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Aortic pathology

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https://www.readbyqxmd.com/read/28086801/two-dimensional-speckle-tracking-echocardiography-for-evaluation-of-dilative-ascending-aorta-biomechanics
#1
Monika Bieseviciene, Jolanta Justina Vaskelyte, Vaida Mizariene, Rasa Karaliute, Vaiva Lesauskaite, Raimonda Verseckaite
BACKGROUND: Two-dimensional (2D) echocardiography is one of the most feasible, noninvasive methods for assessing the aortic diameter and biomechanical changes. We studied possible interfaces between noninvasive biomechanical and speckle-tracking (ST) echocardiographic data from dilated aortas. METHODS: Altogether, 44 patients with dilative pathology of ascending aorta (DPAA) were compared with subjects without ascending aortic dilation (diameter <40 mm). DPAA patients formed two groups based on diameter size: group 1, ≤45 mm diameter; group 2, >45 mm...
January 13, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28078775/comparison-of-three-surgical-approaches-for-staging-lymphadenectomy-in-high-risk-endometrial-cancer
#2
Katherine J Pulman, Ebernella S Dason, Lauren Philp, Marcus Q Bernardini, Sarah E Ferguson, Stéphane Laframboise, Eshetu G Atenafu, Taymaa May
OBJECTIVE: To compare laparotomy, laparoscopy, and robotic surgical approaches to lymphadenectomy for high-risk endometrial cancer staging. METHODS: A retrospective cohort study enrolled patients who underwent surgery for pathologic high-risk endometrial carcinoma at the University Health Network, Toronto, Canada, between January 1, 2005 and December 31, 2013. The primary outcome, the median number of nodes retrieved, was compared based on surgical technique. The secondary outcome was the detection of metastatic nodes...
December 7, 2016: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#3
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/28070737/in-silico-analysis-of-the-anti-hypertensive-drugs-impact-on-myocardial-oxygen-balance
#4
A Guala, D Leone, A Milan, L Ridolfi
Hypertension is a very common pathology, and its clinical treatment largely relies on different drugs. Some of these drugs exhibit specific protective functions in addition to those resulting from blood pressure reduction. In this work, we study the impact of commonly used anti-hypertensive drugs (RAAS, [Formula: see text] and calcium channel blockers) on myocardial oxygen supply-consumption balance, which plays a crucial role in type 2 myocardial infarction. To this aim, 42 wash-out hypertensive patients were selected, a number of measured data were used to set a validated multi-scale cardiovascular model to subject-specific conditions, and the administration of different drugs was suitably simulated...
January 9, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28070244/assessment-of-fetus-during-second-trimester-ultrasonography-using-hdlive-software-what-is-its-real-application-in-the-obstetrics-clinical-practice
#5
Gabriele Tonni, Gianpaolo Grisolia, Eduardo Félix Santana, Edward Araujo Júnior
AIM: To show imaging results from application of four-dimensional (4D) ultrasound lightening technique (HDlive™) in clinical obstetrics practice. METHODS: Normal and abnormal fetuses at second and third trimester of pregnancy undergoing routine scan with 4D HDlive™ (5DUS) in the rendering mode are described. Realistic features of fetal structures were provided by 5DUS in the rendering mode. Normal anatomy as well as pathology like cleft lip, hypoplastic face, micrognathia, low-set ears, corpus callosum, arthrogryposis, aortic arch, left congenital diaphragmatic hernia are highlighted in this study...
December 28, 2016: World Journal of Radiology
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
#6
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/28063468/computational-fluid-dynamics-and-aortic-thrombus-formation-following-thoracic-endovascular-aortic-repair
#7
Foeke J H Nauta, Kevin D Lau, Christopher J Arthurs, Kim A Eagle, David M Williams, Santi Trimarchi, Himanshu J Patel, Carlos A Figueroa
BACKGROUND: We present the possible utility of computational fluid dynamics in the assessment of thrombus formation and virtual surgical planning illustrated in a patient with aortic thrombus in a kinked ascending aortic graft following thoracic endovascular aortic repair. METHODS: A patient-specific three-dimensional model was built from computed tomography. Additionally, we modeled 3 virtual aortic interventions to assess their effect on thrombosis potential: (1) open surgical repair, (2) conformable endografting, and (3) single-branched endografting...
January 4, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28060255/a-model-of-cardiac-remodeling-through-constriction-of-the-abdominal-aorta-in-rats
#8
Hui-Chun Ku, Shih-Yi Lee, Yuan-Kun Aden Wu, Kai-Chien Yang, Ming-Jai Su
Heart failure is one of the leading causes of death worldwide. It is a complex clinical syndromethat includes fatigue, dyspnea, exercise intolerance, and fluid retention. Changes in myocardial structure, electrical conduction, and energy metabolism develop with heart failure, leading to contractile dysfunction, increased risk of arrhythmias, and sudden death. Hypertensive heart disease is one of the key contributing factors of cardiac remodeling associated with heart failure. The most commonly-used animal model mimicking hypertensive heart disease is created via surgical interventions, such as by narrowing the aorta...
