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Venous outflow obstruction

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https://www.readbyqxmd.com/read/28402473/cavernous-malformation-associated-with-arterialized-developmental-venous-anomaly-a-case-report
#1
Kenta Nakase, Yasushi Motoyama, Tokiko Nakai, Yasuhiro Takeshima, Ichiro Nakagawa, Young-Su Park, Chiho Ohbayashi, Hiroyuki Nakase
BACKGROUND AND IMPORTANCE: Formation of cavernous malformations (CMs) has been recognized to be associated with developmental venous anomaly (DVA) by many authors. Hemodynamic stress due to venous outflow restriction could be hypothesized as a cause. On the other hand, a rare subgroup of DVA with an arterial component has been reported as likely to hemorrhage or be symptomatic. Cases of arterialized DVAs reported previously have not been associated with the presence of CM. CLINICAL PRESENTATION: We present herein a case report of arterialized DVA in the brainstem with repeated cerebellar hemorrhage...
April 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28360352/intracranial-venous-pressures-under-conscious-sedation-and-general-anesthesia
#2
Daniel M S Raper, Thomas J Buell, Ching-Jen Chen, Dale Ding, Robert M Starke, Kenneth C Liu
INTRODUCTION: Venous outflow obstruction has been implicated in the pathophysiology of a subset of patients with idiopathic intracranial hypertension (IIH), and venous sinus stenting (VSS) has emerged as an effective treatment. However, the effect of anesthesia on venous sinus pressure measurements is unpredictable. A more thorough understanding of the effect of the level of anesthesia on intracranial venous pressures might help to better define patients who might benefit most from stent placement...
March 30, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28341509/dialysis-access-hemorrhage-access-rescue-from-a-surgical-emergency
#3
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/28329285/upright-treadmill-vs-semi-supine-bicycle-exercise-echocardiography-to-provoke-obstruction-in-symptomatic-hypertrophic-cardiomyopathy-a-pilot-study
#4
Patricia Reant, Maxence Dufour, Jerome Peyrou, Amelie Reynaud, Caroline Rooryck, Marina Dijos, Cecile Vincent, Claire Cornolle, Raymond Roudaut, Stephane Lafitte
Aims: Recent findings regarding hypertrophic cardiomyopathy (HCM) haemodynamics emphasized the relationship between symptoms, left ventricular outflow tract obstruction (LVOTO), and the preload condition as the venous return level. As various types of exercises have different effects on peripheral vascular beds, this study sought to compare upright treadmill exercise echocardiography (EE) to semi-supine bicycle EE in maximum provoked LVOTO in HCM patients. Methods and results: Semi-supine bicycle and upright treadmill EE were prospectively performed in HCM patients with New York Heart Association functional Class II...
February 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28321380/an-evaluation-of-styloidectomy-as-an-adjunct-or-alternative-to-jugular-stenting-in-idiopathic-intracranial-hypertension-and-disturbances-of-cranial-venous-outflow
#5
J Nicholas Higgins, Mathew R Garnett, John D Pickard, Patrick R Axon
Background The extent to which intracranial venous sinus obstruction contributes to idiopathic intracranial hypertension (IIH) is debated. The extent to which extracranial venous obstruction contributes to IIH is virtually unexplored. This article describes an interventional approach to extracranial venous outflow in a group of patients with severe intractable symptoms. Objective To describe our technique and experience of styloidectomy combined with jugular stenting in the treatment of skull base narrowing of the jugular veins...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28256911/paroxysmal-nocturnal-haemoglobinuria-in-a-patient-with-primary-budd-chiari-syndrome-a-contraceptive-challenge
#6
Isabel Friedmann, Jacques Balayla
CASE REPORT: In this report, we describe the unique case of a 21 year-old woman, gravida 1, para 1, with paroxysmal nocturnal haemoglobinuria (PNH) and Budd-Chiari syndrome, as well as severe vaginismus and cervical stenosis, in need of contraception. Herein, we present the clinical considerations and implications taken to arrive at the right contraceptive choice for the patient. DISCUSSION: Budd-Chiari syndrome is defined by the presence of hepatic venous outflow tract obstruction, which may be due to a number of underlying causes...
