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Rupture aortic aneurysm

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https://www.readbyqxmd.com/read/28448408/contained-rupture-of-an-abdominal-aortic-aneurysm-with-extensive-vertebral-body-and-retroperitoneal-space-destruction
#1
Sean T Walker, Iraklis I Pipinos, Jason M Johanning, Christopher J Vargo
Chronic contained rupture of an abdominal aortic aneurysm with vertebral body erosion most commonly presents with symptoms of low back pain. Although not well known, vertebral body erosion or destruction may be seen in up to 25% of patients with sealed or contained rupture of an abdominal aortic aneurysm. This appearance on cross-sectional imaging may mimic a malignant or infectious process. Although these cases can present a diagnostic challenge, published cases of chronic contained rupture of an abdominal aortic aneurysm with vertebral body erosion demonstrate clinical and imaging similarities that, when recognized, can assist in diagnosis...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28447404/potential-biomechanical-roles-of-risk-factors-in-the-evolution-of-thrombus-laden-abdominal-aortic-aneurysms
#2
Lana Virag, John S Wilson, Jay D Humphrey, Igor Karšaj
Abdominal aortic aneurysms (AAAs) typically harbour an intraluminal thrombus (ILT), yet most prior computational models neglect biochemomechanical effects of thrombus on lesion evolution. We recently proposed a growth and remodelling model of thrombus-laden AAAs that introduced a number of new constitutive relations and associated model parameters. Because values of several of these parameters have yet to be elucidated by clinical data, and could vary significantly from patient to patient, the aim of this study was to investigate the possible extent to which these parameters influence AAA evolution...
April 26, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28447279/multi-modality-molecular-imaging-of-aortic-aneurysms
#3
Brian J Malm, Mehran M Sadeghi
Aneurysms of the thoracic and abdominal aorta are common and can be associated with significant morbidity and mortality when complications, including dissection, rupture, or thrombosis, occur. Current approaches to diagnosis and risk stratification rely on measurements of aneurysm size and rate of growth, often using various imaging modalities, which may be suboptimal in identifying patients at the highest and lowest risk of complications. Targeting the biological processes underlying aneurysm formation and expansion with molecular imaging offers an exciting opportunity to characterize aortic aneurysms beyond size and address current gaps in our approach to diagnosis and treatment...
April 26, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28445318/renal-failure-caused-by-a-partly-calcified-aortic-aneurysm-in-a-patient-with-dabigatran-therapy-a-case-report
#4
Philipp Jud, Thomas Gary, Kurt Tiesenhausen, Rupert Portugaller, Gerald Hackl, Marianne Brodmann
RATIONALE: Abdominal aortic aneurysms (AAAs) are mostly asymptomatic. If aortic aneurysms become symptomatic, complications include peripheral embolization, acute aortic occlusion, and aortic rupture. However, there are also unusual complications caused by aortic aneurysms. PATIENT CONCERNS: An 87-old male with dabigatran therapy presented with newly developed melena and acute renal failure. Radiological imaging revealed an AAA with thrombotic and calcified deposits which affected the renal arteries...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444478/the-association-between-geometry-and-wall-stress-in-emergently-repaired-abdominal-aortic-aneurysms
#5
Sathyajeeth S Chauhan, Carlos A Gutierrez, Mirunalini Thirugnanasambandam, Victor De Oliveira, Satish C Muluk, Mark K Eskandari, Ender A Finol
Abdominal aortic aneurysm (AAA) is a prevalent cardiovascular disease characterized by the focal dilation of the aorta, which supplies blood to all the organs and tissues in the systemic circulation. With the AAA increasing in diameter over time, the risk of aneurysm rupture is generally associated with the size of the aneurysm. If diagnosed on time, intervention is recommended to prevent AAA rupture. The criterion to decide on surgical intervention is determined by measuring the maximum diameter of the aneurysm relative to the critical value of 5...
