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https://www.readbyqxmd.com/read/28316309/high-resolution-ct-angiogram-for-lower-extremity-vein-mapping
#1
Mark P Wright, Matthew R Smeds, Lonnie Wright, Ahsan T Ali
High-resolution CT angiogram (CTA) has replaced traditional diagnostic angiography as the main preoperative imaging modality for vascular surgery patients. Although the use of CTA is increasing for arterial imaging, it has not been used routinely for vein mapping. The goal of this study was to evaluate the accuracy of CTA for venous anatomy and compare it to a standard venous duplex ultrasound (DUS). When the vein was used for bypass, the quality and size of the vein were evaluated in the operating room. As part of a preoperative workup before lower extremity revascularization, 16 patients underwent a CTA followed by a DUS...
March 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28303670/a-randomized-comparison-of-modified-subcutaneous-z-stitch-versus-manual-compression-to-achieve-hemostasis-after-large-caliber-femoral-venous-sheath-removal
#2
Radoslaw Pracon, Sripal Bangalore, Jan Henzel, Iwona Cendrowska-Demkow, Barbara Pregowska-Chwala, Agnieszka Tarnowska, Zofia Dzielinska, Zbigniew Chmielak, Adam Witkowski, Marcin Demkow
OBJECTIVES: To compare subcutaneous "Z"-stitch versus manual compression in attaining hemostasis after large bore femoral venous access, and to assess its impact on venous patency. BACKGROUND: Structural interventions increasingly require large caliber venous access, for which convenient, safe, and effective method of postprocedural hemostasis is needed. "Z"-stitch has been introduced for this purpose in some centers but systematic data on its performance is limited...
March 17, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28297050/preoperative-computer-simulation-for-planning-of-vascular-access-surgery-in-hemodialysis-patients
#3
Niek Zonnebeld, Wouter Huberts, Magda M van Loon, Tammo Delhaas, Jan H M Tordoir
INTRODUCTION: The arteriovenous fistula (AVF) is the preferred vascular access for hemodialysis patients. Unfortunately, 20-40% of all constructed AVFs fail to mature (FTM), and are therefore not usable for hemodialysis. AVF maturation importantly depends on postoperative blood volume flow. Predicting patient-specific immediate postoperative flow could therefore support surgical planning. A computational model predicting blood volume flow is available, but the effect of blood flow predictions on the clinical endpoint of maturation (at least 500 mL/min blood volume flow, diameter of the venous cannulation segment ≥4 mm) remains undetermined...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28296239/stent-placement-in-the-superficial-femoral-and-proximal-popliteal-arteries-with-the-innova-self-expanding-bare-metal-stent-system
#4
Richard J Powell, Michael R Jaff, Herman Schroë, Andrew Benko, Juan Diaz-Cartelle, Stefan Müller-Hülsbeck
OBJECTIVES: The SuperNOVA trial was designed to evaluate performance of the Innova Vascular Self-Expanding Stent System (Boston Scientific, Marlborough, MA) for treating lesions in the femoropopliteal arteries. METHODS: Patients with chronic lower limb peripheral artery disease (Rutherford category 2, 3, or 4) and atherosclerotic lesions in the native superficial femoral and/or proximal popliteal artery (lengths 30-190 mm) were enrolled in this single-arm, multinational study...
March 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28290876/-circadian-clock-gene-variants-parameters-of-arterial-stiffness-and-blood-pressure-levels-in-subjects-without-arterial-hypertension
#5
V A Korneva, I V Kurbatova, L V Topchieva, S N Kolomeichuk, T Yu Kuznetsova, N N Nemova
CLOCK gene polymorphic variants, parameters of arterial stiffness and blood pressure (BP) variability were studied in 115 normotensive Russian patients without cardiovascular diseases (62 men, 53 women; mean age 36.4+/-1.01 years). Examination included ECG, 24h BP monitoring, duplex scan of carotid arteries, registration of vascular stiffness parameters, and genotyping of the following polymorphic markers of CLOCK: 3111T>C (3-untranslated region), 862T>C (exon 9) and 257T>G (promoter region) by PCR-RFLP method...
