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Guide extension catheter

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https://www.readbyqxmd.com/read/28759818/histological-topography-of-the-atrioventricular-node-and-its-extensions-in-relation-to-the-cardiothoracic-surgical-landmarks-in-normal-human-hearts
#1
Arpandeep Randhawa, Tulika Gupta, Anjali Aggarwal, Daisy Sahni, Rana Sandip Singh
BACKGROUND: Atrioventricular (AV) nodal injury which results in cardiac conduction disorders is one of the potential complications of heart valve surgeries and radiofrequency catheter ablations. Understanding the topography of the AV conduction system in relation to the tricuspid and mitral valves will help in reducing these complications. METHODS: A tissue block of 3cmx4cm, which contain the AV node, bundle of His and the AV nodal extensions, was excised at the AV septal junction in 20 apparently normal human hearts...
June 30, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28758547/design-of-a-sensorized-guiding-catheter-for-in-situ-laser-fenestration-of-endovascular-stent
#2
Roberta Piazza, Sara Condino, Aldo Alberti, Raffaella Nice Berchiolli, Gioachino Coppi, Marco Gesi, Vincenzo Ferrari, Mauro Ferrari
PURPOSE: The in situ fenestration of a standard endograft is currently limited by difficulties in targeting the fenestration site under fluoroscopic control and by the lack of a safe method to perforate the graft. Evidence in the literature suggests the use of a 3 D electromagnetic navigator to accurately guide the endovascular instruments to the target and a laser to selectively perforate the graft. The aim of this work is to provide design guidelines to develop a sensorized catheter to guide the laser tool to the fenestration site and conduct preliminary testing of the feasibility of the proposed solution...
December 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/28752008/importance-of-sonography-for-guiding-central-venous-cannulation-in-patients-with-neurofibromatosis
#3
V K Mohan, Neisevilie Nisa
A 15-year-old boy with neurofibromatosis type 1 (NF1) was referred to us for central venous catheter insertion, and on ultrasound of the neck, he was found to have extensive involvement of the brachial plexus due to the nerve sheath tumour. Multiple hypoechogenic lesions resembling the internal jugular vein and internal carotid artery were visualised and could be differentiated from the vessels by Doppler ultrasound. The importance of analyzing sonographic images of nerve sheath tumours, which can mimic blood vessels, and the importance of Doppler ultrasound for guiding central venous catheters in such patients to avoid nerve injury are discussed in this case report...
June 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28705343/-recanalization-procedure-of-the-common-femoral-vein-following-iatrogenic-femoral-chronic-occlusion-3%C3%A2-cases
#4
G Goudot, C Del Giudice, O Pellerin, M C Courtois, A Galloula, E Messas, T Mirault, M Sapoval
Common femoral vein occlusion (CFVO) is frequently found in patients with chronic venous insufficiency. The iatrogenic form, secondary to either central catheter or surgery, is very rare but highly symptomatic. Classical compression therapy barely improves the clinical status of these patients, making them suitable candidates for an interventional procedure for venous recanalization. METHODS: We report here three consecutive cases of iatrogenic CFVO referred to our outpatient clinic because the disease had an impact on daily life activities...
July 2017: J Med Vasc
https://www.readbyqxmd.com/read/28619490/use-of-simple-neck-extension-to-improve-guiding-catheter-accessibility-in-tortuous-cervical-internal-carotid-artery-for-endovascular-embolization-of-intracranial-aneurysm-a-technical-note
#5
Megumu Takata, Hitoshi Fukuda, Masanori Kinosada, Kosuke Miyake, Kenichi Murao
No abstract text is available yet for this article.
