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aorta ultrasound

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https://www.readbyqxmd.com/read/29347958/correlation-of-structural-defects-in-the-ascending-aortic-wall-to-ultrasound-parameters-benefits-for-decision-making-process-in-aortic-valve-surgery
#1
Saša D Borović, Milica M Labudović Borović, Ivan V Zaletel, Vera N Todorović, Petar A Dabić, Jelena T Rakočević, Jelena M Marinković-Erić, Predrag S Milojević
BACKGROUND: Histopathological changes in the ascending aorta wall in patients with severe tricuspid aortic valve (TAV) stenosis were graded and correlated to echocardiographic parameters. Objective was to associate threshold echocardiographic values with structural defects in the ascending aorta providing a tool to improve decision-making process in cases when simultaneous aortic valve replacement (AVR) and ascending aorta replacement is considered. METHODS: Biopsies from 108 TAV stenosis patients subjected to AVR were graded into three grades according to severity of aortic wall changes...
January 18, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29345099/aortic-versus-carotid-intima-media-thickness-and-impact-of-aortic-valve-disease
#2
Johan Petrini, Margareta Ring, Anders Franco-Cereceda, Kenneth Caidahl, Maria J Eriksson
BACKGROUND AND AIMS: Intima-media thickness is a marker for atherosclerosis but is also influenced by shear stress and flow. We evaluated the relation between intima-media thickness of the descending aorta (AoIMT) and the common carotid artery (CIMT) in patients with and without severe aortic valve disease (sAVD). METHODS: A total of 310 patients (233 with sAVD, 77 without) were examined with regard to AoIMT and CIMT using transesophageal echocardiography and carotid ultrasound, respectively, before valvular and/or aortic surgery...
January 17, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29317977/stemi-due-to-big-ostial-left-main-thrombus-extending-into-aorta-challenging-situation-with-no-clear-guidelines
#3
Mohammady Shahin, Oliver Gaemperli, Patrick Siegrist, Jasmina Alibegovic
Extensive left main (LM) coronary artery thrombus is a rare and life-threatening angiographic finding with usual dramatic clinical presentation including hemodynamic instability and sudden cardiac death. The proper management of a big LM thrombus extending into aorta remains a challenging issue with no clear guidelines. In the following case report we present a 45-year-old patient with no apparent risk factors for coronary artery disease who presented with acute infero-lateral ST-elevation myocardial infarction (STEMI)...
December 2017: Cardiology Research
https://www.readbyqxmd.com/read/29313113/epidemiology-and-contemporary-management-of-abdominal-aortic-aneurysms
#4
Brant W Ullery, Richard L Hallett, Dominik Fleischmann
Abdominal aortic aneurysm (AAA) is most commonly defined as a maximal diameter of the abdominal aorta in excess of 3 cm in either anterior-posterior or transverse planes or, alternatively, as a focal dilation ≥ 1.5 times the diameter of the normal adjacent arterial segment. Risk factors for the development of AAA include age > 60, tobacco use, male gender, Caucasian race, and family history of AAA. Aneurysm growth and rupture risk appear to be associated with persistent tobacco use, female gender, and chronic pulmonary disease...
January 9, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29310984/comparison-of-sonographic-inferior-vena-cava-and-aorta-indexes-during-fluid-administered-in-children
#5
Yun Ang Choi, Hyuksool Kwon, Jin Hee Lee, Jae Yun Jung, Yoo Jin Choi
OBJECTIVES: This prospective, observational study evaluated changes in ultrasound measurements of the inferior vena caval index (IVCI), the aorta diameter/IVC diameter index (Ao/IVCD), and the aorta area/IVC area index (Ao/IVCA) during fluid administration in children requiring intravenous fluid administration. METHODS: Children who presented to the pediatric emergency department with symptoms of dehydration were enrolled between May 2015 and February 2016. The maximum diameter of the aorta, from inner wall to inner wall, and the long and short axis diameters of IVC were measured using a convex array transducer in the transverse view...
