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https://www.readbyqxmd.com/read/28944620/intracoronary-snaring-of-the-retrograde-guidewire-how-to-overcome-extreme-takeoff-angles-in-chronic-total-occlusion-percutaneous-coronary-intervention
#1
Lorenzo Azzalini, Luciano Candilio, Mauro Carlino, Antonio Colombo
Extreme angulation of coronary artery takeoff represents a challenge for wiring and device advancement in percutaneous coronary intervention (PCI). This anatomic feature is particularly adverse in cases of chronic total occlusion (CTO) of the ostial-proximal segment of the target vessel. In this setting, the retrograde approach can help getting access to the occlusion. However, difficulties might arise at the critical step of wire externalization, due to the need to overcome the extreme ostial angle. Here, we describe a case of successful CTO PCI of the proximal circumflex artery, which presented an extreme angle at its takeoff...
September 25, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28941981/guidewire-driven-left-ventricular-pacing-during-transcatheter-aortic-valve-implantation
#2
Luis-Salvador Díaz de la Llera, José María Cubero Gómez, Sara Casquero Domínguez, Mónica Fernández Quero, Manuel Villa Gil-Ortega, Agustín Guisado Rasco
No abstract text is available yet for this article.
September 20, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28940991/guidewire-electrosurgery-assisted-trans-septal-puncture
#3
Jaffar M Khan, Toby Rogers, Marvin H Eng, Robert J Lederman, Adam B Greenbaum
OBJECTIVES: Electrifying a coronary guidewire may be a simple escalation strategy when trans-septal needle puncture is unsuccessful. BACKGROUND: Radiofrequency energy to facilitate trans-septal puncture through a dedicated device is costly and directly through a trans-septal needle may be less safe. Our technique overcomes these limitations. METHODS: The technique was used in patients when trans-septal needle penetration failed despite excessive force or tenting of the atrial septum...
September 20, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28940984/a-novel-guidewire-integrated-embolic-protection-filter-device-with-a-handy-folding-system-in-vitro-and-in-vivo-performance-assessment
#4
Hiroki Watanabe, Naritatsu Saito, Yoshimasa Nagata, Erika Yamamoto, Kenji Nakatsuma, Bao Bingyuan, Shin Watanabe, Junichi Tazaki, Takeshi Kimura, Kanji Inoue
OBJECTIVES: We developed a novel guidewire-integrated filter device with a handy-folding system (IFD: Inoue filter device). In vitro and in vivo studies were conducted to evaluate the feasibilityof the IFD. BACKGROUND: Although distal atheromatous and thrombotic embolizations remain unresolved critical issues during catheter interventions, distal protection devices are infrequently used partly because of reduced lower maneuverability. METHODS: In the in vitro experiment, we created an experimental circulation model composed of silicone latex tubes, a reservoir, and a roller pump...
September 20, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28939719/clinical-characteristics-and-management-of-coronary-artery-perforations-a-single-center-11-year-experience-and-practical-overview
#5
Miguel E Lemmert, Rutger J van Bommel, Roberto Diletti, Jeroen M Wilschut, Peter P de Jaegere, F Zijlstra, Joost Daemen, Nicolas M Van Mieghem
BACKGROUND: Coronary artery perforation (CAP) is a potentially lethal complication of percutaneous coronary intervention. We report on the incidence, clinical characteristics, and management of iatrogenic coronary perforations based on an 11-year single-center experience. METHODS AND RESULTS: From February 9, 2005, through November 20, 2016, 150 CAP cases were identified from our percutaneous coronary intervention database of 21 212 procedures (0.71%). Mean age of CAP patients was 66±11 years, and 62...
September 22, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28935755/leptin-induces-sca-1-progenitor-cell-migration-enhancing-neointimal-lesions-in-vessel-injury-mouse-models
#6
Yao Xie, Claire M F Potter, Alexandra Le Bras, Witold N Nowak, Wenduo Gu, Shirin Issa Bhaloo, Zhongyi Zhang, Yanhua Hu, Li Zhang, Qingbo Xu
OBJECTIVE: Leptin is an adipokine initially thought to be a metabolic factor. Recent publications have shown its roles in inflammation and vascular disease, to which Sca-1(+) vascular progenitor cells within the vessel wall may contribute. We sought to elucidate the effects of leptin on Sca-1(+) progenitor cells migration and neointimal formation and to understand the underlying mechanisms. APPROACH AND RESULTS: Sca-1(+) progenitor cells from the vessel wall of Lepr(+/+) and Lepr(-/)(-) mice were cultured and purified...
