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abdominal aortic calcification

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https://www.readbyqxmd.com/read/29785859/apposition-and-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-in-the-infrarenal-aortic-neck
#1
Kim van Noort, Simon P Overeem, Ruben van Veen, Jan M M Heyligers, Michel M P J Reijnen, Richte C L Schuurmann, Cornelis H Slump, Rogier Kropman, Jean-Paul P M de Vries
PURPOSE: To investigate the initial proximal position and seal of the Nellix EndoVascular Aneurysm Sealing (EVAS) system in the aortic neck using a novel methodology. METHODS: Forty-six consecutive patients who underwent elective EVAS for an abdominal aortic aneurysm were retrospectively selected and dichotomized into an early (n = 23) and a late (n = 23) group. The aortic neck morphology and aortic neck surface (ANS) were determined on preoperative computed tomography (CT) scans; the endograft position and nonapposition surface (NAS) were determined on the 1-month CT scans...
May 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29780110/bevacizumab-induced-aortic-arterial-thrombosis
#2
Kazuo Suzuki, Takahiro Yanagimura, Kazumasa Ohashi, Hiroshi Kagamu, Toshinori Takada
A 65-year-old man was diagnosed with advanced non-small, non-squamous lung cancer. He was treated with chemotherapy containing bevacizumab as well as cisplatin and pemetrexed. After 2 courses of treatment, computed tomography revealed that his abdominal aortic artery was almost occluded by a thrombus; however, he had no ischemic symptoms. Heparin infusion and warfarin reduced the size of the arterial thrombus and the patient was subsequently treated with chemotherapy without bevacizumab. No thrombotic events occurred during the subsequent treatment...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29775762/aortic-vascular-calcification-is-inversely-associated-with-the-trabecular-bone-score-in-patients-receiving-dialysis
#3
Jasna Aleksova, Samantha Kurniawan, Mirna Vucak-Dzumhur, Peter Kerr, Peter R Ebeling, Frances Milat, Grahame J Elder
INTRODUCTION: Progressive chronic kidney disease (CKD) confers a marked increase in risk for vascular calcification, cardiovascular disease, fracture and mortality, with likely contributing factors including dysregulated bone metabolism and mineral homeostasis. In general population studies, increased vascular calcification is directly related to mortality and inversely related to bone mineral density (BMD) measured by dual-energy X-ray absorptiometry (DXA). In patients with CKD, abnormalities in turnover, mineralization and bone volume, reduce the ability of DXA to predict fracture...
May 15, 2018: Bone
https://www.readbyqxmd.com/read/29772324/morphology-related-limitations-of-evar-applicability-in-the-treatment-of-aaa-in-west-central-poland
#4
Łukasz Dzieciuchowicz, Jolanta Tomczak, Ewa Strauss, Grzegorz Oszkinis
BACKGROUND: To analyze the current applicability of endovascular aneurysm repair (EVAR) in patients with an infrarenal abdominal aortic aneurysm (AAAs) with indication for elective treatment in West-Central Poland. METHODS: Computed tomography angiograms of 100 consecutive patients with infrarenal AAA deemed to require treatment were analyzed with an OsiriX DICOM viewer in 3D-MPR mode. Proximal neck diameter, length, angulation, shape, the presence of thrombus and calcification, distal neck diameter, and morphology of the iliac arteries were determined...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29766009/persistent-buttock-claudication-after-endovascular-abdominal-aortic-aneurysm-repair
#5
Alessandro Robaldo, Stefano Pagliari, Filippo Piaggio, Patrizio Colotto
We describe the successful surgical treatment of a 71-year-old man affected by right buttock claudication after a right internal iliac artery (IIA) coil embolization as an adjunct to endovascular iliac artery aneurysm repair. Computed tomography angiography revealed extensive aortoiliac calcifications and thrombus in the vessel walls. Despite patency of the contralateral IIA and preservation of right distal collateral flow through ipsilateral hypogastric branches, the symptom was persistent and disabling. The high-risk patient underwent an "open" repair of the infrarenal abdominal aneurysm with removal of the entire stent-graft and concomitant revascularization of the right IIA...