December 2, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28057391/regional-lymph-node-involvement-in-patients-undergoing-liver-resection-for-colorectal-cancer-metastases
#9
S Nanji, M E Tsang, X Wei, C M Booth
BACKGROUND: While the indications for surgery among patients with colorectal cancer liver metastases (CRCLM) are expanding, the role of surgery in patients with hepatic lymph node involvement remains controversial. We report management and outcomes in a population-based cohort of patients undergoing hepatectomy with concomitant hepatic lymphadenectomy for CRCLM. METHODS: All cases of hepatectomy for CRCLM in the Canadian Province of Ontario from 2002 to 2009 were identified using the population-based Ontario Cancer Registry and linked electronic records of treatment...
December 13, 2016: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28052455/echocardiographic-follow-up-after-transcatheter-aortic-valve-replacement
#10
REVIEW
Vladislavs Sokalskis, Denisa Muraru, Chiara Fraccaro, Massimo Napodano, Augusto D'Onofrio, Giuseppe Tarantini, Luigi Paolo Badano
The use of transcatheter aortic valve replacement (TAVR) for high-risk patients with aortic stenosis has rapidly increased during the past years. Accordingly, more and more patients are referred for a follow-up echocardiographic study after TAVR. However, the echocardiographic evaluation of patients who underwent TAVR places specific demands on echocardiographers. Furthermore, TAVR may be associated with new types of complications, which are frequently unrecognized or underestimated due to lack of familiarity with the normal and pathological appearance of TAVR...
January 3, 2017: Echocardiography
https://www.readbyqxmd.com/read/28051912/utility-of-pet-ct-to-evaluate-retroperitoneal-lymph-node-metastasis-in-high-risk-endometrial-cancer-results-of-acrin-6671-gog-0233-trial
#11
Mostafa Atri, Zheng Zhang, Farrokh Dehdashti, Susanna I Lee, Helga Marques, Shamshad Ali, Wui-Jin Koh, Robert S Mannel, Paul DiSilvestro, Stephanie A King, Michael Pearl, XunClare Zhou, Marie Plante, Katherine M Moxley, Michael Gold
Purpose To assess the diagnostic accuracy of fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) combined with diagnostic contrast material-enhanced computed tomography (CT) in detecting lymph node (LN) metastasis in high-risk endometrial cancer. Materials and Methods This prospective multicenter HIPAA-compliant study had institutional review board approval, and all participants gave written informed consent. Data were accrued between January 2010 and June 2013. Patients underwent PET/CT and pelvic and abdominal lymphadenectomy...
January 3, 2017: Radiology
https://www.readbyqxmd.com/read/28051323/bisphenol-a-interferes-with-swine-vascular-endothelial-cell-functions
#12
Giuseppina Basini, Simona Bussolati, Stefano Grolli, Roberto Ramoni, Francesca Grasselli
Several studies have demonstrated that the endocrine disruptor bisphenol A (BPA) negatively affects animal and human health. An angiogenic process has been suggested among the events disrupted by this molecule, but the underlying mechanisms have not yet been clarified. The effect of BPA on angiogenesis was investigated by means of a bioassay previously validated in our laboratory. Using immortalized swine aortic endothelial cell line (AOC), the development of new blood vessels through a three-dimensional in vitro angiogenesis assay was evaluated...
October 20, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28050476/spectrum-of-abdominal-aortic-disease-in-a-tertiary-health-care-setup-mdct-based-observational-study
#13
Dg Santosh Kumar, Venkatraman Bhat, Karthik Gadabanahalli, Arjun Kalyanpur
INTRODUCTION: Abdominal aortic disease is an important cause of clinical disability that requires early detection by imaging methods for prompt and effective management. Understanding regional disease pattern and prevalence has a bearing on healthcare management and resource planning. Non-invasive, conclusive imaging strategy plays an important role in the detection of disease. Multi-Detector Computed Tomography (MDCT) with its technological developments provides affordable, accurate and comprehensive imaging solution...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050440/conservative-management-of-isolated-superior-mesenteric-artery-and-celiac-trunk-dissection-a-case-report-and-literature-review
#14
Mohamed Hedfi, Yosra Messaoudi, Adnen Chouchene
Isolated arterial dissection without aortic pathology has been rarely reported in mesenteric vessels. The natural history and appropriate treatment for this disease is uncertain because of the scarcity of literature which limits the data available to the clinician, resulting in management challenges. Herein, we report a rare case of a 42-year-old Tunisian man with spontaneous dissection and aneurysmal dilatation of the Celiac Artery (CA) and the Superior Mesenteric Artery (SMA) with partial thrombosis. This case was successfully managed conservatively with heparin infusion and blood pressure control and the patient remained symptom free at 15 months follow up...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28049884/a-case-of-cardioembolic-stroke-due-to-intracardiac-papillary-fibroelastoma-evaluated-by-using-transesophageal-echocardiography
#15
Yuichiro Ohya, Shigeru Fujimoto, Makoto Kanazawa, Naoki Tagawa, Masato Osaki, Takanari Kitazono
A 62-year-old woman had a prior ischemic stroke in the right temporal lobe with dysarthria and dysesthesia of the left hand. Embolic stroke of undetermined source (ESUS) was diagnosed and warfarin was administered. However, transient ischemic attack recurred upon admission to our hospital. Paroxysmal atrial fibrillation and cerebral arterial stenotic lesions were absent. Transesophageal echocardiography revealed a mobile hyperechoic structure on the aortic valve indicating papillary fibroelastoma. She was diagnosed with a brain embolism due to the intracardiac tumor which was surgically excised and pathologically confirmed as papillary fibroelastoma...
