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Central venous stenosis

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https://www.readbyqxmd.com/read/28075624/use-of-preprocedural-mdct-for-cardiac-implantable-electric-device-lead-extraction-frequency-of-findings-that-change-management
#1
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...
January 11, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27993753/reactive-myocardial-hyperemia-for-functional-assessment-of-coronary-stenosis-severity
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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...
November 4, 2016: 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
#9
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
#10
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
https://www.readbyqxmd.com/read/27624355/impact-of-prosthesis-patient-mismatch-on-early-haemodynamic-status-after-aortic-valve-replacement
#11
Michel Kindo, Tam Hoang Minh, Stéphanie Perrier, Hélène Petit-Eisenmann, Jonathan Bentz, Mircea Cristinar, Gharib Ajob, Olivier Collange, Jean-Philippe Mazzucotelli
OBJECTIVES: Prosthesis-patient mismatch (PPM) has been reported to impact early haemodynamic status and early mortality after prosthetic aortic valve replacement (AVR) in patients with aortic stenosis (AS). The aim of this study was to assess the impact of PMM on early haemodynamic status after AVR using vasoactive-inotropic dependency index (VDI), postoperative pressures and end-organ perfusion. METHODS: A total of 183 patients with AS were included in this prospective cohort study, and underwent elective AVR with or without combined coronary artery bypass graft surgery...
September 13, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27593845/endovascular-management-of-iatrogenic-vascular-injury-in-craniocervical-region
#12
Elçin Aydin, Mustafa Gök, Asım Esenkaya, Celal Çinar, İsmail Oran
AIM: We aimed to evaluate iatrogenic vascular injuries in craniocervical region and their endovascular management. MATERIAL AND METHODS: Twenty-one patients (nine women, twelve men) with a mean age of 53.6 (range 16-87 years), who underwent endovascular embolization for iatrogenic vascular injury in craniocervical region between December 2000 and October 2015 were included in this retrospective study. Types of iatrogenic injuries, etiologies that caused these injuries and details of endovascular managements were reported...
July 1, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27588751/from-zero-to-hero-saving-lives-one-hero-at-a-time
#13
Dr Charlotte Ratcliff, Miss Monica Hansrani
INTRODUCTION: This case report intends to highlight the Haemodialysis Reliable Outflow (HeRO) graft as a potential long term option for ongoing dialysis in patients with central venous stenosis. PRESENTATION OF CASE: A 55year old patient, who developed end stage renal failure (ESRF) after chemotherapy treatment for breast cancer, presented at the limit of her dialysis access after a 15year haemodialysis history causing central vein stenosis. The patient was initially started on peritoneal dialysis but after repeated peritonitis was switched to haemodialysis...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27525493/management-of-innominate-vein-rupture-during-superior-vena-cava-angioplasty
#14
Joseph Kuhn, Ahmet Kilic, Erica Stein
Although vessel perforation rarely occurs during percutaneous transluminal angioplasty of a central venous stenosis, it can be a rapidly fatal complication when accompanied by pericardial tamponade. The present case report details our experience with this dangerous complication. It also highlights the risk factors for and the pathogenesis of central venous stenosis, the clinical findings associated with inadvertent vessel perforation during an intervention, and anesthetic management strategies for pericardial tamponade resulting from vessel perforation...