December 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29718962/high-molecular-weight-adiponectin-inhibits-vascular-calcification-in-renal-allograft-recipients
#6
Kanae Nomura-Nakayama, Hiroki Adachi, Nobuhiko Miyatake, Norifumi Hayashi, Keiji Fujimoto, Hideki Yamaya, Hitoshi Yokoyama
BACKGROUND: Adiponectin (ADPN) prevents the development/recurrence of cardiovascular events via its anti-atherogenic effects. However, few long-term studies have examined the changes in serum ADPN levels and arterial calcification seen in renal allograft recipients. SUBJECTS AND METHODS: The effects of the serum ADPN level on arterial calcification were examined in 51 Japanese renal allograft recipients. Abdominal aorta calcification was evaluated on computed tomography using the aortic calcification area index (ACAI)...
2018: PloS One
https://www.readbyqxmd.com/read/29701379/which-aneurysm-characteristics-predict-evar-nonsuccess
#7
Pedro Pinto Sousa, Pedro Brandão, Alexandra Canedo
INTRODUCTION: Hostile anatomic characteristics in patients undergoing endovascular abdominal aortic aneurysm repair (EVAR) may lead to technical nonsuccess of the procedure, late complications, reintervention or death. The authors analyzed anatomical abdominal aortic aneurysm specific considerations so as technical endoprosthesis implantation and correlate them with endoleak development and postoperative survival. METHODS: Authors retrospectively reviewed all consecutive, elective, EVAR's that occurred between 2010 and 2016, with available data, at one institution for abdominal, infra renal, aortic aneurysms...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29672176/prevalence-and-risk-factors-for-vascular-calcification-in-chinese-patients-receiving-dialysis-baseline-results-from-a-prospective-cohort-study
#8
Zhi-Hong Liu, Xue-Qing Yu, Jun-Wei Yang, Ai-Li Jiang, Bi-Cheng Liu, Chang-Ying Xing, Ji-Zhuang Lou, Mei Wang, Hong Cheng, Jun Liu, Jun-Zhou Fu, Ai-Hua Zhang, Miao Zhang, Qiao-Ling Zhou, Chen Yu, Rong Wang, Li Wang, Yu-Qing Chen, Tian-Jun Guan, Ai Peng, Chen Nan, Chuan-Ming Hao, Xu-Yang Cheng
OBJECTIVE: With limited data available on calcification prevalence in chronic kidney disease (CKD) patients on dialysis, the China Dialysis Calcification Study (CDCS) determined the prevalence of vascular/valvular calcification (VC) and association of risk factors in Chinese patients with prevalent hemodialysis (HD) or peritoneal dialysis (PD). METHODS: CKD patients undergoing HD/PD for ≥6 months were enrolled. Prevalence data for calcification and medical history were documented at baseline...
April 19, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29652429/successful-rotational-atherectomy-for-abdominal-aortic-stenosis-with-severe-calcification-in-a-patient-treated-with-transfemoral-transcatheter-aortic-valve-implantation
#9
Toru Naganuma, Hiroyoshi Kawamoto, Hirokazu Onishi, Sunao Nakamura
No abstract text is available yet for this article.
2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29622969/relationship-between-serum-osteoprotegerin-and-vascular-calcifications-in-hemodialysis-patients
#10
Tarek Z El Baz, Osama A Khamis, Amal El-Shehaby, Hussein Chahine, Ahmad Alaa Al-Din Ahmed, Mostafa A Alsawasany
Background: Uremia is a vasculopathic process, and both cardiac calcification and vascular calcification seen from the early stages of chronic kidney disease. Osteoprotegerin could play a crucial role in atherosclerotic plaque formation, maturation and calcification. The goal of this study was to determine the relationship of serum osteoprotegerin with vascular calcification in patients with end stage kidney disease who were maintained on regular hemodialysis. Methods: Sixty clinically stable chronic renal failure patients undergoing regular hemodialysis were enrolled in this cross sectional study...
June 2017: Egypt Heart J
https://www.readbyqxmd.com/read/29558928/the-relationship-between-poor-nutritional-status-and-progression-of-aortic-calcification-in-patients-on-maintenance-hemodialysis
#11
Teppei Okamoto, Shingo Hatakeyama, Hirotake Kodama, Hirotaka Horiguchi, Yuka Kubota, Koichi Kido, Masaki Momota, Shogo Hosogoe, Yoshimi Tanaka, Tooru Takashima, Fumitada Saitoh, Tadashi Suzuki, Chikara Ohyama
BACKGROUND: Although aortic calcification has a significant negative impact on prognosis in patients on hemodialysis (HD), risk factors for aortic calcification progression remain unclear. The aim of this study was to investigate the relationship between malnutrition and aortic calcification progression in patients on HD. METHODS: Between April 2015 and October 2016, we treated 232 patients on HD. Of those, we retrospectively evaluated data from 184 patients who had had regular blood tests and computed tomography (CT) scans...
