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Arterial catheter

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https://www.readbyqxmd.com/read/28445625/the-use-of-an-occlusion-perfusion-catheter-to-deliver-paclitaxel-to-the-arterial-wall
#1
Marzieh K Atigh, Emily Turner, Uwe Christians, Saami K Yazdani
AIM: Non-stent drug delivery platforms have recently emerged as an alternative treatment of peripheral arterial disease. Perfusion catheters have the potential to directly deliver anti-proliferative agents to the medial arterial layer to prevent restenosis. The purpose of this study was to therefore determine the effectiveness of a perfusion catheter to deliver paclitaxel, a proven anti-proliferative agent, to combat restenosis. METHODS: A bench-top model was utilized to determine the varying parameters of a novel occlusion perfusion catheter to maximize paclitaxel delivery using pharmacokinetic evaluation and fluorescent microscopy...
April 26, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28443484/manual-aspiration-thrombectomy-with-a-penumbra-catheter-for-acute-anterior-cerebral-artery-occlusion
#2
Gyung Ho Chung, Hyo Sung Kwak, Jung Soo Park, Jong Myong Lee
Purpose The purpose of this article is to assess the efficacy and safety of manual aspiration thrombectomy (MAT) using a Penumbra catheter in patients with anterior cerebral artery (ACA) occlusions. Materials and methods From January 2012 to March 2016, 16 patients underwent MAT with Penumbra catheters using a proximal and distal supporting technique to treat ACA occlusions. We evaluated immediate angiographic results and clinical outcomes by reviewing patient electrical medical records. Results Of these patients, 11 had a complete obstruction of the distal internal carotid artery (ICA) and five had ACA and middle cerebral artery (MCA) occlusions...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28441700/ultrasound-based-renal-sympathetic-denervation-for-the-treatment-of-therapy-resistant-hypertension-a-single-center-experience
#3
Karl Fengler, Robert Höllriegel, Thomas Okon, Thomas Stiermaier, Karl-Philipp Rommel, Stephan Blazek, Christian Besler, Max von Roeder, Martin Petzold, Gerhard Schuler, Philipp Lurz
INTRODUCTION: The effectiveness of renal sympathetic denervation (RDN) as a treatment for therapy-resistant hypertension has been doubted as the Simplicity-HTN-3 trial was unable to show any treatment benefit over sham procedure. This might partly be explained by a high procedural variability in treatment with radiofrequency-based catheters. Recently, newer systems for RDN, like ultrasound-based devices, have been introduced into practice. To date however, data on their effectiveness for the treatment of resistant hypertension are scarce...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441644/management-of-guidewire-entrapment-with-laser-atherectomy
#4
Judit Karacsonyi, Jose R Martinez-Parachini, Barbara A Danek, Aris Karatasakis, Imre Ungi, Subhash Banerjee, Emmanouil S Brilakis
A 62-year-old man was referred for percutaneous coronary intervention of a severe circumflex lesion. The guidewire became entangled in the previously implanted left anterior descending artery stent. The left main was engaged with a second guide catheter, followed by balloon dilations, various microcatheters, and laser atherectomy. The wire eventually fractured without protruding into the aorta. The circumflex lesion was stented with two stents, followed by left main stenting that covered the fragment. Caution should be used when wiring through stents; wire fracture can be treated with stent implantation, as long as the wire fragment does not protrude into the aorta...
May 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28441641/low-volume-contrast-ct-angiography-via-pulmonary-artery-injection-for-measurement-of-aortic-annulus-in-patients-undergoing-transcatheter-aortic-valve-replacement
#5
Vien T Truong, Joseph Choo, Luke McCoy, Adam Mussman, Stephanie Ambach, Dean Kereiakes, Ian Sarembock, Wojciech Mazur
OBJECTIVES: To investigate the feasibility and image quality of low-dose contrast computed tomography (CT) angiography with pulmonary artery (PA) protocol. BACKGROUND: Aortic stenosis is the most common valvular heart disease and transcatheter aortic valve replacement (TAVR) has evolved as an alternative method for surgical valve replacement in intermediate-risk and high-risk surgical patients. CT is essential for measurement of aortic annulus prior to TAVR. METHODS: Twenty patients underwent a low-dose contrast study with PA protocol and 20 patients underwent a traditional-dose study (traditional protocol)...