January 4, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29290632/congenital-cystic-adenomatoid-malformation-diagnosed-during-first-trimester-ultrasound-scan
#6
Georges A Markou, Georgios Dafereras, Christophe Poncelet
BACKGROUND Congenital cystic adenomatoid malformation (CCAM) is mostly reported from the second trimester of pregnancy. We report a case of a microcystic type of CCAM that was suggested by routine ultrasound examination at a gestational age of 12 weeks. CASE REPORT First-trimester ultrasound screening revealed the presence of a hyperechoic image that occupied the whole of the right lung, without no other any associated complications. The cardiac and aorta deviations with diaphragmatic eversion associated with a poly-hydramnios had subsequently appeared...
January 1, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29275611/-study-on-changes-of-calpain-and-myocardial-damage-in-rats-with-burn-blast-combined-injury
#7
F Xie, J K Chai, Q Hu, Y H Yu, H F Zhai, H Y Chou, S S Kang
Objective: To study myocardial damage and rules of calpain change in rats with burn-blast combined injury. Methods: One hundred and twenty-eight male SD rats were randomly divided into control group, burn group, blast group, burn-blast group, with 32 rats in each group. CONTROL GROUP: 37 degrees' warm water for 12 s; Burn group: 94 degrees' boiling water for 12 s; Blast group: 5 g cyclonite explode in 75 cm distance from left chest wall of rat; Burn-blast group: burn group and blast group combined modeling method...
December 12, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29273378/safety-and-efficacy-of-preoperative-abdominal-aortic-balloon-occlusion-in-placenta-increta-and-or-percreta
#8
Wenjuan Sun, Shuhong Duan, Gang Xin, Juan Xiao, Fanzhen Hong, Haijie Hong, Yuange Wu, Yongping Xu
BACKGROUND: With the increase of cesarean deliveries globally, the incidence of placenta adhesive disorder has been on the rise greatly which is associated closely with maternal and infant morbidity and mortality. We sought to investigate the safety and efficacy of preoperative transfemoral balloon occlusion of abdominal aorta in cesarean section of women with placenta increta or percreta. METHODS: We conducted a retrospective study of 31 patients with placenta increta or percreta diagnosed by ultrasound and/or magnetic resonance imaging...
February 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29258724/does-oral-radiocontrast-affect-image-quality-of-abdominal-sonography
#9
Christopher Dang, Eitan Dickman, Mark O Tessaro, Pranjal Patel, Maxim Dzeba, Antonios Likourezos, Illya Pushkar, Peter Homel, Lawrence E Haines
OBJECTIVE: Emergency Department patients with abdominal pain may require both an ultrasound (US) and computed tomography (CT) for an accurate diagnosis. Patients are often asked to drink oral radiocontrast while awaiting ultrasound, in order to better expedite a CT in the case of a non-diagnostic US. The impact of oral radiocontrast on US image quality has not been studied. We compared the quality of US images obtained before and after the ingestion of oral radiocontrast in healthy adult volunteers...
November 20, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29242064/hypoxia-inducible-factor-1-in-clinical-and-experimental-aortic-aneurysm-disease
#10
Wei Wang, Baohui Xu, Haojun Xuan, Yingbin Ge, Yan Wang, Lixin Wang, Jianhua Huang, Weiguo Fu, Sara A Michie, Ronald L Dalman
OBJECTIVE: Mural angiogenesis and macrophage accumulation are two pathologic hallmarks of abdominal aortic aneurysm (AAA) disease. The heterodimeric transcription factor hypoxia-inducible factor 1 (HIF-1) is an essential regulator of angiogenesis and macrophage function. In this study, we investigated HIF-1 expression and activity in clinical and experimental AAA disease. METHODS: Human aortic samples were obtained from 24 AAA patients and six organ donors during open abdominal surgery...
