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Aortic dilatation

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https://www.readbyqxmd.com/read/29156355/biomechanical-evaluation-of-a-personalized-external-aortic-root-support-applied-in-the-ross-procedure
#1
Julie Vastmans, Heleen Fehervary, Peter Verbrugghe, Tom Verbelen, Emma Vanderveken, Jos Vander Sloten, Tom Treasure, Filip Rega, Nele Famaey
A commonly heard concern in the Ross procedure, where a diseased aortic valve is replaced by the patient's own pulmonary valve, is the possibility of pulmonary autograft dilatation. We performed a biomechanical investigation of the use of a personalized external aortic root support or exostent as a possibility for supporting the autograft. In ten sheep a short length of pulmonary artery was interposed in the descending aorta, serving as a simplified version of the Ross procedure. In seven of these cases, the autograft was supported by an external mesh or so-called exostent...
November 11, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29155949/pseudoaneurysm-rupture-after-acute-type-a-dissection-repair-possible-reaction-to-bioglue
#2
Toshiro Kobayashi, Hiroshi Kurazumi, Masafumi Sato, Hidenori Gohra
A 45-year-old man with acute Type A aortic dissection underwent the ascending aorta replacement with BioGlue (CryoLife Europa, Guildford, Surrey, UK) for anastomotic reinforcement. Postoperatively, he developed descending aortic dilation, a giant mediastinal cyst, Henoch-Schonlein purpura and an anastomotic-site pseudoaneurysm rupture. A BioGlue-induced inflammatory reaction was likely, according to a positive patch test (delayed allergic reaction).
October 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29155935/early-and-late-outcomes-of-open-repair-for-dissecting-aneurysms-of-the-descending-or-thoraco-abdominal-aorta
#3
Atsushi Omura, Kenji Minatoya, Jiro Matsuo, Yosuke Inoue, Yoshimasa Seike, Kyokun Uehara, Hiroaki Sasaki, Hitoshi Matsuda, Junjiro Kobayashi
OBJECTIVES: Although open repair is the standard surgical option for dissecting descending thoracic aneurysms (DTAs) and thoraco-abdominal aorta aneurysms (TAAAs), it remains a significant challenge with considerable perioperative morbidity and mortality. We retrospectively analysed early and late outcomes of open repair for these aortic aneurysms. METHODS: Early and late outcomes were investigated for 223 consecutive patients who underwent open repair for dissecting DTA or TAAA between January 2003 and December 2014 (mean age 55 ± 16 years)...
October 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29155740/creation-of-a-rodent-model-of-abdominal-aortic-aneurysm-by-blocking-adventitial-vasa-vasorum-perfusion
#4
Hiroki Tanaka, Naoki Unno, Tatsuro Yata, Hirona Kugo, Nobuhiro Zaima, Takeshi Sasaki, Tetsumei Urano
The adventitial vasa vasorum (VV) provides oxygen and nourishment to the aortic wall. Hypoxia in the aortic wall can cause enlarged abdominal aortic aneurysms (AAAs). This article introduces and describes a standard protocol used to induce AAAs through adventitial VV hypoperfusion created with a combination of polyurethane catheter insertion into the aortic lumen and suture ligation of the infrarenal abdominal aorta. The protocol involves the use of male rats weighing 300-400 g, which are provided food and water ad libitum...
November 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29152822/thoracic-endovascular-repair-versus-medical-management-for-acute-uncomplicated-type-b-aortic-dissection
#5
Tariq H Enezate, Jad Omran, Ashraf S Al-Dadah, Christopher White, Mitul Patel, Ehtisham Mahmud, Rossella Fattori, Jeffrey A Goldstein, Nilesh Goswami, William A Gray, Deepak L Bhatt
BACKGROUND: Current treatment options and outcomes for acute uncomplicated thoracic Type-B aortic dissection (TBAD) remain unclear between medical management (MED) and thoracic endovascular aortic repair (TEVAR). In this study we aim to compare both strategies in terms of all-cause mortality, aortic dilation, and aortic rupture. METHODS: MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials were queried from January 1990 through March 2017. Only studies comparing TEVAR to MED for acute uncomplicated TBAD were included...
