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https://www.readbyqxmd.com/read/27935469/preoperative-transdural-collateral-vessels-in-moyamoya-as-radiographic-biomarkers-of-disease
#1
Armide Storey, R Michael Scott, Richard Robertson, Edward Smith
OBJECTIVE The prevalence of angiographically evident preoperative transdural collateral vessels in moyamoya is not well documented. The authors hypothesized that transdural collaterals could be used as radiographic biomarkers of disease, and that their presence is associated with more advanced moyamoya arteriopathy at diagnosis, which is a harbinger of more frequent operative complications and a predictor of better long-term angiographic results following surgery. METHODS The study consists of a single-institution case series of patients with moyamoya who underwent pial synangiosis between 2005 and 2013...
December 9, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27932132/collateral-development-in-thrombosis-of-the-hepatic-artery-after-transplantation
#2
C M García Bernardo, B Argüelles García, P Redondo Buil, A Miyar de León, L González Dieguez, V Cadahía Rodrigo, I González-Pinto Arrillaga, L Vázquez Velasco
OBJECTIVES: The authors sought to identify strictures or hepatic artery obstruction with posterior collateral transformation in our series of liver transplantation, treatment, and evolution. The thrombosis or severe hepatic artery stenosis sometimes presents a compensation mechanism, the collateral transformation of the artery. MATERIAL AND METHODS: From April 2002 to December 2011 we collected 18 cases of collateral transformation. We analyzed data regarding the transplantation, diagnosis, treatment, clinical evolution, liver function, and Doppler-ultrasound...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27928391/a-moyamoya-patient-with-bilateral-consecutive-branch-retinal-vein-occlusion
#3
Hande Güçlü, Vuslat Pelitli Gurlu, Sadık Altan Ozal, Haluk Esgin
We describe a moyamoya (MMD) patient with bilateral consecutive branch retinal vein occlusion (BRVO). The patient had a medical history of severe headache, cranial haemorrhage, bilateral supraclinoid carotid artery occlusion, and "puff of smoke" collaterals on cerebral angiography and an encephalomyosynangiosis operation. On ophthalmic examination, he had superior temporal branch vein occlusion with intraretinal haemorrhage and visual acuity of 20/25 in the right eye. Twelve years later, he presented with superior temporal branch vein occlusion in the left eye and visual acuity of 20/60...
April 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27928381/central-retinal-vein-occlusion-in-a-childhood-optic-nerve-tumour
#4
Igor Kozak, Sahar M Elkhamary, Thomas M Bosley
The authors describe the first paediatric patient with an aggressive optic nerve tumour of uncertain histology causing a central retinal vein occlusion, retinochoroidal collaterals, arteriovenous anastomoses, and peripheral retinal non-perfusion. He first presented with pale optic nerve head, followed by development of optic disc oedema a year later. Certain optic nerve tumours can present with central retinal vein occlusion in the paediatric age group.
February 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27925689/prognostic-significance-of-hepatic-arterial-collaterals-in-liver-transplant-recipients-with-biliary-strictures
#5
André Viveiros, Rafael Rehwald, Erich Vettori, Armin Finkenstedt, Maria Effenberger, Benedikt Schaefer, Livia Dorn, Herbert Tilg, Stefan Schneeberger, Bernhard Glodny, Heinz Zoller, Martin C Freund
BACKGROUND: The aim of the present study was to determine the prevalence of hepatic artery stenosis (HAS) and the prognostic implications of hepatic arterial collaterals in liver transplant (LT) recipients with biliary strictures. METHODS: 105 LT recipients transplanted between 2004 and 2015 at our center had documented biliary strictures. HAS and collaterals were assessed in high quality imaging of the hepatic artery available from 66 recipients. Clinical, demographic and biochemical recipient and donor data were retrospectively analyzed and tested for their association with biliary of arterial complications after LT...
December 7, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27924799/collateral-flow-and-white-matter-disease-in-patients-with-internal-carotid-artery-occlusion
#6
Mami Ishikawa, Hitoshi Sugawara, Mutsumi Nagai, Gen Kusaka, Yuichi Tanaka, Heiji Naritaka
BACKGROUND: When an internal carotid artery (ICA) occludes, a patient may develop cerebral infarction (CI). We investigated whether CI caused by ICA occlusion (ICAO) is associated with collateral flow through the anterior and posterior communicating arteries (ACoA and PCoA). METHODS: In 100 patients with ICAO, we investigated CI and white matter disease by performing an MRI and the anatomy of the ACoA and PCoA were investigated by performing magnetic resonance angiography...
