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dissecting aneurysm

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https://www.readbyqxmd.com/read/28105135/takayasu-s-arteritis-presenting-with-common-carotid-artery-dissection-a-rare-case-report
#1
Ruonan Hao, Jie Zhang, Zhicheng Ma, Ming Xiao, Lei Zhou, Nan Kang, Xiaoyu Liang, Fuxin Li
Takayasu's arteritis (TA) is a rare, idiopathic, chronic inflammatory disease associated with cell-mediated inflammation and involving predominantly the aorta and its primary branches. TA results in stenosis, occlusion or aneurysmal degeneration of large arteries pathologically. However, the incidence of dissection in arteries is low. As one of the primary causes of aortic dissection-associated ischemic stroke in young adults, only a limited number of TA cases presenting with aortic dissection have been published to date...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104941/dacron-graft-aneurysm-with-dissection
#2
Asik Ali Mohamed Ali, Praveen Sharma, Rujuta N Rege, Saveetha Rajesh, Kulasekaran Nadhamuni
Dacron grafts have been used as a conduit for large caliber arteries for many years successfully. However, these grafts can undergo complications such as aneurysm formation, rupture, and failure. Evaluation of these complications are of paramount importance because of its tendency to rupture and cause death. Imaging plays an important role in identifying and monitoring of these complications, and also provides a road map to the vascular surgeons for early intervention and revascularization.
October 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28104636/fred-flow-diverter-a-study-on-safety-and-efficacy-in-a-consecutive-group-of-50-patients
#3
H Luecking, T Engelhorn, S Lang, P Goelitz, S Kloska, K Roessler, A Doerfler
BACKGROUND AND PURPOSE: Endovascular flow diverters are increasingly used for the treatment of cerebral aneurysms. We assessed the safety and efficacy of the Flow-Redirection Endoluminal Device (FRED) in a consecutive series of 50 patients. MATERIALS AND METHODS: Inclusion criteria were wide-neck, blister-like, or fusiform/dissecting aneurysms independent of size, treated with the FRED between February 2014 and May 2015. Assessment criteria were aneurysm occlusion, manifest ischemic stroke, bleeding, or death...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28102592/six-uneventful-pregnancy-outcomes-in-an-extended-vascular-ehlers-danlos-syndrome-family
#4
Annette F Baas, Wilko Spiering, Frans L Moll, Lieve Page-Christiaens, Ingrid C M Beenakkers, Dennis Dooijes, Evert-Jan P A Vonken, Jasper J van der Smagt, Nine V Knoers, Steven V Koenen, Joost A van Herwaarden, Gertjan Tj Sieswerda
Vascular Ehlers-Danlos Syndrome (vEDS) is caused by heterozygous mutations in COL3A1 and is characterized by fragile vasculature and hollow organs, with a high risk of catastrophic events at a young age. During pregnancy and delivery, maternal mortality rates up until 25% have been reported. However, recent pedigree analysis reported a substantial lower pregnancy-related mortality rate of 4.9%. Here, we describe an extended vEDS family with multiple uneventful pregnancy outcomes. In the proband, a 37-year-old woman, DNA-analysis because of an asymptomatic iliac artery dissection revealed a pathogenic mutation in COL3A1 (c...
February 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28102102/impact-of-thoracic-endovascular-aortic-repair-on-pulsatile-circumferential-and-longitudinal-strain-in-patients-with-aneurysm
#5
Foeke J H Nauta, Guido H W van Bogerijen, Chiara Trentin, Michele Conti, Ferdinando Auricchio, Frans L Moll, Joost A van Herwaarden, Santi Trimarchi
PURPOSE: To quantify both pulsatile longitudinal and circumferential aortic strains before and after thoracic endovascular aortic repair (TEVAR), potentially clarifying TEVAR-related complications. METHODS: This retrospective study assessed the impact of TEVAR on pulsatile aortic strains through custom developed software and cardiac-gated computed tomography imaging of 8 thoracic aneurysm patients (mean age 71.0±8.2 years; 6 men) performed before TEVAR and during follow-up (median 0...