November 20, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29150241/targeting-interleukin-1%C3%AE-protects-from-aortic-aneurysms-induced-by-disrupted-transforming-growth-factor-%C3%AE-signaling
#6
Francesco Da Ros, Raimondo Carnevale, Giuseppe Cifelli, Dario Bizzotto, Manuel Casaburo, Marialuisa Perrotta, Lorenzo Carnevale, Iolanda Vinciguerra, Stefania Fardella, Roberta Iacobucci, Giorgio M Bressan, Paola Braghetta, Giuseppe Lembo, Daniela Carnevale
Aortic aneurysms are life-threatening conditions with effective treatments mainly limited to emergency surgery or trans-arterial endovascular stent grafts, thus calling for the identification of specific molecular targets. Genetic studies have highlighted controversial roles of transforming growth factor β (TGF-β) signaling in aneurysm development. Here, we report on aneurysms developing in adult mice after smooth muscle cell (SMC)-specific inactivation of Smad4, an intracellular transducer of TGF-β. The results revealed that Smad4 inhibition activated interleukin-1β (IL-1β) in SMCs...
November 10, 2017: Immunity
https://www.readbyqxmd.com/read/29149323/should-the-dilated-ascending-aorta-be-repaired-at-the-time-of-bicuspid-aortic-valve-replacement
#7
Tsuyoshi Kaneko, Prem Shekar, Vladimir Ivkovic, Nicholas T Longford, Chuan-Chin Huang, Martin I Sigurdsson, Robert C Neely, Maroun Yammine, Julius I Ejilofor, Vanessa Montiero Vieira, Jasmine T Shahram, Karam M Habchi, Gregory W Malzberg, Peter S Martin, Jordan Bloom, Eric M Isselbacher, J Daniel Muehlschlegel, Thoralf M Sundt, Simon C Body
OBJECTIVES: Bicuspid aortic valve (BAV) is the most common congenital valvular abnormality and frequently presents with accelerated calcific aortic valve disease, requiring aortic valve replacement (AVR) and thoracic aortic aneurysm and dissection. Supporting evidence for Association Guidelines of aortic dimensions for aortic resection is sparse. We sought to determine whether concurrent repair of dilated or aneurysmal aortic disease during AVR in patients with BAV substantially improves morbidity and mortality outcomes...
November 14, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29147966/polyamine-concentration-is-increased-in-thoracic-ascending-aorta-of-patients-with-bicuspid-aortic-valve
#8
Amalia Forte, Mario Grossi, Ciro Bancone, Marilena Cipollaro, Marisa De Feo, Per Hellstrand, Lo Persson, Bengt-Olof Nilsson, Alessandro Della Corte
Polyamines are cationic molecules synthesized via a highly regulated pathway, obtained from the diet or produced by the gut microbiota. They are involved in general molecular and cellular phenomena that play a role also in vascular disease. Bicuspid aortic valve (BAV) is a congenital malformation associated to a greater risk of thoracic ascending aorta (TAA) aneurysm, whose pathogenesis is not yet well understood. We focused on differential analysis of key members of polyamine pathway and on polyamine concentration in non-dilated TAA samples from patients with either stenotic tricuspid aortic valve (TAV) or BAV (diameter ≤ 45 mm), vs...
November 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29147153/successful-aortic-banding-for-type-ia-endoleak-due-to-neck-dilatation-after-endovascular-abdominal-aortic-aneurysm-repair-case-report
#9
Yasushi Tashima, Koichi Tamai, Takehiro Shirasugi, Kenichiro Sato, Takahiro Yamamoto, Yusuke Imamura, Atsushi Yamaguchi, Hideo Adachi, Toshiyuki Kobinata
A 69-year-old man with a type IA endoleak that developed approximately 21 months after endovascular abdominal aortic aneurysm repair (EVAR) of a 46 mm diameter aneurysm was referred to our department. He had impaired renal function, Parkinson's disease, and previous cerebral infarction. Computed tomography angiography showed a type IA endoleak with neck dilatation and that the aneurysm had grown to 60 mm in diameter. We decided to perform aortic banding. The type IA endoleak disappeared after banding and the patient was discharged on postoperative day 10...
September 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29146482/impaired-left-atrial-strain-as-a-predictor-of-new-onset-atrial-fibrillation-after-aortic-valve-replacement-independently-of-left-atrial-size
#10
Guilherme Pessoa-Amorim, Jennifer Mancio, Luís Vouga, José Ribeiro, Vasco Gama, Nuno Bettencourt, Ricardo Fontes-Carvalho
INTRODUCTION AND OBJECTIVES: Left atrial dysfunction in aortic stenosis may precede atrial enlargement and predict the occurrence of atrial fibrillation (AF). To test this hypothesis, we assessed left atrial function and determined its impact on the incidence of AF after aortic valve replacement. METHODS: A total of 149 severe aortic stenosis patients (74±8.6 years, 51% men) with no prior AF were assessed using speckle-tracking echocardiography. Left atrial function was evaluated using peak atrial longitudinal strain (PALS), peak atrial contraction strain (PACS), and phasic left atrial volumes...
