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Vein occlusion

Sergio Crespo-Garcia, Nadine Reichhart, Sergej Skosyrski, Marco Foddis, Jim Wu, Aleksandar Figura, Christina Herrspiegel, Martina Füchtemeier, Celeste Sassi, Ulrich Dirnagl, Antonia M Joussen, Olaf Strauss
Animal models of disease are an indispensable element in our quest to understand pathophysiology and develop novel therapies. Ex vivo studies have severe limitations, in particular their inability to study individual disease progression over time. In this respect, non-invasive in vivo technologies offer multiple advantages. We here used bilateral common carotid artery occlusion (BCCAO) in mice, an established model for ischemic retinopathy, and performed a multimodal in vivo and ex vivo follow-up. We used scanning laser ophthalmoscopy (SLO), ocular coherence tomography (OCT) and electroretinography (ERG) over 6 weeks followed by ex vivo analyses...
2018: PloS One
Maxim Yu Rykov, Sergei V Zaborovskij, Alexander N Shvecov, Vladimir V Shukin
PURPOSE: To review our experience with peripherally inserted central catheters in pediatric cancer patients. METHODS: The analysis included 353 patients (3 months up to 17 years, mean age 11.2 years) with a variety of cancers diseases, which in 2011-2016, 354 peripherally inserted central catheters were placed. All settings are carried out using ultrasound guidance. In 138 (39%) patients, external anatomical landmarks were used and in 216 (61%) intraoperative fluoroscopy...
March 1, 2018: Journal of Vascular Access
Jin-Shan Zhang, Long Li, Wei Cheng
PURPOSE: Although Rex shunt is an effective treatment for extrahepatic portal venous obstruction (EHPVO), 4-20% children develop rebleeding postoperatively. This study was used to evaluate the surgical treatment of rebleeding after Rex shunt in our center. METHOD: From June 2008 to Jan 2017, 12 of 122 children with EHPVO underwent a second operation due to graft stenosis and occlusion after Rex shunt in our center. The abdominal ultrasound and computed tomography (CT) showed the occlusion of bypass vein in nine children, stenosis of bypass vein in two children, and the patency of bypass vein in one child with dysplasia of intrahepatic portal vein...
March 15, 2018: Pediatric Surgery International
Taiji Hasegawa, Sakura Murakawa, Ichiro Maruko, Akiko Kogure-Katakura, Tomohiro Iida
AIM: To determine whether there is a significant correlation between the reduction in macular vessel density and the recurrence of macular oedema in eyes with branch retinal vein occlusion (BRVO). METHODS: We reviewed the medical records of 27 eyes with macular oedema associated with BRVO. All eyes had received pro re nata intravitreal ranibizumab (IVR) injection. A reinjection of ranibizumab was performed when the central foveal thickness was ≥300 µm. At 12 months, patients without additional IVR for the last 4 months were placed in the resolved group, otherwise they were placed in the recurrence group...
March 15, 2018: British Journal of Ophthalmology
May W Chen, Michael Reyes, Ewa Kulikowicz, Laura Martin, David J Hackam, Raymond C Koehler, Jennifer K Lee
BACKGROUND: Abdominal near-infrared spectroscopy (aNIRS) may detect gastrointestinal hypoxia before necrotizing enterocolitis develops. We sought to validate aNIRS during splanchnic hypoxia and hypoperfusion in neonatal piglets. METHODS: Anesthetized piglets underwent systemic hypoxia or 3-h superior mesenteric artery (SMA) ligation with aNIRS monitoring. RESULTS: During progressive hypoxia, gastrointestinal tissue oxyhemoglobin saturation measured by aNIRS decreased linearly with oxyhemoglobin saturation measured directly in the portal vein...
March 14, 2018: Pediatric Research
Misun Hwang, Matthew A Thimm, Anthony L Guerrerio
PURPOSE: Cavernous transformation of the portal vein can be missed on color Doppler exam or arterial phase cross-sectional imaging due to their slow flow and delayed enhancement. Contrast-enhanced ultrasound (CEUS) offers many advantages over other imaging techniques and can be used to successfully detect cavernous transformations of the portal vein. METHODS: A 10-month-old female was followed for repeat episodes of hematemesis. Computed tomography angiography (CTA) and magnetic resonance arteriogram (MRA) and portal venography were performed...