May 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28441053/evaluation-of-oxygen-administration-with-a-high-flow-nasal-cannula-to-clinically-normal-dogs
#6
Jennifer L Daly, Christine L Guenther, Jamie M Haggerty, Iain Keir
OBJECTIVE To evaluate the safety and efficacy of oxygen administration by use of a high-flow nasal cannula (HFNC) in sedated clinically normal dogs. ANIMALS 6 healthy adult dogs undergoing routine dental prophylaxis. PROCEDURES Dogs were sedated with butorphanol tartrate and dexmedetomidine. An esophageal balloon catheter was inserted into the esophagus, a double-pronged nasal cannula was inserted into the nares, and a catheter was inserted into the dorsal pedal artery. Dogs were positioned in right lateral recumbency...
May 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28436566/atrial-fibrillation-originating-from-superior-vena-cava-with-atrial-flutter-electrocardiogram-pattern
#7
Hung-Kai Huang, Shih-Lin Chang, Yenn-Jiang Lin, Li-Wei Lo, Yu-Feng Hu, Fa-Po Chung, Yen-Chang Huang, Chung-Hsing Lin, Chao-Shun Chan, Hung-Yu Chang, Chin-Yu Lin, Yao-Ting Chang, Ching-Hui Huang, Shih-Ann Chen
BACKGROUNDS: Substrate property is related to the genesis and maintenance of atrial fibrillation (AF). The aim of the study was to investigate the impact of substrate property on the electrocardiogram (ECG) in patients with AF originating from the superior vena cava (SVC). METHODS AND RESULTS: Seventy-six patients with AF originating from SVC underwent catheter ablation were included from 2004 to 2013. Of these patients, 16 had a presentation of atrial flutter (AFL)-pattern ECG during AF (group 1), and 60 patients did not (group 2)...
April 24, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28436415/blood-pressure-reduction-in-patients-with-accessory-renal-arteries-and-bilateral-single-renal-arteries-after-catheter-based-renal-denervation-prospective-study-with-3-year-follow-up
#8
Krzysztof Bartus, Jakub Podolec, Jerzy Sadowski, Radosław Litwinowicz, Wojciech Zajdel, Magdalena Bartus, Janusz Konstanty-Kalandyk, Artur Dziewierz, Rafał Trąbka, Stanisław Bartus, Anna Chrapusta, Bogusław Kapelak
INTRODUCTION    Catheter-based renal denervation is an effective treatment leading to significant reduction of systolic and diastolic blood pressure in patients with resistant hypertension. OBJECTIVES    The aim of this prospective study was to assess the BP-lowering effect and pulse pressure lowering effects in patients with accessory and bilateral single renal arteries after catheter-based renal denervation procedure in a 3-year follow-up period. PATIENTS AND METHODS    31 patients with diagnosed resistant hypertension were enrolled in this study...
April 24, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28434735/effects-of-graded-removal-of-lysine-from-an-intravenously-infused-amino-acid-mixture-on-lactation-performance-and-mammary-amino-acid-metabolism-in-lactating-goats
#9
C L Guo, Y T Li, X Y Lin, M D Hanigan, Z G Yan, Z Y Hu, Q L Hou, F G Jiang, Z H Wang
To investigate responses of milk protein synthesis and mammary AA metabolism to a graded decrease of postruminal Lys supply, 4 lactating goats fitted with jugular vein, mammary vein, and carotid artery catheters and transonic blood flow detectors on the external pudic artery were used in a 4 × 4 Latin square experiment. Goats were fasted for 24 h and then received a 9-h intravenous infusion of an AA mixture plus glucose. Milk yield was recorded and samples were taken in h 2 to 8 of the infusion period; a mammary biopsy was performed in the last hour...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28433600/hepatic-arterial-infusion-chemotherapy-for-unresectable-liver-metastases-of-colorectal-cancer-a-multicenter-retrospective-study
#10
REVIEW
Annie Lim, Samuel Le Sourd, Hélène Senellart, Dominique Luet, Frédéric Douane, Christophe Perret, Antoine Bouvier, Sylvie Métairie, Estelle Cauchin, Philippe Rougier, Tamara Matysiak-Budnik, Yann Touchefeu
Hepatic arterial infusion chemotherapy (HAIC) is a treatment used for liver metastases (LM) of colorectal cancer (CRC). Because of its technical conditions, it has been used in only a few experienced centers in France. Our aim was to evaluate its feasibility, efficacy and tolerance in 4 centers. Clinical, biological, and radiological data of patients treated with HAIC for unresectable LM from CRC in 4 institutions from October 2011 to January 2016 were retrospectively analyzed. Sixty-one patients with unresectable LM from CRC were included...