March 20, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29548813/outcomes-of-using-endovascular-aneurysm-repair-with-active-fixation-in-complex-aneurysm-morphology
#12
Rami O Tadros, Alex Sher, Martin Kang, Ageliki Vouyouka, Windsor Ting, Daniel Han, Michael Marin, Peter Faries
OBJECTIVE: The ideal treatment option for patients with complex aneurysm morphology remains highly debated. The aim of this study was to investigate the impact of endovascular aneurysm repair (EVAR) with active fixation on outcomes in patients with complex aneurysm morphology. METHODS: There were 340 consecutive patients who underwent EVAR using active fixation devices, 234 with active infrarenal fixation (AIF; Gore Excluder; W. L. Gore & Associates, Flagstaff, Ariz) and 106 with active suprarenal fixation (ASF; 85 Medtronic Endurant [Medtronic, Santa Rosa, Calif] and 21 Cook Zenith [Cook Medical, Bloomington, Ind])...
March 13, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29501598/decellularized-and-secured-porcine-arteries-with-naoh-based-process-proof-of-concept
#13
Mathieu van Steenberghe, Thomas Schubert, Caroline Bouzin, Carlo Caravaggio, Yves Guiot, Daela Xhema, Pierre Gianello
BACKGROUND: There is a need for small caliber vascular prosthesis. Synthetic grafts are hindered by thrombogenicity and rapid occlusion. Decellularized matrices could be an alternative. We assessed in vitro and in vivo the biocompatibility of porcine artery treated with a chemical/physical process for decellularization and graft securitization with non/conventional pathogens inactivation. METHODS: Porcine carotid arteries (PCA) were treated. First, biopsies (n = 4/tissue) were performed before/after treatment to assess decellularization (hematoxylin and eosin/-4',6-diamidino-2-phenylindole/DNA/Miller)...
May 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29490308/lower-serum-irisin-levels-are-associated-with-increased-vascular-calcification-in-hemodialysis-patients
#14
Lian He, Wan-Yu He, La-Ta A, Wen-Ling Yang, Ai-Hua Zhang
BACKGROUND/AIMS: Vascular calcification, which involves an active cellular transformation of vascular smooth muscle cells into bone forming cells, is prevalent and predicts mortality in dialysis patients. Its mechanisms are complex and unclear. We presume that irisin, a newly identified myokine also may play roles in vascular calcification in hemodialysis patients. This study aims to evaluate serum irisin levels and establish their relation to vascular calcification and other parameters in hemodialysis patients...
2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29489868/quantification-of-abdominal-aortic-calcification-inherent-measurement-errors-in-current-computed-tomography-imaging
#15
Ruben V C Buijs, Eva L Leemans, Marcel Greuter, Ignace F J Tielliu, Clark J Zeebregts, Tineke P Willems
OBJECTIVE: Quantification software for coronary calcification is often used to measure abdominal aortic calcification on computed tomography (CT) images. However, there is no evidence substantiating the reliability and accuracy of these tools in this setting. Differences in coronary and abdominal CT acquisition and presence of intravascular contrast may affect the results of these tools. Therefore, this study investigates the effects of CT acquisition parameters and iodine contrast on automated quantification of aortic calcium on CT...
2018: PloS One
https://www.readbyqxmd.com/read/29460069/experimental-feasibility-of-spectral-photon-counting-computed-tomography-with-two-contrast-agents-for-the-detection-of-endoleaks-following-endovascular-aortic-repair
#16
Julia Dangelmaier, Daniel Bar-Ness, Heiner Daerr, Daniela Muenzel, Salim Si-Mohamed, Sebastian Ehn, Alexander A Fingerle, Melanie A Kimm, Felix K Kopp, Loic Boussel, Ewald Roessl, Franz Pfeiffer, Ernst J Rummeny, Roland Proksa, Philippe Douek, Peter B Noël
OBJECTIVES: After endovascular aortic repair (EVAR), discrimination of endoleaks and intra-aneurysmatic calcifications within the aneurysm often requires multiphase computed tomography (CT). Spectral photon-counting CT (SPCCT) in combination with a two-contrast agent injection protocol may provide reliable detection of endoleaks with a single CT acquisition. METHODS: To evaluate the feasibility of SPCCT, the stent-lined compartment of an abdominal aortic aneurysm phantom was filled with a mixture of iodine and gadolinium mimicking enhanced blood...