January 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28099082/therapeutics-targeting-drivers-of-thoracic-aortic-aneurysms-and-acute-aortic-dissections-insights-from-predisposing-genes-and-mouse-models
#6
Dianna M Milewicz, Siddharth K Prakash, Francesco Ramirez
Thoracic aortic diseases, including aneurysms and dissections of the thoracic aorta, are a major cause of morbidity and mortality. Risk factors for thoracic aortic disease include increased hemodynamic forces on the ascending aorta, typically due to poorly controlled hypertension, and heritable genetic variants. The altered genes predisposing to thoracic aortic disease either disrupt smooth muscle cell (SMC) contraction or adherence to an impaired extracellular matrix, or decrease canonical transforming growth factor beta (TGF-β) signaling...
January 14, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28097190/chronic-type-a-aortic-dissection-and-giant-aortic-root-aneurysm-after-aortic-valve-replacement
#7
Andrés Enríquez Puga, Sara Castaño Rodríguez, Blanca Mateos Pañero, Beatriz Castaño Moreira, Luis Fernando López Almodóvar
We describe the case of a 61-year-old male with a giant aortic root aneurysm associated with chronic aortic Type A dissection. The patient had been operated on 16 years before due to aortic annuloectasia with mechanical valve replacement. The patient underwent revision aortic surgery with a Bentall-De Bono operation with Svensson modification, using a #21 On-X Valsalva mechanical valve conduit. The postoperative course was uneventful.
June 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28097184/kif6-719arg-genetic-variant-and-risk-for-thoracic-aortic-dissection
#8
Olga A Iakoubova, Carmen H Tong, Joseph Catanese, Charles M Rowland, May M Luke, Maryann Tranquilli, John A Elefteriades
BACKGROUND: Carriers of the 719Arg variant in KIF6, compared with noncarriers, have been reported to be at greater risk for coronary heart disease (CHD) in six prospective studies. Because CHD, thoracic aortic dissection, and nondissection thoracic aortic aneurysm share some risk factors and aspects of pathophysiology, we investigated whether carriers of the 719Arg variant also have greater odds of thoracic aortic dissection or nondissected thoracic aortic aneurysm than noncarriers. METHODS: We genotyped 140 thoracic aortic dissection cases, 497 nondissection thoracic aortic aneurysm cases, and 275 disease-free controls collected in the United States, Hungary, and Greece and investigated the association between KIF6 719Arg carrier status and thoracic aortic dissection, and between KIF6 719Arg carrier status and nondissection thoracic aortic aneurysm, using logistic regression models adjusted for age, sex, hypertension, smoking, and country...
June 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28095402/a-general-shear-dependent-model-for-thrombus-formation
#9
Alireza Yazdani, He Li, Jay D Humphrey, George Em Karniadakis
Modeling the transport, activation, and adhesion of platelets is crucial in predicting thrombus formation and growth following a thrombotic event in normal or pathological conditions. We propose a shear-dependent platelet adhesive model based on the Morse potential that is calibrated by existing in vivo and in vitro experimental data and can be used over a wide range of flow shear rates ([Formula: see text]). We introduce an Eulerian-Lagrangian model where hemodynamics is solved on a fixed Eulerian grid, while platelets are tracked using a Lagrangian framework...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28094152/use-of-3d-printer-technology-to-facilitate-surgical-correction-of-a-complex-vascular-anomaly-with-esophageal-entrapment-in-a-dog
#10
A Dundie, G Hayes, P Scrivani, L Campoy, D Fletcher, K Ash, E Oxford, N S Moïse
A 10 week old female intact Staffordshire terrier was presented with a total of five congenital cardio-thoracic vascular anomalies consisting of a patent ductus arteriosus (PDA) with an aneurysmic dilation, pulmonic stenosis, persistent right aortic arch, aberrant left subclavian artery and persistent left cranial vena cava. These abnormalities were identified with a combination of echocardiogram and computed tomography angiography (CTA). The abnormalities were associated with esophageal entrapment, regurgitation, and volume overload of the left heart with left atrial and ventricular enlargement...