April 25, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28436113/using-predictions-from-a-joint-model-for-longitudinal-and-survival-data-to-inform-the-optimal-time-of-intervention-in-an-abdominal-aortic-aneurysm-screening-programme
#6
Michael J Sweeting
Joint models of longitudinal and survival data can be used to predict the risk of a future event occurring based on the evolution of an endogenous biomarker measured repeatedly over time. This has led naturally to the use of dynamic predictions that update each time a new longitudinal measurement is provided. In this paper, we show how such predictions can be utilised within a fuller decision modelling framework, in particular to allow planning of future interventions for patients under a 'watchful waiting' care pathway...
April 24, 2017: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/28431866/circulating-micrornas-signature-correlates-with-positive-18-f-fluorodeoxyglucose-positron-emission-tomography-in-patients-with-abdominal-aortic-aneurysm
#7
Audrey Courtois, Betty Nusgens, Nancy Garbacki, Roland Hustinx, Pierre Gomez, Jean-Olivier Defraigne, Alain C Colige, Natzi Sakalihasan
BACKGROUND: Prediction of abdominal aortic aneurysm (AAA) rupture is a challenging issue. Small noncoding microRNAs (miRNAs) are potent regulators of gene expression and are considered as valuable circulating biomarkers. Recently, [(18)F]fluorodeoxyglucose (FDG) uptake detected by positron emission tomography (PET) in AAA was correlated with cellular and molecular alterations involved in wall instability and its potential rupture. Our study aimed at identifying circulating miRNAs correlated with a positive PET that could help discriminate patients at high risk of rupture...
April 18, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28431107/double-fixation-for-abdominal-aortic-aneurysm-repair-using-afx-body-and-endurant-proximal-aortic-cuff-mid-term-results
#8
Miltiadis I Matsagkas, George Kouvelos, Konstantinos Spanos, Athanasios Athanasoulas, Athanasios Giannoukas
Our goal was to evaluate the use of an AFX main body combined with an Endurant proximal aortic cuff to treat selected patients with an abdominal aortic aneurysm (AAA) associated with anatomical challenges, such as a small distal aortic diameter and a hostile aortic neck. A retrospective analysis of prospectively collected data from 2 vascular institutions identified 14 elective patients with an AAA (all men, 73.5 ± 5.1 years) treated with the AFX main body combined with an Endurant proximal aortic cuff...
April 17, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28428526/-strategy-of-thoracic-endovascular-aortic-repair-for-uncomplicated-type-b-aortic-dissection-in-subacute-and-chronic-phase-interval-from-onset-and-maximum-diameter
#9
Masatoshi Sunada, Kyohei Ueno, Rie Kageyama, Satoru Maeba, Hirofumi Midorikawa, Megumu Kanno
We classified 59 patients who underwent thoracic endovascular aortic repair for uncomplicated type B aortic dissection from April 2008 to April 2016 into 3 groups based on time from onset and maximum aortic diameter:SA (2weeks to 1 year since onset;n=29), C (>1 year since onset;n=17), and D(maximum aneurysm size≥60 mm;n=13). We used the Kaplan-Meier method tso analyze survival, major adverse cardiovascular event and the need for additional treatment. There was no significant difference in outcomes between the SA and C groups (p=0...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28420827/relaxin-and-matrix-metalloproteinase-9-in-angiotensin-ii-induced-abdominal-aortic-aneurysms
#10
Deborah A Howatt, Maya Dajee, Xiaojie Xie, Jessica Moorleghen, Debra L Rateri, Anju Balakrishnan, Valdeci Da Cunha, Douglas G Johns, David E Gutstein, Alan Daugherty, Hong Lu
BACKGROUND: This study determined whether relaxin or matrix metalloproteinase (MMP)-9 influences angiotensin II (AngII)-induced abdominal aortic aneurysms (AAA).Methods and Results:Male C57BL/6 or apolipoprotein E(-/-)mice were infused with AngII with or without relaxin. Relaxin did not influence AngII-induced AAA in either mouse strain. Infusion of AngII reduced, but relaxin increased, MMP-9 mRNA in macrophages. We then determined the effects of MMP-9 deficiency on AAA in apolipoprotein E(-/-)mice...
