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Temporal arteriitis

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https://www.readbyqxmd.com/read/28436714/a-hemorrhagic-complication-after-onyx-embolization-of-a-tentorial-dural-arteriovenous-fistula-a-caution-about-subdural-extension-with-pial-arterial-supply
#1
Kenichi Sato, Yasushi Matsumoto, Hidenori Endo, Teiji Tominaga
We report a case of tentorial dural arteriovenous fistula (DAVF) with a severe intracranial hemorrhage occurring after Onyx embolization. A 40-year-old man presented with an asymptomatic tentorial DAVF on angiography. Transarterial embolization with Onyx was performed via the middle meningeal artery, and the cast filled the fistula itself and its proximal draining vein. Postoperative angiography confirmed complete occlusion of the DAVF. A computed tomography scan performed immediately after the procedure demonstrated an acute subdural hematoma with the temporal hemorrhage...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28436133/population-trends-in-prenatal-detection-of-transposition-of-great-arteries-impact-of-obstetrical-screening-ultrasound-guidelines
#2
Ravi Prasad, Mills Lindsay, Fruitman Deborah, Savard Winnie, Colen Timothy, Khoo Nee, Serrano-Lomelin Jesus, Hornberger Lisa K
BACKGROUND: D-transposition of the great arteries (D-TGA) is one of the most common critical neonatal heart defects. Although there are clinical advantages to a prenatal diagnosis, D-TGA has had low prenatal detection internationally. Recent obstetrical ultrasound guidelines incorporating screening of cardiac outflows may improve prenatal detection of D-TGA. We sought to evaluate trends in the prenatal detection of D-TGA with/without ventricular septal defect (VSD) in Alberta over the past 13 years, examining the potential impact of enhanced ultrasound guidelines in 2009-2010 and 2013 and factors impacting detection...
April 24, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28435113/microsurgical-and-endoscopic-anatomy-for-intradural-temporal-bone-drilling-and-applications-of-the-electromagnetic-navigation-system-various-extensions-of-the-retrosigmoid-approach
#3
Ken Matsushima, Noritaka Komune, Satoshi Matsuo, Michihiro Kohno
OBJECTIVE: The use of the retrosigmoid approach has recently been expanded by several modifications including the suprameatal, transmeatal, suprajugular, and inframeatal extensions. Intradural temporal bone drilling without damaging vital structures inside or beside the bone, such as the internal carotid artery and jugular bulb, is a key step for these extensions. This study aimed to examine the microsurgical and endoscopic anatomy of the extensions of the retrosigmoid approach, and to evaluate the clinical feasibility of an electromagnetic navigation system during intradural temporal bone drilling...
April 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28434956/superficial-temporal-artery-middle-cerebral-artery-bypass-surgery-for-refractory-symptomatic-intracranial-atherosclerotic-stenosis
#4
Yan Ma, Fan Yang, Liqun Jiao, Meng Li, Yabing Wang, Yanfei Chen, Feng Ling
OBJECTIVE: To evaluate blood flow changes following bypass surgery for refractory symptomatic intracranial atherosclerotic stenosis. METHODS: We examined a cohort of consecutive patients with symptomatic ICAS. STA-MCA bypass was performed in refractory patients with poor perfusion. Angiograms were graded systematically for antegrade, collateral, and bypass flow, and clinical variables were collected preoperatively, and at 7 days, and 3, 6, and 12 months postoperatively...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433851/dna-methylation-regulates-gene-expression-in-intracranial-aneurysms
#5
Lanbing Yu, Jia Wang, Shuo Wang, Dong Zhang, Yuanli Zhao, Rong Wang, Jizong Zhao
OBJECTIVE: Different gene expression profiles are observed in intracranial aneurysm tissue. Understanding these genes and what regulates their expression will help us understand intracranial aneurysm pathogenesis. We investigated whether differences in DNA methylation regulate gene expression in intracranial aneurysms. METHODS: Twenty intracranial aneurysm tissues were compared with 20 matched samples from the superficial temporal artery as controls. We detected the gene expression profiles in these samples using Human U133 Plus 2...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28432167/a-tale-of-two-vasculitides-biopsy-proven-giant-cell-arteritis-followed-by-the-independent-development-of-renal-limited-microscopic-polyangiitis
#6
Roman Zuckerman, Mayur Patel, Deborah R Alpert
We describe an 80-year-old woman who presented with headaches, bilateral jaw claudication and visual symptoms. She was diagnosed with giant cell arteritis, which was confirmed by temporal artery biopsy. She was treated with high-dose prednisone followed by a slow taper, with complete resolution of symptoms. Approximately 4 years later, she developed progressively worsening renal function associated with haematuria. Serological workup revealed a high-titre perinuclear antinuclear cytoplasmic antibody and antibodies to myeloperoxidase...