April 2017: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/28179597/sinus-pericranii-with-dominant-venous-outflow-in-the-superior-eyelid
#7
Eiji Ito, Syuntaro Takasu, Kenichi Hattori
Sinus pericranii (SP) located in the superior eyelid is an unusual clinical presentation. Here, we report a case of 72-year-old woman with an unruptured cerebral aneurysm presented with an SP located in the left superior eyelid. The SP was found to have a dominant venous outflow from the bilateral frontal region with an arterialized blood flow pattern on color Doppler ultrasonography (CDUS). During the aneurysmal surgery, intraoperative monitoring of the dominant venous outflow with CDUS was useful for the prevention of venous outflow obstruction...
March 15, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28169486/hepatic-vena-cava-syndrome-new-concept-of-pathogenesis
#8
REVIEW
Santosh Man Shrestha, Masayoshi Kage, Byung Boong Lee
Hepatic vena cava syndrome (HVCS) also known as membranous obstruction of inferior vena cava was considered a rare congenital disease and included under Budd Chiari syndrome. It is now recognized as a bacterial infection induced disease related to poor hygienic living condition. Localized thrombophlebitis of IVC at the site close to hepatic veins (HV) outlets is the initial lesion which converts on resolution into stenosis or complete obstruction, the circulatory equilibrium being maintained by development of cavo-caval collateral anastomosis...
February 7, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28116521/in-hepatic-venous-outflow-obstruction-alcoholic-liver-disease-and-nonalcoholic-fatty-liver-disease-centrilobular-scars-cd34-vessels-and-keratin-7-hepatocytes-are-in-close-proximity
#9
Susumu Matsukuma, Hiroaki Takeo, Yoshitaka Utsumi, Kimiya Sato
For hepatic venous outflow obstruction, alcoholic liver injury, and nonalcoholic fatty liver disease, the term "centrizonal injury disease" (CID) is used, because injury patterns in all three entities are similar. To elucidate CID-related CD34+ vessels (sinusoids and/or microvessels) and keratin 7+ hepatocytes (K7+ Hs), we examined a series of 41 liver tissue specimens obtained at autopsy and surgery, consisting of 32 CID cases and 9 controls. Centrizonal scars were found in 21 CID cases, and these were associated with centrizonal CD34+ vessels (P = 0...
April 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28104116/outflow-reconstruction-using-cryopreserved-homologous-venous-grafts-in-living-donor-liver-transplantation
#10
K Ito, N Akamatsu, J Togashi, S Tamura, Y Sakamoto, K Hasegawa, N Kokudo
OBJECTIVES: The techniques and outcomes of outflow reconstruction in living donor liver transplantation (LDLT) using cryopreserved homologous veins at the University of Tokyo Hospital are presented. METHODS: We performed 540 LDLTs from January 1996 to March 2015. Graft types included right liver graft (n = 262), left liver graft (n = 196), left lateral sector graft (n = 53), and posterior sector graft (n = 28). We routinely use cryopreserved homologous vein grafts for the hepatic vein reconstructions to secure the large outflow of the graft...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28025027/catheter-directed-thrombolysis-and-pharmacomechanical-thrombectomy-improve-midterm-outcome-in-acute-iliofemoral-deep-vein-thrombosis
#11
Tzu-Ting Kuo, Chun-Yang Huang, Chiao-Po Hsu, Chiu-Yang Lee
BACKGROUND: Aggressive and early thrombus removal strategy has been widely used as a treatment for iliofemoral deep vein thrombosis (DVT). We compared the long-tem venous outcome, including postthrombotic syndrome (PTS), in patients undergoing catheter-directed thrombolysis (CDT) and pharmacomechanical thrombectomy (PMT). METHODS: From January 2009 to December 2013, 61 patients with acute proximal DVT were enrolled in this prospective study. Thirty-one patients underwent CDT and 30 patients underwent PMT, and each patient was followed for at least 2 years after treatment...