November 13, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29145894/inositol-in-the-management-of-abdominal-aortic-aneurysm-imagen-study-protocol-for-a-randomised-controlled-trial
#11
Sophie E Rowbotham, Jenna L Pinchbeck, Georgina Anderson, Bernie Bourke, Michael Bourke, T Christian Gasser, Rene Jaeggi, Jason S Jenkins, Corey S Moran, Susan K Morton, Christopher M Reid, Ramesh Velu, Lisan Yip, Joseph V Moxon, Jonathan Golledge
BACKGROUND: An abdominal aortic aneurysm (AAA) is a focal dilation of the abdominal aorta and is associated with a risk of fatal rupture. Experimental studies suggest that myo-inositol may exert beneficial effects on AAAs through favourable changes to biological pathways implicated in AAA pathology. The aim of the Inositol in the MAnaGemENt of abdominal aortic aneurysm (IMAGEN) trial is to assess if myo-inositol will reduce AAA growth. METHODS/DESIGN: IMAGEN is a multi-centre, prospective, parallel-group, randomised, double-blind, placebo-controlled trial...
November 16, 2017: Trials
https://www.readbyqxmd.com/read/29144018/navigated-retrograde-endoscopic-myotomy-rem-for-the-treatment-of-therapy-resistant-achalasia
#12
K D Pham, R F Havre, T Langø, E F Hofstad, G A Tangen, R Mårvik, T Pham, O H Gilja, J G Hatlebakk, A Viste
BACKGROUND: In achalasia, muscle spasm may involve the proximal esophagus. When the muscle spasm is located in the proximal esophagus, conventional per oral endoscopic myotomy (POEM) may not be sufficient to relieve symptoms. In this paper, we describe retrograde endoscopic myotomy (REM) as a novel approach to perform myotomy of the proximal esophagus, with the application of a navigation tool for anatomical guidance during REM. We aim to evaluate the feasibility and safety of REM and usefulness of the navigation during REM...
November 16, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29141546/current-theories-and-clinical-trial-evidence-for-limiting-human-abdominal-aortic-aneurysm-growth
#13
Jing Yu, Shuai Liu, Jianhua Huang, Wei Wang
BACKGROUND: Abdominal aortic aneurysm (AAA) refers to localized dilation of abdominal aorta. AAA is largely asymptomatic, but aneurysmal rupture results in a high mortality rate. AAA with a diameter greater than 55 mm carries a high risk of rupture. There are currently no known medical treatments effective in limiting the growth of small AAA. OBJECTIVE: To review the current status of and challenges faced in limiting AAA growth. METHODS: Data from human investigations and animal model studies were summarized...
November 12, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/29141071/usefulness-of-total-12-lead-qrs-voltage-as-a-clue-to-diagnosis-of-patients-with-cardiac-sarcoidosis-severe-enough-to-warrant-orthotopic-heart-transplant
#14
William C Roberts, Tiffany M Becker, Shelley A Hall
Importance: Severe heart failure caused by cardiac sarcoidosis is difficult to diagnosis without biopsy. Objective: To assess whether total electrocardiographic 12-lead QRS voltage may be a clue to diagnosis. Design, Setting, Participants: Case-series study with cases collected at Baylor University Medical Center at Dallas, Dallas, Texas, from January 13, 2005, to January 24, 2017. The clinical records of 16 patients with severe heart failure caused by cardiac sarcoidosis were studied...
November 15, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29137967/procedural-and-thirty-day-outcomes-following-transfemoral-implantation-of-the-fully-repositionable-and-retrievable-lotus-valve-without-routine-pre-dilatation-in-a-consecutive-patient-cohort-a-single-centre-experience
#15
Neil Ruparelia, Katharine Thomas, James D Newton, Kate Grebenik, Amar Keiralla, George Krasopoulos, Rana Sayeed, Adrian P Banning, Rajesh K Kharbanda
BACKGROUND / PURPOSE: The Lotus valve (Boston Scientific, Natick, MA, USA) is a contemporary transcatheter aortic valve implantation (TAVI) device that is fully repositionable and retrievable to aid implantation and optimise procedural results. The ability to implant the device without routine pre-dilatation is another possible advantage reducing associated risks and procedure times. The aim of this study is to report procedural and 30-day outcomes following TAVI in a consecutive patient group presenting with severe symptomatic aortic stenosis with the Lotus valve system without routine pre-dilatation...