April 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28431987/patterns-of-brain-and-cardiovascular-activation-while-solving-rule-discovery-and-rule-application-numeric-tasks
#7
Tytus Sosnowski, Andrzej Rynkiewicz, Małgorzata Wordecha, Anna Kępkowicz, Adrianna Majewska, Aleksandra Pstrągowska, Tomasz Oleksy, Marek Wypych, Artur Marchewka
It is known that solving mental tasks leads to tonic increase in cardiovascular activity. Our previous research showed that tasks involving rule application (RA) caused greater tonic increase in cardiovascular activity than tasks requiring rule discovery (RD). However, it is not clear what brain mechanisms are responsible for this difference. The aim of two experimental studies was to compare the patterns of brain and cardiovascular activity while both RD and the RA numeric tasks were being solved. The fMRI study revealed greater brain activation while solving RD tasks than while solving RA tasks...
April 18, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28431637/transcranial-color-coded-sonography-of-vertebral-artery-for-diagnosis-of-right-to-left-shunts
#8
Teppei Komatsu, Yuka Terasawa, Ayumi Arai, Kenichi Sakuta, Hidetaka Mitsumura, Yasuyuki Iguchi
BACKGROUND: It is unknown whether contrast transcranial color-coded sonography of vertebral artery monitoring via the foramen magnum window (cTCCS-VA) is useful to detect right-to-left shunt (RLS). We investigated whether cTCCS-VA can be proposed as an alternative to middle cerebral artery monitoring via the temporal bone window (cTCCS-MCA) for RLS detection, as compared with contrast transesophageal echocardiography (cTEE). METHODS: We evaluated 112 patients with ischemic stroke or transient ischemic attack...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431106/ultrasound-cut-off-values-for-intima-media-thickness-of-temporal-facial-and-axillary-arteries-in-giant-cell-arteritis
#9
Valentin S Schäfer, Aaron Juche, Sofia Ramiro, Andreas Krause, Wolfgang A Schmidt
Objective.: To evaluate the intima-media thickness (IMT) of arteries involved in GCA for determining cut-off values. Methods.: Forty newly diagnosed GCA patients in a fast-track GCA clinic and 40 age- and sex-matched controls were included. IMT measurement was performed at or within 24 h after diagnosis. The common superficial temporal arteries with their frontal and parietal branches and the facial arteries were bilaterally examined with a 10-22 MHz probe and the axillary artery with a 6-18 MHz probe...
April 20, 2017: Rheumatology
https://www.readbyqxmd.com/read/28426626/parapapillary-gamma-and-delta-zones-in-high-myopia
#10
Jost B Jonas, Yuxin Fang, Pascal Weber, Kyoko Ohno-Matsui
PURPOSE: To examine parapapillary zones gamma and delta in highly myopic eyes. METHODS: The retrospective observational study included patients attending the Tokyo high myopia clinics. Fundus photographs were morphometrically examined. RESULTS: The study population included 600 eyes (304 individuals) with a mean age of 62.7 ± 14.3 years (range: 13-90 years) and mean axial length of 29.6 ± 2.2 mm (range: 23.2-35.4 mm). In multivariate analysis (regression coefficient r:0...