December 28, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28049491/fenofibrate-in-the-management-of-abdominal-aortic-aneurysm-fame-study-protocol-for-a-randomised-controlled-trial
#16
Sophie E Rowbotham, Doug Cavaye, Rene Jaeggi, Jason S Jenkins, Corey S Moran, Joseph V Moxon, Jenna L Pinchbeck, Frank Quigley, Christopher M Reid, Jonathan Golledge
BACKGROUND: Abdominal aortic aneurysm (AAA) is a slowly progressive destructive process of the main abdominal artery. Experimental studies indicate that fibrates exert beneficial effects on AAAs by mechanisms involving both serum lipid modification and favourable changes to the AAA wall. METHODS/DESIGN: Fenofibrate in the management of AbdoMinal aortic anEurysm (FAME) is a multicentre, randomised, double-blind, placebo-controlled clinical trial to assess the effect of orally administered therapy with fenofibrate on key pathological markers of AAA in patients undergoing open AAA repair...
January 4, 2017: Trials
https://www.readbyqxmd.com/read/28049221/no-clamp-complete-parachute-technique-for-ascending-aorta-anastomosis-in-hybrid-aortic-arch-debranching-surgery
#17
I-Ming Chen, Po-Lin Chen, Hsiao-Huang Chang
The proper proximal landing zone is a key element for success of endografting in thoracic aortic pathology. If coverage of innominate artery is unavoidable for safe proximal landing, arch debranching surgery is necessary to recruit supra-aortic blood flow before endografting. However, calcified or adhesive ascending aorta makes it difficult to clamp ascending aorta for anastomosis in the first step of arch debranching surgery. We present a novel "no clamp complete parachute technique" to complete this challenging anastomosis...
January 3, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28043471/relationship-of-normal-aortic-valve-cusp-dimensions-a-tool-to-optimize-cusp-reconstruction-valvuloplasty
#18
Sujata Subramanian, Vsevolod Tikhomirov, Saroja Bharati, Chawki ElZein, David Roberson, Michel N Ilbawi
Outcomes of surgical aortic valvuloplasty hinge primarily on optimal leaflet design. Imprecise valve reconstruction can result in insufficiency or stenosis. Predicting postrepair leaflet parameters from pre- or intraoperative readily measurable valve dimensions could result in improved reconstruction. This study analyzes the relationships between different parameters of the normal aortic valve to establish a method of deriving the optimal dimensions of the reconstructed leaflet following valvuloplasty. Morphologic analysis of the normal aortic valve was performed on 50 autopsy specimens...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28043436/endovascular-repair-of-type-a-aortic-dissection-current-experience-and-technical-considerations
#19
Joshua D Horton, Tilo Kölbel, Stephan Haulon, Ali Khoynezhad, Richard M Green, Michael A Borger, Firas F Mussa
Dissection of the ascending aorta, type A aortic dissection (TAAD), represents a surgical emergency with high morbidity and mortality. Current open surgical techniques, although state-of-the-art procedures and having improved outcomes for patients with TAAD over the last decades, confer significant risk of complications and death. Recently, endovascular techniques for repair of both the abdominal and thoracic aorta have gained acceptance within the vascular and cardiovascular surgical communities as a useful tool in select pathologies and patient populations...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28040763/feasibility-and-clinical-outcome-after-minimally-invasive-valve-sparing-aortic-root-replacement
#20
Kristina Wachter, Ulrich F W Franke, Rashmi Yadav, Ragi Nagib, Adrian Ursulescu, Samir Ahad, Hardy Baumbach
OBJECTIVES: This study aims to examine the feasibility and clinical course after minimally invasive David procedure compared with those via a conventional median sternotomy. METHODS: One hundred and ninety-two consecutive patients who underwent elective valve-sparing aortic root replacement (David procedure) with or without additional cusp repair for aortic regurgitation (n = 17, 8.9%), dilatation of the aortic root (n = 95, 49.5%) or a combination of both pathologies (n = 80, 41...
December 31, 2016: Interactive Cardiovascular and Thoracic Surgery
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