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https://www.readbyqxmd.com/read/29155195/unreliability-of-the-duplex-scan-in-diagnosing-corporeal-venous-occlusive-disease-cvod-in-young-healthy-males-with-erectile-deficiency-ed
#1
Giorgio Cavallini, Carlo Maretti
OBJECTIVE: To define the role of cavernosal venous occlusive dysfunction (CVOD) as the only cause of erectile dysfunction (ED). MATERIALS AND METHODS: Patients meeting the CVOD criteria without any risk factors for organic ED were randomized into 2 groups; the end diastolic velocity (EDV), peak systolic velocity (PSV) and resistive index (RI) of their cavernosal arteries were assessed using color duplex Doppler ultrasound (CDDU) after intracavernous injection of Alprostadil 10 mcg (ICI)...
November 16, 2017: Urology
https://www.readbyqxmd.com/read/29150366/optimal-ultrasound-criteria-for-grading-stenosis-of-the-superficial-femoral-artery
#2
Mingjie Gao, Yang Hua, Xinyu Zhao, Lingyun Jia, Jie Yang, Beibei Liu
This retrospective study determined the duplex ultrasound scanning criteria for detecting 50%-69% and 70%-99% stenosis of the superficial femoral artery (SFA). Examinations of 278 limbs in 185 patients with peripheral arterial disease were performed. Duplex ultrasound scanning was used to measure the diameter of the vascular lumen, the peak systolic velocity (PSV) at the stenotic segment of the SFA (PSVst), the segment proximal to the stenosis (PSVpro) and the popliteal artery (PSVpop, distal to the stenosis)...
November 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29142342/prevalence-of-subclinical-peripheral-vascular-disease-in-obese-egyptian-patients
#3
Jehan Ahmed Younes, Nahla Dessoki El-Sayed, Ayman Ismail Kamel
Objective: To detect subclinical peripheral vascular disease in obese Egyptian patients and establish relations between obesity, metabolic risk factors, and PVD. Methods: This was a prospective case-control study including 100 obese patients (BMI >30) (G1). In addition, 100 age and sex matched non-obese healthy subjects as a control group (G2). Both groups were subjected to duplex ultrasound, Radionuclide muscle scan. Angiography was done for 17 patients. Results: The image pattern of 99mTc-MIBI muscles uptake was studied and perfusion reserve (PR%) was calculated in (G1) and (G2)...
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29122970/a-novel-form-of-rna-double-helix-based-on-g%C3%A2-u-and-c%C3%A2-a-wobble-base-pairing
#4
Ankur Garg, Udo Heinemann
Wobble base pairs are critical in various physiological functions and have been linked to local structural perturbations in double helical structures of nucleic acids. We report a 1.38-Å resolution crystal structure of an antiparallel octadecamer RNA double helix in overall A conformation, which includes a unique, central stretch of six consecutive wobble base pairs (W helix) with two G·U and four rare C·A(+) wobble pairs. Four adenines within the W helix are N1-protonated and wobble-base-paired with the opposing cytosine through two regular hydrogen bonds...
November 9, 2017: RNA
https://www.readbyqxmd.com/read/29102862/reno-portal-shunt-for-liver-transplant-an-alternative-inflow-for-recipients-with-grade-iii-iv-portal-vein-thrombosis-tips-for-a-better-outcome
#5
Mustafa Nazzal, Yifei Sun, Obi Okoye, Laurence Diggs, Neil Evans, Tamara Osborn, Kambiz Etesami, Chintalapati Varma
INTRODUCTION: Portal vein thrombosis (PVT) poses an extremely difficult problem in cirrhotic patients who are in need of a liver transplant. The prevalence of PVT in patients with cirrhosis ranges from 0.6% to 26% Nery et al. (2015) [1]. The presence of PVT is associated with more technically difficult liver transplant and in certain cases can be a contraindication to liver transplant. The only option for these patients with extensive PVT would be a multi-visceral transplant, the later unfortunately has a much higher morbidity and mortality compared to liver only transplant Smith et al...