March 14, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28431023/safety-and-efficacy-of-the-sofia-6f-plus-distal-access-reperfusion-catheter-in-the-endovascular-treatment-of-acute-ischemic-stroke
#11
Hussain Shallwani, Hakeem J Shakir, Leonardo Rangel-Castilla, Jason M Davies, Ashish Sonig, Mithun G Sattur, Bernard R Bendok, Kenneth V Snyder, Adnan H Siddiqui, Elad I Levy
BACKGROUND: Neuroendovascular intervention has become a key treatment option for acute ischemic stroke. The Sofia (6F) PLUS catheter was designed for neurovascular access for diagnostic or therapeutic interventions. OBJECTIVE: To report the first series describing use of the Sofia PLUS intermediate/distal access reperfusion catheter in the treatment of acute ischemic stroke. METHODS: In this retrospective study, 41 stroke cases were identified in which the catheter was utilized for thrombolysis/thrombectomy...
April 19, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28430313/successful-balloon-assisted-percutaneous-thrombin-injection-of-right-subclavian-artery-pseudoaneurysm
#12
Andrew D Brown, Dhruvin H Hirpara, Arash Jaberi, George D Oreopoulos, Martin E Simons
PURPOSE: To report the use of a balloon catheter to facilitate percutaneous ultrasound-guided thrombin injection of a subclavian artery pseudoaneurysm. CASE REPORT: A 36-year-old man presented with hoarseness after the insertion of a right temporary internal jugular line. Arteriography showed a short neck right subclavian artery pseudoaneurysm. A 6 mm × 40 mm balloon catheter was positioned across the neck of the pseudoaneurysm to permit percutaneous ultrasound-guided thrombin injection...
April 11, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28430312/inadvertent-cannulation-of-vertebral-artery-with-a-dialysis-catheter
#13
Jan J Stefaniak, Magdalena A Wujtewicz, Maria Wujtewicz
No abstract text is available yet for this article.
April 18, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28429083/intravenous-treprostinil-infusion-via-a-fully-implantable-pump-for-pulmonary-arterial-hypertension
#14
Ralf Ewert, Manuel J Richter, Regina Steringer-Mascherbauer, Ekkehard Grünig, Tobias J Lange, Christian F Opitz, Christian Warnke, Hossein-Ardeschir Ghofrani
OBJECTIVES: Parenteral prostanoids infused via external pumps are well-established pulmonary arterial hypertension (PAH) treatments. However, local side-effects and systemic infections restrict their use. The purpose of this study was to investigate the safety of a fully implantable treprostinil infusion pump (LENUS Pro(®)) in patients with PAH. METHODS: Thirty patients with PAH undergoing pump implantation (with stable PAH therapy for ≥3 weeks pre-implantation) were included in this prospective, multicenter, observational study (NCT01979822)...
April 20, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28429033/clinics-in-diagnostic-imaging-176-acute-embolic-occlusion-of-the-coeliac-artery
#15
Chinthaka Appuhamy, Justin Kwan, Martin Weng Chin H'ng, Sriram Narayanan, Sundeep Punamiya
A 52-year-old man, who had a background of chronic heart disease and atrial fibrillation, as well as non-compliance with warfarin therapy, presented with a two-week history of worsening upper abdominal pain. Computed tomography mesenteric angiography showed complete embolic occlusion of the coeliac artery with resultant segmental splenic infarction, and thrombus within the left ventricle. A decision was made to proceed with catheter-directed thrombolysis. Subsequent follow-up angiogram at 12 hours showed successful treatment with complete dissolution of the coeliac embolus...
