keyword
MENU ▼
Read by QxMD icon Read
search

Doppler ultrasound arteriovenous fistula

keyword
https://www.readbyqxmd.com/read/30423988/a-portable-wireless-photoplethysomography-sensor-for-assessing-health-of-arteriovenous-fistula-using-class-weighted-support-vector-machine
#1
Paul C-P Chao, Pei-Yu Chiang, Yung-Hua Kao, Tse-Yi Tu, Chih-Yu Yang, Der-Cherng Tarng, Chin-Long Wey
A portable, wireless photoplethysomography (PPG) sensor for assessing arteriovenous fistula (AVF) by using class-weighted support vector machines (SVM) was presented in this study. Nowadays, in hospital, AVF are assessed by ultrasound Doppler machines, which are bulky, expensive, complicated-to-operate, and time-consuming. In this study, new PPG sensors were proposed and developed successfully to provide portable and inexpensive solutions for AVF assessments. To develop the sensor, at first, by combining the dimensionless number analysis and the optical Beer Lambert's law, five input features were derived for the SVM classifier...
November 9, 2018: Sensors
https://www.readbyqxmd.com/read/30383654/application-of-ultrasonography-in-monitoring-the-complications-of-autologous-arteriovenous-fistula-in-hemodialysis-patients
#2
Chong Ren, Jing Chen, Yong Wang, Bihong Huang, Wenwen Lu, Yanpei Cao, Xiaoli Yang
This study aims to evaluate the application of color Doppler ultrasound in monitoring the complications of autologous arteriovenous fistula in hemodialysis patients.Patients with maintenance hemodialysis who underwent autologous arteriovenous fistula were enrolled in this cross-sectional study. Ultrasound was used to detect fistula complications (stenosis and thrombosis), brachial artery diameter, and hemodynamic parameters. The ultrasound parameters were analyzed and screened to identify the most important indicator for monitoring complications...
November 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30335925/embolization-of-iatrogenic-renal-arteriovenous-fistula-a-case-report
#3
Ewa Kuklik, Krzysztof Pyra, Łukasz Światłowski, Maryla Kuczyńska, Jan Sobstyl, Anna Drelich-Zbroja, Tomasz Jargiełło, Maria Tsitskari, Małgorzata Szczerbo-Trojanowska
Renal artery pseudoaneurysms and arteriovenous fistulae most often occur as an iatrogenic complication. The article discusses a case of a patient diagnosed with an arteriovenous fistula and a pseudoaneurysm. A 64-year-old woman was admitted to the hospital due to nonspecific pain in the lumbar region. Imaging showed a typical picture of clear cell renal carcinoma. The patient was qualified for surgical treatment. After tumor resection, the patient developed microhematuria. Arteriovenous fistula and renal pseudoaneurysm were diagnosed using Doppler and computed tomography scans...
2018: Journal of Ultrasonography
https://www.readbyqxmd.com/read/30335924/diagnosis-and-treatment-of-posttraumatic-arteriovenous-fistula-in-the-lower-leg-a-case-report
#4
Jan Sobstyl, Maryla Kuczyńska, Ewa Kuklik, Łukasz Światłowski, Maria Tsitskari, Tomasz Jargiełło
External injuries are one of the common reasons for reporting to hospital emergency departments. Peripheral vascular injuries occur in up to about 25% of upper and lower extremity injury cases. Arteriovenous fistula is a type of arterial injury. Doppler ultrasound is currently the primary diagnostic method for vascular injuries as it allows for the implementation of appropriately targeted treatment, indicating the potential need for extended diagnosis or patient qualification for endovascular or classical surgery...
2018: Journal of Ultrasonography
https://www.readbyqxmd.com/read/30335915/ultrasound-guided-thrombin-injection-in-the-management-of-pseudoaneurysm-after-percutaneous-arterial-access
#5
Tomasz Jargiełło, Jan Sobstyl, Łukasz Światłowski, Maryla Kuczyńska, Ewa Kuklik, Michał Sojka, Anna Drelich-Zbroja, Maciej Pech, Maciej Powerski
AIM: The purpose of this paper was to evaluate the efficacy of ultrasound-guided percutaneous thrombin injection as a treatment method for arterial access site pseudoaneurysm. MATERIALS AND METHODS: A total of 148 patients with iatrogenic arterial access site pseudoaneurysms were treated in the Department of Interventional Radiology and Neuroradiology, Medical University of Lublin. Of those, 142 pseudoaneurysms were located in the common femoral artery, 3 in the brachial artery and the remaining 3 in the radial artery...