October 12, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29079007/ten-year-outcome-analysis-of-the-italian-excluder-registry-with-the-gore-excluder-endograft-for-infrarenal-abdominal-aortic-aneurysms
#6
Giovanni Pratesi, Gabriele Piffaretti, Fabio Verzini, Giovanni De Blasis, Patrizio Castelli, Carlo Pratesi
OBJECTIVE: The objective of this study was to report the 10-year outcomes of the multicenter Italian Excluder Registry for elective endovascular aneurysm repair (EVAR). METHODS: A retrospective analysis of all patients who underwent elective EVAR using the Gore Excluder (W. L. Gore & Associates, Flagstaff, Ariz) endograft (EG) at four Italian centers between 1998 and 2006 was carried out. Follow-up consisted of duplex ultrasound scan and computed tomography performed at 1 month, 6 months, and 12 months and yearly thereafter...
October 24, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29075528/ultrasound-diagnostics-of-a-spontaneous-arteriovenous-fistula-of-the-head-and-neck
#7
Maria Vadimovna Zakharkina, Andrey Olegovich Chechetkin, Marina Victorovna Krotenkova, Rodion Nikolaevich Konovalov
An arteriovenous fistula is an abnormal connection between the arterial and venous systems. In the literature, there are well-described ultrasound findings of iatrogenic arteriovenous fistula as a potential complication from percutaneous transarterial or transvenous procedures. The most important sign is direct visualization of the fistula in the place of the access site. It is necessary to look for secondary signs of arterialization of the veins, which can suggest a diagnosis of an arteriovenous fistula. However, the accuracy and diagnostic quality of duplex scanning in the diagnostics of a congenital or spontaneous arteriovenous fistula of the head and neck area in adults have been poorly described in the literature...
September 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29045738/the-proposed-role-of-ultrasound-in-the-management-of-giant-cell-arteritis-in-routine-clinical-practice
#8
Sara Monti, Alberto Floris, Cristina B Ponte, Wolfgang A Schmidt, Andreas P Diamantopoulos, Claudio Pereira, Sophie Vaggers, Raashid A Luqmani
Objective: To develop and explore a protocol for using colour duplex sonography (CDS) in the routine care of GCA. Methods: We tested CDS of temporal arteries and axillary arteries (AXs) on consecutive patients with suspected or established GCA, between July 2014 and September 2016. Results: We assessed 293 patients [age 72 (10), female/male 196/97], of whom 118 had clinically confirmed GCA. Seventy-three percent of patients had already received high-dose glucocorticoids (GCs) for 17 (33) days...
October 16, 2017: Rheumatology
https://www.readbyqxmd.com/read/29042075/evolution-of-type-ii-endoleaks-based-on-different-ultrasound-identified-patterns
#9
Spyridon Monastiriotis, Ignatius Lau, Shang Loh, John Ferretti, Apostolos Tassiopoulos, Nicos Labropoulos
OBJECTIVE: The objective of this study was to delineate the specific types of waveforms that exist in type II endoleaks (T2ELs) and their effect on aneurysm sac size. METHODS: Patients who underwent an endovascular aneurysm repair and were diagnosed with a T2EL were included in the study. The flow velocity characteristics of the T2ELs were evaluated in detail with duplex ultrasound. Four different flow patterns were identified: high resistance, low flow; low resistance, low flow; low resistance, high flow; and to-fro flow...
October 14, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29037353/shortened-protocol-for-radiofrequency-ablation-of-perforator%C3%A2-veins
#10
Afsha Aurshina, Anil Hingorani, Sheila Blumberg, Ahmad Alsheekh, Natalie Marks, Amrit Hingorani, Eleanor Iadagarova, Enrico Ascher
BACKGROUND: Routine radiofrequency ablation (RFA) of an incompetent perforator vein (IPV) using the standard treatment protocol at 85°C has a treatment time of 6 minutes. To make treatment time more efficient, we sought to determine the effect of a shortened protocol for radiofrequency stylet (RFS) ablation by comparing the early success using three different temperatures: 85°C, 90°C, and 95°C. METHODS: A retrospective study examined 642 procedures of IPV closures in 255 patients with varying degrees of venous insufficiency treated with RFA from 2009 to 2015...