December 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29230417/discussion-on-the-timing-of-balloon-occlusion-of-the-abdominal-aorta-during-a-caesarean-section-in-patients-with-pernicious-placenta-previa-complicated-with-placenta-accreta
#11
Baoju Zhu, Kaili Yang, Lina Cai
Objective: This paper is aimed at investigating the role and value of the timing of balloon occlusion of the abdominal aorta during caesarean section in patients with pernicious placenta previa complicated with placenta accreta. Methods: 79 cases admitted to the Second Affiliated Hospital of Zhengzhou University from September 2015 to December 2016 were treated with ultrasound mediated abdominal aortic balloon occlusion. Among them, 42 cases, whose balloon occlusion time was selected before the delivery and transverse incision was taken, were group A...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29225000/-validity-of-the-abdominal-ecography-in-primary-care-for-detection-of-aorta-abdominal-aneurism-in-male-between-65-and-75-years
#12
Laura Bravo-Merino, Noelia González-Lozano, Ruth Maroto-Salmón, Gloria Meijide-Santos, Patricio Suárez-Gil, Ana Fañanás-Mastral
OBJECTIVE: To determine the usefulness of ultrasound examination in Primary Care (PC) for the detection of abdominal aortic aneurysm (AAA) in male patients from 65-75 years old, as well as the consistency between observers on the diagnosis between general practitioners and the reference specialty in this area, Vascular Surgery. To estimate the prevalence of AAA in that population and its association with risk factors. DESIGN: Cross-sectional descriptive study. LOCATION: Healthcare Centres of Coto and Calzada II (Gijón, Spain)...
December 7, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/29224938/subclinical-atherosclerosis-in-pediatric-liver-transplant-recipients-carotid-and-aorta-intima-media-thickness-and-their-predictors
#13
Emily R Perito, Andrew Phelps, Tabitha Vase, Vickie A Feldstein, Robert H Lustig, Philip Rosenthal
OBJECTIVE: To investigate prevalence and predictors of cardiovascular risk in pediatric liver transplant recipients using noninvasive markers of subclinical atherosclerosis: carotid intima-media thickness (cIMT) and aorta intima-media thickness (aIMT). STUDY DESIGN: Cross-sectional study of 88 pediatric liver transplant recipients. The cIMT and aIMT were measured by ultrasound imaging using standardized protocol. RESULTS: Participants were 15...
December 7, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29204239/wilkie-s-syndrome
#14
Renato Farina, Pietro Valerio Foti, Giuseppe Cocuzza, Valeria Costanzo, Giuliana Costanzo, Alessandro Conti, Alfredo Torcitto, Monica Pennisi
Superior mesenteric artery syndrome, also known as Wilkie's syndrome, is a rare vascular disease caused by the anomalous course of the superior mesenteric artery arising from the abdominal aorta with a smaller angle than the norm (<22°). The reduced angle compresses the structures situated between the aorta and the superior mesenteric artery, such as the duodenum and left renal vein; this can determine painful crises, intestinal subocclusions, and left varicocele. This syndrome can be congenital or acquired...
December 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/29187904/multimodality-imaging-of-angiogenesis-in-a-rabbit-atherosclerotic-model-by-gebp11-peptide-targeted-nanoparticles
#15
Tao Su, Ya-Bin Wang, Dong Han, Jing Wang, Shun Qi, Lei Gao, Ya-Hui Shao, Hong-Yu Qiao, Jiang-Wei Chen, Shu-Hui Liang, Yong-Zhan Nie, Jia-Yi Li, Feng Cao
Background and Aims: Angiogenesis is an important pathological process during progression of plaque formation, which can result in plaque hemorrhage and vulnerability. This study aims to explore non-invasive imaging of angiogenesis in atherosclerotic plaque through magnetic resonance imaging (MRI) and positron emission tomography (PET) by using GEBP11 peptide targeted magnetic iron oxide nanoparticles in a rabbit model of atherosclerosis. Methods: The dual-modality imaging probe was constructed by coupling 2, 3-dimercaptosuccinnic acid-coated paramagnetic nanoparticles (DMSA-MNPs) and the PET 68Ga chelator 1,4,7-triazacyclononane-N, N', N''-triacetic acid (NOTA) to GEBP11 peptide...