March 13, 2018: Journal of Ultrasound
Dong Joon Kim, Dae Chul Suh, Byung Moon Kim, Dong Ik Kim
Purpose: Adjuvant coils may offer advantages in flow control during glue embolization of high flow vein of Galen aneurysmal malformation (VGAM) patients but involves specific issues such as feasibility, durability and coil mass effect. The purpose of this study is to assess the outcome of adjuvant coils in addition to transarterial glue embolization for treatment of these patients. Materials and Methods: Five pediatric VGAM patients (age range; 11 weeks to 2 yrs 2 mos) with high flow fistulous angioarchitecture were treated with adjuvant coils 1) in the distal feeding artery and/or 2) in the vein of Galen followed by glue embolization of the shunt...
March 2018: Neurointervention
Jin Qiong Zhou, Ya Xing Wang, Liang Xu, Liang Zhao, Shuang Wang, Jie Xu, Qi Sheng You, Hua Yang, Wen Bin Wei, Jost B Jonas
PURPOSE: To examine frequency and associations of retinal hemorrhages. METHODS: The population-based Beijing Eye Study included 3,468 individuals. Monoscopic fundus photographs were examined for hemorrhages. RESULTS: Retinal hemorrhages were detected in 515 eyes (429 individuals) (prevalence: 7.6%; 95% confidence interval [CI]: 7.0-8.0 per eye; 12.7%; 95% CI: 11.7-13.7 per person). Higher prevalence of retinal hemorrhages was correlated (multivariate analysis) with higher systolic blood pressure (P < 0...
March 12, 2018: Retina
Ashley Suah, J Michael Millis, Adam S Bodzin
Congenital membranous occlusion of the inferior vena cava (IVC) in pediatric liver recipients may present with outflow occlusion and if unrecognized, result in graft loss. Prompt evaluation of outflow obstruction in the setting of unexplained inflow compromise is paramount. We report a case of successful IVC reconstruction in a patient with recurrent hepatic artery thrombosis (HAT). A 2-year-old child with history of two liver transplantations developed fevers, ascites, and abdominal tenderness one month after her second liver transplant...
February 2018: Hepatobiliary Surgery and Nutrition
Erica Flores, Mayur Patel, Geoffery Orme, Wilber Su
This case details the successful implementation of a leadless pacemaker device in a patient with multiple venous occlusions and an IVC filter. As the incidence of IVC filters increases in patients with dysrhythmias, further investigations are required to determine the risk and safety of leadless pacemaker placement in this population.
March 2018: Clinical Case Reports
Yuki Horita
The objectives of central venous percutaneous transluminal angioplasty are to dilate the venous lesion and to extend the life of arteriovenous fistula for hemodialysis. It is reasonable to perform percutaneous transluminal angioplasty for central venous lesions if this interventional therapy is required to maintain stable dialysis therapy. However, the presence of large fresh thrombus at central venous lesion site represents a contraindication to percutaneous transluminal angioplasty unless the thrombus can first be removed by thrombectomy...
March 1, 2018: Journal of Vascular Access
Gottfried Martin, David Conrad, Bertan Cakir, Günther Schlunck, Hansjürgen T Agostini
PURPOSE: Retinal vein occlusion (RVO) has been investigated in several laser-induced animal models using pigs, rabbits and rats. However, laser-induced RVO has been rarely reported in mice, despite the impressive number of available mutants, ease of handling and cost effectiveness. The aim of this study was to further assess the feasibility of a RVO mouse model for gene expression analysis and its possible use to investigate effects of hypoxia. METHODS: C57Bl/6J mice were injected with eosin Y for photo-sensitization...
2018: PloS One
Kakharman Yesmembetov, Zhansaya Muratova, Sergey Borovskiy, Irina Ten, Kulpash Kaliaskarova
We report the clinical case of 23-year-old patient with liver cirrhosis of unknown genesis, significant resistant ascites, and 2 episodes of bleeding from esophageal varices. Evaluation did not find any cause of liver disease, and the patient was placed on the transplant wait list due to subcompensated liver function (Model for End-Stage Liver Disease score of 16, Child-Pugh class B) and poorly controlled severe portal hypertension. After treatment with diuretics, largevolume paracentesis, antibiotics, and vasoconstrictors, hepatorenal syndrome and spontaneous bacterial peritonitis resolved and liver function improved significantly...
