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https://www.readbyqxmd.com/read/28214636/a-case-of-evolving-bilateral-sphenoidal-meningoencephalocoeles-case-report-and-review-of-literature
#1
Varun Aggarwal, Pankaj Shivhare, E R Jayadevan, Vinod Felix, Mathew Abraham, Suresh Nair, Prakash Nair
The evolution of sphenoid sinus meningoencephalocoeles and cerebrospinal fluid (CSF) rhinorrhoea is poorly understood. We present a case demonstrating the gradual evolution of encephalocoeles from both the lateral walls of a previously normal sphenoid sinus in a patient with dural arteriovenous fistula (DAVF), the CSF leak which developed following staged embolisation of the DAVF was managed by an endoscopic endonasal transpterygoid approach. Our findings suggest that over a period of time, chronic elevation of intracranial pressure (ICP) results in gradual erosion of the lateral wall of the sphenoid with development of meningoencephalocoeles and CSF leaks...
February 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28213895/safety-of-implantation-of-a-leadless-pacemaker-via-femoral-approach-in-the-presence-of-an-inferior-vena-cava-filter
#2
Muhammad R Afzal, Janice Ackers, John D Hummel, Ralph Augostini
A 61-year-old woman with symptomatic complete heart block was referred for permanent pacemaker. The presence of a left sided arteriovenous fistula and right sided mastectomy with lymph node dissection precluded the implantation of a trans-venous pacemaker and therefore, a leadless pacemaker was recommended. The patient also had an inferior vena cava (IVC) filter. The passage of a 27 French introducer sheath housing the leadless pacemaker through IVC filter was carefully visualized under fluoroscopy and advanced to the right ventricle without any compromise to the filter...
February 17, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28213819/conditional-knockout-of-activin-like-kinase-1-alk-1-leads-to-heart-failure-without-maladaptive-remodeling
#3
Kevin J Morine, Xiaoying Qiao, Vikram Paruchuri, Mark J Aronovitz, Emily E Mackey, Lyanne Buiten, Jonathan Levine, Keshan Ughreja, Prerna Nepali, Robert M Blanton, Richard H Karas, S Paul Oh, Navin K Kapur
Activin like kinase-1 (AlK-1) mediates signaling via the transforming growth factor beta (TGFβ) family of ligands. AlK-1 activity promotes endothelial proliferation and migration. Reduced AlK-1 activity is associated with arteriovenous malformations. No studies have examined the effect of global AlK-1 deletion on indices of cardiac remodeling. We hypothesized that reduced levels of AlK-1 promote maladaptive cardiac remodeling. To test this hypothesis, we employed AlK-1 conditional knockout mice (cKO) harboring the ROSA26-CreER knock-in allele, whereby a single dose of intraperitoneal tamoxifen triggered ubiquitous Cre recombinase-mediated excision of floxed AlK-1 alleles...
February 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28213195/blunt-traumatic-brain-injury-patients-a-role-for-ct-angiography-of-the-head-to-evaluate-non-traumatic-etiologies
#4
REVIEW
Ha Nguyen, Ninh Doan, Michael Gelsomino, Saman Shabani
BACKGROUND: In the setting of trauma, the etiology of intracranial hemorrhage (ICH) is frequently attributed to the physical, traumatic event. Caution should still be directed towards non-traumatic (or spontaneous) etiologies responsible for the trauma, such as hypertension, cerebral amyloid angiopathy, aneurysms, vascular malformation, and hemorrhagic infarcts. The role for immediate CT angiography (CTA) remains controversial to evaluate for non-traumatic etiologies. METHODS: A systematic review of the available literature in Medline PubMed database...
February 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28211004/point-of-care-ultrasound-and-doppler-ultrasound-evaluation-of-vascular-injuries-in-penetrating-and-blunt-trauma
#5
REVIEW
Miguel Angel Montorfano, Fernando Pla, Leonardo Vera, Omar Cardillo, Stefano Geniere Nigra, Lisandro Miguel Montorfano
BACKGROUND: The aim of this study is to describe point-of-care ultrasound and Color flow Duplex Doppler characteristics of penetrating and blunt trauma-related vascular injuries of the limbs and neck. METHODS: Penetrating and blunt trauma-related vascular injuries such as vein disruption, intimal flap, deep vein thrombosis, arterial dissection, pseudoaneurysm, and arteriovenous fistulae are discussed in this manuscript. Images of the most significant lesions of our personal clinical experience are presented to illustrate point-of-care ultrasound and Color flow Duplex Doppler ultrasound findings...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28210801/patient-radiation-doses-and-reference-levels-in-pediatric-interventional-radiology
#6
Bouchra Habib Geryes, Adeline Bak, Julie Lachaux, Augustin Ozanne, Nathalie Boddaert, Francis Brunelle, Olivier Naggara, Guillaume Saliou
OBJECTIVES: To describe, in a multicentric paediatric population, reference levels (RLs) for three interventional radiological procedures. METHODS: From January 2012 to March 2015, children scheduled for an interventional radiological procedure in two French tertiary centres were retrospectively included and divided into four groups according to age: children younger than 2 years (A1), aged 2-7 years (A5), 8-12 years (A10) and 13-18 years (A15). Three procedures were identified: cerebral digital subtraction angiography (DSA), brain arteriovenous malformation (bAVM) embolization, and head and neck superficial vascular malformation (SVM) percutaneous sclerotherapy...
