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https://www.readbyqxmd.com/read/29131806/impact-of-guidewire-recrossing-point-into-stent-jailed-side-branch-for-optimal-kissing-balloon-dilatation-corelab-3d-optical-coherence-tomography-analysis
#1
Takayuki Okamura, Ryoji Nagoshi, Tatsuhiro Fujimura, Yoshinobu Murasato, Masahiro Yamawaki, Shiro Ono, Takeshi Serikawa, Yutaka Hikichi, Hiroaki Norita, Fumiaki Nakao, Tomohiro Sakamoto, Toshiro Shinke, Junya Shite
AIMS: We investigated the influence of the guidewire recrossing point on the incidence of incomplete stent apposition (ISA) after kissing balloon dilatation (KBD), and clinical and angiographic outcome at 9 months in a prospective multicenter registry. METHODS AND RESULTS: One hundred five patients underwent single crossover stenting across the side branch (SB) and subsequent KBD. Jailing configuration of the SB orifice and the guidewire recrossing position were assessed by off-line 3D-OCT in the corelab...
November 14, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29122572/characterization-of-vessel-deformations-during-evar-a-preliminary-retrospective-analysis-to-improve-fidelity-of-endovascular-simulators
#2
Laura Cercenelli, Barbara Bortolani, Guido Tiberi, Chiara Mascoli, Ivan Corazza, Mauro Gargiulo, Emanuela Marcelli
OBJECTIVE: During endovascular aneurysm repair (EVAR), vessel deformations occur due to the insertion of tools and deployment of stent grafts in the arteries. We present a method for the characterization of vessel deformations during EVAR, and its application on patient datasets for a preliminary retrospective analysis that may be used to improve fidelity of endovascular simulators. DESIGN: The method provides the extraction of vessel profiles from intraoperative fluoroscopic images and the calculation of a tortuosity index in the 2D fluoroscopy view (τ2D) used to quantify the vessel deformations (δ%) during EVAR caused by the stiff guidewire insertion (δ%Stiff) and the stent graft deployment (δ%Graft), when compared with the undeformed vessel configuration (no device inserted)...
November 6, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/29113866/intravascular-ultrasound-enhances-the-safety-of-rotational-atherectomy
#3
REVIEW
Kenichi Sakakura, Kei Yamamoto, Yousuke Taniguchi, Yoshimasa Tsurumaki, Shin-Ichi Momomura, Hideo Fujita
Intravascular ultrasound (IVUS) is mainly used in PCI to treat complex lesions, such as left main bifurcation, chronic total occlusion and calcified lesions. Although IVUS yields useful information such as the presence of napkin-ring calcification, the role of IVUS in rotational atherectomy (RA) is not fully appreciated. Recently, since the deliverability and crossability of IVUS catheters have improved, IVUS should be attempted before RA. Even if the IVUS catheter cannot cross the lesion, IVUS provides information just proximal to the target lesion, which would be useful in the selection of the appropriate guidewire and burr size...
September 23, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29113865/identifying-strategy-for-ad-hoc-percutaneous-coronary-intervention-in-patients-with-anticipated-unfavorable-radial-access-the-little-women-study
#4
Gregory A Sgueglia, Daniel Todaro, Antonella De Santis, Micaela Conte, Gaetano Gioffrè, Angela Di Giorgio, Fabrizio D'Errico, Fabiana Piccioni, Francesco Summaria, Achille Gaspardone
BACKGROUND: Transradial percutaneous coronary intervention (PCI) offers important advantages over transfemoral PCI, including better outcomes. However, when there is indication to ad hoc PCI, a 6 French workflow is a common default strategy, hence potentially influencing vascular access selection in patients with anticipated small size radial artery. METHODS: A multidimensional evaluation was performed to compare two ad hoc interventional strategies in women <160cm: a full 6 French workflow (namely 6 French introducer sheath, diagnostic catheters and guiding catheter) with a modified workflow consisting in the use of 5 French diagnostic catheters preceded by the placement of a 6 French sheath introducer and followed by a 6 French guiding catheter use for PCI...
