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Arterial venous malformation

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https://www.readbyqxmd.com/read/29780232/cerebral-arteriovenous-malformations-in-the-era-of-embolization-for-angiographic-cure-a-single-center-experience-in-egypt
#1
Mohamed K Elewa
Background: Embolization for cerebral arteriovenous malformations (AVMs) has evolved in the last decade with evolution in both equipment and material. Embolization targets have expanded to include angiographic cure. Methods: To discuss the technical and management outcomes of our first cerebral AVM case series treated with embolization. The clinical, angiographic, treatment, and outcome variables of consecutive cerebral arteriovenous malformation cases, treated with curative embolization, between January 2011 and June 2017 in one regional center, were retrospectively analyzed...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29777889/endovascular-management-of-a-ruptured-basilar-perforator-artery-aneurysm-associated-with-a-pontine-arteriovenous-malformation-a-case-report-and-review-of-the-literature
#2
Joseph Lockwood, Tyler Scullen, Mansour Mathkour, Ascher Kaufmann, Ricky Medel, Aaron S Dumont, Peter S Amenta
BACKGROUND: Arteriovenous malformation (AVM)-associated aneurysms are common, being reported in 15% of cases. In regards to ruptured posterior fossa AVMs, associated aneurysms are present in 48% of cases and are the etiology of the bleed in 37%. We present a 75 year-old female who presented with a subarachnoid hemorrhage (SAH) secondary to a ruptured aneurysm arising from a flow-related basilar perforator artery feeder of an anterior pontine AVM. We report the successful treatment of the aneurysm with coil embolization...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29772322/free-omental-flap-for-tissue-defect-coverage-after-resection-of-complicated-venous-malformation-in-the-area-of-the-knee
#3
Nicla Settembre, Mario D'Oria, Lucie DekerlE, Charbel Saba, Zakariyae Bouziane, Serguei Malikov
Venous malformations are the most common slow-flow vascular malformations; they are not prone to volume decrease over time and invasive treatment is usually required. There are two main techniques to address the definitive therapy of these lesions: sclerotherapy and surgical excision, each with its own advantages and disadvantages. We report the case of a 56 year-old man who came to our attention with persistent pain after multiple unsuccessful attempts to treat a large venous malformation located in the area of the right knee...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29769130/diagnostic-accuracy-of-low-dose-dual-source-cardiac-computed-tomography-as-compared-to-surgery-in-univentricular-heart-patients
#4
Narumol Chaosuwannakit, Pattarapong Makarawate
BACKGROUND: To evaluate the ability of low radiation dose dual-source computed tomography (DSCT) to depict the features of morphological univentricular heart and to define accuracy by comparing findings with surgery. METHODS: Low radiation dose dual-source cardiac computed tomography (CCT) of 33 cases of functional univentricular heart preliminary diagnosis by echocardiography compared with the results of surgery were retrospectively analyzed (aged 1 day to 4 years, median 5 months)...
May 16, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29753079/curative-transvenous-embolization-for-ruptured-brain-arteriovenous-malformations-a-single-center-experience-from-china
#5
Yingkun He, Weixing Bai, Tianxiao Li, Ferdinand K Hui, Yanyan He, Bin Xu
OBJECTIVE: To evaluate the feasibility and safety of transvenous embolization treatment for brain arteriovenous malformations (bAVM). METHODS: Between November 2016 and August 2017, a transvenous endovascular embolization protocol was implemented at the Henan Provincial People's Hospital for consecutive patients with ruptured bAVM. Therapeutic decision making was based on Spetzler-Martin grades, bAVM location, pattern of venous drainage, and angioarchitecture. And the transvenous embolization procedure was combined with transarterial support...
