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Arterial catheter

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https://www.readbyqxmd.com/read/29935157/control-of-renal-sympathetic-nerve-activity-by-neurotransmitters-in-the-spinal-cord-in-goldblatt-hypertension
#1
Maycon I O Milanez, Érika E Nishi, Alex Y S Sato, Henrique A Futuro Neto, Cássia T Bergamaschi, Ruy R Campos
The role of spinal cord neurons in renal sympathoexcitation remains unclear in renovascular hypertension, represented by the 2-kidney, 1-clip (2K1C) model. Thus, we aimed to assess the influence of spinal glutamatergic and AT1 angiotensin II receptors on renal sympathetic nerve activity (rSNA) in 2K1C Wistar rats. Hypertension was induced by clipping the renal artery with a silver clip. After six weeks, a catheter (PE-10) was inserted into the subarachnoid space and advanced to the T10-11 vertebral level in urethane-anaesthetized rats...
June 20, 2018: Brain Research
https://www.readbyqxmd.com/read/29933779/the-role-of-transcatheter-arterial-embolization-in-the-management-of-nonvariceal-upper-gastrointestinal-bleeding
#2
REVIEW
Dan E Orron, Allan I Bloom, Ziv Neeman
Nearly 50 years ago, catheter angiography was introduced as a means of both diagnosing and treating nonvariceal upper gastrointestinal bleeding. Technological advances and innovations have resulted in the introduction of microcatheters that, using a coaxial technique, are capable of selecting third-order arterial branches and of delivering a wide array of embolic agents. This article reviews the imaging diagnosis of nonvariceal upper gastrointestinal bleeding, the techniques of diagnostic and therapeutic angiography, the angiographic appearance of the various etiologies of nonvariceal upper gastrointestinal bleeding, the rationale behind case-specific selection of embolic agents as well as the anticipated outcome of transcatheter arterial embolization...
July 2018: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/29932032/liver-radioembolization-an-analysis-of-parameters-that-influence-the-catheter-based-particle-delivery-via-cfd
#3
Jorge Aramburo, Raul Anton, Alejandro Rivas, Juan Carlos Ramos, Bruno Sangro, Jose Ignacio Bilbao
Radioembolization (RE) is a valuable treatment for liver cancer. It consists of administering radioactive microspheres via an intra-arterially placed catheter with the aim of lodging these microspheres, which are driven by the bloodstream, in the tumoral bed. Even though it is a safe treatment, some radiation-induced complications may arise. In trying to detect or solve the possible incidences that cause nontarget irradiation, simulating the particle-hemodynamics in hepatic arteries during RE via computational fluid dynamics (CFD) tools has become a valuable approach...
June 22, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29931540/evaluation-of-the-pulmonary-artery-potential-using-a-20-polar-circumferential-catheter-and-three-dimensional-integrated-intracardiac-echocardiography
#4
Masayuki Takahashi, Hisashi Yokoshiki, Hirofumi Mitsuyama, Taro Tenma, Masaya Watanabe, Rui Kamada, Ryo Sasaki, Yuki Chiba, Motoki Maeno, Toshihisa Anzai
Prolongation of the pulmonary artery potentials (PAPs) in response to short coupling intervals was related to polymorphic QRS configurations during the ventricular tachycardia originating above the pulmonary valve (PA-VT). This prospective study was aimed to investigate the mechanisms of polymorphic changes during the PA-VT. We performed the mapping above the pulmonary valve using a 20-polar circumferential catheter and three-dimensional integrated intracardiac echocardiography in 9 consecutive patients with outflow tract arrhythmias undergoing catheter ablation (UMIN ID: UMIN000021682)...
