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https://www.readbyqxmd.com/read/27932509/use-of-phase-contrast-mra-to-assess-intracranial-venous-sinus-resistance-to-drainage-in-healthy-individuals
#1
S Fall, G Pagé, J Bettoni, R Bouzerar, O Balédent
BACKGROUND AND PURPOSE: Resistance to blood flow in the cerebral drainage system may affect cerebral hemodynamics. The objective of the present study was to use phase-contrast MRA to quantify resistance to drainage of blood across branches of the venous sinus tree and to determine whether the resistance to drainage values correlated with internal jugular vein outflows. MATERIALS AND METHODS: We performed whole-head phase-contrast MRA and 2D phase-contrast MR imaging in 31 healthy volunteers...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27928378/sixth-nerve-palsy-in-paediatric-intracranial-hypertension
#2
Julia E Reid, Rachel E Reem, Shawn C Aylward, David L Rogers
The purpose of this study was to report the incidence and describe the characteristics of sixth cranial nerve (CN VI) palsy in paediatric patients with intracranial hypertension (IH). A retrospective chart review of central Ohio children diagnosed with IH over the 3-year period from 2010 to 2013 was conducted. IH without identifiable cause was defined as idiopathic intracranial hypertension (IIH), whereas IH with identifiable pathologic aetiology was deemed secondary intracranial hypertension (SIH). A subset of patients with CN VI palsy was identified...
February 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27925301/atypical-case-of-perimesencephalic-subarachnoid-hemorrhage
#3
Konark Malhotra, Shino D Magaki, Maria Inmaculada Cobos Sillero, Harry V Vinters, Reza Jahan, Robert D Brown, David S Liebeskind
Perimesencephalic subarachnoid hemorrhage (PM-SAH) refers to intracranial hemorrhage located in the perimesencephalic cistern. The etiology remains mainly unclear, although venous leakage or rupture has been postulated. We report an interesting case of a 57-year-old healthy man who presented initially with PM-SAH with worsening of subcortical lesions on follow-up neuroimaging. Histopathological examination demonstrated cerebral amyloid angiopathy with perivascular inflammation.
December 7, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/27923749/spinal-glomus-arteriovenous-malformation-presenting-with-a-subarachnoid-hemorrhage
#4
Pascal Jabbour, Badih Daou, Elias Atallah, Fadi Al-Saiegh, Kenan Alkhalili, Stavropoula Tjoumakaris
BACKGROUND AND IMPORTANCE: Spinal arteriovenous malformations (AVMs) are rare lesions that may cause serious neurologic morbidity. With the developments in endovascular technology and embolic materials, endovascular management of spinal AVMs has gained significant popularity. CLINICAL PRESENTATION: A 61-year-old female presented with the worst headache of her life, associated with an acute onset of nausea and vomiting and was shown to have a grade 2 subarachnoid hemorrhage on CT scan...
