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Central venous stenosis

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https://www.readbyqxmd.com/read/28346468/endoluminal-dilatation-for-embedded-hemodialysis-catheters-a-case-control-study-of-factors-associated-with-embedding-and-clinical-outcomes
#1
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
#2
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
#3
Xuan-Binh D Pham, Ezinne J Ihenachor, Hoover Wu, Jerry J Kim, Amy H Kaji, Matthew C Koopmann, Timothy J Ryan, Christian de Virgilio
INTRODUCTION: Current guidelines recommend vascular mapping ultrasound (US) prior to arteriovenous fistula creation. Blunted venous waveforms (BVW) suggest central venous stenosis; however, this relationship and one between BVW and the presence of a central venous catheter (CVC) remain unclear. MATERIAL AND METHODS: All patients who received upper-extremity vascular mapping US between January 2013 and October 2014 at a single institution were retrospectively reviewed...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28297066/cerebral-hyperperfusion-and-other-consequences-of-hemodialysis-central-vein-catheters
#4
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
#5
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
#6
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...
March 5, 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
#7
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
#8
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...
February 23, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28182818/alternative-strategies-for-central-venous-stenosis-and-occlusion-in-patients-requiring-haemodialysis-access
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/27989060/acute-invasive-hemodynamic-effects-of-transcatheter-aortic-valve-replacement
#13
Michael Chrissoheris, Antonis Ziakas, Antonis Chalapas, Stavros Chadjimiltiades, Ioannis Styliades, Charalambos Karvounis, Ioulia Nikolaou, Konstantinos Spargias
BACKGROUND: Aortic stenosis imposes a chronic pressure overload on the left ventricle, with attendant adaptations in hemodynamics, muscle mass and performance. The hemodynamic changes that occur during the initial 24 h following abrupt removal of the impediment to left ventricular outflow have not been previously examined. METHODS: A total of 52 patients with right heart catheterization was evaluated before, within 6 h and at 24 h after successful transcatheter aortic valve replacement (TAVR)...
March 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27987614/the-bull-s-eye-sign-and-other-suprainguinal-venographic-findings-to-limit-the-use-of-intravascular-ultrasound-in-patients-with-severe-venous-stasis
#14
Enrico Ascher, Justin Eisenberg, Natalie Bauer, Natalie Marks, Anil Hingorani, Syed Rizvi
OBJECTIVE: When assessing the common femoral and suprainguinal veins in patients with venous stasis, it is generally agreed that use of intravascular ultrasound (IVUS) is mandatory. This widely held dogma is reinforced by the fact that extrinsic compression of the iliac veins does not reproduce images consistent with eccentric stenosis as one sees in the arterial system. In an attempt to identify a subgroup of patients where the use of IVUS could be averted, we analyzed and carefully evaluated the images of patients who had both standard contrast venograms and IVUS examinations...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27964855/a-case-of-brachiocephalic-fistula-steal-and-the-emergency-physician-s-approach-to-hemodialysis-arteriovenous-fistula-complications
#15
Erica Simon, Brit Long, Kyle Johnston, Shane Summers
BACKGROUND: Chronic kidney disease is common in the United States, with many patients maintained on hemodialysis (HD). The process of HD requires vascular access through an arteriovenous (AV) fistula, AV graft, or central venous catheter. Today, as a result of the National Kidney Foundation's "Fistula First" initiative, nearly 55% of HD patients utilize an AV fistula. As there is significant morbidity and mortality associated with fistula placement and recurrent fistula cannulation, emergency physicians must be equipped to recognize and treat fistula complications...