December 8, 2016: European Neurology
https://www.readbyqxmd.com/read/27923460/comparison-of-characteristics-and-complications-in-men-versus-women-undergoing-chronic-total-occlusion-percutaneous-intervention
#7
Vinoda Sharma, William Wilson, William Smith, Margaret McEntegart, Keith Oldroyd, Novalia Sidik, Alan Bagnall, Mohaned Egred, John Irving, Julian Strange, Thomas Johnson, Simon Walsh, Colm Hanratty, James Spratt
Gender differences exist in clinical outcomes after routine percutaneous coronary intervention (PCI), but studies reporting such outcomes after chronic total occlusion (CTO) PCI are limited. We assessed the characteristics and outcomes of female patients undergoing CTO PCI. We retrospectively analyzed a dedicated national (United Kingdom) prospective CTO database from 2011 to 2015 for outcomes and characteristics of female patients undergoing CTO PCI (unmatched and propensity matched). Female patients constituted 20...
November 16, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27921207/pattern-of-venous-collateral-development-after-splenic-vein-occlusion-in-an-extended-whipple-procedure-whipple-at-the-splenic-artery-and-long-term-results
#8
Ismael Dominguez Rosado, Sanjeev Bhalla, Luis A Sanchez, Ryan C Fields, William G Hawkins, Steven M Strasberg
BACKGROUND: Extended Whipple procedures may require division of the splenic vein (SV). Controversy exists regarding the risk of sequelae of sinistral portal hypertension when the SV is ligated without reimplantation. The aim of this study was to identify postoperative venous collateral patterns and sequelae of SV ligation, as well as long-term results in an extended Whipple procedure. STUDY DESIGN: Patients who had an extended Whipple procedure (Whipple at the Splenic Artery or WATSA) were entered in an institutional database...
December 5, 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/27917651/the-correlation-between-lymphocyte-monocyte-ratio-and-coronary-collateral-circulation-in-stable-coronary-artery-disease-patients
#9
Alparslan Kurtul, Mustafa Duran
AIM: Coronary collateral circulation (CCC) has an important impact on cardiovascular prognosis and well-developed CCC is associated with better clinical outcomes. We investigated whether lymphocyte/monocyte ratio (LMR) has an association with CCC in patients with stable coronary artery disease (SCAD). METHODS: The study population consisted of 245 patients with SCAD. Patients were classified into a poor CCC group (Rentrop grades 0/1, n = 87), or good CCC group (Rentrop grades 2/3, n = 158)...
December 5, 2016: Biomarkers in Medicine
https://www.readbyqxmd.com/read/27909265/prevention-of-the-collapse-of-pial-collaterals-by-remote-ischemic-perconditioning-during-acute-ischemic-stroke
#10
Junqiang Ma, Yonglie Ma, Bin Dong, Mischa V Bandet, Ashfaq Shuaib, Ian R Winship
Collateral circulation is a key variable determining prognosis and response to recanalization therapy during acute ischemic stroke. Remote ischemic perconditioning (RIPerC) involves inducing peripheral ischemia (typically in the limbs) during stroke and may reduce perfusion deficits and brain damage due to cerebral ischemia. In this study, we directly investigated pial collateral flow augmentation due to RIPerC during distal middle cerebral artery occlusion (MCAo) in rats. Blood flow through pial collaterals between the anterior cerebral artery (ACA) and the MCA was assessed in male Sprague Dawley rats using in vivo laser speckle contrast imaging (LSCI) and two photon laser scanning microscopy (TPLSM) during distal MCAo...
December 1, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27909201/infarct-pattern-and-collateral-status-in-adult-moyamoya-disease-a-multimodal-magnetic-resonance-imaging-study
#11
Dong Yeop Kim, Jeong Pyo Son, Je Young Yeon, Gyeong-Moon Kim, Jong-Soo Kim, Seung-Chyul Hong, Oh Young Bang
BACKGROUND AND PURPOSE: Moyamoya disease (MMD) is a unique cerebrovascular disease characterized by the progressive stenosis of large intracranial arteries and a hazy network of basal collaterals, called moyamoya vessels. Although hemodynamic studies have been applied in MMD patients, the mechanisms of stroke in MMD are still unclear. The present study evaluated the infarct pattern and collateral status using multimodal magnetic resonance imaging in MMD patients. METHODS: Adult MMD patients with acute ischemic stroke were prospectively recruited, and infarct pattern on diffusion-weighted imaging was evaluated...