December 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27923226/intraoperative-tumoral-bleeding-of-hypervascular-medulloblastoma-after-ventricular-drainage-a-case-report
#5
Han-Seung Ryu, Tae-Young Jung, Moon-Soo Han, Seul-Ki Kim, Kyung-Hwa Lee
We report a rare case of intraoperative tumoral bleeding of a hypervascular medulloblastoma. A 12-year-old girl presented with dizziness and nausea. Brain magnetic resonance (MR) images revealed an approximately 4.2-cm enhanced mass on the cerebellar vermis associated with mild perilesional edema and increased cerebral blood volume. Angiography showed tumoral staining and developed occipital and circular dural sinuses in the venous phase. A suboccipital craniotomy was performed. To relieve the intracranial pressure, cerebrospinal fluid (CSF) was drained via a lateral ventricular catheter in the occipital horn...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27920655/deep-vein-thrombosis-as-initial-manifestation-of-whipple-disease
#6
Mônica Souza de Miranda Henriques, Alexandre Rolim da Paz, Ana Beatriz Person Gaertner, Cibelle Ingrid Stephen Melo, Priscyanne Lins Filgueiras, Rafaella Alencar Jerome
INTRODUCTION: Wipple disease (WD) is a rare chronic disease caused by the bacillus Tropheryma whipplei. Constitutive, rheumatologic, gastrointestinal, cardiac, cerebral, lymphatic, cutaneous, and ophthalmological signs are possible systemic symptoms. However, thrombotic manifestations are rarely described as "stroke-like syndrome" or arterial thrombosis. Diagnosis is based on clinical manifestations and pathological examination. Laboratory findings may include anemia, leukocytosis, and thrombocytosis...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27917948/association-of-cortical-vein-filling-with-clot-location-and-clinical-outcomes-in-acute-ischaemic-stroke-patients
#7
Sonu Bhaskar, Andrew Bivard, Peter Stanwell, John R Attia, Mark Parsons, Michael Nilsson, Christopher Levi
Delay in cortical vein filling during the late-venous phase (delayed-LCVF) is characterized by opacification of cerebral veins despite contrast clearance from contralateral veins on dynamic computed tomography angiography (dCTA) in acute ischemic stroke (AIS) patients. The aim of the study was to investigate the associations of delayed-LCVF with clot location, reperfusion status at 24 hours, and 90-days functional outcome in AIS patients who received reperfusion therapy. A prospective cohort of AIS patients treated with intravenous thrombolysis was studied...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27915164/can-the-cerebral-regional-oxygen-saturation-be-a-perfusion-parameter-in-shock
#8
Ashraf Al Tayar, Amr Abouelela, Khaja Mohiuddeen
INTRODUCTION: Shock, defined as a state of tissue hypoperfusion and the tissues reperfusion, is the main goal of management of shock. Increase in central venous saturation (CvSo2) and decrease in blood lactate level are useful in assessment of adequacy of tissue perfusion. Near-infrared spectroscopy is a noninvasive way to observe real-time changes in regional cerebral saturation and has been used in patients with different brain diseases. There is a small body of literature suggesting that cerebral regional oxygen saturation (CrSo2) monitoring added a value in assessment and management of intensive care unit (ICU) patients...
November 10, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27911234/ventriculostomy-associated-hemorrhage-a-risk-assessment-by-radiographic-simulation
#9
Faith C Robertson, Muhammad M Abd-El-Barr, Srinivasan Mukundan, William B Gormley
OBJECTIVE Ventriculostomy entry sites are commonly selected by freehand estimation of Kocher's point or approximations from skull landmarks and a trajectory toward the ipsilateral frontal horn of the lateral ventricles. A recognized ventriculostomy complication is intracranial hemorrhage from cortical vessel damage; reported rates range from 1% to 41%. In this report, the authors assess hemorrhagic risk by simulating traditional ventriculostomy trajectories and using CT angiography (CTA) with venography (CTV) data to identify potential complications, specifically from cortical draining veins...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27908450/the-learning-curve-effect-on-embolization-of-cerebral-dural-arteriovenous-fistula-single-center-experience-in-48%C3%A2-consecutive-patients
#10
D Le Foll, H Raoult, J C Ferré, F Naudet, D Trystram, J Y Gauvrit
BACKGROUND: Cerebral dural arteriovenous fistulas (DAVFs) are rare intracranial vascular lesions but can cause significant morbidity and mortality. OBJECTIVES: To analyze the effect of the center's experience on DAVF embolization efficacy and safety. METHODS: From May 2008 to October 2014, 57 embolization procedures were attempted on 48 patients (37 men and 11 women; median age: 63.9 years) for DAVF in a single center. DAVF presented with cortical venous reflux in 44/48 cases (91...
November 28, 2016: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27904262/treatment-of-cerebral-venous-sinus-thrombosis-with-subdural-hematoma-and-subarachnoid-hemorrhage
#11
Khalid Ismail Khatib, Ajit Subhash Baviskar
No abstract text is available yet for this article.