June 21, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29930471/transarterial-embolization-and-low-dose-continuous-hepatic-arterial-infusion-chemotherapy-with-oxaliplatin-and-raltitrexed-for-hepatocellular-carcinoma-with-major-portal-vein-tumor-thrombus
#5
Lin-Zhong Zhu, Song Xu, Hai-Long Qian
AIM: To determine the efficacy and safety of transarterial embolization and low-dose continuous hepatic arterial infusion chemotherapy with oxaliplatin and raltitrexed in hepatocellular carcinoma (HCC) with major portal vein tumor thrombus (MPVTT). METHODS: Eighty-six patients with MPVTT accepted routine embolization. The catheter was kept in the hepatic artery and oxaliplatin (50 mg in 250 mL of glucose) was infused by pump for 4 h, followed by raltitrexed (2 mg in 100 mL of 0...
June 21, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29930186/acute-renal-artery-embolisation-role-of-local-catheter-based-intra-arterial-thrombolysis
#6
Neeraj Ganju, Sachin Sondhi, Arvind Kandoria
A 45-year-old man without previous comorbidity presented to us with acute onset right-sided flank pain for last 14 hours. His general physical and systemic examination was unremarkable, and there were no clinical signs of peritonitis. The ultrasonography did not reveal any evidence of nephrolithiasis or hydronephrosis. His contrast-enhanced CT scan revealed hypoattenuated areas of right kidney and evidence of right renal artery thrombosis. He was immediately shifted to cardiac catheterisation lab, and his renal angiography showed thrombotic occlusion of right renal artery...
June 21, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29930008/postprandial-hyperchylomicronemia-and-thin-cap-fibroatheroma-in-nonculprit-lesions-a-multivessel-optical-coherence-tomography-study
#7
Osamu Kurihara, Fumitaka Okajima, Masamichi Takano, Katsuhito Kato, Ryo Munakata, Daisuke Murakami, Yasushi Miyauchi, Naoya Emoto, Hitoshi Sugihara, Yoshihiko Seino, Wataru Shimizu
OBJECTIVE: Although postprandial hypertriglyceridemia can be a risk factor for coronary artery disease, the extent of its significance remains unknown. This study aimed to investigate the correlation between the postprandial lipid profiles rigorously estimated with the meal tolerance test and the presence of lipid-rich plaque, such as thin-cap fibroatheroma (TCFA), in the nonculprit lesion. APPROACH AND RESULTS: A total of 30 patients with stable coronary artery disease who underwent a multivessel examination using optical coherence tomography during catheter intervention for the culprit lesion were enrolled...
June 21, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29929894/pulmonary-artery-catheter-placement-aided-by-transesophageal-echocardiography-versus-pressure-waveform-transduction
#8
Brett Cronin, Nikolai Kolotiniuk, Kevin Youssefzadeh, Beverly Newhouse, Ulrich Schmidt, E Orestes O'Brien, Timothy Maus
OBJECTIVE: To compare pulmonary artery catheter (PAC) placement by transesophageal echocardiography combined with pressure waveform transduction versus the traditional technique of pressure waveform transduction alone. DESIGN: A prospective, randomized trial. SETTING: Single university hospital. PARTICIPANTS: Forty-eight patients with chronic thromboembolic pulmonary hypertension (CTEPH) scheduled for pulmonary thromboendarterectomy...
June 18, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29926912/inotropic-and-lusitropic-effects-of-levosimendan-and-milrinone-assessed-by-strain-echocardiography-a-randomised-trial
#9
M Fredholm, K Jörgensen, E Houltz, S-E Ricksten
BACKGROUND: We compared the direct inotropic and lusitropic effects of two inodilators, milrinone and levosimendan in patients after aortic valve replacement for aortic stenosis. METHODS: In this randomised, blinded study, 31 patients with normal LV function, were randomised to either levosimendan (0.1 and 0.2 μg/kg/min, n = 15) or milrinone (0.4 and 0.8 μg/kg/min, n = 16) after aortic valve replacement. The effects on LV performance, LV strain, systolic (SR-S) and early diastolic (SR-E) strain rate were assessed by a pulmonary artery catheter and transoesophageal two-dimensional speckle tracking echocardiography of the LV inferior wall...