August 2016: Kardiologiia
https://www.readbyqxmd.com/read/28286359/magnetizable-stent-grafts-enable-endothelial-cell-capture
#6
Brandon J Tefft, Susheil Uthamaraj, J Jonathan Harburn, Ota Hlinomaz, Amir Lerman, Dan Dragomir-Daescu, Gurpreet S Sandhu
Emerging nanotechnologies have enabled the use of magnetic forces to guide the movement of magnetically-labeled cells, drugs, and other therapeutic agents. Endothelial cells labeled with superparamagnetic iron oxide nanoparticles (SPION) have previously been captured on the surface of magnetizable 2205 duplex stainless steel stents in a porcine coronary implantation model. Recently, we have coated these stents with electrospun polyurethane nanofibers to fabricate prototype stent-grafts. Facilitated endothelialization may help improve the healing of arteries treated with stent-grafts, reduce the risk of thrombosis and restenosis, and enable small-caliber applications...
April 1, 2017: Journal of Magnetism and Magnetic Materials
https://www.readbyqxmd.com/read/28279156/premature-atherosclerosis-in-children-with-beta-thalassemia-major-new-diagnostic-marker
#7
Laila M Sherief, Osama Dawood, Adel Ali, Hanan S Sherbiny, Naglaa M Kamal, Mohamed Elshanshory, Osama Abd Alazez, Mohamed Abd Alhady, Mohamed Nour, Wesam A Mokhtar
BACKGROUND: Early vascular alteration, atherosclerosis and coronary artery disease have emerged as important cardiovascular complications among beta-thalassemia major (B-TM) patients. The aims of the current study were to assess the prevalence of premature atherosclerosis among our B-TM patients, and to investigate the diagnostic value of serum Osteoprotegerin assay as an early biomarker for atherosclerosis. METHODS: This cross-sectional study was conducted at Hematology unit - Pediatric Department, Zagazig University Children Hospital- Egypt in the period from March 2014 to March 2015...
March 9, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28275419/early-diagnosis-and-treatment-of-coronary-heart-disease-in-symptomatic-subjects-with-advanced-vascular-atherosclerosis-of-the-carotid-artery-type-iii-and-iv-b-findings-using-ultrasound
#8
Ansgar Adams, Waldemar Bojara, Klaus Schunk
BACKGROUND: A study was conducted as to whether the early diagnosis of coronary heart disease (CHD) in symptomatic patients with advanced atherosclerosis of the carotid artery was more successful using ultrasound technology than exercise electrocardiography (ECG). METHODS: Within the scope of an occupational screening program using subjects from diverse employment sectors, people were given the opportunity to determine their risk of heart attack. During the study, the total plaque area (TPA), the maximum plaque thickness in the carotid artery and the PROCAM scores of 3,513 healthy men and 2,088 healthy women between the ages of 20 and 65 were determined...
February 2017: Cardiology Research
https://www.readbyqxmd.com/read/28255790/-contrast-enhanced-ultrasound-ceus-of-the-liver-critical-evaluation-of-use-in-clinical-routine-diagnostics
#9
K Müller-Peltzer, J Rübenthaler, M Reiser, D-A Clevert
CLINICAL/METHODICAL ISSUE: Focal liver lesions are common incidental findings in abdominal ultrasound diagnostics. STANDARD RADIOLOGICAL METHODS: Characterization of focal liver lesions solely based on b‑mode and color duplex is not feasible in all cases. METHODICAL INNOVATIONS: Using contrast-enhanced ultrasound (CEUS) it is possible to dynamically visualize the vascularization of focal liver lesions, which enables the characterization of benign and malignant liver tumors...
March 2, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28252629/-diagnosis-and-treatment-of-benign-paroxysmal-positional-vertigo-in-common-clinical-practice
#10
N V Lebedeva, M V Zamergrad, V A Parfenov, L M Antonenko
AIM: To analyze typical medical practice in managing patients with benign paroxysmal positional vertigo (BPPV). SUBJECTS AND METHODS: 33 patients (5 men and 28 women; mean age, 58 years) with BPPV who had been referred for consultation to the Medical Diagnostic Department, Clinic of Nervous Diseases, I.M. Sechenov First Moscow State Medical University, regarding for vertigo, were examined. Information about the disease before visiting the clinic, such as the duration of vertigo, its pattern, and triggers, previously established diagnoses, prescribed treatment and its efficacy, concomitant diseases, was analyzed...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28224925/diabetes-mellitus-is-a-coronary-heart-disease-risk-equivalent-for-peripheral-vascular-disease
#11
Jonathan D Newman, Caron B Rockman, Mikhail Kosiborod, Yu Guo, Hua Zhong, Howard S Weintraub, Arthur Z Schwartzbard, Mark A Adelman, Jeffrey S Berger
Diabetes mellitus (diabetes) is associated with significantly increased risk of peripheral vascular disease. Diabetes is classified as a coronary heart disease (CHD) risk equivalent, but it is unknown whether diabetes is a CHD risk equivalent for peripheral vascular disease. The objective was to evaluate the odds of peripheral arterial disease (PAD) or carotid artery stenosis (CAS) among participants with diabetes, CHD, or both, compared with participants without diabetes or CHD, in a nationwide vascular screening database...