January 13, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28094007/obtaining-the-biomechanical-behavior-of-ascending-aortic-aneurysm-via-the-use-of-novel-speckle-tracking-echocardiography
#11
Mohammed Alreshidan, Nastaran Shahmansouri, Jennifer Chung, Vynka Lash, Alexander Emmott, Richard L Leask, Kevin Lachapelle
INTRODUCTION: Ex vivo measurement of ascending aortic biomechanical properties may help understand the risk for rupture or dissection of dilated ascending aortas. A validated in vivo method that can predict aortic biomechanics does not exist. Speckle tracking transesophageal echocardiography (TEE) has been used to measure ventricular stiffness; we sought to determine whether speckle TEE could be adapted to estimate aortic stiffness in vivo and compare these findings with those obtained by ex vivo tissue measurements...
December 20, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28088517/osborne-mendel-rats-simultaneously-develop-cardiac-and-renal-dysfunction-left-atrial-thrombosis-peripheral-artery-occlusion-and-ascending-aortic-dissection
#12
Makoto Asahina, Hideki Matsumoto, Yoshitaka Yasuhara, Noriko Suzuki, Ritsuko Takami, Michiyasu Takeyama, Ryuichi Tozawa
Although chronic kidney disease (CKD) is strongly associated with onsets of cardiovascular disease (CVD), the pathogenic mechanism between these diseases has not been fully understood. To develop and validate new therapeutic strategies for this complication, appropriate experimental models that reflect the complexity of the underlying pathophysiology are needed. The Osborne-Mendel (OM) rat was identified as an atherosclerosis-prone and a premature-death rat strain among 16 inbred rat strains when fed high-cholesterol containing diet...
January 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28087915/-microvascular-decompression-for-hemifacial-spasm-induced-by-vertebral-artery-dissecting-aneurysm-one-case-report
#13
Changjiang Ou, Shenghu Wang, Yili Chen, Jun Mo, Xuequn Zhao
A 61-year-old female presented with 4 years history of left-sided hemifacial spasm. Head MRI and angiography indicated left vertebral artery dissecting aneurysm which compressed ipsilateral cranial nerves Ⅶ and Ⅷ. Microvascular decompression was performed. The dissecting aneurysm was pushed apart and the distal part of the parent artery was adhered to the dura on the petrosum. The compressed nerves were totally decompressed. The symptom of facial spasm was completely resolved immediately after surgery and did not recur during 6 months of follow up...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28087823/prognosis-of-carotid-dissecting-aneurysms-results-from-cadiss-and-a-systematic-review
#14
Susanna C Larsson, Alice King, Jeremy Madigan, Christopher Levi, John W Norris, Hugh S Markus
OBJECTIVE: To determine the natural history of dissecting aneurysm (DA) and whether DA is associated with an increased recurrent stroke risk and whether type of antithrombotic drugs (antiplatelets vs anticoagulants) modifies the persistence or development of DA. METHODS: We included 264 patients with extracranial cervical artery dissection (CAD) from the Cervical Artery Dissection in Stroke Study (CADISS), a multicenter prospective study that compared antiplatelet with anticoagulation therapy...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28087184/clinical-characteristics-of-ruptured-distal-middle-cerebral-artery-aneurysms-review-of-the-literature
#15
REVIEW
Keiji Tsutsumi, Tetsuyoshi Horiuchi, Alhusain Nagm, Yasuyuki Toba, Kazuhiro Hongo
Middle cerebral artery (MCA) aneurysms usually arise at the primary MCA bifurcation or trifurcation. Distal MCA aneurysms are rarely considered as sources of aneurysmal subarachnoid hemorrhage (SAH). It has been reported that ruptured distal MCA aneurysms are associated with head trauma, neoplastic emboli, arterial dissection, or bacterial infection. We experienced five cases of ruptured distal MCA aneurysms and evaluated their clinical characteristics. Retrospective analysis of aneurysmal SAH at Kobayashi Neurosurgical Neurological Hospital was performed from January, 2004 to December, 2014...
