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https://www.readbyqxmd.com/read/28643860/subcutaneous-defibrillators-for-dialysis-patients
#1
REVIEW
Tushar J Vachharajani, Loay Salman, Eric J Costanzo, Sushil K Mehandru, Mayurkumar Patel, Dawn M Calderon, Roy O Mathew, Mandeep S Sidhu, Arif Asif
Defibrillation can be successfully provided by the subcutaneous implantable cardioverter defibrillator (ICD) without the leads. In contrast, traditional ICDs require leads that can cause central venous stenosis, lead-induced endocarditis, and carry the risk of tricuspid regurgitation by valve adhesion, perforation, coaptation interference, or entanglement. Central venous stenosis, infection, and tricuspid regurgitation are all critically important considerations in hemodialysis patients. Recent reports are supporting the use of subcutaneous ICDs in renal patients maintained on long-term hemodialysis...
June 23, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28560487/effect-of-venous-stenting-on-intracranial-pressure-in-idiopathic-intracranial-hypertension
#2
Samir A Matloob, Ahmed K Toma, Simon D Thompson, Chee L Gan, Fergus Robertson, Lewis Thorne, Laurence D Watkins
BACKGROUND: Idiopathic intracranial hypertension (IIH) is characterised by an increased intracranial pressure (ICP) in the absence of any central nervous system disease or structural abnormality and by normal CSF composition. Management becomes complicated once surgical intervention is required. Venous sinus stenosis has been suggested as a possible aetiology for IIH. Venous sinus stenting has emerged as a possible interventional option. Evidence for venous sinus stenting is based on elimination of the venous pressure gradient and clinical response...
May 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28500364/radiologists-need-to-be-aware-of-secondary-central-venous-stenosis-in-patients-with-sapho-syndrome
#3
Mizuho Suzuki, Hidenori Kanazawa, Takeshi Shinozaki, Hideharu Sugimoto
OBJECTIVES: We aimed to define central venous stenosis (CVS) caused by sternocostoclavicular hyperostosis as a feature of synovitis-acne-pustulosis-hyperostosis-osteitis (SAPHO) syndrome on routine contrast-enhanced computed tomography (CT) images. The relationship between SAPHO syndrome and CVS without venous thrombosis caused by anterior chest wall compression has not been investigated. Therefore, the present study evaluated CVS in patients with SAPHO syndrome at our hospital. METHODS: We retrospectively reviewed contrast-enhanced CT images of ten patients with suspected or diagnosed SAPHO syndrome between January 2007 and November 2015...
May 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28434662/paclitaxel-coated-balloons-for-the-treatment-of-symptomatic-central-venous-stenosis-in-dialysis-access-results-from-a-randomized-controlled-trial
#4
Panagiotis M Kitrou, Panagiotis Papadimatos, Stavros Spiliopoulos, Konstantinos Katsanos, Nicolaos Christeas, Elias Brountzos, Dimitrios Karnabatidis
PURPOSE: To compare the clinically-assessed intervention-free period (IFP) of paclitaxel-coated balloon (PCB) vs conventional balloon angioplasty (CBA) for the treatment of symptomatic central venous stenosis (CVS) in dialysis access. MATERIALS AND METHODS: Within 20 months, 40 dialysis patients (19/40 arteriovenous fistulae [AVFs] and 21/40 arteriovenous grafts [AVGs]) were randomized to undergo angioplasty either with a PCB (PCB group, n = 20; 14/20 male; age: 56...
April 20, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28430317/treatment-of-central-venous-in-stent-restenosis-with-repeat-stent-deployment-in-hemodialysis-patients
#5
James Ronald, Bradley Davis, Carlos J Guevara, Waleska M Pabon-Ramos, Tony P Smith, Charles Y Kim
PURPOSE: To report patency rates for stent deployment for treatment of in-stent stenosis of the central veins of the chest in hemodialysis patients. MATERIALS AND METHODS: A retrospective analysis was performed on 29 patients who underwent 35 secondary percutaneous transluminal stent (PTS) deployments for in-stent stenosis within the central veins that were refractory to angioplasty and ipsilateral to a functioning hemodialysis access (in-stent PTS group). For comparison, patency data were acquired for 47 patients who underwent 78 successful percutaneous transluminal angioplasty (PTA) procedures for in-stent stenosis (in-stent PTA group) and 55 patients who underwent 55 stent deployments within native central vein stenosis refractory to angioplasty (native vein PTS group)...
April 20, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28430315/adding-access-blood-flow-surveillance-reduces-thrombosis-and-improves-arteriovenous-fistula-patency-a-randomized-controlled-trial
#6
Inés Aragoncillo, Soraya Abad, Silvia Caldés, Yésika Amézquita, Almudena Vega, Antonio Cirugeda, Cristina Moratilla, José Ibeas, Ramón Roca-Tey, Cristina Fernández, Nicolás Macías, Borja Quiroga, Ana Blanco, Maite Villaverde, Caridad Ruiz, Belén Martín, Asunción M Ruiz, Jara Ampuero, Fernando de Alvaro, Juan M López-Gómez
PURPOSE: Stenosis is the main cause of arteriovenous fistula (AVF) failure. It is still unclear whether surveillance based on vascular access blood flow (QA) enhances AVF function and longevity. METHODS: We conducted a three-year follow-up randomized, controlled, multicenter, open-label trial to compare QA-based surveillance and pre-emptive repair of subclinical stenosis with standard monitoring/surveillance techniques in prevalent mature AVFs. AVFs were randomized to either the control group (surveillance based on classic alarm criteria; n = 104) or to the QA group (QA measured quarterly using Doppler ultrasound [M-Turbo®] and ultrasound dilution [Transonic®] added to classic surveillance; n = 103)...