May 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29747435/the-use-of-transarterial-approaches-in-peripheral-arteriovenous-malformations-avms
#6
REVIEW
Aditya Khurana, Patrick T Hangge, Hassan Albadawi, M-Grace Knuttinen, Sadeer J Alzubaidi, Sailendra G Naidu, J Scott Kriegshauser, Rahmi Oklu, Brian W Chong
Arteriovenous malformations (AVMs) are a subset of congenital vascular malformations (CVMs). They comprise abnormal connections between arterial and venous circulation; treatment approaches are dependent on the angioarchitecture of the AVM, specifically the number and arrangement of the feeder arteries and outflow veins. Various imaging modalities can be used to diagnose and plan treatment. Here we will review the use of transarterial approaches to treat AVMs.
May 9, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29705020/imaging-of-hemifacial-spasm
#7
M Hermier
Almost all primary hemifacial spasms are associated with one or more neurovascular conflicts, most often at the root exit zone in the immediate vicinity of the brainstem. Imaging has first to exclude a secondary hemifacial spasm and secondly to search for and characterize the responsible neurovascular conflict(s). Magnetic resonance imaging should include high-resolution anatomical hyper T2-weighted sequences and magnetic resonance angiography by using 1.5 or even better 3 Tesla magnets. The most frequent vascular compressions are from the anterior-inferior cerebellar artery, the posterior-inferior cerebellar artery and the vertebrobasilar artery; venous conflicts are very rare...
April 25, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29660051/resection-of-right-frontal-arteriovenous-malformation-3-dimensional-operative-video
#8
William T Couldwell
The video demonstrates resection of a Grade II Spetzler-Martin unruptured, medium-sized arteriovenous malformation (AVM). A young woman presented with headaches and seizures. The right frontal lesion measured 4.5 cm in largest dimension and had superficial venous drainage. Partial Onyx embolization, primarily of the anterior cerebral feeding arteries, was performed. Bone removal for exposure allowed identification of indentation from the large superficial draining vein. The video demonstrates careful microsurgical dissection on the AVM/brain interface, with selective interruption of feeding arteries circumferentially...
April 11, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29622371/a-reanalysis-of-predictors-for-the-risk-of-hemorrhage-in-brain-arteriovenous-malformation
#9
Zheng Huang, Kang Peng, Changqing Chen, Feiyue Zeng, Junyu Wang, Fenghua Chen
BACKGROUND: Brain arteriovenous malformation (BAVM) is a congenital cerebral vascular disease that characterized with intracranial hemorrhage and epilepsy. It has some risk in current treatments including microsurgery, endovascular, and radiation therapy. Some patients with bAVMs may keep unruptured in their whole life. Whether it should be treated depends on the evaluation of the hemorrhage risk of bAVM. Although previous studies gave many significant predictors, we tried to find some new and more significant predictors in 173 patients with bAVMS by retrospective analysis...
April 2, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29611866/gamma-knife-radiosurgery-for-arteriovenous-malformations-general-principles-and-preliminary-results-in-a-swiss-cohort
#10
Matthieu Raboud, Constantin Tuleasca, Philippe Maeder, Luis Schiappacasse, Maud Marguet, Roy Thomas Daniel, Marc Levivier
INTRODUCTION: Arteriovenous malformations (AVMs) are a type of vascular malformation characterised by an abnormal connection between arteries and veins, bypassing the capillary system. This absence of capillaries generates an elevated pressure (hyperdebit), in both the AVM and the venous drainage, increasing the risk of rupture. Management modalities are: observation, microsurgical clipping, endovascular treatment and radiosurgery. The former can be used alone or in the frame of a multidisciplinary approach...
April 3, 2018: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29590729/determination-of-predictive-anatomic-parameters-for-bleeding-of-brain-arteriovenous-malformations-by-multidetector-ct-angiography
#11
Biljana Milatović, Goran Tasić, Igor Nikolić, Igor Đorić, Nikola Repac, Vuk Šćepanović, Aleksandar Janićijević, Krešimir Rotim, Lukas Rasulić
Patients with brain arteriovenous malformation (AVM) have a certain risk to bleed, and the goal of this study was to examine the effect of radiological and clinical predictive characteristics of AVM hemorrhage using multidetector computed tomographic (MDCT) angiography. The study included a series of 57 patients, mean age 35.46 years, who were diagnosed during their hospitalization at Clinical Department of Neurosurgery, Clinical Center of Serbia, in the period from January 2008 to March 2016. In all patients, the diagnosis was made using MDCT angiography...