December 1, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27897305/-cervical-ischaemic-neuronopathy-and-cardioembolism-another-cause-of-man-in-the-barrel-syndrome
#12
H Gonzalez-Usigli, A Gandarilla, J J Garcia, J Serrato, N Estrada
INTRODUCTION: Spinal infarction accounts for 1% of all strokes. Cardioembolism is a rare cause. Common areas of ischemic spinal damage are watershed in the dorsal or lumbar regions; however cervical spinal cord infarction has been reported previously. CASE REPORT: We present a new case of a man-in-the-barrel syndrome produced by cardiac embolization associated with atrial fibrillation during an acute myocardial infarction, which caused cervical ischemic neuronopathy (infarction of the anterior horn)...
December 16, 2016: Revista de Neurologia
https://www.readbyqxmd.com/read/27889934/vascular-cell-transcriptomic-changes-to-exercise-training-differ-directionally-along-and-between-skeletal-muscle-arteriolar-trees
#13
M Harold Laughlin, Hsiao T Yang, Darla L Tharp, R Scott Rector, Jaume Padilla, Douglas K Bowles
EXT-induced arteriolar adaptations in skeletal muscle are heterogeneous because of spatial variations in muscle fiber type composition and fiber recruitment patterns during exercise. The purpose of this report is to summarize a series of experiments conducted to test the hypothesis that changes in vascular gene expression are signaled by alterations in shear stress resulting from increases in blood flow, muscle fiber type composition and fiber recruitment patterns. We also report results from a follow-up study of Ankrd23, one gene whose expression was changed by EXT...
November 27, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27888269/internal-carotid-artery-pseudoaneurysm-and-ischemic-stroke-secondary-to-retropharyngeal-and-parapharyngeal-abscess-a-case-report-and-review-of-the-literature
#14
Michael W Ruff, Deena M Nasr, James P Klaas, Deborah L Renaud
Internal carotid artery pseudoaneurysm is an uncommon complication of retropharyngeal and parapharyngeal abscess in children. Treatment of the pseudoaneurysm has evolved in recent years from surgical ligation to endovascular techniques. Neurologic sequelae most commonly consist of Horner's syndrome with cerebral ischemia being uncommon. The clinical course of a 2-year-old boy with retropharyngeal abscess complicated by internal carotid artery pseudoaneurysm, is described and the literature is reviewed. A conventional angiogram confirmed the presence of a large pseudoaneurysm with no anterograde flow distal to the pseudoaneurysm and substantial collateral flow across the circle of Willis, with filling of the left anterior and middle cerebral arteries via the anterior and posterior communicating arteries...
November 25, 2016: Journal of Child Neurology
https://www.readbyqxmd.com/read/27875796/development-of-extensive-inferior-vena-cava-thrombosis-due-to-the-ligation-of-a-large-mesenteric-caval-shunt-during-liver-transplantation-a-case-report
#15
Hideya Kamei, Yasuharu Onishi, Masatoshi Ishigami, Yoji Ishizu, Kojiro Suzuki, Yasuhiro Ogura
INSTRUCTION: Inferior vena cava (IVC) thrombosis can be a life-threatening complication after liver transplantation (LT). Although this complication is usually related to technical problems associated with vascular anastomosis, we report a case of IVC thrombosis which developed from a ligated large mesenteric-caval shunt. PRESENTATION OF CASE: A 35-year-old man underwent LT from a brain-dead donor for primary sclerosing cholangitis. Enhanced computed tomography (CT) before LT showed a huge collateral vessel of the inferior mesenteric vein (IMV) draining into the infra-renal IVC directly...