2017: Theranostics
https://www.readbyqxmd.com/read/29175268/peripheral-vascular-atherosclerosis-in-a-novel-pcsk9-gain-of-function-mutant-ossabaw-miniature-pig-model
#16
Ahmad F Hedayat, Kyoung-Ha Park, Taek-Geun Kwon, John R Woollard, Kai Jiang, Daniel F Carlson, Amir Lerman, Lilach O Lerman
Hypercholesterolemia is a major risk factor for atherosclerosis. Remaining challenges in the management of atherosclerosis necessitate development of animal models that mimic human pathophysiology. We characterized a novel mutant pig model with DNA transposition of D374Y gain-of-function (GOF) cDNA of chimp proprotein convertase subtilisin/kexin type-9 (PCSK9), and tested the hypothesis that it would develop peripheral vascular remodeling and target organ injury in the kidney. Wild-type or PCSK9-GOF Ossabaw miniature pigs fed a standard or atherogenic diet (AD) (n = 7 each) were studied in vivo after 3 and 6 months of diet...
November 3, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29169031/visceral-fat-index-percentage-body-fat-ratio-is-independently-associated-with-proximal-aortic-dilatation-in-a-middle-aged-and-aged-chinese-population-in-liujiang-of-guangxi
#17
Zhiyuan Jiang, Baojing Lin, Tangwei Liu, Shiyun Qin, Shan Huang, Shuang Shao, Shuo Li, Rongjie Huang, Jiangnan Huang
BACKGROUND AND AIMS: Increased volume of visceral adipose tissue is associated with worsening of cardiovascular disease risk factors that contribute to aortic dilatation. We investigated the effects of visceral fat index (VFI) and VFI/percentage body fat (PBF) ratio on proximal aortic size and proximal aortic dilatation (PAD), to assess whether excess visceral fat deposition is an independent risk factor for PAD. METHODS: 738 participants aged 35 years or more were included in this cross-sectional survey...
November 11, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29161795/superior-mesenteric-artery-syndrome-combined-with-renal-nutcracker-syndrome-in-a-young-male-a-case-report
#18
Myung Jin Oh
Superior mesenteric artery (SMA) syndrome is one of the rare causes of small bowel obstruction. It develops following a marked decrease in the angle between SMA and the abdominal aorta due to weight loss, anatomical anomalies, or following surgeries. Nutcracker syndrome in the left renal vein may also occur following a decrease in the aortomesenteric angle. Though SMA syndrome and renal nutcracker syndrome share the same pathogenesis, concurrent development has rarely been reported. Herein, we report a 23-year-old healthy male diagnosed with SMA syndrome and renal nutcracker syndrome due to severe weight reduction...
November 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29145894/inositol-in-the-management-of-abdominal-aortic-aneurysm-imagen-study-protocol-for-a-randomised-controlled-trial
#19
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/29142190/detection-of-atherosclerotic-plaques-in-the-rabbit-aorta-using-ultrasound-microbubbles-conjugated-to-interleukin-18-antibodies
#20
Zhen-Zhen Jiang, Xia-Tian Liu, Cai-Ye Ma, Cong He, Xing-Yun Li, Chuan-Lin Hou, Zu-Sheng Cheng, Guo-Yuan Xia
BACKGROUND The purpose of the study was to investigate the ability of microbubbles (MBs) targeting interleukin-18 (IL-18) to detect plaques in a rabbit atherosclerotic plaque model. MATERIAL AND METHODS A rabbit atherosclerotic plaque model was established. The locations of the atherosclerotic plaques were verified by two-dimensional scanning and color Doppler flow imaging. An IL-18 antibody was conjugated to naked MBs (MBc) using the biotin-streptavidin conjugation method, resulting in the formation of MBIL-18...
November 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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