April 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28416930/what-are-the-prevalence-of-abdominal-aortic-aneurysm-in-patients-with-chronic-obstructive-pulmonary-diseases-and-the-characteristics-of-these-patients
#11
Ulku Aka Akturk, Nagihan Durmus Kocak, Suleyman Akturk, Mert Dumantepe, Aysun Sengul, Mehmet Arif Akcay, Makbule Ozlem Akbay, Feyyaz Kabadayi, Dilek Ernam
OBJECTIVE: To determine the prevalence of abdominal aortic aneurysm (AAA) in patients with chronic obstructive pulmonary disease (COPD) and to assess the characteristics of these patients. MATERIALS AND METHODS: Stable COPD patients (age, >40 years) were included in the study between January 2014 and June 2014. Patients with acute exacerbations and a previous lung resection were excluded. Data regarding demographic characteristics were recorded. The modified Medical Research Council (mMRC) dyspnea scale was used to assess the severity of breathlessness...
February 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28416191/assessment-of-international-outcomes-of-intact-abdominal-aortic-aneurysm-repair-over-9-years
#12
J Budtz-Lilly, M Venermo, S Debus, C-A Behrendt, M Altreuther, B Beiles, Z Szeberin, N Eldrup, G Danielsson, I Thomson, P Wigger, M Björck, I Loftus, K Mani
BACKGROUND: Case mix and outcomes of complex surgical procedures vary over time and between regions. This study analyses peri-operative mortality after intact abdominal aortic aneurysm (AAA) repair in 11 countries over 9 years. METHODS: Data on primary AAA repair from vascular surgery registries in 11 countries for the years 2005-2009 and 2010-2013 were analysed. Multivariate adjusted logistic regression analyses were carried out to adjust for variations in case mix...
April 13, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28412911/pharmacological-therapy-of-abdominal-aortic-aneurysm-an-update
#13
Yi-Dong Wang, Zhen-Jie Liu, Jun Ren, Mei-Xiang Xiang
Abdominal aortic aneurysm (AAA), a progressive segmental abdominal aortic dilation, is associated with high mortality. AAA is characterized by inflammation, smooth muscle cell (SMC) depletion and extracellular matrix (ECM) degradation. Surgical intervention and endovascular therapy are recommended to prevent rupture of large AAAs. Unfortunately, there is no reliable pharmacological agent available to limit AAA expansion. In the past decades, extensive investigations and a body of ongoing clinical trials aimed at defining potent treatments to inhibit and even regress AAA growth...
April 13, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28411526/endovascular-repair-of-a-ruptured-thoracic-aortic-dissection-with-a-right-sided-aortic-arch-a-case-report
#14
Jeremy L Irvan, James R Elmore, Sarah L Flora, Evan J Ryer
BACKGROUND: Emergency treatment of complex aortic pathology is challenging in the setting of a right-sided aortic arch. We report the successful treatment of a ruptured thoracic aortic aneurysm (TAA) in the setting of a Stanford type B aortic dissection (TBAD) and right-sided aortic arch. PRESENTATION OF CASE: The patient is a 66-year-old male with chronic kidney disease (CKD) admitted with right sided chest pain and hypotension. Computed tomography angiography (CTA) revealed a 5cm ruptured TAA in the setting of a TBAD and right-sided aortic arch...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28410259/central-venous-catheter-placement-in-the-left-internal-jugular-vein-complicated-by-perforation-of-the-left-brachiocephalic-vein-and-massive-hemothorax-a-case-report
#15
Lindsay R Wetzel, Priyesh R Patel, Nicholas L Pesa
An elderly male presented for emergent repair of a ruptured abdominal aortic aneurysm. For anticipated volume resuscitation, vasopressor administration, and hemodynamic monitoring, a large-bore central venous catheter was placed in the left internal jugular vein under ultrasound guidance before surgical incision. Initially, there were no readily apparent signs of venous perforation. However, a massive left hemothorax developed because of perforation of the brachiocephalic vein and violation of the pleural space...