January 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28076621/experimental-model-for-sutureless-proximal-anastomosis-by-the-viabahn-open-revascularization-technique-vortec
#16
Lucas Marcelo Dias Freire, Giuliana Biasi Gobbi, Inácio Maria Dal Fabbro, Fábio Hüsemann Menezes
Introduction: In the treatment of complex aneurysms, debranching is an extra-anatomical revascularization of visceral arteries followed by endograft coverage of the thoracoabdominal aorta. It eliminates the need for a thoracotomy and aortic clamping, but requires the performance of several technically demanding visceral anastomosis. In 2008, Lachat described visceral revascularization with the use of a sutureless distal anastomosis, performed by the telescoping of an endograft in the visceral branch, named VORTEC (Viabahn Open Revascularization TEChnique)...
November 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#17
Sayf Al-Katib, Monisha Shetty, Syed Mohammad A Jafri, Syed Zafar H Jafri
A wide range of clinically important anatomic variants and pathologic conditions may affect the renal vasculature, and radiologists have a pivotal role in the diagnosis and management of these processes. Because many of these entities may not be suspected clinically, renal artery and vein assessment is an essential application of all imaging modalities. An understanding of the normal vascular anatomy is essential for recognizing clinically important anatomic variants. An understanding of the protocols used to optimize imaging modalities also is necessary...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28069880/repair-of-a-bowel-containing-scrotal-hernia-with-incarceration-contributed-by-femorofemoral-bypass-graft
#18
Gaurav Sharma, Jonathan A Schouten, Kamal M F Itani
The rising use of endovascular techniques utilizing femoral artery access may increase the frequency with which surgeons face the challenge of hernia repair in reoperative groins-which may or may not include a vascular graft. We present a case where a vascular graft contributed to an acute presentation and complicated dissection, and review the literature. A 67-year-old man who had undergone prior endovascular aneurysm repair via open bilateral femoral artery access and concomitant prosthetic femorofemoral bypass, presented with an incarcerated, scrotal inguinal hernia...
January 8, 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28067899/nitric-oxide-mediates-aortic-disease-in-mice-deficient-in-the-metalloprotease-adamts1-and-in-a-mouse-model-of-marfan-syndrome
#19
Jorge Oller, Nerea Méndez-Barbero, E Josue Ruiz, Silvia Villahoz, Marjolijn Renard, Lizet I Canelas, Ana M Briones, Rut Alberca, Noelia Lozano-Vidal, María A Hurlé, Dianna Milewicz, Arturo Evangelista, Mercedes Salaices, J Francisco Nistal, Luis Jesús Jiménez-Borreguero, Julie De Backer, Miguel R Campanero, Juan Miguel Redondo
Heritable thoracic aortic aneurysms and dissections (TAAD), including Marfan syndrome (MFS), currently lack a cure, and causative mutations have been identified for only a fraction of affected families. Here we identify the metalloproteinase ADAMTS1 and inducible nitric oxide synthase (NOS2) as therapeutic targets in individuals with TAAD. We show that Adamts1 is a major mediator of vascular homeostasis, given that genetic haploinsufficiency of Adamts1 in mice causes TAAD similar to MFS. Aortic nitric oxide and Nos2 levels were higher in Adamts1-deficient mice and in a mouse model of MFS (hereafter referred to as MFS mice), and Nos2 inactivation protected both types of mice from aortic pathology...
January 9, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28065489/chronobiology-of-acute-aortic-dissection-in-the-marfan-syndrome-from-the-national-registry-of-genetically-triggered-thoracic-aortic-aneurysms-and-cardiovascular-conditions-and-the-international-registry-of-acute-aortic-dissection
#20
Hasan K Siddiqi, Steven N Luminais, Dan Montgomery, Eduardo Bossone, Harry Dietz, Arturo Evangelista, Eric Isselbacher, Scott LeMaire, Roberto Manfredini, Dianna Milewicz, Christoph A Nienaber, Mary Roman, Udo Sechtem, Michael Silberbach, Kim A Eagle, Reed E Pyeritz
Marfan syndrome (MFS) is an autosomal dominant connective tissue disease associated with acute aortic dissection (AAD). We used 2 large registries that include patients with MFS to investigate possible trends in the chronobiology of AAD in MFS. We queried the International Registry of Acute Aortic Dissection (IRAD) and the Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions (GenTAC) registry to extract data on all patients with MFS who had suffered an AAD. The group included 257 patients with MFS who suffered an AAD from 1980 to 2012...
December 2, 2016: American Journal of Cardiology
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