in a patient with Fontan circulation complicated by unilateral pulmonary arteriovenous malformations...
January 8, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29313113/epidemiology-and-contemporary-management-of-abdominal-aortic-aneurysms
#13
Brant W Ullery, Richard L Hallett, Dominik Fleischmann
Abdominal aortic aneurysm (AAA) is most commonly defined as a maximal diameter of the abdominal aorta in excess of 3 cm in either anterior-posterior or transverse planes or, alternatively, as a focal dilation ≥ 1.5 times the diameter of the normal adjacent arterial segment. Risk factors for the development of AAA include age > 60, tobacco use, male gender, Caucasian race, and family history of AAA. Aneurysm growth and rupture risk appear to be associated with persistent tobacco use, female gender, and chronic pulmonary disease...
January 9, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29310345/inferior-mesenteric-arteriovenous-fistula-with-nonpulsatile-abdominal-mass-a-case-report-and-a-mini-review
#14
Ling Cheng, Ruifeng Zhao, Di Guo, Kailin Cai, Kaifang Zou, Jun Yang, Liangru Zhu
RATIONALE: Inferior mesenteric arteriovenous fistula (IMAVF) is a rare condition principally characterized by portal hypertension and ischemic bowel disease. Up to now, only 30 cases have been reported. Presented here is an IMAVF patient with nonpulsatile abdominal mass as the main manifestation. PATIENT CONCERNS: A 62-year-old Chinese male who complained of abdominal discomfort for a month was admitted to our hospital. Physical examination revealed a hard and hardly mobile mass...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29309979/microsurgical-and-endovascular-treatments-of-spinal-extradural-arteriovenous-fistulas-with-or-without-intradural-venous-drainage
#15
Keisuke Takai, Masaaki Shojima, Hideaki Imai, Nobuhito Saito, Makoto Taniguchi
BACKGROUND: Limited information is available on spinal extradural arteriovenous fistulas (AVFs). OBJECTIVE: To present treatment strategies in relation to the angioarchitecture. METHODS: Fourteen patients treated at 2 hospitals were retrospectively analyzed. RESULTS: Fourteen AVFs included 4 cervical, 1 thoracic, and 9 lumbosacral lesions. Three key angiographic features were observed: 1) the feeding artery, 2) an enlarged extradural venous plexus, and 3) intradural retrograde venous drainage...
January 5, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29309977/usefulness-and-stability-of-intraoperative-digital-subtraction-angiography-using-the-trans-radial-route-in-arteriovenous-malformation-surgery
#16
Won Ki Yoon, Hoon Kim, Young Woo Kim, Seong Rim Kim, Ik Seong Park
OBJECTIVE: Digital subtraction angiography (DSA) is the gold standard to confirm complete removal of an AVM nidus. However, the trans-femoral approach requires specialized instrumentation and is cumbersome and difficult to perform with the patient in the prone or decubitus position. The authors report the use of intraoperative DSA (iDSA) with the trans-radial approach and examine its usefulness and safety. MATERIAL AND METHODS: We retrospectively reviewed clinical features, radiologic images, surgical findings, and iDSA findings of AVM patients who underwent nidus removal surgery...
January 5, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29309660/intracranial-dural-arteriovenous-fistula-2-dimensional-operative-video
#17
Helbert de Oliveira Manduca Palmiero, Bruno Augusto Lourenço Costa, Ricardo Lourenço Caramanti, Marcos Devanir Silva da Costa, Feres Eduardo Aparecido Chaddad-Neto
No abstract text is available yet for this article.
December 22, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29309635/letter-radiation-induced-changes-after-stereotactic-radiosurgery-for-brain-arteriovenous-malformations
#18
Zengpanpan Ye, Xiaolin Ai, Chao You
No abstract text is available yet for this article.
December 22, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29307757/surgical-and-endovascular-intervention-for-dialysis-access-maturation-failure-during-and-after-arteriovenous-fistula-surgery-review-of-the-evidence
#19
REVIEW
Jan H M Tordoir, Niek Zonnebeld, Magda M van Loon, Maurizio Gallieni, Markus Hollenbeck
BACKGROUND: Maturation failure is the major obstacle to establishing functional arteriovenous fistulae (AVF) for haemodialysis treatment. Various endovascular and surgical techniques have been advocated to enhance fistula maturation and to increase the number of functional AVFs. This narrative review considers the available evidence of interventional techniques for treatment of AVF non-maturation. RESULTS: Intra-operative vein dilation and anastomosis modification results in a clinical maturation rate of 74-92% and a 6 month cumulative AVF patency of 79-93%...
January 4, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29307022/fluorescein-videoangiography-during-extracranial-to-intracranial-bypass-surgery-preliminary-results
#20
Alessandro Narducci, Julia Onken, Marcus Czabanka, Nils Hecht, Peter Vajkoczy
BACKGROUND: Over the last years, intraoperative use of fluorescein is gaining ground in the field of neurosurgery, due to development of a microscope-integrated YELLOW 560 module, with reported experiences in brain malignancies, aneurysms, and arteriovenous malformation surgery. The aim of this study is to determine the feasibility and value of fluorescein videoangiography during bypass procedures. METHODS: The authors enrolled 11 patients who underwent extracranial-to-intracranial bypass for moyamoya disease, atherosclerotic steno-occlusive cerebrovascular disease, and flow replacement during a giant middle cerebral artery (MCA) aneurysm treatment...
January 6, 2018: Acta Neurochirurgica
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