April 13, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28406184/monocytes-and-macrophages-in-abdominal-aortic-aneurysm
#16
REVIEW
Juliette Raffort, Fabien Lareyre, Marc Clément, Réda Hassen-Khodja, Giulia Chinetti, Ziad Mallat
Abdominal aortic aneurysm (AAA) is a life-threatening disease associated with high morbidity, and high mortality in the event of aortic rupture. Major advances in open surgical and endovascular repair of AAA have been achieved during the past 2 decades. However, drug-based therapies are still lacking, highlighting a real need for better understanding of the molecular and cellular mechanisms involved in AAA formation and progression. The main pathological features of AAA include extracellular matrix remodelling associated with degeneration and loss of vascular smooth muscle cells and accumulation and activation of inflammatory cells...
April 13, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28405066/relation-of-left-ventricular-free-wall-rupture-and-or-aneurysm-with-acute-myocardial-infarction-in-patients-with-aortic-stenosis
#17
REVIEW
Irtiza N Sheikh, William C Roberts
This minireview describes 6 previously reported patients with left ventricular free wall rupture and/or aneurysm complicating acute myocardial infarction (AMI) in patients with aortic stenosis. The findings suggest that left ventricular rupture and/or aneurysm is more frequent in patients with AMI associated with aortic stenosis than in patients with AMI unassociated with aortic stenosis, presumably because of retained elevation of the left ventricular peak systolic pressure after the appearance of the AMI.
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28400216/high-mortality-rates-after-both-open-surgical-and-endovascular-thoracic-aortic-interventions-in-patients-with-end-stage-renal-disease
#18
Nathan L Liang, Theodore H Yuo, Georges E Al-Khoury, Eric S Hager, Michel S Makaroun, Michael J Singh
BACKGROUND: Morbidity and mortality have improved with the evolution of endovascular techniques (thoracic endovascular aortic repair [TEVAR]) for thoracic aortic disease, but results after aortic intervention in patients with end-stage renal disease (ESRD) remain unclear. The objective of this study was to evaluate outcomes of open and endovascular descending thoracic aortic repair in dialysis-dependent patients. METHODS: We identified 352 patients with ESRD on dialysis undergoing open repair (n = 136) or TEVAR (n = 216) of the thoracic aorta from 2005 to 2008 using the United States Renal Data System database...
April 8, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28397952/aortic-valve-prolapse-misdiagnosed-as-aortic-sinus-aneurysm-in-patients-with-ventricular-septal-defect-analysis-of-the-echocardiographic-findings
#19
Guobing Hu, Xiangming Zhu, Fang Song
To retrospectively analyzed the preoperative echocardiographic findings of 9 patients with doubly committed ventricular septal defect (VSD) associated with aortic valve prolapse and to summarize the reasons for misdiagnosis. Methods: This retrospective study was conducted in Yijishan Hospital, Wannan, Anhui, Chinabetween June 2005 and May 2015. Using transthoracic echocardiography (TTE), 92 patients were diagnosed with doubly committed VSD associated with rupture of an aortic sinus aneurysm. The operative findings proved to be in accordance with the echocardiographic findings in 83 patients...
April 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28395784/acute-mesenteric-ischemia-part-i-incidence-etiologies-and-how-to-improve-early-diagnosis
#20
REVIEW
Jussi M Kärkkäinen, Stefan Acosta
Acute mesenteric ischemia (AMI) is generally thought to be a rare disease, but in fact, it is more common cause of acute abdomen than appendicitis or ruptured abdominal aortic aneurysm in patients over 75 years of age. In occlusive AMI, surgical treatment without revascularization is associated with as high as 80% overall mortality. It has been shown that early diagnosis with contrast-enhanced computed tomography and revascularization can reduce the overall mortality in AMI by up to 50%. However, only a minority of patients with AMI are being treated actively with revascularization in the United States, and the situation is very likely similar in Europe as well...
February 2017: Best Practice & Research. Clinical Gastroenterology
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