February 2017: American Heart Journal
https://www.readbyqxmd.com/read/28222987/french-multicenter-experience-with-the-gore-tigris-vascular-stent-in-superficial-femoral-and-popliteal-arteries
#12
Maxime Sibé, Adrien Kaladji, Claire Boirat, Alain Cardon, Xavier Chaufour, Jean-Pierre Bossavy, Bertrand Saint-Lebes
BACKGROUND: Preliminary results in small single-center studies after stenting with the GORE TIGRIS Vascular Stent (W. L. Gore & Associates, Flagstaff, Ariz) show promising short-term primary patency rates, but larger, multicenter studies are needed. This study therefore investigated the performance of the GORE TIGRIS Vascular Stent at three different centers in France in patients with symptomatic peripheral artery disease. METHODS: This retrospective, single-arm, multicenter cohort study included 215 patients with peripheral artery disease (Rutherford-Becker category 2-6) who were treated with the GORE TIGRIS Vascular Stent, a dual-component stent consisting of a nitinol wire frame combined with a fluoropolymer-interconnecting structure...
February 17, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28216351/the-fate-of-endovascular-aortic-aneurysm-repair-after-5%C3%A2-years-monitored-with-duplex-ultrasound-imaging
#13
Danielle M Pineda, Zachary M Phillips, Keith D Calligaro, Emilia Krol, Matthew J Dougherty, Douglas A Troutman, Alan Dietzek
BACKGROUND: Interventions for aortic aneurysm sac growth have been reported across multiple time points after endovascular aortic aneurysm repair (EVAR). We report the long-term outcomes of patients after EVAR monitored with duplex ultrasound (DUS) imaging with respect to the need for and type of intervention after 5 years. METHODS: We report a series of patients who were monitored with DUS imaging for a minimum of 5 years after EVAR. DUS imaging was performed in an accredited noninvasive vascular laboratory, and computed tomography angiography was only performed for abnormal DUS findings...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28214484/hybrid-operative-thrombectomy-is-noninferior-to-percutaneous-techniques-for-the-treatment-of-acute-iliofemoral-deep-venous-thrombosis
#14
Limael E Rodríguez, Aihab Aboukheir-Aboukheir, Ricardo Figueroa-Vicente, Hiram Soler-Bernardini, Guillermo Bolanos-Avila, Luis J Torruella-Bartolomei, Anthony J Comerota, Jorge L Martinez-Trabal
OBJECTIVE: Hybrid operative thrombectomy (HOT) is a novel technique for the treatment of acute iliofemoral deep venous thrombosis (IFDVT) and is an alternative to percutaneous techniques (PTs) that use thrombolytics. In this study, we compare perioperative and intermediate outcomes of HOT vs PT as interventions for early thrombus removal. METHODS: From July 2008 to May 2015, there were 71 consecutive patients who were treated with either PT (n = 31) or HOT (n = 40) for acute or subacute single-limb IFDVT...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28211004/point-of-care-ultrasound-and-doppler-ultrasound-evaluation-of-vascular-injuries-in-penetrating-and-blunt-trauma
#15
REVIEW
Miguel Angel Montorfano, Fernando Pla, Leonardo Vera, Omar Cardillo, Stefano Geniere Nigra, Lisandro Miguel Montorfano
BACKGROUND: The aim of this study is to describe point-of-care ultrasound and Color flow Duplex Doppler characteristics of penetrating and blunt trauma-related vascular injuries of the limbs and neck. METHODS: Penetrating and blunt trauma-related vascular injuries such as vein disruption, intimal flap, deep vein thrombosis, arterial dissection, pseudoaneurysm, and arteriovenous fistulae are discussed in this manuscript. Images of the most significant lesions of our personal clinical experience are presented to illustrate point-of-care ultrasound and Color flow Duplex Doppler ultrasound findings...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28202017/association-between-metformin-use-and-below-the-knee-arterial-calcification-score-in-type-2-diabetic-patients
#16
Aurélien Mary, Agnes Hartemann, Sophie Liabeuf, Carole Elodie Aubert, Salim Kemel, Joe Elie Salem, Philippe Cluzel, Aurélie Lenglet, Ziad A Massy, Jean-Daniel Lalau, Romuald Mentaverri, Olivier Bourron, Saïd Kamel
BACKGROUND: Vascular calcification (VC) is common in type 2 diabetes, and is associated with cardiovascular complications. Recent preclinical data suggest that metformin inhibits VC both in vitro and in animal models. However, metformin's effects in patients with diabetic VC have not previously been characterized. The present study investigated the association between metformin use and lower-limb arterial calcification in patients with type 2 diabetes and high cardiovascular risk. METHODS: The DIACART cross-sectional cohort study included 198 patients with type 2 diabetes but without severe chronic kidney disease...