August 15, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27508800/-op-lb-02-04-central-iliac-arteriovenous-anastomosis-for-uncontrolled-hypertension-12-month-follow-up-results-of-the-rox-control-htn-randomised-controlled-trial
#15
M Lobo, M Saxena, P A Sobotka, C Ott, E Dolan, J Foran, S S Furniss, J Cockcroft, M Van Der Giet, J Hoyer, A Januszewicz, G A Ng, B Rensing, B Scott, D Schoors, A Stanton, N Sulke, C Tsioufis, A Witkowski, R E Schmieder
OBJECTIVE: Creation of a central iliac arteriovenous (AV) anastomosis using a novel nitinol coupler device results in an immediate, significant reduction of blood pressure (BP). We present efficacy and safety findings at 12 months post coupler insertion, extending the initial 6 month primary endpoint report (Lancet 2015). DESIGN AND METHOD: This open-label, multicentre, prospective, randomised trial, enrolled patients with a baseline office systolic blood pressure (SBP) >140 mmHg, average daytime ambulatory SBP > 135 mmHg, and ambulatory diastolic blood pressure (DBP) > 85 mmHg...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27492146/central-venous-occlusion-in-the-hemodialysis-patient
#16
Vinay Narasimha Krishna, Joseph B Eason, Michael Allon
Central venous stenosis (CVS) is encountered frequently among hemodialysis patients. Prior ipsilateral central venous catheterization and cardiac rhythm device insertions are common risk factors, but CVS can also occur in the absence of this history. Chronic CVS can cause thrombosis with partial or complete occlusion of the central vein at the site of stenosis. CVS is frequently asymptomatic and identified as an incidental finding during imaging studies. Symptomatic CVS presents most commonly as an upper- or lower-extremity edema ipsilateral to the CVS...
November 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27434479/occult-central-venous-stenosis-leading-to-airway-obstruction-after-subtotal-parathyroidectomy
#17
Duncan A Meiklejohn, Dylan K Chan, M Lauren Lalakea
Subtotal parathyroidectomy may be indicated in patients with chronic renal failure and tertiary hyperparathyroidism, a population at increased risk for central venous stenosis (CVS) due to repeated vascular access. Here we report a case of complete upper airway obstruction precipitated by subtotal parathyroidectomy with ligation of anterior jugular vein collaterals in a patient with occult CVS. This case demonstrates a previously unreported risk of anterior neck surgery in patients with chronic renal failure...
July 2016: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/27423716/simultaneous-iliac-vein-bovine-pericardial-patch-venoplasty-and-creation-of-ptfe-lower-limb-arteriovenous-fistula-graft-for-rescue-vascular-access
#18
Lewis Meecham, Owain Fisher, George Kirby, Richard Evans, Pauline Buxton, Jocelyn Legge, Sriram Rajagopalan, John Asquith, Arun Pherwani
BACKGROUND: We present a case of external iliac vein patch venoplasty to accommodate rescue vascular access via a polytetrafluoroethylene loop arteriovenous fistula graft (AVG) for a patient with multiple central venous stenoses. METHODS: A 35-year-old female with anti-glomerular basement membrane antibody disease required rescue vascular access for hemodialysis. Repeated occlusion and/or thrombosis of long-term central venous access cannulae, to facilitate dialysis, had caused stenosis of brachiocephalic veins: right external iliac vein and occlusion of the left common iliac vein...
October 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27373537/the-dwell-time-and-survival-rates-of-picc-placement-after-balloon-angioplasty-in-patient-with-unexpected-central-venous-obstruction
#19
Ki Hyun Kim, Sang Woo Park, Il Soo Chang, Younghee Yim
PURPOSE: To evaluate the dwell time and actual survival rates of peripherally inserted central catheter (PICC) placements after balloon angioplasty in patients with unexpected central venous obstructions. MATERIALS AND METHODS: Data were obtained on all PICC insertions performed in a tertiary care hospital from August 2008 to December 2013. Thirty-five PICCs attempted after balloon angioplasty in 25 patients (15 male and 10 female patients; mean age, 63 years). Fisher's exact test was used to test for differences in reasons for catheter removal between the groups of patients with stenosis or obstructions...
September 21, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/27235473/lower-extremity-permanent-dialysis-vascular-access
#20
REVIEW
Vishal B Parekh, Vandana D Niyyar, Tushar J Vachharajani
Hemodialysis remains the most commonly used RRT option around the world. Technological advances, superior access to care, and better quality of care have led to overall improvement in survival of patients on long-term hemodialysis. Maintaining a functioning upper extremity vascular access for a prolonged duration continues to remain a challenge for dialysis providers. Frequently encountered difficulties in clinical practice include (1) a high incidence of central venous catheter-related central vein stenosis and (2) limited options for creating a functioning upper extremity permanent arteriovenous access...
September 7, 2016: Clinical Journal of the American Society of Nephrology: CJASN
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