October 16, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29112583/improving-quality-of-chest-radiographs-after-placement-of-peripherally-inserted-central-catheters
#5
Jill Jones, Lucas Meek, Shaun Best, Amy McCann, Brandon Welsh, Jacqueline Hill, Ryan Ash
The goal of this study was to determine the best method for localizing peripherally inserted central catheters (PICCs) in postplacement portable chest radiographs. A retrospective analysis showed no significant difference in visualization of the PICC tip between different chest radiograph projections. Modifications were made to an institutional PICC protocol to obtain anteroposterior chest views with the guidewire present only. Repeat analysis demonstrated statistically significant increases in the frequency of anteroposterior radiographs performed, the number of chest radiographs with guidewire, and the localization of the catheter...
November 2017: Journal of Infusion Nursing: the Official Publication of the Infusion Nurses Society
https://www.readbyqxmd.com/read/29107431/office-stent-placement-under-local-anesthesia-is-a-safe-and-efficient-procedure-for-the-management-of-multiple-ureteral-disorders
#6
A Carrion, M D'Anna, M Costa-Grau, P Luque, E García-Cruz, A Franco, A Alcaraz
OBJECTIVE: To assess the outcomes of ureteral stent placement under local anesthesia for the management of multiple ureteral disorders. METHODS: Retrospective study of 45 consecutive ureteral stents placed under local anesthesia from January 2015 to July 2016. Inclusion criteria were hemodynamically stable patients with urinary obstruction, urinary fistula or for prophylactic ureteral localization during surgery. Five minutes before the procedure, 10ml of lidocaine gel and 50ml of lidocaine solution were instilled in the bladder...
October 26, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/29101757/supine-ultrasound-guided-percutaneous-nephrolithotomy-with-retrograde-semi-rigid-ureteroscopic-guidwire-retrieval-description-of-an-evolved-technique
#7
Mahziar Khazaali, Dinyar Khazaeli, Hayat Moombeini, Jamal Jafari-Samim
PURPOSE: Ultrasound-guided PCNL in Galdakao-modified supine Valdivia (GMSV) position has taken into consideration during the last decade; however, guidewire slippage during tract dilatation is still a big concern in this approach. Here we presented our results of combination of this modification with ureteroscopic guidewire retrieval to ensure a safe and confident renal access. MATERIALS AND METHODS: From June 2015 to March 2016, 30 consecutive patients with renal stone of ? 2...
November 4, 2017: Urology Journal
https://www.readbyqxmd.com/read/29098379/influence-of-hydrostatic-pressure-on-intracoronary-indices-of-stenosis-severity-in-vivo
#8
Tobias Härle, Mareike Luz, Sven Meyer, Felix Vahldiek, Pim van der Harst, Randy van Dijk, Daan Ties, Javier Escaned, Justin Davies, Albrecht Elsässer
BACKGROUND: An influence of hydrostatic pressure on intracoronary indices of stenosis severity in vitro was recently reported. We sought to analyze the influence of hydrostatic pressure, caused by the height difference between the distal and proximal pressure sensor after guidewire positioning in the interrogated vessel, on intracoronary pressure measurements in vivo. METHODS AND RESULTS: In 30 coronary stenoses, intracoronary pressure measurements were performed in supine, left, and right lateral patient position...
November 2, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29093587/-efficacy-and-complications-of-double-guidewire-technique-in-biliary-tract-cannulation
#9
Edson Guzmán-Calderón, Augusto Vera, Ramiro Díaz, Edgar Alva, Ronald Arcana
OBJECTIVE: To determine the efficacy and safety of double guidewire technique in patients with difficult biliary cannulation during ERCP. MATERIALS AND METHODS: We conducted a retrospective cohort study of all ERCPs performed between January 2015 and July 2016. DGT was performed in patients for whom biliary cannulation was difficult and guidewire insertion into the pancreatic duct (PD) was inadvertently achieved while attempting the standard WGC technique. RESULTS: 24 patients were enrolled with ERCP and DGT; 17 were female (70...
