keyword
MENU ▼
Read by QxMD icon Read
search

Aorta aneurysm

keyword
https://www.readbyqxmd.com/read/28550176/mechanical-behavior-and-matrisome-gene-expression-in-aneurysm-prone-thoracic-aorta-of-newborn-lysyl-oxidase-knockout-mice
#1
Marius Catalin Staiculescu, Jungsil Kim, Robert P Mecham, Jessica Wagenseil
Mutations in lysyl oxidase (LOX) are associated with thoracic aortic aneurysm and dissection (TAAD). Mice that do not express Lox (Lox(-/-)) die soon after birth and have 60% and 40% reductions in elastin- and collagen-specific crosslinks, respectively. LOX inactivation could also change the expression of secreted factors, structural matrix, and matrix-associated proteins that constitute the aortic matrisome. We hypothesize that the absence of Lox will change the mechanical behavior of the aortic wall due to reduced elastin and collagen crosslinking and alter the expression levels of matrisome and smooth muscle cell (SMC) genes in a vascular location-specific manner...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28549956/serum-high-sensitive-c-reactive-protein-hscrp-level-and-crp-genetic-polymorphisms-are-associated-with-abdominal-aortic-aneurysm
#2
Zuo Shangwei, Wei Yingqi, Xiong Jiang, Wu Zhongyin, Juan Juan, Chen Dafang, Hu Yonghua, Guo Wei
BACKGROUND: Abdominal aortic aneurysm (AAA) development involves an inflammatory process with a potential genetic background. C-reactive protein (CRP) is an acute phase protein and was elevated in patients with AAA. The aim of this study was to investigate the association among serum high-sensitive CRP (hsCRP) concentration, its CRP genetic polymorphisms and AAA. METHODS: Serum hsCRP concentrations and abdominal aorta diameters were measured, correlation analysis between them were performed in 155 unrelated participants with AAA and 310 non-AAA controls...
May 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28548204/endovascular-treatment-for-ruptured-abdominal-aortic-aneurysm
#3
REVIEW
Stephen Badger, Rachel Forster, Paul H Blair, Peter Ellis, Frank Kee, Denis W Harkin
BACKGROUND: An abdominal aortic aneurysm (AAA) (pathological enlargement of the aorta) is a condition that can occur as a person ages. It is most commonly seen in men older than 65 years of age. Progressive aneurysm enlargement can lead to rupture and massive internal bleeding, which is fatal unless timely repair can be achieved. Despite improvements in perioperative care, mortality remains high (approximately 50%) after conventional open surgical repair. Endovascular aneurysm repair (EVAR), a minimally invasive technique, has been shown to reduce early morbidity and mortality as compared to conventional open surgery for planned AAA repair...
May 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28547126/endovascular-management-of-native-postcoarctation-thoracic-aortic-aneurysms
#4
Ziheng Wu, Xiangtao Zheng, Xin Fang, Yangyan He, Donglin Li, Chengfei Zheng, Hongkun Zhang
PURPOSE: Postcoarctation thoracic aortic aneurysm formation is one of the most serious complications for coarctation of aorta. Open surgery to repair these aneurysms is associated with high morbidity and mortality. Endovascular therapy is an attractive alternative to open surgery. We have studied the efficacy and safety of endovascular therapy for postcoarctation thoracic aortic aneurysms, and will share our findings and experience through this document. METHODS: The data was retrospectively collected on consecutive patients who were presented with postcoarctation thoracic aortic aneurysms at our medical center...
May 25, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28546046/on-the-use-of-geometric-modeling-to-predict-aortic-aneurysm-rupture
#5
Sruthi L Muluk, Pallavi D Muluk, Judy Shum, Ender A Finol
BACKGROUND: Currently, the risk of abdominal aortic aneurysm (AAA) rupture is determined using the maximal diameter (Dmax) of the aorta. We sought in this study to identify a set of CT-based geometric parameters that would better predict the risk of rupture than Dmax. METHODS: We obtained CT Scans from 180 patients (90 ruptured AAA, 90 elective AAA repair) and then used automated software to calculate 1-dimensional, 2-dimensional, and 3-dimensional geometric parameters for each AAA...