December 10, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27951576/future-trends-in-vascular-access-creation
#16
Surendra Shenoy
Delivery of a prescribed dialysis dose, which is critical for longevity on hemodialysis, is directly dependent on vascular access (VA). However, VA is fraught with high failure rates and has room for innovation. Arteriovenous fistula (AVF), considered the 'best choice', has a high 'failure to mature' rate. Arteriovenous grafts (AVGs) are considered when patients are poor candidates for or have failed AVF, but have a high incidence of infections and thrombosis. Due to associated morbidity and mortality from complications, central venous catheters are considered only as 'bridging short-term access' when there is an urgent need for dialysis...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27864249/positive-predictive-value-of-cardiovascular-diagnoses-in-the-danish-national-patient-registry-a-validation-study
#17
Jens Sundbøll, Kasper Adelborg, Troels Munch, Trine Frøslev, Henrik Toft Sørensen, Hans Erik Bøtker, Morten Schmidt
OBJECTIVE: The majority of cardiovascular diagnoses in the Danish National Patient Registry (DNPR) remain to be validated despite extensive use in epidemiological research. We therefore examined the positive predictive value (PPV) of cardiovascular diagnoses in the DNPR. DESIGN: Population-based validation study. SETTING: 1 university hospital and 2 regional hospitals in the Central Denmark Region, 2010-2012. PARTICIPANTS: For each cardiovascular diagnosis, up to 100 patients from participating hospitals were randomly sampled during the study period using the DNPR...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27813144/arterio-venous-fistula-for-automated-red-blood-cells-exchange-in-patients-with-sickle-cell-disease-complications-and-outcomes
#18
Marianne Delville, Sandra Manceau, Nassim Ait Abdallah, Jan Stolba, Sameh Awad, Thibaud Damy, Barnabas Gellen, Laurent Sabbah, Karima Debbache, Vincent Audard, Jean-Louis Beaumont, Cécile Arnaud, Christelle Chantalat-Auger, Françoise Driss, François Lefrère, Marina Cavazzana, Gilbert Franco, Frederic Galacteros, Jean-Antoine Ribeil, Justine Gellen-Dautremer
Erythrocytapheresis (ER) can improve outcome in patients with sickle cell disease (SCD). A good vascular access is required but frequently it can be difficult to obtain for sickle cell patients. Arterio-venous fistulas (AVFs) have been suggested for ER in SCD supported by limited evidence. We report the largest cohort of ER performed with AVFs from three French SCD reference centers. Data of SCD patients undergoing ER with AVFs in the French SCD reference center were retrospectively collected. The inclusion criteria were: SS or Sβ-Thalassemia and AVF surgery for ER...
February 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/27789765/the-predictive-value-of-haemodynamic-parameters-for-outcome-of-deep-venous-reconstructions-in-patients-with-chronic-deep-vein-obstruction-a-systematic-review
#19
Rlm Kurstjens, Maf de Wolf, J Kleijnen, R de Graaf, Cha Wittens
OBJECTIVE: The aim of this study was to investigate the predictive value of haemodynamic parameters on success of stenting or bypass surgery in patients with non-thrombotic or post-thrombotic deep venous obstruction. METHODS: EMBASE, MEDLINE and trial registries were searched up to 5 February 2016. Studies needed to investigate stenting or bypass surgery in patients with post-thrombotic obstruction or stenting for non-thrombotic iliac vein compression. Haemodynamic data needed to be available with prognostic analysis for success of treatment...
October 27, 2016: Phlebology
https://www.readbyqxmd.com/read/27757189/diagnostic-value-of-computerized-tomography-venography-in-detecting-stenosis-and-occlusion-of-subclavian-vein-and-superior-vena-in-chronic-renal-failure-patients
#20
Banafsheh Bakhshoude, Hassan Ravari, Gholam Hosein Kazemzadeh, Masoud Pezeshki Rad
INTRODUCTION: Currently, venography is the standard diagnostic method to examine veins before implementing access, which is invasive in nature. Computerized tomography venography (CTV) can simultaneously indicate deep and superficial venous systems in the upper extremity and their relation to the surrounding anatomical structures; however, its diagnostic value in the detection of central venous disease has yet to be defined. The aim of this study was to determine the diagnostic value of CT venography compared to venography in the diagnosis of stenosis and the occlusion of subclavian veins and the superior vena in renal failure patients...
August 2016: Electronic Physician
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