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28539570/usefulness-and-safety-of-a-novel-modification-of-the-retrograde-approach-for-the-long-tortuous-chronic-total-occlusion-of-coronary-arteries
#6
Zehan Huang, Bin Zhang, Weilu Chai, Dunliang Ma, Hongtao Liao, Zhian Zhong, Feng Wang, Jingye Lin
The aim of this study was to evaluate the feasibility and efficacy of the Guidezilla guide extension catheter in a reverse controlled antegrade and retrograde subintimal tracking (CART) technique for chronic total occlusion (CTO) recanalization.We retrospectively collected 80 CTO cases using reverse CART technology from January 2015 to October 2015 and 20 CTO cases using Guidezilla reverse-CART technology from October 2015 to March 2016. Guidezilla was applied in cases when it was difficult to advance a retro-guidewire through an occlusion segment into the antegrade guide catheter...
May 31, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28533503/guide-catheter-extension-device-is-effective-in-renal-angioplasty-for-severely-calcified-lesions
#7
Takeshi Sugimoto, Tetsuya Nomura, Yusuke Hori, Kenichi Yoshioka, Hiroshi Kubota, Daisuke Miyawaki, Ryota Urata, Masakazu Kikai, Natsuya Keira, Tetsuya Tatsumi
BACKGROUND The GuideLiner catheter extension device is a monorail-type "Child" support catheter that facilitates coaxial alignment with the guide catheter and provides an appropriate back-up force. This device has been developed in the field of coronary intervention, and now is becoming widely applied in the field of endovascular treatment. However, there has been no report on the effectiveness of the guide catheter extension device in percutaneous transluminal renal angioplasty (PTRA). CASE REPORT We encountered a case of atherosclerotic subtotal occlusion at the ostium of the left renal artery...
May 23, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28377943/expert-evaluation-of-a-chicken-tissue-based-model-for-teaching-ultrasound-guided-central-venous-catheter-insertion
#8
Akiva Nachshon, John D Mitchell, Ariel Mueller, Valerie M Banner-Goodspeed, Jakob I McSparron
BACKGROUND: Ultrasound-guided central venous catheterization (CVC) is a commonly performed procedure which carries significant risks for complications. Current models used for simulation-based teaching are expensive and may not replicate tissue feel and ultrasound qualities of human tissues. We aimed to evaluate a tissue model composed of chicken breast and balloons and compare it to a commercially available mannequin. METHODS: Forty attending physicians from four departments with extensive CVC experience were enrolled...
January 2017: Journal of Education in Perioperative Medicine: JEPM
https://www.readbyqxmd.com/read/28366657/normal-porcine-ureter-retains-lumen-wall-integrity-but-not-patency-following-catheter-directed-irreversible-electroporation-imaging-and-histologic-assessment-over-28-days
#9
Govindarajan Srimathveeravalli, Francois Cornelis, Thomas Wimmer, Sebastien Monette, Simon Y Kimm, Majid Maybody, Stephen B Solomon, Jonathan A Coleman, Jeremy C Durack
PURPOSE: To evaluate the effect of catheter-directed irreversible electroporation (IRE) on the integrity, patency, and function of the normal porcine ureter. MATERIALS AND METHODS: A catheter-mounted electrode was used to perform fluoroscopy-guided IRE in 8 healthy pigs. Two unilateral ablations (90 pulses at 2,000 V, 100 μs) were performed in each animal in the proximal and distal ureter. Serum creatinine measurements and contrast-enhanced computed tomography imaging were performed at 1, 7, 14, 21, and 28 days after IRE, and findings were compared with baseline values by Student t test...
June 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28275025/hepatocolic-fistula-a-rare-presentation-of-pyogenic-liver-abscess
#10
Aeden Bernice G Timbol, Karen Anjela M Mondragon, Virgilio P Banez
A 58-year-old man was admitted due to a 4-month history of colicky right upper quadrant pain, intermittent fever, anorexia and weight loss. A contrast-enhanced CT scan of the abdomen showed an encapsulated, peripherally enhancing focus occupying the right liver lobe exhibiting capsular rupture and extension to the walls of the hepatic flexure. He immediately underwent emergency ultrasound-guided percutaneous catheter drainage and cultures of the purulent fluid later revealed Escherichia coli A colonoscopy was then performed which showed a pinpoint opening with draining pus at the hepatic flexure...