February 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28018103/portal-hypertension-in-polycystic-liver-disease-patients-does-not-affect-wait-list-or-immediate-post-liver-transplantation-outcomes
#12
Neil Rajoriya, Dhiraj Tripathi, Joanna A Leithead, Bridget K Gunson, Sophie Lord, James W Ferguson, Gideon M Hirschfield
AIM: To establish the impact of portal hypertension (PH) on wait-list/post-transplant outcomes in patients with polycystic liver disease (PCLD) listed for liver transplantation. METHODS: A retrospective single-centre case controlled study of consecutive patients listed for liver transplantation over 12 years was performed from our centre. PH in the PCLD cohort was defined by the one or more of following parameters: (1) presence of radiological or endoscopic documented varices from our own centre or the referral centre; (2) splenomegaly (> 11 cm) on radiology in absence of splenic cysts accounting for increased imaging size; (3) thrombocytopenia (platelets < 150 × 10(9)/L); or (4) ascites without radiological evidence of hepatic venous outflow obstruction from a single cyst...
December 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27987620/validation-of-the-novel-venous-drainage-index-with-stepwise-increases-in-thigh-compression-pressure-in-the-quantification-of-venous-obstruction
#13
Christopher R Lattimer, Stephen Doucet, George Geroulakos, Evi Kalodiki
BACKGROUND: Venous drainage from the leg is poorly understood, and it is difficult to quantify it hemodynamically. Attempts have been made using duplex ultrasound scanning and venous occlusion air plethysmography (APG). However, they have limited value in day-to-day clinical practice. This is because venous drainage measurements have never been validated successfully against increasing obstruction pressures. The hypothesis is that the novel gravitational venous drainage index (VDI) in milliliters/second is reduced in response to increasing venous obstruction, and the aim was to quantify this, using stepwise inflations of a thigh cuff...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27987604/common-femoral-endovenectomy-in-conjunction-with-iliac-vein-stenting-to-improve-venous-inflow-in-severe-post-thrombotic-obstruction
#14
Himanshu Verma, Ramesh K Tripathi
Post-thrombotic syndrome secondary to iliofemoral deep venous thrombosis is a significant contributor to advanced chronic venous insufficiency. Iliac vein stenting is a standard procedure to treat iliocaval obstruction. In cases with obstruction extending across the groin, venous inflow for an iliac vein stent may be poor and compromise results of iliac vein stenting. Treatment options include extension of stents across the inguinal ligament that may have limitations in improving inflow only from only one vessel...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27903022/-recanalization-techniques-for-venous-outflow-obstruction
#15
REVIEW
Michael K W Lichtenberg, Houman Jalaie
Deep vein thrombosis (DVT) is associated with a high cost burden for health care systems because of secondary cost intensive complications like pulmonary embolism and especially the post thrombotic syndrome (PTS). The current standard therapy of anticoagulation for DVT therapy has not changed through the years leaving patients especially with iliofemoral vein thrombus on a high-risk situation for developing PTS. Current study situation for endovascular treatment of iliofemoral DVT treatment gives a rationale for active thrombus removal using catheter directed therapy (CDT) or pharmacomechanical thrombectomy (PMT) which improves valvular vein function and luminal patency reducing the potential complication of PTS...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27876287/mid-term-outcomes-of-common-congenital-heart-defects-corrected-through-a-right-subaxillary-thoracotomy
#16
Guoying An, Hongyu Zhang, Shanguang Zheng, Weixin Wang, Liming Ma
OBJECTIVE: To evaluate the mid-term outcomes of the correction of various congenital heart defects through a right subaxillary thoracotomy. METHODS: Between June 2004 and April 2014, all eligible patients were those with a common congenital heart defect corrected via an approach through a right subaxillary thoracotomy. There were 836 patients (male 417, female 419; median age, 3.5 years; median weight 13.6kg) with ventricular septal defect (VSD) closure (523 patients), atrial septal defect (ASD) closure (235 patients), partial atrioventricular canal (PAVC) correction (55 patients), mild tetralogy of Fallot (TOF) (23 patients)...