2018: Journal of Ultrasonography
https://www.readbyqxmd.com/read/30166657/observational-study-of-the-efficacy-of-supraclavicular-brachial-plexus-block-for-arteriovenous-fistula-creation
#6
Selvakumar Palaniappan, Venkatesh Subbiah, V Raja Gopalan, Poornima Vijaya Kumar, R John Santa Vinothan
Background and Aims: Arteriovenous (AV) fistula surgery is commonly performed for AV access for hemodialysis. However the ideal anaesthetic technique of choice remains debated. We aimed to assess operative conditions, vascular patency, and complication rate following AV fistula surgery with isolated brachial plexus block among end-stage renal disease (ESRD) patients. Methods: This prospective, observational study included 214 patients undergoing AV fistula surgery under isolated supraclavicular brachial plexus block between January and December 2017...
August 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/30165791/treatment-of-juxta-anastomotic-stenoses-for-failing-distal-radiocephalic-arteriovenous-fistulas-drug-coated-balloons-versus-angioplasty
#7
Domenico Patanè, Giovanni Failla, Giovanni Coniglio, Giorgio Russo, Walter Morale, Giuseppe Seminara, Giacomo Calcara, Paola Bisceglie, Pierantonio Malfa
The aim of our study is to report the results of two types (type A, type B) paclitaxel drug-coated balloon compared with standard percutaneous transluminal angioplasty in the treatment of juxta-anastomotic stenoses of mature but failing distal radiocephalic hemodialysis arteriovenous fistulas. Two groups of 26 and 44 patients treated with two different drug-coated balloon are compared with a control group of 86 treated with standard percutaneous transluminal angioplasty. A color Doppler ultrasound was performed to evaluate stenosis and for treatment planning...
August 30, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/30141363/studying-alternative-approaches-for-placement-of-cuffed-hemodialysis-catheters-in-hemodialysis-patients-with-bilateral-internal-jugular-vein-occlusion
#8
Zaghloul Elsafy Gouda, Mahmoud Mohamed Emara, Hany Said Elbarbary, Mahmoud Abdel Aziz Koura, Ahmed Rabie Elarbagy
INTRODUCTION: Internal jugular vein occlusion often makes necessary the use of less desirable routes as external jugular, subclavian, and femoral vein approaches in addition to inferior vena cava approaches. This a prospective cross-sectional follow-up study of the alternative approaches for placement of cuffed hemodialysis catheters in end-stage renal disease patients with bilateral internal jugular vein occlusion from the interventional nephrology point of view. METHOD: The study was conducted on 134 end-stage renal disease patients who were referred for insertion of a challenging hemodialysis catheter due to bilateral internal jugular vein occlusion...
August 24, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/30122778/-congenital-renal-arteriovenous-fistula-complicated-with-multiple-renal-arteries-malformation-case-analysis
#9
L P Yu, W H Zhao, S J Liu, Q Li, T Xu
Congenital renal arteriovenous fistula complicated with multiple renal arteries malformation is rare and hard to diagnose at early stage. Blood loss and complications after embolization are both severe. Some cases can be diagnosed by ultrasound, enhanced CT scan or digital subtraction angiography (DSA). Cystoscopy and ureteroscopy can identify the location of bleeding, exclude tumors, and discharge ureteral obstruction. A case of congenital renal arteriovenous fistula complicated with multiple renal arteries malformation was reported to investigate the pathogenesis, clinical characteristics, diagnosis and treatment of congenital renal arteriovenous fistula with multiple renal arteries malformation...
August 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29930667/klippel-trenaunay-and-parkes-weber-syndromes-two-case-reports
#10
Carlos Alberto Araujo Chagas, Lucas Alves Sarmento Pires, Marcio Antonio Babinski, Tulio Fabiano de Oliveira Leite
Parkes-Weber syndrome is a congenital vascular disease that comprises capillary, venous, lymphatic, and arteriovenous malformations. Although Parkes-Weber syndrome is a clinically distinct entity with serious complications, it is still frequently misdiagnosed as Klippel-Trenaunay syndrome, which consists of a triad of malformations involving the capillary, venous, and lymphatic vessels, without arteriovenous fistulas. Both syndromes are generally diagnosed with Doppler ultrasound and confirmed by magnetic resonance angiography...