July 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29089521/percutaneous-ureteroscopy-laser-unroofing-a-minimally-invasive-approach-for-renal-cyst-treatment
#10
Jia Hu, Najib Isse Dirie, Jun Yang, Ding Xia, Yuchao Lu, Xiao Yu, Shaogang Wang
Most simple renal cysts rarely require therapy. When it grows to such a large size, regardless of the presence of symptomatology, surgical intervention is required. In this study, we explored a new approach called percutaneous ureteroscopy laser unroofing for treatment renal cysts and evaluated its safety and efficacy. 71 simple renal cyst patients with surgical indications were enrolled, including 6 patients with a peripelvic cyst and 5 patients coexisting ipsilateral calculi. Under ultrasound guidance, an eighteen-gauge needle was placed inside the cyst cavity, and a guidewire was introduced followed by sequential dilation up to 28 F...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29079992/vcsim3-a-vr-simulator-for-cardiovascular-interventions
#11
Przemyslaw Korzeniowski, Ruth J White, Fernando Bello
PURPOSE: Effective and safe performance of cardiovascular interventions requires excellent catheter/guidewire manipulation skills. These skills are currently mainly gained through an apprenticeship on real patients, which may not be safe or cost-effective. Computer simulation offers an alternative for core skills training. However, replicating the physical behaviour of real instruments navigated through blood vessels is a challenging task. METHODS: We have developed VCSim3-a virtual reality simulator for cardiovascular interventions...
October 27, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29076748/radioactive-seed-localization-compared-with-wire-guided-localization-of-non-palpable-breast-carcinoma-in-breast-conservation-surgery-the-first-experience-in-the-united-kingdom
#12
Robert Milligan, Andrew Pieri, Adam Critchley, Richard Peace, Tom Lennard, J M O'Donoghue, Rachel Howitt, Stewart Nicholson, Henry Cain, George Petrides, Nidhi Sibal
OBJECTIVE: In the UK, guidewires have traditionally been used for localization of non-palpable breast lesions in patients undergoing breast conservation surgery (BCS). Radioactive seed localization (RSL) using Iodine-125 seeds is an alternative localization method and involves inserting a titanium capsule, containing radioactive Iodine-125, into the breast lesion. We aim to demonstrate feasibility of RSL compared with guidewire-localization (GWL) for BCS in the UK. METHODS: Data were collected on 100 patients with non-palpable unifocal invasive carcinoma of the breast undergoing GWL WLE prior to the introduction of RSL and the first 100 patients treated with RSL WLE...
November 16, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29069325/serial-changes-in-the-side-branch-ostial-area-after-main-vessel-stenting-with-kissing-balloon-inflation-for-coronary-bifurcation-lesions-assessed-by-3d-optical-coherence-tomography
#13
Tatsuhiro Fujimura, Takayuki Okamura, Hiroki Tateishi, Takeshi Nakamura, Jutaro Yamada, Tetsuro Oda, Mamoru Mochizuki, Shigehiko Nishimura, Takashi Nishimura, Masafumi Yano
Aims: We evaluated the influence of the jailing configuration and guidewire rewiring position in front of the side-branch (SB) ostium before kissing balloon inflation (KBI) against side-branch ostial area (SBOA) at follow-up using 3D optical coherence tomography (3D-OCT). Methods and results: We retrospectively analysed the cases of the 37 consecutive patients who underwent main-vessel (MV) stenting with KBI for coronary bifurcation lesion under OCT guidance and the follow-up OCT 6-12 months...
October 23, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29069202/association-of-inflammation-and-endothelial-dysfunction-with-coronary-microvascular-resistance-in-patients-with-cardiac-syndrome-x
#14
Ming Long, Zhibin Huang, Xiaodong Zhuang, Zena Huang, Yue Guo, Xinxue Liao, Chufan Luo
BACKGROUND: Although a proportion of CSX patients have impaired brachial artery flow-mediated dilatation (FMD) in response to hyperemia, suggesting that endothelial dysfunction in these patients may be systemic and not just confined to the coronary circulation; the underlying mechanisms triggering endothelial dysfunction in these patients are still incompletely understood. OBJECTIVES: To assess the association of the index of Microcirculatory Resistance (IMR) with endothelial dysfunction and inflammation in patients with CSX...
October 19, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29068132/ostial-right-coronary-chronic-total-occlusion-transesophageal-echocardiographic-guidance-for-retrograde-aortic-re-entry
#15
Frank E Corrigan, Dimitrios Karmpaliotis, Habib Samady, Stamatios Lerakis
As antegrade options are limited, intervention upon the ostial right coronary artery (RCA) chronic total occlusion (CTO) warrants a retrograde approach. Landmarks for an aggressive approach are concerning as passage of stiff guidewires or electrocautery near the RCA ostium may result in wire passage into structures other than the aorta. We report the first use of transesophageal echocardiography (TEE) to assist retrograde passage of a guidewire into the aorta. For the ostial RCA CTO, TEE guidance may be considered to assist retrograde passage of aggressive guidewires into the aorta...