November 4, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29137728/a-computational-model-for-false-lumen-thrombosis-in-type-b-aortic-dissection-following-thoracic-endovascular-repair
#16
Claudia Menichini, Zhuo Cheng, Richard G J Gibbs, Xiao Yun Xu
Thoracic endovascular repair (TEVAR) has recently been established as the preferred treatment option for complicated type B dissection. This procedure involves covering the primary entry tear to stimulate aortic remodelling and promote false lumen thrombosis thereby restoring true lumen flow. However, complications associated with incomplete false lumen thrombosis, such as aortic dilatation and stent graft induced new entry tears, can arise after TEVAR. This study presents the application and validation of a recently developed mathematical model for patient-specific prediction of thrombus formation and growth under physiologically realistic flow conditions...
November 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29136132/aortic-events-and-reoperations-after-elective-arch-surgery-incidence-surgical-strategies-and-outcomes
#17
Maximilian Luehr, Sven Peterss, Andreas Zierer, Davide Pacini, Christian D Etz, Malakh Lal Shrestha, Konstantinos Tsagakis, Bartosz Rylski, Giampiero Esposito, Klaus Kallenbach, Ruggero De Paulis, Paul P Urbanski
OBJECTIVES: The true incidence of aortic events (AEs) and reoperations (REDO) following elective total aortic arch replacement remains unknown. The aim of this study was to review the incidence of AEs and surgical REDO, and its respective outcomes after 1232 elective arch repairs at 11 European aortic centres. METHODS: Retrospective chart review (in the absence of prospective data collection) was performed for statistical analysis. Follow-up was conducted during routine clinical examination or in a telephone interview with patients and/or their respective physicians...
November 9, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29135917/asperlin-inhibits-lps-evoked-foam-cell-formation-and-prevents-atherosclerosis-in-apoe-mice
#18
Yue Zhou, Ran Chen, Dong Liu, Chongming Wu, Peng Guo, Wenhan Lin
Asperlin is a marine-derived natural product with antifungal and anti-inflammatory activities in vitro. In the present study, we isolated asperlin from a marine Aspergillus versicolor LZD4403 fungus and investigated its anti-atherosclerotic effects in vitro and in vivo. Asperlin significantly inhibited lipopolysaccharides (LPS)- but not oxidated low-density lipoprotein (oxLDL)-evoked foam cell formation and promoted cholesterol efflux in RAW264.7 macrophages. Supplementation with asperlin also suppressed LPS-elicited production of pro-inflammatory factors in RAW264...
November 14, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29131801/real-world-experience-using-the-acurate-neo%C3%A2-prosthesis-30-day-outcomes-of-1000-patients-enrolled-in-the-savi-tf-registry
#19
Helge Möllmann, Christian Hengstenberg, Michael Hilker, Sebastian Kerber, Ulrich Schäfer, Tanja Rudolph, Axel Linke, Norbert Franz, Thomas Kuntze, Holger Nef, Utz Kappert, Thomas Walther, Michael O Zembala, Stefan Toggweiler, Won-Keun Kim
AIMS: The aim of the SAVI-TF registry was to assess the safety and performance of the self-expanding ACURATE neoTM transfemoral transcatheter heart valve in a large patient population with severe aortic stenosis and to investigate if the outcomes obtained in the CE-mark cohort can be replicated in an unselected all-comers population. METHODS AND RESULTS: From October 2014 until April 2016, 1000 patients were enrolled in this prospective, European multicenter registry...
November 14, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29129702/fkbp8-protects-the-heart-from-hemodynamic-stress-by-preventing-the-accumulation-of-misfolded-proteins-and-endoplasmic-reticulum-associated-apoptosis-in-mice
#20
Tomofumi Misaka, Tomokazu Murakawa, Kazuhiko Nishida, Yosuke Omori, Manabu Taneike, Shigemiki Omiya, Chris Molenaar, Yoshihiro Uno, Osamu Yamaguchi, Junji Takeda, Ajay M Shah, Kinya Otsu
Protein quality control in cardiomyocytes is crucial to maintain cellular homeostasis. The accumulation of damaged organelles, such as mitochondria and misfolded proteins in the heart is associated with heart failure. During the process to identify novel mitochondria-specific autophagy (mitophagy) receptors, we found FK506-binding protein 8 (FKBP8), also known as FKBP38, shares similar structural characteristics with a yeast mitophagy receptor, autophagy-related 32 protein. However, knockdown of FKBP8 had no effect on mitophagy in HEK293 cells or H9c2 myocytes...
November 10, 2017: Journal of Molecular and Cellular Cardiology
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