November 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29037350/prospective-study-of-safety-and-effectiveness-in-the-use-of-radiofrequency-ablation-for-incompetent-great-saphenous-vein-%C3%A2-12%C3%A2-mm
#11
Maday Cabrero Fernandez, Isaac Martinez Lopez, Manuela Maria Hernandez Mateo, Pablo Marques de Marino, Iñaki Cernuda Artero, Francisco Javier Serrano Hernando
OBJECTIVE: The objective of this study was to assess the outcomes of radiofrequency ablation (RFA) in incompetent great saphenous vein (GSV) according to its diameter. METHODS: This was a prospective single-center study including all patients treated with RFA from September 2014 to December 2015. The sample was divided according to the maximum GSV diameter measured on duplex ultrasound scan (A, <12 mm; B, ≥12 mm). Second-generation catheters (ClosureFast; Covidien, Mansfield, Mass) and tumescent anesthesia were used...
November 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29024684/duplex-quadruplex-oligonucleotides-role-of-the-duplex-domain-in-the-stabilization-of-a-new-generation-of-highly-effective-anti-thrombin-aptamers
#12
Irene Russo Krauss, Valeria Napolitano, Luigi Petraccone, Romualdo Troisi, Vera Spiridonova, Carlo Andrea Mattia, Filomena Sica
Recently, mixed duplex/quadruplex oligonucleotides have attracted great interest for use as biomedical aptamers. In the case of anti-thrombin aptamers, the addition of duplex-forming sequences to a G-quadruplex module identical or very similar to the best-known G-quadruplex of the Thrombin Binding Aptamer (HD1) results in new or improved biological properties, such as higher activity or different recognition properties with respect to HD1. Remarkably, this bimodular fold was hypothesized, based on its sequence, for the only anti-thrombin aptamer in advanced clinical trial, NU172...
October 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29017105/transcranial-color-coded-duplex-sonography-for-evaluation-of-midline-shift-after-chronic-subdural-hematoma-evacuation-temase-a-prospective-study
#13
Andrea Cattalani, Vincenzo Maria Grasso, Matteo Vitali, Ivan Gallesio, Lorenzo Magrassi, Andrea Barbanera
OBJECTIVE: The incidence of chronic Subdural hematoma (cSDH) is increasing and its rate of recurrence varies from 5 to 33%. A postoperative brain midline-shift (MLS) on computed tomography (CT) equal or larger than 5mm is a risk factor for recurrence. Transcranial color-coded duplex sonography (TCCDS) is a noninvasive bedside reproducible technique useful to detect MLS. The aim of our study was to compare in patients affected by cSDH, the values of MLS obtained pre- and post-operatively by TCCDS and brain CT...
November 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28992753/pelvic-vein-embolisation-of-gonadal-and-internal-iliac-veins-can-be-performed-safely-and-with-good-technical-results-in-an-ambulatory-vein-clinic-under-local-anaesthetic-alone-results-from-two-years-experience
#14
Mark S Whiteley, Chiyinde Lewis-Shiell, Sophia I Bishop, Eluned L Davis, Tim J Fernandez-Hart, Previn Diwakar, David Beckett
Objectives Pelvic vein embolisation is increasing in venous practice for the treatment of conditions associated with pelvic venous reflux. In July 2014, we introduced a local anaesthetic "walk-in walk-out" pelvic vein embolisation service situated in a vein clinic, remote from a hospital. Methods Prospective audit of all patients undergoing pelvic vein embolisation for pelvic venous reflux. All patients had serum urea and electrolytes tested before procedure. Embolisation coils used were interlock embolisation coils (Boston Scientific, USA) as they can be repositioned after deployment and before release...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28987316/bypass-for-symptomatic-in-stent-carotid-restenosis
#15
Francesco Stilo, Pasqualino Sirignano, Nunzio Montelione, Wassim Mansour, Laura Capoccia, Vincenzo Catanese, Francesco Spinelli, Francesco Speziale
BACKGROUND: To evaluate early and long-term outcomes of symptomatic patients treated for in-stent carotid restenosis (ISR) with carotid bypass (CB). METHODS: Data were retrospectively collected from a prospectively compiled database on patients treated with CB in two high-volume Italian centers between 2008 and 2016, for symptomatic high-grade ISR after CAS. After carotid endarterectomy and stent removal, a greater saphenous vein (GSV) was preferentially employed as the graft; when the GSV was not accessible, a 6mm polytetrafluoroethylene (PTFE) graft was implanted...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28958477/duplex-scan-and-histologic-assessment-of-acute-renal-injury-in-a-kidney-kidney-crosstalk-swine-experimental-model
#16
Anna Paula W Baptista Sincos, Angela Mazzeo, Igor Rafael Sincos, Felipe Coelho Neto, Nelson Wolosker, Ricardo Aun, Katia R M Leite, Vitoria Penido de Paula, Oskar G Kaufmann
OBJECTIVE: The objective of this study was to identify the effect of two left renal vasculature occlusion strategies on the duplex ultrasound-assessed rheology and histology of the contralateral kidney. METHODS: Pigs were randomly assigned to one of two groups: left renal artery-only clamping (A group, n = 8) or left renal artery and vein clamping (AV group, n = 9). Bilateral renal parenchymal biopsy specimens were taken every 10 minutes for 90 minutes. Duplex ultrasound resistive index (RI) and pulsatility index (PI) were measured...