December 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29570476/patent-foramen-ovale-and-hypoxemia
#12
Mohammad K Mojadidi, Juan C Ruiz, Jason Chertoff, Muhammad O Zaman, Islam Y Elgendy, Ahmed N Mahmoud, Mohammad Al-Ani, Akram Y Elgendy, Nimesh K Patel, Ghanshyam Shantha, Jonathan M Tobis, Bernhard Meier
Patent foramen ovale (PFO), an embryonic remnant of the fetal circulation, is present in 20-25% of adults. While recent observational studies and clinical trials have established the link between PFO-mediated right-to-left shunting with cryptogenic stroke and migraine with aura, the role of a PFO in exacerbating hypoxemic medical conditions (i.e., sleep apnea, chronic obstructive pulmonary disease, pulmonary hypertension, platypnea-orthodeoxia, pulmonary arteriovenous malformation, high altitude pulmonary edema, and exercise desaturation) remains poorly evaluated...
March 22, 2018: Cardiology in Review
https://www.readbyqxmd.com/read/29531794/role-of-ct-angiography-in-bilateral-pulmonary-sequestration-a-case-report
#13
Rizwana Yasmin, Dorte R Stærk, Anna Kalhauge, Henrik J Hansen, Tina E Olsen, Lisa L Maroun
Bilateral pulmonary sequestration (PS) is a very rare congenital malformation. We describe a case of bilateral intralobar pulmonary sequestration (ILS) in a newborn. Both sequestrations received arterial supply from separate branches of the descending aorta and venous drainage was into ipsilateral inferior pulmonary veins. Prenatal ultrasonography showed cystic changes in the lungs. Computed tomography angiography (CTA) with supplemental two-dimensional (2D) and three-dimensional (3D) images was performed to clearly define the pathology and revealed bilateral intralobar pulmonary sequestration with aberrant blood supply...
March 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29506860/-anesthesia-for-cesarean-delivery-in-a-patient-with-klippel-trenaunay-syndrome
#14
Clara Elisa Frare de Avelar Teixeira, Angélica de Fátima de Assunção Braga, Franklin Sarmento da Silva Braga, Vanessa Henriques Carvalho, Rafael Miranda da Costa, Giselle Ioná Teixeira Brighenti
INTRODUCTION: Klippel-Trenaunay syndrome is a rare congenital vascular disease characterized by cutaneous hemangiomas, varicosities, and limb asymmetry, which may evolve with coagulation disorders and hemorrhage as more frequent complications in pregnant patients. Pregnancy is not advised in women with this syndrome due to increased obstetric risk. CASE REPORT: Female patient, 29 years old, 99kg, 167cm, BMI 35.4kg.m-2 , physical status ASA III, with 27 weeks of gestational age and diagnosis of Klippel-Trenaunay syndrome...
March 2, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29498037/prenatal-diagnosis-of-persistent-right-umbilical-vein-incidence-and-clinical-impact-a-prospective-study
#15
Arkadiusz Krzyżanowski, Dariusz Swatowski, Tomasz Gęca, Maciej Kwiatek, Aleksandra Stupak, Sławomir Woźniak, Anna Kwaśniewska
BACKGROUND: Persistent right umbilical vein (PRUV) is usually an isolated finding but it may be accompanied by other fetal malformations. AIMS: We aimed to determine the incidence of prenatally diagnosed PRUV in a referral population, assess the neonatal outcome and discuss the findings together with those from previous publications. MATERIALS AND METHODS: A total of 2360 women with low-risk singleton pregnancies were examined in the second and third trimesters...