April 19, 2017: Retina
https://www.readbyqxmd.com/read/28424735/tongue-necrosis-secondary-to-giant-cell-arteritis-a-case-report-and-literature-review
#11
Rafael Alex Barbosa de Siqueira Sobrinho, Karolina Cayres Alvino de Lima, Helena Carvalho Moura, Mônica Modesto Araújo, Christyanne Maria Rodrigues Barreto de Assis, Pedro Alves da Cruz Gouveia
Giant cell arteritis is a form of vasculitis involving the medium- and large-sized arteries that chiefly affects older people. Clinical findings are headache, jaw claudication, fever, pain, and thickening of the temporal artery. The most feared complication is visual loss due to impairment of the ophthalmic artery and posterior ciliary arteries. This a case report of an 85-year-old male presenting with headache and jaw pain, who was admitted with tongue necrosis as an initial manifestation of giant cell arteritis...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28418526/empirically-determined-vascular-smooth-muscle-cell-mechano-adaptation-law
#12
Kerianne E Steucke, Zaw Win, Taylor R Stemler, Emily E Walsh, Jennifer L Hall, Patrick W Alford
Cardiovascular disease can alter the mechanical environment of the vascular system, leading to mechano-adaptive growth and remodeling. Predictive models of arterial mechano-adaptation could improve patient treatments and outcomes in cardiovascular disease. Vessel-scale mechano-adaptation includes remodeling of both the cells and extracellular matrix. Here, we aimed to experimentally measure and characterize a phenomenological mechano-adaptation law for vascular smooth muscle cells (VSMCs) within an artery. To do this, we developed a highly controlled and reproducible system for applying a chronic step-change in strain to individual VSMCs with in vivo like architecture, and tracked the temporal cellular stress evolution...
April 13, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28416190/flow-mediated-dilatation-and-progression-of-abdominal-aortic-aneurysms
#13
R Lee, K Bellamkonda, A Jones, N Killough, F Woodgate, M Williams, I Cassimjee, A Handa
OBJECTIVE/BACKGROUND: Biomarker(s) for prediction of the future progression rate of abdominal aortic aneurysms (AAA) may be useful to stratify the management of individual patients. AAAs are associated with features of systemic inflammation and endothelial dysfunction. Flow mediated dilatation (FMD) of the brachial artery is a recognised non-invasive measurement for endothelial function. We hypothesised that FMD is a potential biomarker of AAA progression and reflects the temporal changes of endothelial function during AAA progression...
April 13, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28414666/just-a-puff-of-smoke
#14
A Leonard
CASE: A 44 year old woman with a history of stroke s/p aneurysm clipping, seizure, and substance abuse was brought to the hospital after a family member received a call from her friend saying she was acting unusual and may have had a seizure while hanging out on the street. At her baseline, she needed modest assistance in daily activities after her CVA and conversed without issue. Her mother died of a stroke. On exam the patient was afebrile, normotensive with mild tachycardia to 110...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28411965/dynamic-cerebral-autoregulation-assessment-using-extracranial-internal-carotid-artery-doppler-ultrasonography
#15
Nai-Fang Chi, Hsiao-Lun Ku, Chen-Yen Wang, Yanhui Liu, Lung Chan, Ying-Chin Lin, Chung-Kang Peng, Vera Novak, Han-Hwa Hu, Chaur-Jong Hu
Transcranial Doppler ultrasonography of the middle cerebral artery (MCA) is frequently used to assess dynamic cerebral autoregulation (dCA); however, this is difficult in patients with poor temporal bone windows. In the study described here, we investigated the agreement and sensitivity of dCA indices determined from the extracranial internal carotid artery (ICA) and those determined from the MCA. Measurements for 32 stroke patients and 59 controls were analyzed. Measurement of the mean flow correlation index (Mx) and transfer function analysis based on spontaneous blood pressure fluctuation were simultaneously performed for the extracranial ICA and MCA...