February 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28210642/high-output-heart-failure-contributing-to-recurrent-epistaxis-kiesselbach-area-syndrome-in-a-patient-with-hereditary-hemorrhagic-telangiectasia
#7
Venugopal Brijmohan Bhattad, Jennifer N Bowman, Hemang B Panchal, Timir K Paul
Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Weber-Rendu syndrome, is a rare genetic blood disorder that leads to abnormal bleeding due to absent capillaries and multiple abnormal blood vessels known as arteriovenous malformations. A feature of HHT is high-output heart failure due to multiple arteriovenous malformations. High-output heart failure can lead to recurrent epistaxis Kiesselbach area syndrome (REKAS), further exacerbating heart failure through increased blood loss and resultant anemia...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28209646/rete-mirabile-associated-with-pial-arteriovenous-fistula-imaging-features-with-literature-review
#8
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
A rete mirabile is a vascular network of intercommunicating small arteries or arterioles that replace the definitive adult artery supplying the brain. It supplies the brain in lower mammals but is not seen in normal human embryological development. A 26-year-old man presented with worsening tinnitus that was interfering with his sleep. On CT and digital subtraction angiography he was found to have a temporal lobe pial arteriovenous fistula with bilateral carotid and vertebral rete mirabile. The patient was offered open surgical and endovascular treatment options for pial arteriovenous fistula but he refused both and opted for conservative medical management...
February 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28209577/feasibility-of-flat-panel-detector-ct-in-perfusion-assessment-of-brain-arteriovenous-malformations-initial-clinical-experience
#9
M Garcia, T W Okell, M Gloor, M A Chappell, P Jezzard, O Bieri, J V Byrne
The different results from flat panel detector CT in various pathologies have provoked some discussion. Our aim was to assess the role of flat panel detector CT in brain arteriovenous malformations, which has not yet been assessed. Five patients with brain arteriovenous malformations were studied with flat panel detector CT, DSC-MR imaging, and vessel-encoded pseudocontinuous arterial spin-labeling. In glomerular brain arteriovenous malformations, perfusion was highest next to the brain arteriovenous malformation with decreasing values with increasing distance from the lesion...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209459/progressive-subcortical-calcifications-secondary-to-venous-hypertension-in-an-intracranial-dural-arteriovenous-fistula
#10
Heather M Pascoe, Elaine H Lui, Peter Mitchell, Frank Gaillard
Intracranial dural arteriovenous fistulas (dAVF) are acquired lesions, with the most commonly reported findings on CT haemorrhage or focal oedema. We describe a case of progressive subcortical calcification on CT secondary to venous hypertension from a high grade dAVF.
February 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28207465/two-rare-variants-of-left-vertebral-artery
#11
Rajani Singh
Though the variations of vertebral artery are clinically asymptomatic yet abnormalities are of diagnostic importance either prior to vascular surgery in the neck region or in patients of intravascular diseases such as arteriovenous malformations or cerebral aneurysms. Therefore, the aim of the study is to bring out 2 variations in the configuration of vertebral artery and their clinical implication. During dissection of thorax of 2 female cadavers, 2 different variants of configurations of left vertebral arteries were observed...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28204584/angio-architectural-features-of-high-grade-intracranial-dural-arteriovenous-fistulas-correlation-with-aggressive-clinical-presentation-and-hemorrhagic-risk
#12
Giuseppe Maria Della Pepa, Paolo Parente, Francesco D'Argento, Alessandro Pedicelli, Carmelo Lucio Sturiale, Giovanni Sabatino, Alessio Albanese, Alfredo Puca, Eduardo Fernandez, Alessando Olivi, Enrico Marchese
No abstract text is available yet for this article.
February 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28203571/evolutionary-history-of-multiple-dural-fistula
#13
Braulio Martinez-Burbano, Edgar Patricio Correa Diaz, Carolina Jácome Sánchez
Intracranial dural arteriovenous fistulas (DAVFs) are abnormal communications between arteries and veins or dural venous sinuses, which sit between the sheets of the dura. They represent 10% to 15% of intracranial vascular malformations. Clinical manifestations and prognosis depend on the pattern of venous drainage and location. The clinical presentation of DAVF may be mistaken for vascular or nonvascular brain pathologies. For that reason, within the differential diagnosis come a wide range of conditions, such as secondary headaches, encephalopathies, dementias including those with rapid progression, neurodegenerative diseases, inflammatory processes, or tumors typically at the orbital level or in the cavernous sinus...