May 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28542808/ascending-aortic-rupture-through-a-penetrating-atherosclerotic-ulcer-a-rare-cause-of-sudden-unexpected-death
#6
Supawon Srettabunjong
Spontaneous rupture of the aorta through an atherosclerotic lesion without preexisting aortic aneurysm, dissection, or history of trauma is very rare. Without prompt aortic repair, all cases result in sudden death with a definitive diagnosis made only intraoperatively or during autopsy. The phenomenon has been uniformly found in individuals with hypertension. The author reports a sudden unexpected death caused by spontaneous rupture of the ascending aorta in a 57-year-old man with a history of hypertension...
May 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28540066/cine-cmr-partial-voxel-segmentation-demonstrates-increased-aortic-stiffness-among-patients-with-marfan-syndrome
#7
Parmanand Singh, Zaid Almarzooq, Noel C F Codell, Yi Wang, Mary J Roman, Richard B Devereux, Jonathan W Weinsaft
BACKGROUND: Standard cine-cardiac magnetic resonance (CMR) imaging is commonly used to evaluate cardiac structure, geometry and function. Prior studies have shown that automated segmentation via partial voxel interpolation (PVI) accurately quantifies phantom-based cardiac chamber volumes and necropsy left ventricular myocardial mass. Despite this, the applicability and usefulness of PVI in the determination of physiologic parameters of the aorta such as aortic stiffness has yet to be investigated...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28536892/patient-specific-stress-analyses-in-the-ascending-thoracic-aorta-using-a-finite-element-implementation-of-the-constrained-mixture-theory
#8
S Jamaleddin Mousavi, Stéphane Avril
It is now a rather common approach to perform patient-specific stress analyses of arterial walls using finite-element models reconstructed from gated medical images. However, this requires to compute for every Gauss point the deformation gradient between the current configuration and a stress-free reference configuration. It is technically difficult to define such a reference configuration, and there is actually no guarantee that a stress-free configuration is physically attainable due to the presence of internal stresses in unloaded soft tissues...
May 23, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28533581/bicuspid-aortic-valve-an-unusual-cause-of-aneurysm-of-left-coronary-sinus-of-valsalva
#9
Euden Bhutia, Dinesh Kumar, Binoy Shankar, Shakti Pad Das, Sunil Kishore
Bicuspid aortic valve is traditionally considered an innocuous congenital anomaly. Due to a better and widespread availability of non-invasive imaging techniques, it has come to the fore that 30% of these cases develop complications, viz., valve abnormality (aortic regurgitation and stenosis), and aneurysm of aortic root and ascending aorta. Sinus of Valsalva aneurysm is an uncommon complication of bicuspid aortic valve and more so those arising from the left coronary sinus are the rarest. These complications generally occur in the third or fourth decade of life...
May 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28528280/aortic-involvement-in-relapsing-polychondritis
#10
Maëlle Le Besnerais, Laurent Arnaud, Jonathan Boutémy, Boris Bienvenu, Hervé Lévesque, Zahir Amoura, Isabelle Marie
OBJECTIVE: To assess prevalence of aortic involvement in relapsing polychondritis (RP) patients; to evaluate clinical features and long-term outcome of RP patients exhibiting aortitis, aortic ectasia and/or aneurysm. METHODS: 172 RP patients underwent aortic computed tomography (CT)-scan; they were seen in 3 medical centers. RESULTS: 11 patients (6.4%) had aortic involvement, occurring within a median time of 2 years after RP diagnosis. CT-scan showed isolated aortitis (n=2); the 9 other patients exhibited: aortitis and aortic aneurysm (n=2) or ectasia (n=1), isolated aortic aneurysm (n=4) or ectasia (n=2); aortic localizations were as follows: thoracic (n=6), abdominal (n=2), thoracic and abdominal (n=4) aorta...