April 12, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28409733/endovascular-management-of-acute-epidural-hematomas-clinical-experience-with-80-cases
#16
Carlos Michel A Peres, Jose Guilherme M P Caldas, Paulo Puglia, Almir F de Andrade, Igor A F da Silva, Manoel J Teixeira, Eberval G Figueiredo
OBJECTIVE Small acute epidural hematomas (EDHs) treated conservatively carry a nonmeasurable risk of late enlargement due to middle meningeal artery (MMA) lesions. Patients with EDHs need to stay hospitalized for several days, with neurological supervision and repeated CT scans. In this study, the authors analyzed the safety and efficacy of the embolization of the involved MMA and associated lesions. METHODS The study group consisted of 80 consecutive patients harboring small- to medium-sized EDHs treated by MMA embolization between January 2010 and December 2014...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28409051/revisiting-hemicraniectomy-late-decompressive-hemicraniectomy-for-malignant-middle-cerebral-artery-stroke-and-the-role-of-infarct-growth-rate
#17
Saadat Kamran, Naveed Akhtar, Abdul Salam, Ayman Alboudi, Kainat Kamran, Arsalan Ahmed, Rabia A Khan, Mohsin K Mirza, Jihad Inshasi, Ashfaq Shuaib
Objective and Methods. The outcome in late decompressive hemicraniectomy in malignant middle cerebral artery stroke and the optimal timings of surgery has not been addressed by the randomized trials and pooled analysis. Retrospective, multicenter, cross-sectional study to measure outcome following DHC under 48 or over 48 hours using the modified Rankin scale [mRS] and dichotomized as favorable ≤4 or unfavorable >4 at three months. Results. In total, 137 patients underwent DHC. Functional outcome analyzed as mRS 0-4 versus mRS 5-6 showed no difference in this split between early and late operated on patients [P = 0...
2017: Stroke Research and Treatment
https://www.readbyqxmd.com/read/28405477/influence-of-adaptive-statistical-iterative-reconstruction-algorithm-on-image-quality-in-coronary-computed-tomography-angiography
#18
Helle Precht, Jesper Thygesen, Oke Gerke, Kenneth Egstrup, Dag Waaler, Jess Lambrechtsen
BACKGROUND: Coronary computed tomography angiography (CCTA) requires high spatial and temporal resolution, increased low contrast resolution for the assessment of coronary artery stenosis, plaque detection, and/or non-coronary pathology. Therefore, new reconstruction algorithms, particularly iterative reconstruction (IR) techniques, have been developed in an attempt to improve image quality with no cost in radiation exposure. PURPOSE: To evaluate whether adaptive statistical iterative reconstruction (ASIR) enhances perceived image quality in CCTA compared to filtered back projection (FBP)...
December 2016: Acta Radiologica Open
https://www.readbyqxmd.com/read/28405470/is-vascular-endothelial-growth-factor-a-useful-biomarker-in-giant-cell-arteritis
#19
Nicola Goodfellow, Julien Morlet, Surjeet Singh, Afsie Sabokbar, Andrew Hutchings, Vanshika Sharma, Jana Vaskova, Shauna Masters, Allahdad Zarei, Raashid Luqmani
OBJECTIVES: To assess the performance of circulating vascular endothelial growth factor (VEGF) levels as a tool for diagnosing giant cell arteritis (GCA) in a cohort of patients referred for assessment of suspected GCA. METHODS: We selected 298 patients recruited to the multicentre study Temporal Artery Biopsy versus Ultrasound in diagnosis of suspected GCA (TABUL). In a random subset of 26 biopsy-proven GCA cases and 26 controls, serum from weeks 0, 2 and 26 was analysed for VEGF concentration using ELISA...
2017: RMD Open
https://www.readbyqxmd.com/read/28404668/nasalised-distribution-of-peripapillary-retinal-nerve-fibre-layers-in-large-discs
#20
Eun Jung Lee, Jong Chul Han, Changwon Kee
BACKGROUND: To describe the distribution pattern of the peripapillary retinal nerve fibre layer (RNFL) and major retinal vessel positions in patients with a large disc. METHODS: The medical records of patients with a large disc and those of normal controls were reviewed retrospectively. Comprehensive ophthalmic examinations including Cirrus HD-optical coherence tomography (OCT) and Heidelberg Retinal Tomography III (HRT III) were performed. We divided patients into two groups (large disc group and control group) using an HRT-measured disc size of 2...
April 12, 2017: British Journal of Ophthalmology
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