November 15, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27875725/association-of-cxcr4-expression-with-coronary-collateralization-in-patients-with-chronic-total-coronary-occlusion-a-nested-case-control-study
#16
Chun Yang, Wenjin Zhu, Xiu Han, Aiqun Ma, Ling Bai, Feng Xu
OBJECTIVE: CXCR4 signaling contributes to the development and progression of neovascularization. The objective of this study was to investigate whether CXCR4 expression in peripheral CD34+ cells associated with the coronary collateralization (CC) in patients with chronic total coronary occlusion (CTO). METHODS AND RESULTS: We measured CXCR4 expression in peripheral CD34+ cells and assessed its relation with CC in a nested case-control study including 78 cases and 78 matched controls aged 38-69years, assessed in January 2011 to December 2012 and with at least 1year of follow-up before the index date...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27864462/collateral-status-and-tissue-outcome-after-intra-arterial-therapy-for-patients-with-acute-ischemic-stroke
#17
Anna Mm Boers, Ivo Gh Jansen, Olvert A Berkhemer, Albert J Yoo, Hester F Lingsma, Cornelis H Slump, Yvo Bwem Roos, Robert J van Oostenbrugge, Diederik Wj Dippel, Aad van der Lugt, Wim H van Zwam, Henk A Marquering, Charles Blm Majoie
*These authors contributed equally to this work. †A list of all MR CLEAN Investigators is given in Appendix 1Intra-arterial therapy (IAT) for ischemic stroke aims to save brain tissue. Collaterals are thought to contribute to prolonged penumbra sustenance. In this study, we investigate the effect of collateral status on brain tissue salvage with IAT. In 500 patients randomized between IAT and standard care, collateral status was graded from 0 (absent) to 3 (good). Final infarct volumes (FIV) were calculated on post-treatment CT...
November 18, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27860111/coronary-artery-spatial-distribution-of-chronic-total-occlusions-insights-from-a-large-us-registry
#18
Santiago Garcia, M Chadi Alraies, Aris Karatasakis, Demetris Yannopoulos, Dimitri Karmpaliotis, Khaldoon Alaswad, Farouc A Jaffer, Robert W Yeh, Mitul P Patel, John Bahadorani, Judit Karacsonyi, Pratik Kalsaria, Barbara Danek, Subhash Banerjee, Emmanouil S Brilakis
OBJECTIVE: To assess the spatial distribution of chronic total occlusions (CTOs) within the coronary arteries and describe procedural strategies and outcomes during CTO percutaneous coronary intervention (PCI). BACKGROUND: Acute occlusions due to plaque rupture tend to cluster within the proximal third of the coronary artery. METHODS: We examined the clinical and procedural characteristics of 1,348 patients according to lesion location within the coronary tree...
November 10, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27859886/collateral-blood-flow-in-different-cerebrovascular-hierarchy-provides-endogenous-protection-in-cerebral-ischemia
#19
Chuanming Luo, Fengyin Liang, Huixia Ren, Xiaoli Yao, Qiang Liu, Mingyue Li, Dajiang Qin, Ti-Fei Yuan, Zhong Pei, Huanxing Su
Collateral blood flow as vascular adaptions to focal cerebral ischemia is well recognized. However, few studies directly investigate the dynamics of collateral vessel recruitment in vivo and little is known about the effect of collateral blood flow in different cerebrovascular hierarchy on the neuropathology after focal ischemic stroke. Here, we report that collateral blood flow is critically involved in blood vessel compensations following regional ischemia. We occluded a pial arteriole using femtosecond laser ablating under the intact thinned skull and documented the changes of collateral flow around the surface communication network and between the surface communication network and subsurface microcirculation network using in vivo two photon microscopy imaging...
November 15, 2016: Brain Pathology
https://www.readbyqxmd.com/read/27856435/impact-of-pial-collaterals-on-infarct-growth-rate-in-experimental-acute-ischemic-stroke
#20
G A Christoforidis, P Vakil, S A Ansari, F H Dehkordi, T J Carroll
BACKGROUND AND PURPOSE: Cerebral infarction evolves at different rates depending on available blood flow suggesting that treatment time windows vary depending on the degree of pial collateral recruitment. This work sought to mathematically model infarct growth and determine whether infarct volume growth can be predicted by angiographic assessment of pial collateral recruitment in an experimental MCA occlusion animal model. MATERIALS AND METHODS: Pial collateral recruitment was quantified by using DSA, acquired 15 minutes following permanent MCA occlusion in 6 canines based on a scoring system (average pial collateral score) and arterial arrival time...
November 17, 2016: AJNR. American Journal of Neuroradiology
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