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Duplex scan

Madathipat Unnikrishnan, Sidharth Viswanathan, K Balasubramaniam, C V Muraleedharan, Arthur Vijayan Lal, P V Mohanan, Meera Mohanty, Tirur Raman Kapilamoorthy
BACKGROUND & OBJECTIVES: Vascular illnesses are on the rise in India, due to increase in lifestyle diseases and demographic transition, requiring intervention to save life, organ or limbs using vascular prosthesis. The aim of this study was to develop indigenous large diameter vascular graft for treatment of patients with vascular pathologies. METHODS: The South India Textile Research Association, at Coimbatore, Tamil Nadu, India, developed seamless woven polyester (Polyethylene terephthalate) graft at its research wing...
June 2016: Indian Journal of Medical Research
Pinghua Ling, Jianping Lei, Huangxian Ju
In this work, we designed a nanoscaled porphyrinic metal-organic framework (PorMOF) with iron porphyrin as linker and zirconium ion as node for electrochemical detection of telomerase activity. The as-prepared PorMOF was characterized with scanning electron microscopy, powder X-ray diffraction and spectroscopic techniques, and demonstrated the excellent electrocatalytic activity towards O2 reduction. Sequentially, the functionalization of PorMOF with streptavidin results in water-stable electrochemical tracer for detection of telomerase...
October 11, 2016: Analytical Chemistry
Chandler A Long, Lucas H Timmins, Panagiotis Koutakis, Traci T Goodchild, David J Lefer, Iraklis I Pipinos, George P Casale, Luke P Brewster
OBJECTIVE: Peripheral arterial disease (PAD) is a significant age-related medical condition with limited pharmacologic options. Severe PAD, termed critical limb ischemia, can lead to amputation. Skeletal muscle is the end organ most affected by PAD, leading to ischemic myopathy and debility of the patient. Currently, there are not any therapeutics to treat ischemic myopathy, and proposed biologic agents have not been optimized owing to a lack of preclinical models of PAD. Because a large animal model of ischemic myopathy may be useful in defining the optimal dosing and delivery regimens, the objective was to create and to characterize a swine model of ischemic myopathy that mimics patients with severe PAD...
September 29, 2016: Journal of Vascular Surgery
Omar Rodriguez-Acevedo, Kristen E Elstner, Kui Martinic, Aaron Zea, Jenny Diaz, Rodrigo T Martins, Fernando Arduini, Alexandra Hodgkinson, Nabeel Ibrahim
BACKGROUND: Endovenous radio frequency ablation for small saphenous vein incompetence by and large appears to be superior and safer than conventional open surgery. Small saphenous vein ablation from approximately mid-calf to the point proximally where the small saphenous vein dives into the popliteal fossa is considered to be safe, as the sural nerve is in most cases separated from this segment of the small saphenous vein by the deep fascia. The outcome of the distal incompetent small saphenous vein remains unclear...
September 29, 2016: Phlebology
Imtiyaz Yousuf, Farukh Arjmand
New chiral reduced Schiff base ligands, L1 and L2 derived from l-/d-histidine and terepthaldehyde, and their Cu(II) and Ni(II) dinuclear complexes 1 &2 (a and b) were synthesized and thoroughly characterized by various spectroscopic techniques. Comparative binding profile of both l-/d-enantiomeric Cu(II) and Ni(II) complexes with ct-DNA was studied by employing optical and spectroscopic techniques to evaluate their enantiopreferential selectivity towards molecular target DNA and thereby explore their relative chemotherapeutic potential...
September 12, 2016: Journal of Photochemistry and Photobiology. B, Biology
Animesh Rathore, Peter Gloviczki, Haraldur Bjarnason
Persistent pain after iliac vein stenting is rare. Surgical removal of two oversized (20-mm) iliac vein stents was performed in a 36-year-old woman because of severe back pain of 2½ years' duration. Clamping or venotomy were not required for stent removal, which was done by extraction of each wire of the stent through small puncture wounds in the vein wall. Duplex scanning confirmed residual pseudointima obstructing the orifice of the right common iliac vein. The pseudointima was surgically removed. The patient recovered without complications, and her pain completely resolved...
October 2016: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Michael C Soult, Joseph C Wuamett, S Sadie Ahanchi, Christopher L Stout, Sebastian Larion, Jean M Panneton
OBJECTIVE: Duplex ultrasound (DUS) criteria are well defined for evaluating high-grade stenosis (≥70%) of the native superior mesenteric artery (SMA) and celiac artery (CA). It has been shown that native vessel criteria overestimate the degree of in-stent restenosis (ISR) and that velocity criteria for SMA and CA ISR are not well established. The objective of this study was to define DUS velocity criteria for high-grade ISR of the SMA and CA. METHODS: A retrospective review of all patients who underwent SMA or CA stenting from a single institution was performed from 2004 to 2013...