May 17, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28528055/pseudoachalasia-secondary-to-thoracic-aortic-aneurysm
#11
Jorind Beqari, Anthony Lembo, Jon Critchlow, Allen Hamden, Michael S Kent
Pseudoachalasia is known to be associated with malignancy involving the gastroesophageal junction and after esophageal operations. We present a case of pseudoachalasia secondary to an aneurysm of the descending thoracic aorta and describe successful operative management.
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28528045/endovascular-fenestration-for-distal-aortic-sealing-after-frozen-elephant-trunk-with-thoraflex
#12
Randolph H L Wong, Peter S Y Yu, Micky W T Kwok, Simon C Y Chow, Jacky Y K Ho, Malcolm J Underwood, Simon C H Yu
We describe a case of total arch replacement with frozen elephant trunk for chronic type B aortic dissecting aneurysm, which resulted in inadvertent landing of the frozen elephant trunk into the false lumen. A radiofrequency puncture system-assisted controlled endovascular fenestration of the dissection flap was performed at the upper abdominal aorta and subsequent thoracic endovascular stenting, successfully redirecting the blood flow from the false to the true lumen. Our case illustrated a possible way to seal distal reentry in chronic type B aortic dissection...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527730/experiences-of-the-screening-process-and-the-diagnosis-abdominal-aortic-aneurysm-among-65-year-old-men-from-invitation-to-a-1-year-surveillance
#13
Monica Pettersson, Anders Hansson, John Brodersen, Christine Kumlien
The prevalence of abdominal aortic aneurysm (AAA) is reported to be 2.2%-8% among men >65 years. During recent years, screening programs have been developed to detect AAA, prevent ruptures, and thereby saving lives. Therefore, most men with the diagnosis are monitored conservatively with regular reviews. The objective of the study was to describe how men diagnosed with abdominal aortic aneurysm <55 mm discovered by screening experience the process and diagnosis from invitation to 1 year after screening...
June 2017: Journal of Vascular Nursing: Official Publication of the Society for Peripheral Vascular Nursing
https://www.readbyqxmd.com/read/28527353/mechanical-behavior-of-the-abdominal-aortic-aneurysm-assessed-by-biaxial-tests-in-the-rat-xenograft-model
#14
Louise Marais, Mustapha Zidi
This paper addresses the mechanical biaxial behavior of degraded arteries obtained by the rat xenograft model. For that, a pressure myograph was used to perform extension-inflation tests on abdominal aortic aneurysms (AAAs). Furthermore, residual stresses in the aneurismal wall were assessed by opening angle tests. Thus, the changes in mechanical behavior between native murine aortas, decellularized guinea pig aortas (the grafts) and degraded aortas (AAAs) were investigated. It was shown that decellularized and degraded aortas exhibited a different mechanical behavior than native murine aortas...
May 12, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28526040/catching-a-floating-thrombus-a-case-report-on-the-treatment-of-a-large-thrombus-in-the-ascending-aorta
#15
Gijs Eduard de Maat, Giorgio Vigano, Massimo Alessandro Mariani, Ehsan Natour
BACKGROUND: The ascending aorta is an uncommon site for non-infective thrombus. In non-aneurysmal and non-atherosclerotic vessels this condition becomes extremely rare, while it represents a source of potential cerebral and peripheral embolic events. Currently, there is no consensus in the guidelines on how to treat a free floating thrombus in ascending aorta, therefore we present our decision making process and therapeutic strategy. CASE PRESENTATION: A healthy 48-year-old man was hospital admitted with acute abdominal pain...
May 19, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28515742/the-use-of-intraoperative-epiaortic-ultrasonography-in-monitoring-patients-over-75-years-old-treated-with-aortic-valve-replacement
#16
Tomasz Niklewski, Michał Zembala, Dariusz Puszczewicz, Paweł Nadziakiewicz, Wojciech Karolak, Marian Zembala
INTRODUCTION: Epiaortic ultrasound scanning (EAS) extended the use of ultrasound to the intraoperative diagnosis of aortic pathology. Surgical palpation of the ascending aorta underestimates the presence and severity of atherosclerotic plaques. Epiaortic ultrasound scanning has been used as an adjunct to transesophageal echocardiography (TEE) or as a primary direct diagnostic tool for imaging the ascending aorta as well as the aortic arch, which gained prominence as part of a multipronged intraoperative strategy to reduce atherosclerotic emboli...