March 2, 2018: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/29473997/extracellular-bone-morphogenetic-protein-modulator-bmper-and-twisted-gastrulation-homolog-1-preserve-arterial-venous-specification-in-zebrafish-blood-vessel-development-and-regulate-notch-signaling-in-endothelial-cells
#16
Jennifer Susanne Esser, Rahel Elisabeth Steiner, Meike Deckler, Hannah Schmitt, Bianca Engert, Sandra Link, Anne Charlet, Cam Patterson, Christoph Bode, Qian Zhou, Martin Moser
The bone morphogenetic protein (BMP) signaling pathway plays a central role during vasculature development. Mutations or dysregulation of the BMP pathway members have been linked to arteriovenous malformations. In the present study, we investigated the effect of the BMP modulators bone morphogenetic protein endothelial precursor-derived regulator (BMPER) and twisted gastrulation protein homolog 1 (TWSG1) on arteriovenous specification during zebrafish development and analyzed downstream Notch signaling pathway in human endothelial cells...
April 2018: FEBS Journal
https://www.readbyqxmd.com/read/29462373/the-role-of-matrix-metalloproteinase-3-in-the-doxycycline-attenuation-of-intracranial-venous-hypertension-induced-angiogenesis
#17
Xiang Zou, Zehan Wu, Jun Huang, Peixi Liu, Xuanfeng Qin, Liang Chen, Wei Zhu, Yao Zhao, Peiliang Li, Jianping Song, Guo-Yuan Yang, Ying Mao
BACKGROUND: The molecular mechanism of brain arteriovenous malformation (BAVM) is largely unknown. Intracranial venous hypertension (VH) may enhance focal angiogenesis and promote BAVM development and progression. A rat VH model effectively simulates the hemodynamic microenvironment of this disease. OBJECTIVE: To explore the effect of doxycycline in VH-related angiogenesis, as well as the role of matrix metalloproteinase-3 (MMP-3) and other molecular factors. METHODS: A rat VH model was generated by common carotid artery and distal external jugular vein anastomosis...
February 16, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29417325/preoperative-right-sided-cardiac-congestion-is-associated-with-gastrointestinal-bleeding-in-patients-with-continuous-flow-left-ventricular-assist-devices
#18
Yutaka Tomizawa, Akiko Tanaka, Hiroto Kitahara, Atsushi Sakuraba, Nir Uriel, Valluvan Jeevanandam, Takeyoshi Ota
BACKGROUND: Large scale data on preoperative risk stratification for gastrointestinal bleeding (GIB) following continuous-flow left ventricular assist device (CF-LVAD) implantation are scarce. AIMS: To identify independent predictors for GIB following CF-LVAD implantation. METHODS: We conducted a retrospective cohort study of consecutive 243 patients who underwent CF-LVAD implantation (HeartMateII) from January 2009 to March 2015 at the University of Chicago Medical Center...
February 8, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29410371/trans-venous-embolization-of-a-basal-ganglia-ruptured-arteriovenous-malformation-with-open-surgical-arterial-control-a-hybrid-technique
#19
Zsolt Kulcsár, Paolo Machi, Karl Schaller, Karl Olof Lovblad, Philippe Bijlenga
Treatment of ruptured deep-seated arteriovenous malformations is challenging and associated with elevated risks. This is due to the proximity or involvement of critical brain structures and the specifically fine and delicate angioarchitecture of these lesions, making both endovascular and surgical access technically complicated. We present the advantages of a true combined, open surgical and endovascular transvenous approach in a hybrid operating room. The technique may overcome in part the difficulties and may improve safety and risk related concerns...
February 2, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29408495/multimodality-management-of-vein-of-galen-malformations-an-institutional-experience
#20
Arthur Hosmann, Ahmed El-Garci, Brigitte Gatterbauer, Gerhard Bavinzski, Engelbert Knosp, Andreas Gruber
BACKGROUND: The vein of Galen aneurysmal malformation (VGM) is a rare intracranial arteriovenous fistula with a dramatic manifestation during infancy and 100% mortality without treatment. Therapeutic strategies for VGMs have changed over time as a result of advances in endovascular techniques. We present our experience and multimodality approach within the last 4 decades. METHODS: A retrospective analysis and angiographic review were performed of patients with VGM between 1975 and 2016 at our institution...
April 2018: World Neurosurgery
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