October 2017: Jornal vascular brasileiro
https://www.readbyqxmd.com/read/29903522/vascular-access-clinic-results-before-and-after-implementing-a-multidisciplinary-approach-adding-routine-doppler-ultrasound
#11
Inés Aragoncillo Sauco, José Manuel Ligero Ramos, Almudena Vega Martínez, Ángel Luis Morales Muñoz, Soraya Abad Estébanez, Nicolás Macías Carmona, Diego Ruiz Chiriboga, Rosario García Pajares, Teresa Cervera Bravo, Juan Manuel López-Gómez, Soledad Manzano Grossi, Elena Menéndez Sánchez, Javier Río Gomez, Ana María García Prieto, Tania Linares Grávalos, Fernando Garcia Boyano, Luis Manuel Reparaz Asensio, Marta Albalate Ramón, Patricia de Sequera Ortiz, Beatriz Gil Casares, Jara Ampuero Mencía, Sandra Castellano, Belén Martín Pérez, José Luís Martín Conty, Alba Santos Garcia, José Luño Fernandez
BACKGROUND: A multidisciplinary approach and Doppler ultrasound (DU) assessment for the creation and maintenance of arteriovenous fistulas (AVF) for haemodialysis can improve prevalence and patency. The aim of this study was to analyse the impact of a new multidisciplinary vascular access (VA) clinic with routine DU. MATERIAL AND METHODS: We analysed the VA clinic results from 2014 and 2015, before and after the implementation of a multidisciplinary team protocol (vascular surgeon/nephrologist) with routine DU in preoperative mapping and prevalent AVF...
November 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29779960/comparison-of-hemodialysis-arteriovenous-fistula-blood-flow-rates-measured-by-doppler-ultrasound-and-phase-contrast-magnetic-resonance-imaging
#12
Yong He, Yan-Ting Shiu, Daniel B Pike, Prabir Roy-Chaudhury, Alfred K Cheung, Scott A Berceli
OBJECTIVE: The objective of this study was to compare blood flow rates measured by Doppler ultrasound (DUS) and phase-contrast magnetic resonance imaging (MRI) in patients having a hemodialysis arteriovenous fistula (AVF) and to identify scenarios in which there was significant discordance between these two approaches. METHODS: Blood flow rates in the proximal artery (PA) and draining vein (DV) of newly created upper extremity AVFs were measured and compared using DUS and phase-contrast MRI at 1 day, 6 weeks, and 6 months postoperatively...
December 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29701413/true-brachial-artery-aneurysm-in-a-patient-with-vascular-access-for-haemodialysis-and-kidney-graft
#13
Mafalda Correia, André Marinho, Carolina Mendes, Luís Antunes, Óscar Gonçalves
INTRODUCTION: True brachial artery aneurysms are rare and some of them have been described as a late complication in patients with vascular access for haemodialysis and kidney graft. The purpose of this paper is to present a clinical case of a patient with a true brachial artery aneurysm and its following treatment. METHODS: This case concerns a caucasian male patient with 43 years old who had vesicoureteral reflux at 7 years old, and subsequent end-stage renal disease, and started on haemodialysis at the age of twelve...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29680297/early-results-of-percutaneous-arteriovenous-fistula-creation-with-the-ellipsys-vascular-access-system
#14
Alexandros Mallios, William C Jennings, Benoit Boura, Alessandro Costanzo, Pierre Bourquelot, Myriam Combes
OBJECTIVE: We reviewed our initial experience creating a percutaneous arteriovenous fistula (pAVF) using a thermal resistance anastomosis device with proximal radial artery inflow. METHODS: A retrospective review was conducted of all patients who underwent a pAVF creation procedure between May 2017 and October 2017. Primary end points of the study were technical success, patency by Doppler ultrasound examination or angiography, flow levels achieved, time to first use, and pAVF-related complications...
April 18, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29675625/multidetector-ct-of-iatrogenic-and-self-inflicted-vascular-lesions-and-infections-at-the-groin
#15
REVIEW
Massimo Tonolini, Anna Maria Ierardi, Gianpaolo Carrafiello, Domenico Laganà
The number and complexity of endovascular procedures performed via either arterial or venous access are steadily increasing. Albeit associated with higher morbidity compared to the radial approach, the traditional common femoral artery remains the preferred access site in a variety of cardiac, aortic, oncologic and peripheral vascular procedures. Both transarterial and venous cannulation (for electrophysiology, intravenous laser ablation and central catheterisation) at the groin may result in potentially severe vascular access site complications (VASC)...