September 25, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28956506/one-year-results-of-the-use-of-endovenous-radiofrequency-ablation-utilising-an-optimised-radiofrequency-induced-thermotherapy-protocol-for-the-treatment-of-truncal-superficial-venous-reflux
#17
George E Badham, Scott J Dos Santos, Lucinda Ba Lloyd, Judy M Holdstock, Mark S Whiteley
Background In previous in vitro and ex vivo studies, we have shown increased thermal spread can be achieved with radiofrequency-induced thermotherapy when using a low power and slower, discontinuous pullback. We aimed to determine the clinical success rate of radiofrequency-induced thermotherapy using this optimised protocol for the treatment of superficial venous reflux in truncal veins. Methods Sixty-three patients were treated with radiofrequency-induced thermotherapy using the optimised protocol and were followed up after one year (mean 16...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28888402/investigating-the-potential-of-multiwalled-carbon-nanotubes-based-zinc-nanocomposite-as-a-recognition-interface-towards-plant-pathogen-detection
#18
Muhammad Ali Tahir, Sadaf Hameed, Anam Munawar, Imran Amin, Shahid Mansoor, Waheed S Khan, Sadia Zafar Bajwa
The emergence of nanotechnology has opened new horizons for constructing efficient recognition interfaces. This is the first report where the potential of a multiwalled carbon nanotube based zinc nanocomposite (MWCNTs-Zn NPs) investigated for the detection of an agricultural pathogen i.e. Chili leaf curl betasatellite (ChLCB). Atomic force microscope analyses revealed the presence of multiwalled carbon nanotubes (MWCNTs) having a diameter of 50-100nm with zinc nanoparticles (Zn-NPs) of 25-500nm. In this system, these bunches of Zn-NPs anchored along the whole lengths of MWCNTs were used for the immobilization of probe DNA strands...
September 6, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28886989/factors-associated-with-contralateral-deep-venous-thrombosis-after-iliocaval-venous-stenting
#19
S A Khairy, R J Neves, O Hartung, G J O'Sullivan
BACKGROUND: The majority of iliac venous obstructions occur on the left side, and endovascular therapy has become the first line treatment for this condition. A left common iliac venous stent will protrude into the inferior vena cava (IVC) to some extent, thereby covering the contralateral common iliac vein (CIV) outflow. This may increase the risk of thrombosis of the contralateral iliac vein. The aim of this paper was to determine the rate of, and factors associated with, contralateral lower limb venous thrombosis after stenting, and to evaluate the results of salvage revascularisation...
September 5, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28876425/concomitant-testicular-infection-by-zika-virus-and-schistosoma-mansoni-in-a-brazilian-young-boy
#20
Leonardo Souza Alves, Cesar Estanislau, Lucio Barreto, Francisco Batista, Nivaldo Toppa
Sumary The identification of a escrotal mass without pain or report of trauma should be investigated to rule out scrotal cancer. We report the case of a young Brazilian boy who underwent orchiectomy after magnetic resonance imaging (MRI) and duplex scan (DS) indicating a high possibility of cancer. Blood exams ruled out the possibility of cancer. Testicular biopsy was not indicated. After surgery the diagnostic was extensive orchiepididymitis by Schistosoma. In endemic areas orchiepididymis by Schistosoma should be investigate to avoid unnecessary surgeries...
June 2017: Revista da Associação Médica Brasileira
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