March 2018: Experimental and Clinical Transplantation
Atsushi Aikawa, Masaki Muramatsu, Yusuke Takahashi, Yuko Hamasaki, Junya Hashimoto, Mai Kubota, Takeshi Kawamura, Yoshihiro Itabashi, Yoiji Hyodou, Seiichiro Shishido
During pediatric kidney transplant, surgical challenges occasionally occur. In particular, vascular anastomosis should be considered for children with small body weight < 12 kg, multiple renal arteries, vascular anomaly, and inferior vena cava occlusion. In pediatric patients, a living-donor renal graft is usually donated from a parent. Therefore, the renal artery and vein are too large to be anastomosed with the recipient's internal iliac artery and external iliac vein. In children who are > 12 kg, the renal artery and vein could be anastomosed with the external iliac artery and the external iliac vein...
March 2018: Experimental and Clinical Transplantation
Grzegorz Suwalski, Robert Emery, Jakub Mróz, Kamil Kaczejko, Leszek Gryszko, Andrzej Cwetsch, Andrzej Skrobowski
OBJECTIVES: In patients undergoing cardiac surgical procedures, pulmonary vein isolation may be easily accomplished, and it is important to achieve bidirectional conduction block across created lesions. The primary aim of this study was to assess the risk of pulmonary vein stenosis (PVS) after multiple applications of epicardial bipolar radiofrequency energy. METHODS: Thirty-five consecutive patients who were referred for off-pump coronary revascularization with concomitant pulmonary vein isolation and left atrial appendage occlusion were prospectively included in the study...
March 7, 2018: Interactive Cardiovascular and Thoracic Surgery
Michael A Silva, Rodolfo E Alcedo Guardia, Mohammad Ali Aziz-Sultan, Nirav J Patel
High flow extracranial-intracranial (EC-IC) bypass with a saphenous vein graft (SVG) has been used for more than 40 years in patients with giant aneurysms of the posterior circulation refractory to medical management, and has demonstrated high long term patency rates. We report the case of a patient treated with external carotid artery (ECA)-posterior cerebral artery SVG bypass in 1989 who presented 27 years later with paresthesias and confusion, and was found to have partial occlusion of her SVG bypass graft and a basilar occlusion...
March 8, 2018: BMJ Case Reports
Xicheng Zhang, Zhaolei Chen, Yuan Sun, Miao Xu
PURPOSE: This study aimed to investigate the clinical efficacy of surgical thrombectomy and simultaneous iliac vein stent implantation for the treatment of phlegmasia cerulea dolens (PCD)caused by iliac vein occlusion. METHODS: From February 2014 to December 2016, five patients with secondary PCD complicated with iliac vein occlusion were treated in our centre. Thrombectomy by venous incision was performed with simultaneous iliac vein balloon dilatation and stent implantation...
March 5, 2018: Annals of Vascular Surgery
A Coelho, P Brandão, M Lobo, I Lojo, A Canedo
INTRODUCTION: Major pelvic Ilio-Iliac arteriovenous fistula (AVF) is an exceedingly rare diagnosis with only a few described cases in the literature, most of them related to congenital defects or trauma. In this case report, we aim to present a case of an ilio-iliac AVF with an atypical clinical presentation. CASE REPORT: The patient is a 77-year-old women, with a relevant medical history of a temporally remote hysterectomy. She developed an exuberant unilateral right leg oedema and was diagnosed with a femoro-iliac deep vein thrombosis (DVT) and started on anticoagulation and daily use of elastic compression stockings...
March 5, 2018: Annals of Vascular Surgery
Kiyoshi Tamura, Toshiyuki Maruyama
Objective : Endovenous radiofrequency ablation (RFA), a relatively new technique for treating great saphenous varicose veins, is less invasive compared with stripping surgery. This study examined the mid-term safety and effectiveness of RFA for varicose veins. Materials and Methods : We enrolled 104 patients (147 limbs) who underwent RFA for varicose veins of the lower extremities (females, 67; 64.4%). The mean age was 68.9±9.2 years (39-85 years). In 121 limbs (82.3%), there were great saphenous veins. All patients were observed as outpatients for 12 months after the procedure...
December 25, 2017: Annals of Vascular Diseases
Timme Maj van Vuuren, Suat Doganci, Irwin M Toonder, Rick De Graaf, Cees Ha Wittens
Purpose Deep venous thrombosis causes blood flow deviation. It is hypothesized that with stent placement, developed collateral veins become redundant. This article evaluates the relation between the surface area of the collaterals and stent patency. Methods The azygos and hemiazygos veins were identified and the largest surface area was measured at thoracic level. Patency rates of stented tracts were evaluated and related to collateral vein lumen size. Results The vena cava occlusion and the azygos and hemiazygos vein surface area measurements were positive and statistically significant related (OR 1...
January 1, 2018: Phlebology
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