February 15, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28185650/usefulness-of-a-systematic-screening-of-carotid-atherosclerosis-in-asymptomatic-people-with-type%C3%A2-2-diabetes-for-cardiovascular-risk-reclassification
#17
Marjorie Helfre, Claire Grange, Benjamin Riche, Delphine Maucort-Boulch, Charles Thivolet, Julien Vouillarmet
AIMS: Routine screening of carotid atherosclerosis lesions is frequently suggested for people with type 2 diabetes, the presence of a carotid lesion being associated with a significant increase risk for vascular events. However, the impact of this strategy on medical management is not validated. We herein question the usefulness of such screening. METHODS: We assessed the prevalence and severity of carotid lesions in 337 consecutive people with type 2 diabetes without known cardiovascular disease who underwent a systematic carotid duplex ultrasonography...
February 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28143930/oxidative-dna-damage-is-epigenetic-by-regulating-gene-transcription-via-base-excision-repair
#18
Aaron M Fleming, Yun Ding, Cynthia J Burrows
Reactive oxygen species (ROS) have emerged as important cellular-signaling agents for cellular survival. Herein, we demonstrate that ROS-mediated oxidation of DNA to yield 8-oxo-7,8-dihydroguanine (OG) in gene promoters is a signaling agent for gene activation. Enhanced gene expression occurs when OG is formed in guanine-rich, potential G-quadruplex-forming sequences (PQS) in promoter-coding strands, initiating base excision repair (BER) by 8-oxoguanine DNA glycosylase (OGG1), yielding an abasic site (AP). The AP enables melting of the duplex to unmask the PQS, adopting a G-quadruplex fold in which apurinic/apyrimidinic endonuclease 1 (APE1) binds, but inefficiently cleaves, the AP for activation of vascular endothelial growth factor (VEGF) or endonuclease III-like protein 1 (NTHL1) genes...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28132743/editor-s-choice-factors-associated-with-long-term-outcome-in-191-patients-with-ilio-femoral-dvt-treated-with-catheter-directed-thrombolysis
#19
P Foegh, L P Jensen, L Klitfod, R Broholm, N Bækgaard
OBJECTIVE: To identify factors associated with long-term treatment success after catheter-directed thrombolysis (CDT) for acute deep venous thrombosis (DVT) involving the ilio-femoral vein. MATERIAL AND METHODS: This was a non-randomised observational cohort study. From 1999 to 2013, 191 consecutive patients (203 limbs) attending a tertiary vascular centre at Gentofte University Hospital, Denmark underwent CDT. All patients had ultrasonically verified acute ilio-femoral DVT with open distal popliteal vein and calf veins...
March 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28131087/emergency-color-doppler-sonography-of-the-extremity-artery-a-pictorial-essay
#20
Kevin Mennitt, Madhvi Deol, Jing Gao
Arterial color duplex sonography (CDUS) of the extremities is routinely analyzed in the field of emergency radiology. A retrospective review of 500 consecutive arterial CDUS extremity studies was performed in our emergency department. Abnormal CDUS examinations were classified into two groups according to their primary etiology: 1) traumatic arterial injuries (accidents or post-operative complications) and 2) acute arterial ischemia (thrombosis or embolism outside of the setting of acute trauma). This article reviews common CDUS imaging findings in a busy emergency radiology division including traumatic pseudoaneurysm, secondary pseudoaneurysm, arteriovenous fistula, acute ischemic arterial disease and chronic peripheral arterial disease...
January 15, 2017: Clinical Imaging
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