February 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29443425/long-term-atherosclerotic-vascular-disease-risk-and-prognosis-in-elderly-women-with-abdominal-aortic-calcification-on-lateral-spine-images-captured-during-bone-density-testing-a-prospective-study
#17
Joshua R Lewis, John T Schousboe, Wai H Lim, Germaine Wong, Kevin E Wilson, Kun Zhu, Peter L Thompson, Douglas P Kiel, Richard L Prince
Lateral spine images are captured using bone densitometers for vertebral fracture assessment (VFA) in older women. Abdominal aortic calcification (AAC) is commonly seen on these images; however, the long-term prognosis in women with AAC remains uncertain. In a prospective study of 1052 community-dwelling ambulant white women over 70 years old abdominal aortic calcification 24 scale (AAC24) scores were calculated from digital lateral spine images captured during bone density testing in 1998 or 1999. Cardiovascular risk factors were assessed in 1998, whereas 14...
February 14, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29440332/downregulated-serum-14-15-epoxyeicosatrienoic-acid-is-associated-with-abdominal-aortic-calcification-in-patients-with-primary-aldosteronism
#18
Pinming Liu, Shaoling Zhang, Jingwei Gao, Ying Lin, Guangzi Shi, Wanbing He, Rhian M Touyz, Li Yan, Hui Huang
Patients with primary aldosteronism (PA) have increased risk of target-organ damage, among which vascular calcification is an important indicator of cardiovascular mortality. 14, 15-Epoxyeicosatrienoic acid (14, 15-EET) has been shown to have beneficial effects in vascular remodeling. However, whether 14, 15-EET associates with vascular calcification in PA is unknown. Thus, we aimed to investigate the association between 14, 15-EET and abdominal aortic calcification (AAC) in patients with PA. Sixty-nine patients with PA and 69 controls with essential hypertension, matched for age, sex, and blood pressure, were studied...
April 2018: Hypertension
https://www.readbyqxmd.com/read/29430885/abdominal-aortic-aneurysm-calcification-trying-to-identify-a-reliable-semiquantitative-method
#19
Marina Dias-Neto, Emmanuel Neves, Fábio Sousa-Nunes, Tiago Henriques-Coelho, Sérgio Sampaio
BACKGROUND: The main objective of this study was to assess the correlation between three semiquantitative and one computerized method based on Agatston Score (AS), when measuring abdominal aortic calcification (AAC) in abdominal aortic aneurysm (AAA) patients. Secondary aim was to access differences in AAC upon clinical variables, when different methods of calcium scoring are used. METHODS: This was an observational, retrospective, cross-sectional study. A database of AAA patients consecutively submitted to elective repair between 2008 and 2015 was used...
February 8, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29406857/-18-f-sodium-fluoride-uptake-in-abdominal-aortic-aneurysms-the-sofia-3-study
#20
Rachael O Forsythe, Marc R Dweck, Olivia M B McBride, Alex T Vesey, Scott I Semple, Anoop S V Shah, Philip D Adamson, William A Wallace, Jakub Kaczynski, Weiyang Ho, Edwin J R van Beek, Calum D Gray, Alison Fletcher, Christophe Lucatelli, Aleksander Marin, Paul Burns, Andrew Tambyraja, Roderick T A Chalmers, Graeme Weir, Neil Mitchard, Adriana Tavares, Jennifer M J Robson, David E Newby
BACKGROUND: Fluorine-18-sodium fluoride (18 F-NaF) uptake is a marker of active vascular calcification associated with high-risk atherosclerotic plaque. OBJECTIVES: In patients with abdominal aortic aneurysm (AAA), the authors assessed whether 18 F-NaF positron emission tomography (PET) and computed tomography (CT) predicts AAA growth and clinical outcomes. METHODS: In prospective case-control (n = 20 per group) and longitudinal cohort (n = 72) studies, patients with AAA (aortic diameter >40 mm) and control subjects (aortic diameter <30 mm) underwent abdominal ultrasound, 18 F-NaF PET-CT, CT angiography, and calcium scoring...
February 6, 2018: Journal of the American College of Cardiology
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