September 21, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28933523/the-use-of-3d-image-fusion-for-percutaneous-transluminal-angioplasty-and-stenting-of-iliac-artery-obstructions-validation-of-the-technique-and-systematic-review-of-literature
#7
Seline R Goudeketting, Stefan G Heinen, Daniel A VAN DEN Heuvel, Marco J VAN Strijen, Michiel W DE Haan, Cornelis H Slump, Jean-Paul DE Vries
BACKGROUND: The effect of the insertion of guidewires and catheters on fusion accuracy of the three-dimensional (3D) image fusion technique during iliac percutaneous transluminal angioplasty (PTA) procedures has not yet been investigated. METHODS: Technical validation of the 3D fusion technique was evaluated in 11 patients with common and/or external iliac artery lesions. A preprocedural contrast-enhanced magnetic resonance angiogram (CE-MRA) was segmented and manually registered to a cone-beam computed tomography image created at the beginning of the procedure for each patient...
September 20, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28928622/central-perforation-of-atretic-pulmonary-valve-using-coronary-microcatheter
#8
Saurabh Kumar Gupta, Rajnish Juneja, Anita Saxena
Percutaneous perforation of pulmonary valve, using 0.014" guidewires meant for coronary artery chronic total occlusion (CTO), is increasingly being performed for select cases of pulmonary atresia with intact ventricular septum (PA-IVS). Despite growing experience, procedural failures and complications are not uncommon. Even in infants treated successfully, the orifice created in the atretic pulmonary valve is eccentric. In this report, we present usefulness of coronary microcatheter in alignment of perforating coronary guidewire to the center of atretic pulmonary valve resulting in central perforation...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28928586/coiling-of-central-venous-catheter-a-rare-and-preventable-complication
#9
Nitin Hayaran, Nitin Goyal, Sudipta Joy, Aruna Jain
Central venous catheter (CVC) placement is not only restricted to Intensive Care Units and operation theaters but its horizon has also expanded to the bedside placements. Meticulous care and aids such as ultrasound and fluoroscopy dramatically increase the successful placement of needles, guidewires, and catheters, but still a large number of catheter misplacements can occur. The formation of a loop in CVC is a rare complication occurring mostly during right-sided catheterization. We report a rare complication of coiling of left subclavian CVC...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28924077/perforation-of-the-left-atrial-appendage-caused-by-inadvertent-deployment-of-a-soft-j-tipped-guidewire-during-radiofrequency-hot-balloon-ablation
#10
Hiro Yamasaki, Fumi Yamagami, Takeshi Machino, Kenji Kuroki, Yukio Sekiguchi, Kazutaka Aonuma, Akihiko Nogami
No abstract text is available yet for this article.
September 16, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28916891/a-prospective-randomized-study-of-loop-tip-versus-straight-tip-guidewire-in-wire-guided-biliary-cannulation
#11
Jae Chul Hwang, Byung Moo Yoo, Min Jae Yang, Yeon Kyung Lee, Ju Young Lee, Kihyun Lim, Choong-Kyun Noh, Hyo Jung Cho, Soon Sun Kim, Jin Hong Kim
BACKGROUND: Wire-guided cannulation has been widely accepted as a useful technique for achieving selective biliary access because it has significantly increased the success rate of biliary cannulation compared with conventional contrast-assisted cannulation. Unlike conventional guidewires with a straight tip, a loop-tip guidewire (LGW) has a closed distal loop that may facilitate less traumatic access through the epithelial folds of the intra-duodenal biliary segments. The aim of this study was to compare the performance of a LGW with a straight-tip guidewire (SGW) in achieving successful selective biliary cannulation...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916602/validation-study-of-image-based-fractional-flow-reserve-during-coronary-angiography
#12
Mariano Pellicano, Ifat Lavi, Bernard De Bruyne, Hana Vaknin-Assa, Abid Assali, Orna Valtzer, Yonit Lotringer, Giora Weisz, Yaron Almagor, Panagiotis Xaplanteris, Ajay J Kirtane, Pablo Codner, Martin B Leon, Ran Kornowski
BACKGROUND: Fractional flow reserve (FFR), an index of the hemodynamic severity of coronary stenoses, is derived from invasive measurements and requires a pressure-monitoring guidewire and hyperemic stimulus. Angiography-derived FFR measurements (FFRangio) may have several advantages. The aim of this study is to assess the diagnostic performance and interobserver reproducibility of FFRangio in patients with stable coronary artery disease. METHODS AND RESULTS: FFRangio is a computational method based on rapid flow analysis for the assessment of FFR...
September 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28913733/a-prospective-feasibility-trial-of-a-novel-intravascular-catheter-system-with-retractable-coiled-tip-guidewire-placed-in-difficult-intravascular-access-diva-patients-in-the-emergency-department
#13
Christopher Raio, Robert Elspermann, Natwalee Kittisarapong, Brendon Stankard, Tanya Bajaj, Veena Modayil, Mathew Nelson, Gerardo Chiricolo, Benjamin Wie, Alexandra Snock, Michael Mackay, Adam Ash
The primary study objective was to evaluate insertion success rates. Secondary objectives included patient satisfaction, procedure time, complication rates, completion of therapy and dwell time of the novel AccuCath(®) 2.25″ Blood Control (BC) Catheter System (FDA approved) placed in difficult-access patients. This was a single-arm feasibility trial evaluating the AccuCath(®) 2.25″ BC Catheter System in a convenience sample of DIVA patients defined as at least two failed initial attempts or a history of difficult access plus the inability to directly visualize or palpate a target vein...