October 2016: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28201783/long-term-outcomes-with-planned-multistage-reduced-dose-repeat-stereotactic-radiosurgery-for-treatment-of-inoperable-high-grade-arteriovenous-malformations-an-observational-retrospective-cohort-study
#14
Ariel E Marciscano, Judy Huang, Rafael J Tamargo, Chen Hu, Mohamed H Khattab, Sameer Aggarwal, Michael Lim, Kristin J Redmond, Daniele Rigamonti, Lawrence R Kleinberg
No abstract text is available yet for this article.
February 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28199294/flow-induced-microvascular-network-formation-of-therapeutic-relevant-arteriovenous-av-loop-based-constructs-in-response-to-ionizing-radiation
#15
Volker J Schmidt, Jennifer M Covi, Christoph Koepple, Johannes G Hilgert, Elias Polykandriotis, Amir K Bigdeli, Luitpold V Distel, Raymund E Horch, Ulrich Kneser
BACKGROUND The arteriovenous (AV) loop model enables axial vascularization to gain a functional microcirculatory system in tissue engineering constructs in vivo. These constructs might replace surgical flaps for the treatment of complex wounds in the future. Today, free flaps are often exposed to high-dose radiation after defect coverage, according to guideline-oriented treatment plans. Vascular response of AV loop-based constructs has not been evaluated after radiation, although it is of particular importance...
February 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28195862/a-case-report-of-onyx-pulmonary-arterial-embolism-contributing-to-hypoxemia-during-awake-craniotomy-for-arteriovenous-malformation-resection
#16
Brian T Tolly, Jenna L Kosky, Antoun Koht, Laura B Hemmer
A healthy 26-year-old man with cerebral arteriovenous malformation underwent staged endovascular embolization with Onyx followed by awake craniotomy for resection. The perioperative course was complicated by tachycardia and severe intraoperative hypoxemia requiring significant oxygen supplementation. Postoperative chest computed tomography (CT) revealed hyperattenuating Onyx embolization material within the pulmonary vasculature, and an electrocardiogram indicated possible right heart strain, supporting clinically significant embolism...
February 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28195403/self-care-on-hemodialysis-behaviors-with-the-arteriovenous-fistula
#17
Clemente Neves Sousa, Patrícia Marujo, Paulo Teles, Marta Nunes Lira, Maria Eulália Leite Mota Novais
End stage renal disease (ESRD) patients should be educated to maintain and preserve the arteriovenous fistula (AVF) in the best condition. The purpose of this work was to evaluate self-care frequency and factors that influenced such frequency. A prospective study was performed in 101 hemodialysis patients. Self-care behaviors were measured with the Scale of Assessment of Self-Care Behaviours with Arteriovenous Fistula in Hemodialysis. A regression model was used to determine the relevant predictors of self-care frequency and their influence...
February 14, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28194399/the-role-of-permissive-and-induced-hypotension-in-current-neuroanesthesia-practice
#18
Suren Soghomonyan, Nicoleta Stoicea, Gurneet S Sandhu, Jeffrey J Pasternak, Sergio D Bergese
BACKGROUND: Induced hypotension (IH) had been used for decades in neurosurgery to reduce the risk for intraoperative blood loss and decrease blood replacement. More recently, this method fell out of favor because of concerns for cerebral and other end-organ ischemia and worse treatment outcomes. Other contributing factors to the decline in its popularity include improvements in microsurgical technique, widespread use of endovascular procedures, and advances in blood conservation and transfusion protocols...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28191703/iatrogenic-arteriovenous-fistula-of-the-breast-a-rare-complication-following-ultrasound-guided-core-biopsy-of-fibroadenoma
#19
Francesco Marongiu, Federico Buggi, Annalisa Curcio, Matteo Mingozzi, Paola Angela Sanna, Secondo Folli
No abstract text is available yet for this article.
February 13, 2017: Breast Journal
https://www.readbyqxmd.com/read/28191625/iatrogenic-vascular-injuries-due-to-spinal-surgeries-endovascular-perspective
#20
Mustafa Gok, Elcin Aydin, Serkan Guneyli, Ali Akay, Celal Cinar, Ismail Oran
AIM: Iatrogenic vascular injuries due to spinal surgeries are rare but serious complications. Surgical management of these injuries is challenging with high morbidity rates. In this study we aim to present the results of endovascular management of iatrogenic vascular injuries due to spinal surgeries. MATERIAL AND METHODS: We retrospectively reviewed 11 patients (5 male, 6 female) who had vascular injuries due to cervical and lumbar spinal surgeries. Clinical findings were bleeding (n=5), leg edema (n=6) and right heart failure with severe dyspnea (n=1)...
January 17, 2017: Turkish Neurosurgery
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