March 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28513189/transcatheter-aortic-valve-implantation-the-transaortic-approach
#17
Simon Cy Chow, Gary Sh Cheung, Alex Pw Lee, Eugene B Wu, Jacky Yk Ho, Micky Wt Kwok, Peter Sy Yu, Innes Yp Wan, Malcolm J Underwood, Randolph Hl Wong
Background Transcatheter aortic valve implantation has been established as a safe and effective treatment option for patients at high or prohibitive surgical risk. However, some patients may not be suitable for the transfemoral approach due to severe iliofemoral disease or aneurysmal disease of the thoracoabdominal aorta. The aim of this case series was to evaluate the feasibility and clinical outcomes of the transaortic approach. Methods From May 2015 to June 2016, 5 patients (mean age 78.4 ± 3.9 years) with severe symptomatic aortic stenosis underwent transaortic transcatheter aortic valve implantation after a heart team discussion...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28508064/fibulin-4-is-essential-for-maintaining-arterial-wall-integrity-in-conduit-but-not-muscular-arteries
#18
Carmen M Halabi, Thomas J Broekelmann, Michelle Lin, Vivian S Lee, Mon-Li Chu, Robert P Mecham
Homozygous or compound heterozygous mutations in fibulin-4 (FBLN4) lead to autosomal recessive cutis laxa type 1B (ARCL1B), a multisystem disorder characterized by significant cardiovascular abnormalities, including abnormal elastin assembly, arterial tortuosity, and aortic aneurysms. We sought to determine the consequences of a human disease-causing mutation in FBLN4 (E57K) on the cardiovascular system and vascular elastic fibers in a mouse model of ARCL1B. Fbln4(E57K/E57K) mice were hypertensive and developed arterial elongation, tortuosity, and ascending aortic aneurysms...
May 2017: Science Advances
https://www.readbyqxmd.com/read/28502074/causes-and-consequences-of-mesenteric-embolization-after-endovascular-aorto-iliac-intervention-a-nested-case-control-study
#19
Stefan Acosta, Jussi Kärkkäinen
BACKGROUND: Causes and consequences of mesenteric embolization after endovascular aorto-iliac procedures have not been studied adequately. METHODS: Consecutive patients with mesenteric embolization after endovascular aorto-iliac intervention between 2011 and 2015 (case-group, n = 9) were investigated and compared with age, gender and procedure-matched random controls (n = 36). RESULTS: Compared to the control group, a higher proportion of patients with mesenteric embolization were current smokers (89% vs...
May 14, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28501658/hybridizing-the-sandwich-and-chimney-techniques-in-the-endovascular-repair-of-coarctation-of-the-aortic-arch-and-postcoarctation-ectasia-concomitant-with-a-left-subclavian-artery-aneurysm
#20
Mingguang Zhang, Hao Nie, Xinyu Gui, Jiang Shao, Bao Liu, Yongjun Li, Changwei Liu, Yuehong Zheng
Coarctation of aorta is a rare congenital malformation and is usually accompanied by other cardiac or vascular lesions. In this case we describe a 51-year-old patient presented with coarctation of the aortic arch and postcoarctation ectasia concomitant with a left subclavian artery aneurysm. Endovascular therapy included the deployment of an inverted wedge-shaped covered stent inserted by a long "chimney" stent and another cylinder-covered stent, forming a "sandwich"-like configuration. The symptoms were alleviated after surgery, and no perioperative or stent-graft-related complications were observed at a 2-year follow-up...
May 10, 2017: Annals of Vascular Surgery
keyword
keyword
39062
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"