September 12, 2016: Journal of Vascular Surgery
A V Pokrovskiĭ, I M Ignat'ev, M Iu Volodiukhin, E G Gradusov
The present study was aimed at assessing initial results of hybrid operations in obstructive lesions of the iliac-femoral veins in patients with post-thrombotic disease (PTD). Hybrid operations [open endovenectomy from the common femoral vein (CFV) with creation of an arteriovenous fistula + stenting of iliac veins] were performed carried out in a total of eleven patients with PTD. Of these, there were 7 men and 4 women aged from 34 to 52 years (mean age - 42.8±7 years). All patients had severe-degree chronic venous insufficiency (CVI)...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
S V Mishenina, P G Madonov, D N Kinsht, T A Émedova, S P Zotov, M S Ufimtsev, S G Leont'ev
Within the framework of the multicenter randomized placebo-controlled double-blind clinical trial "VETTER-1" the authors carried out assessment of therapeutic efficacy and safety of oral drug Thrombovasim® possessing a thrombolytic effect in comprehensive treatment of lower-extremity deep vein thrombosis (LEDVT). The clinical study comprised a total of 154 patients. All patients received standard therapy accepted in LEDVT. The patients were subdivided into 4 groups. Patients from the three study groups received Thrombovasim® at a daily dose of 1,600, 3,200, and 4,800 IU...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
M R Kuznetsov, S V Sapelkin, B V Boldin, S G Leont'ev, L A Neskhodimov
The authors analysed the results of examination and treatment of a total of 102 patients presenting with iliofemoral venous thrombosis. During treatment, ultrasonographic duplex scanning was used to determine the localization of the proximal margin of thrombotic masses, the time of appearing of the first signs of recanalization, its degree at various levels of the deep venous system, as well as alteration in velocity of the venous blood flow in the deep veins of the lower limbs. The dynamics of clinical symptoms was assessed by the visual analogue scale...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
M I Generalov, D N Maĭstrenko, A N Oleshchuk, A S Ivanov, D A Granov, I V Ovchinnikov, A V Khmel'nitskiĭ, A V Gusinskiĭ
The authors analysed the immediate outcomes of implanting stents with bioactive coating in treatment of patients presenting with atherosclerotic lesions of the superficial femoral artery. Over the period from January 2014 to December 2015, endovascular interventions on the superficial femoral artery were carried out in a total of 18 patients (mean age 61.3±9.2 years). The implants inserted were stents with bioactive coating based on titanium oxinitride, measuring 6 to 8 mm in diameter and being from 50 to 200 mm long...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
M V Mel'nikov, V A Zelinskiĭ
The authors analysed clinical peculiarities of atherosclerosis of peripheral arteries (hereinafter referred to as APA) in patients presenting with abdominal aortic calcification (AAC). In order to determine the incidence rate of AAC in the population of patients with APA we analysed medical records of a total of 1,800 patients. The study itself included a total of 193 patients with APA further subdivided into two groups: 108 patients with AAC (Study Group) and 85 patients without AAC. Beside general clinical examination all patients were subjected to transthoracic echocardiography, duplex scanning of the aorta and lower-limb arteries, extended lipidogram and coagulogram...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
Dake Xu, Jin Xia, Enze Zhou, Dawei Zhang, Huabing Li, Chunguang Yang, Qi Li, Hai Lin, Xiaogang Li, Ke Yang
Microbiologically influenced corrosion (MIC) of 2205 duplex stainless steel (DSS) in the presence of Pseudomonas aeruginosa was investigated through electrochemical and surface analyses. The electrochemical results showed that P. aeruginosa significantly reduced the corrosion resistance of 2205 DSS. Confocal laser scanning microscopy (CLSM) images showed that the depths of the largest pits on 2205 DSS with and without P. aeruginosa were 14.0 and 4.9μm, respectively, indicating that the pitting corrosion was accelerated by P...
August 22, 2016: Bioelectrochemistry
Daphne Elisabeth Gray, Markus Eisenack, Michael Gawenda, Giovanni Torsello, Payman Majd, Jan Brunkwall, Nani Osada, Konstantinos P Donas
OBJECTIVE: The influence of endovascular aneurysm repair (EVAR) on renal function is of high concern. The question whether stent graft fixation type plays a significant role in renal outcome after EVAR is still debated. However, other factors, such as repeated contrast medium exposure, should also be considered. METHODS: We performed a two-center, stratified-cohort case control study to evaluate the influence of last-generation abdominal endografts with suprarenal (SR) vs infrarenal (IR) fixation on renal function...