February 17, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27767958/noncavernous-arteriovenous-shunts-mimicking-carotid-cavernous-fistulae
#17
Chai Kobkitsuksakul, Pakorn Jiarakongmun, Ekachat Chanthanaphak, Sirintara Pongpech
PURPOSE: The classic symptoms and signs of carotid cavernous sinus fistula or cavernous sinus dural arteriovenous fistula (AVF) consist of eye redness, exophthalmos, and gaze abnormality. The angiography findings typically consist of arteriovenous shunt at cavernous sinus with ophthalmic venous drainage with or without cortical venous reflux. In rare circumstances, the shunts are localized outside the cavernous sinus, but mimic symptoms and radiography of the cavernous shunt. We would like to present the other locations of the arteriovenous shunt, which mimic the clinical presentation of carotid cavernous fistulae, and analyze venous drainages...
November 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/27751879/can-preeclampsia-be-considered-a-renal-compartment-syndrome-a-hypothesis-and-analysis-of-the-literature
#18
David G Reuter, Yuk Law, Wayne C Levy, Stephen P Seslar, R Eugene Zierler, Mark Ferguson, James Chattra, Tim McQuinn, Lenna L Liu, Mark Terry, Patricia S Coffey, Jane A Dimer, Coral Hanevold, Joseph T Flynn, F Bruder Stapleton
The morbidity and mortality associated with preeclampsia is staggering. The physiology of the Page kidney, a condition in which increased intrarenal pressure causes hypertension, appears to provide a unifying framework to explain the complex pathophysiology. Page kidney hypertension is renin-mediated acutely and ischemia-mediated chronically. Renal venous outflow obstruction also causes a Page kidney phenomenon, providing a hypothesis for the increased vulnerability of a subset of women who have what we are hypothesizing is a "renal compartment syndrome" due to inadequate ipsilateral collateral renal venous circulation consistent with well-known variation in normal venous anatomy...
September 15, 2016: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/27742430/non-contrast-enhanced-mr-angiography-in-the-diagnosis-of-budd-chiari-syndrome-bcs-compared-with-digital-subtraction-angiography-dsa-preliminary-results
#19
Chun Yang, Ceng Li, Mengsu Zeng, Xin Lu, Jingjing Li, Jiali Wang, Muhammad Umair Sami, Kai Xu
Non-CE MRA techniques (true steady-state free-precession, SSFP) have been used effectively for the selective visualization of the portal venous system and inferior vena cava. Budd-Chiari Syndrome (BCS) encompasses a number of conditions that cause the obstruction of the hepatic outflow tract from the small hepatic veins to the junction of the inferior vena cava (IVC) and right atrium. The purpose of this study was to diagnose BCS with IVC obstruction using respiratory triggered three-dimensional (3D) true SSFP with T-SLIP and compare to digital subtraction angiography (DSA)...
October 11, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27681331/the-spectrum-of-histologic-findings-in-hepatic-outflow-obstruction
#20
Raul S Gonzalez, Michael A Gilger, Won Jae Huh, Mary Kay Washington
CONTEXT: -Cardiac hepatopathy and Budd-Chiari syndrome are 2 forms of hepatic venous outflow obstruction with different pathophysiology but overlapping histologic findings, including sinusoidal dilation and centrilobular necrosis. OBJECTIVE: -To determine whether a constellation of morphologic findings could help distinguish between the 2 and could suggest the diagnoses in previously undiagnosed patients. DESIGN: -We identified 26 specimens with a diagnosis of cardiac hepatopathy and 23 with a diagnosis of Budd-Chiari syndrome...
January 2017: Archives of Pathology & Laboratory Medicine
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