June 21, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29926571/-acute-limb-ischemia
#10
Damme H Van, E Boesmans, J O Defraigne
Despite major advances in the contemporary management of peripheral arterial occlusive disease, acute ischemia of the lower limb is still characterized by an important morbidity, limb threat, and mortality, and continues to pose a challenge to the vascular surgeon. Ageing of the population increases the prevalence of acute lower limb ischemia. The two principal etiologies of acute ischemia of the lower limbs are arterial embolism and in situ thrombosis of an atherosclerotic artery or of a bypass graft. Popliteal aneurysm thrombosis and vascular trauma are less common causes of severe limb ischemia...
May 2018: Revue Médicale de Liège
https://www.readbyqxmd.com/read/29925397/right-heart-catheterization-using-metallic-guidewires-and-low-sar-cardiovascular-magnetic-resonance-fluoroscopy-at-1-5-tesla-first-in-human-experience
#11
Adrienne E Campbell-Washburn, Toby Rogers, Annette M Stine, Jaffar M Khan, Rajiv Ramasawmy, William H Schenke, Delaney R McGuirt, Jonathan R Mazal, Laurie P Grant, Elena K Grant, Daniel A Herzka, Robert J Lederman
BACKGROUND: Cardiovascular magnetic resonance (CMR) fluoroscopy allows for simultaneous measurement of cardiac function, flow and chamber pressure during diagnostic heart catheterization. To date, commercial metallic guidewires were considered contraindicated during CMR fluoroscopy due to concerns over radiofrequency (RF)-induced heating. The inability to use metallic guidewires hampers catheter navigation in patients with challenging anatomy. Here we use low specific absorption rate (SAR) imaging from gradient echo spiral acquisitions and a commercial nitinol guidewire for CMR fluoroscopy right heart catheterization in patients...
June 21, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29925182/-effect-of-5f-tiger%C3%A2-catheter-shaping-technique-in-complex-coronary-angiography
#12
T Liu, P Zhou, H Chen
Objective: To observe the effect of 5 F Tiger Ⅰ catheter shaping technique in complex coronary angiography. Methods: This study was a single-center, single-blind, randomized, parallel controlled trial and subjects were consecutively enrolled if the first coronary angiography could not be completed by 5 F Tiger Ⅰ catheterization at our department from January 2016 to June 2017 ( n= 159). The subjects were divided into 2 groups using a random number table method: 79 patients in the control group, and 6 F Judkins and Amplatz catheters were used to perform coronary angiography through the radial artery; 80 patients in the experimental group, and 5 F Tiger Ⅰ shaping technique were used to perform coronary angiography through the radial artery...
June 24, 2018: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29924782/-transradial-approach-in-carotid-stenting
#13
I N Shchanitsyn, M R Sharafutdinov, R A Iakubov, I V Larin
A femoral approach is the main access in stenting of carotid arteries, mainly due to rapid training in how to perform the procedure and a possibility of using large-diameter catheters. However, this approach is not always feasible in atherosclerosis, tortuosity of lower-limb arteries and in certain anatomical peculiarities of the aortic arch. Using a transradial approach is based on the desire to diminish the incidence rate of haemorrhagic complications in the zone of the puncture and to avoid the necessity of a long-term bed rest...
2018: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29923135/attenuation-of-pulse-pressure-amplification-in-patients-with-complete-transposition-of-the-great-arteries-after-an-arterial-switch-operation-in-children
#14
Tomoaki Murakami, Masahiro Shiraishi, Taro Murakami, Atsuhito Takeda
Although the arterial switch operation has become the standard procedure for infants with complete transposition of the great arteries, possible late adverse events after surgery have not been fully elucidated. One such problem may be the postoperative function of the aorta that is radically manipulated. The current study enrolled 12 patients aged 4-9 years who had undergone an arterial switch operation. The ascending and descending aortic pressure waveforms were recorded by a catheter-mounted pressure sensor...