August 26, 2016: Journal of Vascular Surgery
P A Stonebridge, S A Suttie, R Ross, J Dick
OBJECTIVE: Spiral laminar flow was suggested as potentially the predominant arterial blood flow pattern many years ago. Computational fluid dynamics and flow rig testing have suggested there are advantages to spiral laminar flow. The aim of this study was to identify whether spiral laminar is the predominant flow pattern in a cohort of volunteers. METHODS: This study included 42 volunteers (mean age 66.8 years). Eleven arterial sites were examined, comprising bilateral examination of the common carotid artery, internal carotid artery, external carotid artery, common femoral artery, superficial femoral artery, and the infra renal aorta...
August 26, 2016: European Journal of Vascular and Endovascular Surgery
Jahir Richard DE Oliveira, Maurício DE Amorim Aquino, Svetlana Barros, Guilherme Benjamin Brandão Pitta, Adamastor Humberto Pereira
OBJECTIVE: to determine the blood flow pattern changes after endovascular treatment of saccular abdominal aortic aneurysm with triple stent. METHODS: we conducted a hemodynamic study of seven Landrace and Large White pigs with saccular aneurysms of the infrarenal abdominal aorta artificially produced according to the technique described. The animals were subjected to triple stenting for endovascular aneurysm. We evaluated the pattern of blood flow by duplex scan before and after stent implantation...
May 2016: Revista do Colégio Brasileiro de Cirurgiões
Xiaobin Tang, Whitney Annie Long, Chang Hu, Feng Tang, Qian Wang, Lei Li
BACKGROUND: Open surgery and the retrograde endovascular approach via the distal left common carotid artery (LCCA) have some limitations in LCCA ostial stenosis treatment. The 'no touch' technique used in the renal artery was modified for this situation. METHODS: Fifteen selective LCCA stenosis patients were treated by the modified 'no touch' technique in the antegrade endovascular approach from March 2013 to March 2016. Thirteen underwent the transfemoral approach and the other two had the transbrachial approach due to a 'bovine aortic arch'...
August 19, 2016: Journal of Neurointerventional Surgery
Qiang Guo, Jichun Zhao, Bin Huang, Ding Yuan, Yi Yang, Guojun Zeng, Fei Xiong, Xiaojiong Du
PURPOSE: To analyze the literature comparing ultrasound [duplex (DUS) or contrast-enhanced (CEUS)] or magnetic resonance imaging (MRI) with computed tomography angiography (CTA) for endoleak detection and aneurysm diameter measurement after endovascular aneurysm repair (EVAR). METHODS: A systematic review identified 31 studies that included 3853 EVAR patients who had paired scans (DUS or CEUS vs CTA or MRI vs CTA) within a 1-month interval for identification of endoleaks during EVAR surveillance...
August 19, 2016: Journal of Endovascular Therapy
Loay Kabbani, Semeret Munie, Judith Lin, Mauricio Velez, Iyad Isseh, Sara Brooks, Stephanie Leix, Alexander Shepard
OBJECTIVE: To evaluate and define the expected flow pattern changes of carotid artery duplex ultrasound after LVAD placement. METHODS: Retrospective review of Henry Ford Hospital database of patients who had undergone LVAD placement between March 2008 and July 2012 was performed. All patients who had carotid artery duplex scanning before and after LVAD placement within two years of each other and showed less than 50% stenosis were included in this study. Type of waveform, carotid peak systolic velocity and end-diastolic velocities were analyzed, and the values were compared before and after LVAD placement...
August 12, 2016: Annals of Vascular Surgery
Marcus Vinícius Martins Cury, Calógero Presti, Suellen Stevam Timotheo Bonadiman, Ivan Benaduce Casella, Joseph Elias Benabou, Erasmo Simão da Silva, Nelson de Luccia, Pedro Puech-Leão
BACKGROUND: The aim of this study was to determine the impact of metabolic syndrome (MetS) on the morphology of carotid plaques, as evaluated using duplex ultrasound (DUS) with computer-assisted analysis. METHODS: In this cross-sectional observational study, we analyzed 148 carotid artery plaques in asymptomatic patients. Data were obtained via clinical and laboratory examinations, and DUS was performed by a single operator. All plaques were scanned in a longitudinal fashion, and the best segment was selected, recorded, and evaluated using dedicated software...
August 12, 2016: Annals of Vascular Surgery
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