April 20, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28415162/value-of-doppler-evaluation-of-physically-abnormal-fistula-hemodynamic-guidelines-and-access-outcomes
#7
Seong Cho, Yu-Ji Lee, Sung-Rok Kim
Background/Aims: The strategy of access care at out center involves the use of ultrasound (USG) in case of physical examination (PE) abnormality. USG determines the need of angiography. This study investigated the possible association between the need for percutaneous transluminal angioplasty (PTA) and hemodynamic parameters of USG. The study also assessed the effects of this monitoring strategy on outcomes in comparison with a historical control. Methods: A retrospective study of the medical records of 127 patients (65 PTA, 62 non-PTA) was conducted...
April 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28393000/clinical-experience-with-ultrasound-guided-angioplasty-for-vascular-access
#8
Seong Cho, Yu-Ji Lee, Sung-Rok Kim
BACKGROUND: The use of ultrasound guided percutaneous transluminal angioplasty (UG-PTA), which use ultrasound as an imaging modality, is an evolving strategy. But, in Korea, this method is rarely used. We report our experiences with UG-PTA with respect to technical success rates and complication rates compared to conventional PTA (C-PTA), performed between 2010 and 2015 at Samsung Changwon Hospital, Korea. METHODS: In our series, 53 cases of UG-PTA and 90 cases of C-PTA were reviewed, respectively...
March 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28346468/endoluminal-dilatation-for-embedded-hemodialysis-catheters-a-case-control-study-of-factors-associated-with-embedding-and-clinical-outcomes
#9
Hari Talreja, Stephen Edward Ryan, Janet Graham, Manish M Sood, Adnan Hadziomerovic, Edward Clark, Swapnil Hiremath
BACKGROUND: With the increasing frequency of tunneled hemodialysis catheter use there is a parallel increase in the need for removal and/or exchange. A small but significant minority of catheters become embedded or 'stuck' and cannot be removed by traditional means. Management of embedded catheters involves cutting the catheter, burying the retained fragment with a subsequent increased risk of infections and thrombosis. Endoluminal dilatation may provide a potential safe and effective technique for removing embedded catheters, however, to date, there is a paucity of data...
2017: PloS One
https://www.readbyqxmd.com/read/28341509/dialysis-access-hemorrhage-access-rescue-from-a-surgical-emergency
#10
Tazo Inui, Valy Boulom, Dennis Bandyk, John S Lane, Erik Owens, Andrew Barleben
OBJECTIVE: Hemorrhage from a dialysis access can be a life-threatening condition. This study details our experience using access rescue strategies, including in situ graft replacement, primary repair, or conversion to an autogenous fistula; coupled with treatment of central vein occlusion to maintain access usage in patients presenting with conduit hemorrhage. METHODS: During a 3-yr period (2012-2014), 26 patients (14 women, 12 men) on chronic hemodialysis were treated for access conduit bleeding (n=18) or life-threatening hemorrhage (n=8); located in the upper extremity (n=23) or thigh (n=3)...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28341502/significance-of-blunted-venous-waveforms-seen-on-upper-extremity-ultrasound
#11
Xuan-Binh D Pham, Ezinne J Ihenachor, Hoover Wu, Jerry J Kim, Amy H Kaji, Matthew C Koopmann, Timothy J Ryan, Christian de Virgilio
BACKGROUND: Current guidelines recommend vascular mapping ultrasound (US) prior to arteriovenous fistula creation. Blunted venous waveforms (BVWs) suggest central venous stenosis; however, this relationship and one between BVWs and the presence of a central venous catheter (CVC) remain unclear. METHODS: All patients who received upper extremity vascular mapping US between January 2013 and October 2014 at a single institution were retrospectively reviewed. Patient demographics, comorbidities, US results, pacemaker history, and CVC status were collected...
March 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28297066/cerebral-hyperperfusion-and-other-consequences-of-hemodialysis-central-vein-catheters
#12
Haimanot Wasse
While central venous stenosis is a common consequence of protracted central venous catheter use, intracardiac device transvenous leads, and central venous instrumentation, the majority of patients who develop symptomatic central venous stenosis present with characteristic venous hypertension. However, some patients may develop an abnormal intracranial venous circulation and present with neurologic symptoms. This paper will summarize findings from case reports that describe the neurologic sequelae that can develop as a result of central venous stenosis/occlusion in end-stage renal disease patients with a functional arteriovenous access...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28279409/central-venous-interventions
#13
Masahiro Horikawa, Keith B Quencer
Central venous stenosis or occlusion is a common and vexing problem in patients undergoing hemodialysis. Typical presenting symptoms include arm swelling and prolonged bleeding after hemodialysis. Despite multiple treatment approaches, these stenoses tend to recur and progress over time. A thorough preprocedure evaluation, methodical procedural approach and awareness of potential complications are all essential to try to preserve vascular access and improve patients' quality of life.