June 19, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29922410/iatrogenic-extravasation-and-extracranial-ica-dissection-during-neurointervention-evaluated-by-transoral-carotid-ultrasonography-case-report
#15
Ryo Itabashi, Eisuke Furui, Ichiro Suzuki, Toshio Kikuchi, Ryushi Kondo, Yasushi Matsumoto, Satoru Fujiwara
We described an 88-year-old woman presented with large aneurysm on the carotid siphon of the right internal carotid artery (ICA). Digital subtraction angiography showed extravasation from the distal cervical segment of the right ICA due to positioning a guiding catheter for intra-aneurysmal coil embolization. Transoral carotid ultrasonography (TOCU) showed arrested bleeding and a pseudolumen in the distal cervical segment of the right ICA. We originally described that TOCU was useful for evaluating iatrogenic extravasation and extracranial ICA dissection during neurointervention...
June 2018: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/29921545/utility-of-catheter-extension-devices-in-coronary-artery-anomalies
#16
Eva Rumiz, Ernesto Valero, Juan Vicente Vilar, Pablo Almela, Javier Haba
No abstract text is available yet for this article.
June 16, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29921223/from-debulking-to-delivery-sequential-use-of-rotational-atherectomy-and-guidezilla%C3%A2-for-complex-saphenous-vein-grafts-intervention
#17
Mariano Pellicano, Vincent Floré, Emanuele Barbato, Bernard De Bruyne
BACKGROUND: Percutaneous coronary interventions (PCI) of old calcified saphenous vein grafts (SVGs) is challenging and is associated with a considerably high risk of adverse ischemic events in the short- and long-term as compared to native coronary arteries. We report a case in which a non-dilatable, calcified SVG lesion is successfully treated with rotational atherectomy followed by PCI and stenting with local stent delivery (LSD) technique using the Guidezilla™ guide extension catheter (5-in-6 Fr) in the "child-in-mother" fashion...
June 19, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29921152/onyx-embolization-of-a-pial-av-fistula-with-a-giant-venous-varix-using-a-flow-directed-scepter-balloon-catheter-technical-note
#18
Andrew S Griffin, Nicholas Befera, Erik Hauck
Background and importance Pial arteriovenous fistulas (AVFs) of the brain are treacherous lesions that can be challenging to treat because of high risk of hemorrhage. We report on a rare case of a pial AVF with a giant venous varix as a draining vein treated successfully with flow-directed balloon-assisted Onyx embolization. Clinical presentation A 56-year-old female with headaches underwent brain magnetic resonance imaging, which demonstrated a 4 cm aneurysmal malformation in the right temporal lobe. A diagnostic cerebral angiogram demonstrated a right temporal pial AVF fed by an enlarged right posterior cerebral artery with drainage into a giant venous varix...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29915795/saddle-pulmonary-embolus-resulting-in-cardiovascular-collapse-requiring-extracorporeal-membrane-oxygenation-in-a-postoperative-patient-with-endometrial-cancer
#19
David Samuel, Gregory M Gressel, Sara Isani, Akiva P Novetsky, Nicole S Nevadunsky
Background: Venous thromboembolism after open gynecologic surgery is not uncommon, especially in the presence of other risk factors such as obesity, prolonged surgical time or gynecologic malignancy. Case: We present the case of a 62 y.o. patient who underwent open hysterectomy and surgical staging for uterine serous carcinoma. She was readmitted with lower extremity edema. During her workup, she underwent cardiovascular arrest secondary to saddle pulmonary embolus requiring cardiopulmonary resuscitation and extracorporeal membrane oxygenation...
May 2018: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/29913936/a-systematic-review-of-comparative-studies-indicates-that-paravertebral-block-is-neither-superior-nor-safer-than-epidural-analgesia-for-pain-after-thoracotomy
#20
Hilde M Norum, Harald Breivik
Background The "gold standard" for pain relief after thoracotomy has been thoracic epidural analgesia (TEA). The studies comparing TEA with paravertebral block (PVB) and recent reviews recommend PVB as a novel, safer method than TEA. Methods A systematic search of the Cochrane and PubMed databases for prospective, randomized trials (RCTs) comparing TEA and PVB for post-thoracotomy analgesia was done. We assessed how TEA and PVB were performed, methods of randomization, assessment of pain relief, and complications...
December 29, 2017: Scandinavian Journal of Pain
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