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28427735/comparison-of-frequency-and-characteristics-of-patients-with-atrial-fibrillation-having-ablation-with-versus-without-coronary-narrowing-%C3%A2-50-by-angiography
#16
Toshiro Tomomatsu, Itsuro Morishima, Kenji Okumura, Hideyuki Tsuboi, Yasuhiro Morita, Kensuke Takagi, Ruka Yoshida, Hiroaki Nagai, Yoshihiro Ikai, Naoki Shibata, Kazuhito Tsuzuki, Takahito Sone, Toyoaki Murohara
Atrial fibrillation (AF) shares background comorbidities with coronary artery disease (CAD), including hypertension and diabetes mellitus. The aim of the study is to evaluate the prevalence, risk factors, and prognostic significance of CAD among patients who underwent catheter ablation for AF. In 544 consecutive registered patients who underwent catheter ablation for AF (CHADS2 score 1.2 ± 1.1, paroxysmal AF 57%), quantitative coronary angiography was used to detect CAD, defined as luminal narrowing of ≥50% in diameter...
March 16, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28427593/economic-outcomes-of-bioresorbable%C3%A2-vascular-scaffolds-versus%C3%A2-everolimus-eluting-stents-in-patients%C3%A2-undergoing-percutaneous-coronary-intervention-1-year-results-from-the-absorb%C3%A2-iii-trial
#17
Suzanne J Baron, Yang Lei, Khaja Chinnakondepalli, Katherine Vilain, Elizabeth A Magnuson, Dean J Kereiakes, Stephen G Ellis, Gregg W Stone, David J Cohen
OBJECTIVES: The purpose of this study was to evaluate the economic impact of the Absorb bioresorbable vascular scaffold compared with the Xience everolimus-eluting stent in patients undergoing percutaneous coronary intervention. BACKGROUND: The ABSORB III trial (Everolimus-Eluting Bioresorbable Scaffolds for Coronary Artery Disease) demonstrated that the Absorb scaffold was noninferior to the Xience stent with respect to target lesion failure at 1 year. Whether health care costs differ between the Absorb scaffold and the Xience stent is unknown...
April 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28427082/perioperative-outcomes-and-safety-of-atrial-fibrillation-catheter-ablation-in-octogenarians-a-retrospective-study-and-review-of-the-benefits-of-rhythm-control
#18
Stephanie Hakimian, Juan C Camacho, Edwin Grajeda Silvestri, Farid AbdelMalak, Elie Donath, Robert Chait
OBJECTIVES: Catheter ablation for rhythm control has emerged as a successful therapeutic option for the treatment of atrial fibrillation (AF), though it has not been well studied in octogenarians. This study evaluates its safety in octogenarians in a community hospital and reviews the benefits of rhythm control. METHODS: Among 1,592 patients undergoing AF ablation, 84 octogenarian were identified. The primary outcome was normal sinus rhythm (NSR) on electrocardiogram at discharge...
April 21, 2017: Cardiology
https://www.readbyqxmd.com/read/28425161/atorvastatin-treatment-modulates-p16-promoter-methylation-to-regulate-p16-expression
#19
Boqian Zhu, Yaoyao Gong, Gaoliang Yan, Dong Wang, Qingjie Wang, Yong Qiao, Jiantong Hou, Bo Liu, Chengchun Tang
Intimal hyperplasia, the key event of artery restenosis, was a result of cell proliferation and cell migration. Atorvastatin experts an inhibitory effect on cell proliferation and migration but its mechanism remains largely unknown. p16, as a well-known tumor suppressor, was also reported to suppress cell growth and migration, but with vague mechanism. In this study, we demonstrated atorvastatin represses cell proliferation and migration in vascular smooth muscle cells (VSMCs), which process is mediated by p16...
April 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28422910/incremental-balloon-deflation-following-complete-reboa-results-in-steep-inflection-of-flow-and-rapid-reperfusion-in-a-large-animal-model-of-hemorrhagic-shock
#20
Anders J Davidson, Rachel M Russo, Sarah-Ashley E Ferencz, Jeremy W Cannon, Todd E Rasmussen, Lucas P Neff, M Austin Johnson, Timothy K Williams
INTRODUCTION: To avoid potential cardiovascular collapse after Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA), current guidelines recommend methodically deflating the balloon over 5 minutes to gradually reperfuse distal tissue beds. However, anecdotal evidence suggests that this approach may still result in unpredictable aortic flow rates and hemodynamic instability. We sought to characterize aortic flow dynamics following REBOA as the balloon is deflated in accordance with current practice guidelines...
April 18, 2017: Journal of Trauma and Acute Care Surgery
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