March 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28138123/initial-experience-and-feasibility-of-the-new-low-profile-stingray-catheter-as-part-of-the-antegrade-dissection-and-re-entry-revascularization-strategy-for-coronary-chronic-total-occlusions
#11
Joren Maeremans, Pieter-Jan Palmers, Joseph Dens
BACKGROUND During antegrade dissection re-entry (ADR) of chronic total occlusions (CTO), the first-generation Stingray catheter requires the use of large-bore guides (sheathless 7.5 Fr or 8 Fr), which increases the risk for access site-related complications and compromises radial approaches. Smaller guiding sizes necessitate long guidewires (e.g., 300 cm) or guidewire extensions for catheter advancement or removal. However, friction between guides and the Stingray catheter can result in unstable guidewire position or unintentional removal...
January 31, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28108499/relay-balloon-technique-for-recanalization-of-acute-symptomatic-proximal-internal-carotid-artery-occlusion-with-short-balloon-tipped-guiding-catheter-landing-zone
#12
Sang Hun Lee, Dong Geun Lee, Sun U Kwon, Deok Hee Lee
BACKGROUND: Endovascular recanalization of a completely occluded proximal internal carotid artery (ICA) with underlying stenosis may be challenging owing to a possible thrombotic component. This is especially true when the landing zone for a balloon-tipped guiding catheter (BGC) at the bulb portion is insufficient. Sequential application of the balloons of a BGC and an angioplasty catheter may prevent thromboembolism during revascularization. This study analyzed the safety and effectiveness of this relay-balloon technique...
January 20, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28093693/a-simple-post-mortem-room-angiography-method-for-the-investigation-of-traumatic-basal-subarachnoid-hemorrhage
#13
Christopher P Johnson, Mike Murphy, George A Johnson, Stephen M Wills, Jonathan E Medcalf
Identifying the site of vascular bleeding in fatal cases of traumatic basal subarachnoid hemorrhage (TBSAH) is important, but can be very difficult to achieve when there is extensive blood clot in the posterior cranial fossa. Post mortem angiography in these circumstances has been reported previously but with mixed results, and is rarely used in current practice within the United Kingdom. We have developed a simple and effective post mortem angiography method, using fluoroscopy and clear modern contrast medium, suitable for use in the autopsy room...
March 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28031675/spontaneous-resolution-of-catheter-induced-iatrogenic-vein-graft-dissection-first-case-report-and-review-of-literature
#14
Prakash Suryanarayana, Shubha Kollampare, Mohammad Reza Movahed
An 86-year-old female patient with a history of bypass surgery was admitted for recurrent dyspnea and chest pain on exertion. She underwent coronary angiography showing high-grade saphenous vein graft stenosis supplying the right coronary. During an attempt to perform percutaneous intervention, saphenous vein graft to the right coronary artery was injured by the guide catheter resulting in dissection with thrombus formation but with normal distal blood flow. The procedure was abandoned since she had normal distal flow and also due to a fear of causing extension of the dissection with further manipulation...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/27987034/retrograde-suction-decompression-of-a-large-internal-carotid-aneurysm-using-a-balloon-guide-catheter-combined-with-a-blood-returning-circuit-and-sta-mca-bypass-a-technical-note
#15
Fumihiro Matano, Takayuki Mizunari, Shushi Kominami, Masanori Suzuki, Yu Fujiki, Asami Kubota, Shiro Kobayashi, Yasuo Murai, Akio Morita
It is difficult to treat large internal carotid aneurysms with simple surgical clipping. Here, we present a retrograde suction decompression (RSD) procedure for large internal carotid aneurysms using a balloon guide catheter combined with a blood-returning circuit and a superficial temporal artery to middle cerebral artery (STA-MCA) bypass.All patients underwent an STA-MCA bypass before the temporary occlusion of the internal carotid artery (ICA). A 6-French sheath was inserted into the common carotid artery (CCA), and a 6-French Patrive balloon catheter was placed into the ICA 5 cm past the bifurcation...