October 2016: Journal of Emergencies, Trauma, and Shock
https://www.readbyqxmd.com/read/27902676/dural-sinus-cerebral-venous-thrombosis-in-a-pediatric-trauma-patient-a-rare-complication-after-closed-head-injury
#12
Jonathan Wilcher, Michelle Pannell
OBJECTIVE: Closed head injury rarely predisposes patients, particularly children, to the development of dural sinus thrombosis. In addition, most cases of sinus thrombosis are subacute in nature. The following is a case report of a precipitous course of dural sinus thrombosis after closed head injury in a pediatric trauma patient. DESCRIPTION: A 14-year-old African American girl presented to the emergency department as a trauma activation. She was an unrestrained rear-seat passenger involved in a motor vehicle collision during which she was ejected...
December 2016: Pediatric Emergency Care
https://www.readbyqxmd.com/read/27895794/trousseau-s-syndrome-caused-by-bladder-cancer-producing-granulocyte-colony-stimulating-factor-and-parathyroid-hormone-related-protein-a-case-report
#13
Tomonori Kato, Kenji Yasuda, Hiroaki Iida, Akihiko Watanabe, Yasuyoshi Fujiuchi, Shigeharu Miwa, Johji Imura, Akira Komiya
The present study reports a rare case of bladder cancer that caused Trousseau's syndrome, a malignancy-associated hypercoagulative state leading to venous or arterial thrombosis. A 38-year-old Japanese female patient experienced a sudden onset of visual field defects and lower limb weakness. Cerebral magnetic resonance imaging revealed multi-regional hypointense areas compatible with acute cerebral infarction. Despite the repeated administration of anticoagulant treatment with heparin, the condition could not be adequately controlled and thromboembolic events occasionally recurred...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27894675/the-manifestation-of-vortical-and-secondary-flow-in-the-cerebral-venous-outflow-tract-an-in-vivo-mr-velocimetry-study
#14
Sarah Kefayati, Matthew Amans, Farshid Faraji, Megan Ballweber, Evan Kao, Sinyeob Ahn, Karl Meisel, Van Halbach, David Saloner
Aberrations in flow in the cerebral venous outflow tract (CVOT) have been implicated as the cause of several pathologic conditions including idiopathic intracranial hypertension (IIH), multiple sclerosis (MS), and pulsatile tinnitus (PT). The advent of 4D flow magnetic resonance imaging (4D-flow MRI) has recently allowed researchers to evaluate blood flow patterns in the arterial structures with great success. We utilized similar imaging techniques and found several distinct flow characteristics in the CVOT of subjects with and without lumenal irregularities...
November 15, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27892636/impaired-retinal-vasoreactivity-an-early-marker-of-stroke-risk-in-diabetes
#15
Kerstin Bettermann, Julia Slocomb, Vikram Shivkumar, David Quillen, Thomas W Gardner, Mary E Lott
Diabetes is a common cause of small vessel disease leading to stroke and vascular dementia. While the function and structure of large cerebral vessels can be easily studied, the brain's microvasculature remains difficult to assess. Previous studies have demonstrated that structural changes in the retinal vessel architecture predict stroke risk, but these changes occur at late disease stages. Our goal was to examine whether retinal vascular status can predict cerebral small vessel dysfunction during early stages of diabetes...
November 28, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27890753/geographically-remote-cerebral-venous-sinus-thrombosis-in-patients-with-intracranial-tumors
#16
Daniel M S Raper, Alicia M Zukas, David Schiff, Ashok R Asthagiri
Cerebral venous sinus thrombosis (CVST) related to intracranial tumors has most commonly been recognized as an operative complication related to local operative factors such as retraction or direct venous injury. CVST may also be caused by tumor related factors such as local mass effect, but rarely occurs geographically remote from the site of the tumor. We report six cases treated at our institution of intracranial supratentorial tumors associated with CVST. In each case, the CVST was remote from the surgical site...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27886800/beh%C3%A3-et-s-disease-how-to-diagnose-and-treat-vascular-involvement
#17
REVIEW
Emire Seyahi
Behçet's disease is a multisystem disorder with unknown etiology and a unique geographic distribution. The disease is characterized by recurrent skin-mucosa lesions and sight-threatening panuveitis. Vascular involvement, which is more common and more severe among males, has also equally characteristic features such as affecting mostly veins, having a significant tendency for thrombosis, and running a relapsing course. Lower extremity vein thrombosis (LEVT) is the most frequent manifestation, followed by vena cava inferior thrombosis...