August 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29577802/diameter-of-inflow-as-a-predictor-of-radiocephalic-fistula-flow
#16
Lukas K Kairaitis, James P Collett, Jan Swinnen
INTRODUCTION: The optimal method for vascular access surveillance is largely unknown. A previous case-control study suggested a simplified anatomical measure obtained by Doppler ultrasound-the narrowest segment of the circuit or "minimal luminal diameter" may identify patients with a dysfunctional radiocephalic arteriovenous fistula. The relationship between minimal luminal diameter and access flow (Qa) in the radiocephalic arteriovenous fistula has not previously been studied...
March 1, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29544403/dialysis-arteriovenous-access-monitoring-and-surveillance-according-to-the-2017-spanish-guidelines
#17
REVIEW
Ramon Roca-Tey, José Ibeas, Teresa Moreno, Enrique Gruss, José Luis Merino, Joaquín Vallespín, David Hernán, Patricia Arribas
The Spanish Multidisciplinary Group on Vascular Access (GEMAV), which includes experts from the five scientific societies involved (nephrology (S.E.N.), vascular surgery (SEACV), interventional radiology (SERAM-SERVEI), infectious diseases (SEIMC), and nephrology nursing (SEDEN)), along with the methodological support of the Iberoamerican Cochrane Centre, has developed the Spanish Clinical Guidelines on Vascular Access for Hemodialysis. This article summarizes the main issues from the guideline's chapter entitled "Monitoring and surveillance of arteriovenous access...
September 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29511569/vascular-access-practice-patterns-in-canada-a-national-survey
#18
Chance Dumaine, Mercedeh Kiaii, Lisa Miller, Louise Moist, Matthew J Oliver, Charmaine E Lok, Swapnil Hiremath, Jennifer M MacRae
Background: One of the mandates of the Canadian Society of Nephrology's (CSN) Vascular Access Working Group (VAWG) is to inform the nephrology community of the current status of vascular access (VA) practice within Canada. To better understand VA practice patterns across Canada, the CSN VAWG conducted a national survey. Objectives: (1) To inform on VA practice patterns, including fistula creation and maintenance, within Canada. (2) To determine the degree of consensus among Canadian clinicians regarding patient suitability for fistula creation and to assess barriers to and facilitators of fistula creation in Canada...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29510811/evaluation-of-new-ultrasound-techniques-for-clinical-imaging-in-selected-liver-and-vascular-applications
#19
REVIEW
Andreas Hjelm Brandt
This PhD project is based on a longstanding collaboration between physicists and engineers from the Center of Fast Ultrasound Imaging (CFU) at the Technical University of Denmark and medical doctors from the department of Radiology at Rigshospitalet. The intent of this cooperation is to validate new ultrasonic methods for future clinical use. 
Study I compares two B-mode ultrasound methods: the new experimental technique Synthetic Aperture Sequential Beam-forming combined with Tissue Harmonic Imaging (SASB-THI), and a conventional technique combined with THI...
March 2018: Danish Medical Journal
https://www.readbyqxmd.com/read/29410373/integration-of-real-time-intraoperative-contrast-enhanced-ultrasound-and-color-doppler-ultrasound-in-the-surgical-treatment-of-spinal-cord-dural-arteriovenous-fistulas
#20
Giuseppe Maria Della Pepa, Giovanni Sabatino, Carmelo Lucio Sturiale, Enrico Marchese, Alfredo Puca, Alessandro Olivi, Alessio Albanese
BACKGROUND: In the surgical treatment of spinal dural arteriovenous fistulas (DAVFs), intraoperative definition of anatomic characteristics of the DAVF and identification of the fistulous point is mandatory to effectively exclude the DAVF. CASE DESCRIPTION: Intraoperative ultrasound and contrast-enhanced ultrasound integrated with color Doppler ultrasound was applied in the surgical setting for a cervical DAVF to identify the fistulous point and evaluate correct occlusion of the fistula...
April 2018: World Neurosurgery
keyword
keyword
164647
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"