April 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/27976794/mother-and-child-catheter-facilitated-optical-coherence-tomography-a-novel-approach-to-improve-intracoronary-imaging
#16
Marcos Garcia-Guimaraes, Javier Cuesta, Fernando Rivero, Teresa Alvarado, Gonzalo Navarrete, Teresa Bastante, Amparo Benedicto, Fernando Alfonso
BACKGROUND: Our aim was to prospectively analyze the usefulness of mother-and-child catheter approach with the GuideLiner® (GL) catheter extension system to overcome some potential limitations associated with the use of optical coherence tomography (OCT). METHODS: We included consecutive patients referred to our institution for coronary angiogram in whom OCT image acquisition was obtained using GL. From February 2015 to May 2016, a total of 19 procedures (18 patients) were prospectively included...
2016: Cardiology Journal
https://www.readbyqxmd.com/read/27862338/efficacy-and-safety-of-the-guideliner-mother-in-child-guide-catheter-extension-in-percutaneous-coronary-intervention
#17
Divyesh Sharma, Ashish Shah, Mark Osten, Douglas Ing, Alan Barolet, Christopher B Overgaard, Vladimír Džavík, Peter H Seidelin
BACKGROUND: Percutaneous coronary intervention (PCI) procedures are increasingly performed on complex tortuous and heavily calcified coronary lesions. The GuideLiner® catheter (Vascular Solutions, Inc. Minneapolis, MN) is a rapid exchange guide catheter extension system. There is paucity of data about the efficacy of this device in complex PCI. Therefore, we aim to report the indications, success, and efficacy of GuideLiner use in treating complex lesion subset in the present study. METHODS: We collected data from all patients in whom the GuideLiner was used to facilitate PCI between April 1, 2011 and December 31, 2014 at a tertiary referral center in Toronto, Canada...
February 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/27845655/a-hidden-markov-model-for-3d-catheter-tip-tracking-with-2d-x-ray-catheterization-sequence-and-3d-rotational-angiography
#18
Pierre Ambrosini, Ihor Smal, Daniel Ruijters, Wiro J Niessen, Adriaan Moelker, Theo Van Walsum
In minimal invasive image guided catheterization procedures, physicians require information of the catheter position with respect to the patient's vasculature. However, in fluoroscopic images, visualization of the vasculature requires toxic contrast agent. Static vasculature roadmapping, which can reduce the usage of iodine contrast, is hampered by the breathing motion in abdominal catheterization. In this paper, we propose a method to track the catheter tip inside the patient's 3D vessel tree using intra-operative single-plane 2D X-ray image sequences and a peri-operative 3D rotational angiography (3DRA)...
March 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27757830/off-label-use-of-7fr-guideliner-in-the-bifurcation-coronary-intervention-protecting-2-side-branches
#19
Takayuki Warisawa, Toru Naganuma, Sunao Nakamura
We report a case of percutaneous coronary intervention in a bifurcation lesion involving left circumflex (LCx) artery and 2 major posterolateral (PL) arteries. The target LCx had diffuse long and severely calcified lesion with the acute takeoff angle from the left main. Despite adequate lesion preparation with rotational atherectomy and balloon angioplasty, the stent was not deliverable, even with deep intubation of 7Fr-guiding catheter. Conventional use of guiding extension catheter (GEC) would have required removal of a wire from at least one PL because of the device interference in the GEC...
October 18, 2016: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/27638104/guide-extension-catheter-stepwise-advancement-facilitated-by-repeated-distal-balloon-anchoring
#20
Constantinos Andreou, Ioannis Karalis, Christos Maniotis, Johan W Jukema, Michael Koutouzis
Coronary stent delivery can be extremely challenging in tortuous and calcified lesions especially when radial approach is chosen. Guide extension catheter is a useful tool for overcoming the inherent difficulties arising by the use of radial access in complex percutaneous interventions. We describe a technique for guide extension catheter system advancement by presenting two cases. This was performed stepwise by repeated distal balloon anchoring in the coronary artery of interest.
January 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
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