April 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27881587/pai-1-polymorphism-as-a-cause-of-severe-high-altitude-associated-arteriovenous-thrombosis
#18
Velu Nair, Uday Yanamandra, Rai Kumud, Kanjakya Ghosh
We present a 34-year-old man who developed disseminated intra-arterial and venous thrombosis following exposure to extreme high altitude. On evaluation, the patient was found to have thrombosis involving the aorta, bilateral iliac arteries and middle cerebral artery. On detailed evaluation for the cause of recurrent seizures, he was also found to have cerebral venous thrombosis of the superior sagittal sinus. The patient underwent amputation of 3 limbs due to gangrene. Procoagulant work up revealed increased plasminogen activator inhibitor-1 activity with 4G/4G polymorphism...
November 23, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27881556/nitrite-and-s-nitrosohemoglobin-exchange-across-the-human-cerebral-and-femoral-circulation-relationship-to-basal-and-exercise-blood-flow-responses-to-hypoxia
#19
Damian M Bailey, Peter Rasmussen, Morten Overgaard, Kevin A Evans, Aske M Bohm, Thomas Seifert, Patrice Brassard, Morten Zaar, Henning B Nielsen, Peter Raven, Niels H Secher
BACKGROUND: -The mechanisms underlying red blood cell (RBC)-mediated hypoxic vasodilation remain controversial with separate roles for nitrite (NO2(-)) and S-nitrosohemoglobin (SNO-Hb) widely contested given their ability to transduce nitric oxide (NO) bioactivity within the microcirculation. To establish their relative contribution in vivo, we quantified arterial-venous (a-v) concentration gradients across the human cerebral and femoral circulation at rest and during exercise, an ideal model system characterized by physiological extremes of O2 tension and blood flow...
November 15, 2016: Circulation
https://www.readbyqxmd.com/read/27881526/towards-the-genetic-basis-of-cerebral-venous-thrombosis-the-beast-consortium-a-study-protocol
#20
Ioana Cotlarciuc, Thomas Marjot, Muhammad S Khan, Sini Hiltunen, Elena Haapaniemi, Tiina M Metso, Jukka Putaala, Susanna M Zuurbier, Matthijs C Brouwer, Serena M Passamonti, Paolo Bucciarelli, Emanuela Pappalardo, Tasmin Patel, Paolo Costa, Marina Colombi, Patrícia Canhão, Aleksander Tkach, Rosa Santacroce, Maurizio Margaglione, Giovanni Favuzzi, Elvira Grandone, Donatella Colaizzo, Kostas Spengos, Antonio Arauz, Amanda Hodge, Reina Ditta, Stephanie Debette, Marialuisa Zedde, Guillaume Pare, José M Ferro, Vincent Thijs, Alessandro Pezzini, Jennifer J Majersik, Ida Martinelli, Jonathan M Coutinho, Turgut Tatlisumak, Pankaj Sharma
INTRODUCTION: Cerebral venous thrombosis (CVT) is a rare cerebrovascular condition accounting for <1% of all stroke cases and mainly affects young adults. Its genetic aetiology is not clearly elucidated. METHODS AND ANALYSIS: To better understand the genetic basis of CVT, we have established an international biobank of CVT cases, Biorepository to Establish the Aetiology of Sinovenous Thrombosis (BEAST) which aims to recruit highly phenotyped cases initially of European descent and later from other populations...
November 22, 2016: BMJ Open
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