October 25, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29060622/pilot-study-on-vascular-intervention-training-based-on-blood-flow-effected-guidewire-simulation
#16
Jiayin Cai, Hongzhi Xie, Shuyang Zhang, Lixu Gu
A decent guidewire behavior simulation is vital to the virtual vascular intervention training. The influence of blood flow has rarely been taken into consideration in former works of guidewire simulation. This paper addresses the problem by integrating blood flow analysis and proposes a novel guidewire simulation model.The blood flow distribution inside arterial vasculature is computed by separating the vascular model into discrete cylindrical vessels and modeling the flow in each vessel with the Poiseuille Law...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29057445/intravascular-uplift-of-an-occlusive-spiral-dissection-using-a-hi-torque-pilot-150-guidewire-for-successful-entry-of-the-true-right-coronary-artery-lumen
#17
Mariusz A Dębski, Łukasz Kalińczuk, Artur Dębski, Dariusz Karwowski, Marcin Demkow
No abstract text is available yet for this article.
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/29055764/outcomes-of-percutaneous-coronary-interventions-for-chronic-total-occlusion-performed-by-highly-experienced-japanese-specialists-the-first-report-from-the-japanese-cto-pci-expert%C3%A2-registry
#18
Yoriyasu Suzuki, Etsuo Tsuchikane, Osamu Katoh, Toshiya Muramatsu, Makoto Muto, Kocihi Kishi, Yuji Hamazaki, Yuji Oikawa, Tomohiro Kawasaki, Atsunori Okamura
OBJECTIVES: This report describes the registry and presents an initial analysis of outcomes for the different PCI approaches taken by the specialists. BACKGROUND: Strategies for percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) are complex. The Japanese Board of CTO Interventional Specialists has developed a prospective, nonrandomized registry of patients undergoing CTO-PCIs performed by 41 highly experienced Japanese specialists. METHODS: Over the study period of January 2014 to December 2015, the registry included 2,846 consecutive CTO-PCI cases undertaken in Japan...
October 11, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29055054/a-multicenter-prospective-evaluation-study-of-endoscopic-ultrasound-guided-hepaticogastrostomy-combined-with-antegrade-stenting-with-video
#19
Takeshi Ogura, Masayuki Kitano, Mamoru Takenaka, Atsushi Okuda, Kosuke Minaga, Kentaro Yamao, Yukitaka Yamashita, Keiichi Hatamaru, Chishio Noguchi, Yasuhiko Gotoh, Taira Kuroda, Tomoyuki Yokota, Hidefumi Nishikiori, Ryota Sagami, Kazuhide Higuchi, Yasutaka Chiba
OBJECTIVE: EUS-guided hepaticogastrostomy (EUS-HGS) is often indicated for advanced stage patients because it prevents the adverse events associated with EUS-HGS procedures, and provides long stent patency. EUS-guided antegrade stenting (AS) has been developed as an advanced technique. Thus, to prevent adverse events and achieve, long stent patency, EUS-AS combined with EUS-HGS (EUS-HGAS) has been reported. The aim of this study was to evaluate the technical feasibility and efficacy of EUS-HGAS in a multicenter, prospective study...
October 20, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29051976/late-gadolinium-enhancement-on-cardiac-magnetic-resonance-imaging-is-associated-with-coronary-endothelial-dysfunction-in-patients-with-dilated-cardiomyopathy
#20
Mina Nakayama, Megumi Yamamuro, Seiji Takashio, Tomoaki Uemura, Naoki Nakayama, Kyoko Hirakawa, Seitaro Oda, Daisuke Utsunomiya, Koichi Kaikita, Seiji Hokimoto, Yasuyuki Yamashita, Yukiko Morita, Kazuo Kimura, Kouichi Tamura, Kenichi Tsujita
Myocardial fibrosis and coronary endothelial dysfunction are important determinants of outcome in patients with heart failure. However, the relationship of these factors in patients with dilated cardiomyopathy (DCM) is not fully understood. This study aimed to investigate the relationship between endothelium-dependent coronary vasomotor abnormality and late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR) in patients with DCM. We examined 38 consecutive patients with DCM. All patients underwent CMR and the acetylcholine (ACh) provocation test using cardiac catheterization...
October 19, 2017: Heart and Vessels
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