September 14, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28905337/cholangioscopy-assisted-guidewire-placement-in-post-liver-transplant-anastomotic-biliary-stricture-efficient-and-potentially-also-cost-effective
#14
Fernanda P Martins, Angelo P Ferrari
No abstract text is available yet for this article.
September 13, 2017: Endoscopy
https://www.readbyqxmd.com/read/28899228/intraoperative-venoplasty-to-facilitate-placement-of-tunneled-catheters-for-hemodialysis
#15
Afsha Aurshina, Anil Hingorani, Natalie Marks, Enrico Ascher
Objective With the implementation of the K-DOQI guidelines, more patients are in need of long-term dialysis catheters until maturation of the arteriovenous fistula. However, on occasion, when placing a tunneled cuffed catheter for hemodialysis, we have encountered difficulty with passing the guidewire in spite of demonstration of a patent cervical portion of the internal jugular vein on duplex. Herein, we review our experience with intraoperative venoplasty for placement of Tesio™ catheters (Medcomp Harleysville, PA)...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28898571/risk-factors-of-post-ercp-pancreatitis-in-biliary-type-sphincter-of-oddi-dysfunction-in-japanese-patients
#16
Hiroyuki Miyatani, Satohiro Matsumoto, Hirosato Mashima
OBJECTIVES: Suspected sphincter of Oddi dysfunction (SOD) is a well-known risk factor for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). The indication of ERCP for suspected SOD patients was very low in Japan compared to other countries. Therefore, the risk of PEP may be different in Japanese SOD patients. The objective of this study was to evaluate the risk of PEP in suspected biliary type SOD in Japan. METHODS: From December 1996 to January 2017, 72 patients were suspected to have biliary type SOD by questionnaire, liver function tests, hepatobiliary scintigraphy, abdominal ultrasonography, upper gastrointestinal endoscopy, endoscopic ultrasonography, and magnetic resonance cholangiopancreatography...
September 12, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28882637/successful-retrograde-intubation-after-failed-fiberoptic-intubation-and-percutaneous-cricothyrotomy
#17
Stephanie Brenman, Sachin Gupta, Stephanie Tseeng
BACKGROUND: An obstructive neck lesion presents an airway challenge for any emergency physician. Retrograde intubation is an infrequently used airway alternative that can be employed in the difficult airway algorithm that requires little training and is less invasive than surgical cricothyrotomy. CASE REPORT: We report a case of a 31-year-old male patient who presented with respiratory distress progressing to respiratory failure from upper airway obstruction. The patient had significant tracheal thickening at the level of the thyroid gland based on a computed tomography report from 3 weeks prior to his presentation...
September 4, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28879604/experiments-for-the-development-of-a-steerable-microcatheter
#18
Yoshitaka Inaba, Yasuaki Arai, Miyuki Sone, Takeshi Aramaki, Keigo Osuga, Hayao Tanaka, Kenichi Kanemasa
PURPOSE: Sumitomo Bakelite has developed a steerable microcatheter with a mechanism on the handle for changing the direction of the catheter tip. Experiments were conducted in an animal model to evaluate the practicality of the catheter with the goal of introduction into clinical use. MATERIALS AND METHODS: The steerable microcatheter has the following specifications: external diameter 2.4F/2.9F (distal/proximal portion); internal diameter 0.021 inches; effective length 125 cm; and it is fitted with a dial on the proximal portion for moving the tip...
September 6, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28878102/coronary-intervention-complicated-by-pressure-wires-caught-within-stent-struts
#19
Ozan M Demir, Neil Ruparelia, Masood Khan, Christopher Baker
Coronary guidewire fracture or entrapment is a recognized complication of percutaneous coronary intervention that can result in abrupt vessel closure, thrombosis, or stent deformation. Developments in pressure-wire (PW) design have enabled their use for coronary intervention. We describe two cases where the pressure sensor became trapped against stent struts during PW removal.
September 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28872750/multi-centre-prospective-evaluation-of-the-seldinger-technique-for-difficult-male-urethral-catheter-insertions-by-non-urology-trained-doctors
#20
Yuigi Yuminaga, Jonathan Kam, Mark Louie-Johnsun
OBJECTIVE: To evaluate the safety and effectiveness of the Seldinger technique by non-urology trained (NUT) doctors for difficult male indwelling urinary catheter (IDC) insertions. PATIENTS AND METHODS: In all, 115 patients and 57 participating NUT doctors were recruited by the urologist or urology registrar, when contacted in regards to failed IDC insertion. The successful passage of an IDC by the NUT doctors using the Seldinger technique with a straight, hydrophilic guidewire was assessed in our prospective, multicentre evaluation...
September 5, 2017: BJU International
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