March 2017: Techniques in Vascular and Interventional Radiology
https://www.readbyqxmd.com/read/28274588/unilateral-absence-of-an-external-jugular-vein-in-two-english-bulldogs-with-pulmonary-valve-stenosis
#14
E H Chapel, B A Scansen
Two English bulldogs referred for interventional palliation of severe pulmonary valve stenosis were incidentally diagnosed with unilateral absence of an external jugular vein (left in one case, right in the other) by computed tomography and Doppler ultrasound. The right internal jugular vein also could not be visualized in the dog with absence of the left external jugular vein. Cervical venous anomalies can impact diagnostic or interventional venous catheterization procedures such as balloon pulmonary valvuloplasty...
April 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28238580/concurrent-central-venous-stent-and-central-venous-access-device-placement-does-not-compromise-stent-patency-or-catheter-function-in-patients-with-malignant-central-venous-obstruction
#15
Katherine Clark, Jeffrey Forris Beecham Chick, Shilpa N Reddy, Benjamin J Shin, Gregory J Nadolski, Timothy W Clark, Scott O Trerotola
PURPOSE: To determine if concurrent placement of a central venous stent (CVS) and central venous access device (CVAD) compromises stent patency or catheter function in patients with malignant central venous obstruction. MATERIALS AND METHODS: CVS placement for symptomatic stenosis resulting from malignant compression was performed in 33 consecutive patients who were identified retrospectively over a 10-year period; 28 (85%) patients had superior vena cava syndrome, and 5 (15%) had arm swelling...
February 23, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28229483/venous-hemodialysis-catheters-and-cardiac-implantable-electronic-devices-avoiding-a-high-risk-combination
#16
EDITORIAL
Theodore F Saad, Henry L Weiner
End-stage renal disease is frequently accompanied by cardiac comorbidity that warrants treatment with a cardiovascular implantable electronic device (permanent pacemaker or implantable cardioverter-defibrillator). In the United States, chronic hemodialysis (HD) population, cardiac implantable devices are present in up to 10.5% of patients; a venous HD catheter is utilized for blood access in 18% of prevalent patients. The concomitant presence of a venous HD catheter and cardiovascular implantable device creates a high-risk circumstance, with potential for causing symptomatic central venous stenosis, and for developing complicated endovascular infection...
May 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28182818/alternative-strategies-for-central-venous-stenosis-and-occlusion-in-patients-requiring-haemodialysis-access
#17
LETTER
Keith Koh, Ye Xin Koh, Edward Tc Choke, John Cc Wang, Ch'ng Jack Kian
No abstract text is available yet for this article.
January 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28165577/surgical-reconstruction-of-central-venous-obstruction-in-salvaging-upper-extremity-dialysis-accesses
#18
Jurabek Babadjanov, Rick Bernstein, Lee Kirksey
BACKGROUND: Central vein thrombosis or obstruction is a common complication associated with central venous catheters placed for intermittent hemodialysis. The reported outcomes of percutaneous catheter-based interventions reveal high rates of lesion recurrence with varying and frequently limited patency intervals. We present the case of open venous bypass in the treatment of catheter-associated chronic central vein occlusion. METHODS: We report a case of symptomatic arm swelling secondary to central vein stenosis and failed endovascular venous intervention treated by central vein bypass with prosthetic graft through median sternotomy...
February 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28075624/use-of-preprocedural-mdct-for-cardiac-implantable-electric-device-lead-extraction-frequency-of-findings-that-change-management
#19
Wendy L Ehieli, Daniel T Boll, Daniele Marin, Robert Lewis, Jonathan P Piccini, Lynne M Hurwitz
OBJECTIVE: Five percent of cardiac implantable electric devices (CIEDs) are removed each year. Percutaneous extraction is preferred but can be complicated if the leads adhere to the vasculature or perforate. The goal of this study is to assess the frequency of findings on dedicated MDCT that alter preprocedural planning for percutaneous CIED extraction. MATERIALS AND METHODS: One hundred patients with CIEDs who underwent MDCT before percutaneous lead extraction were analyzed...
April 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27993753/reactive-myocardial-hyperemia-for-functional-assessment-of-coronary-stenosis-severity
#20
Michael Stoller, Christian Seiler
AIM: To compare functional assessment of coronary stenosis severity by fractional flow reserve (FFR) measurement as induced by systemic adenosine and by regional reactive myocardial hyperemia. METHODS AND RESULTS: The primary study endpoints were coronary pressure-derived FFR values in response to intravenous adenosine infusion (140µg/min/kg) and to a 1-minute proximal coronary artery balloon occlusion (reactive hyperemia) for the same stenosis of interest. The secondary study endpoint was coronary collateral flow index (CFI) during the same occlusion...
December 20, 2016: EuroIntervention
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