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coronary, bifurcation, Left main

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https://www.readbyqxmd.com/read/27887688/long-term-outcomes-after-stent-implantation-for-left-main-coronary-artery-from-the-multicenter-assessing-optimal-percutaneous-coronary-intervention-for-left-main-coronary-artery-stenting-registry
#1
Masanobu Ohya, Kazushige Kadota, Mamoru Toyofuku, Takeshi Morimoto, Hirooki Higami, Yasushi Fuku, Kyohei Yamaji, Hiromi Muranishi, Yuhei Yamaji, Koji Nishida, Daisuke Furukawa, Tomohisa Tada, Euihong Ko, Kenji Ando, Hiroki Sakamoto, Takashi Tamura, Kazuya Kawai, Takeshi Kimura
We assessed long-term outcomes after left main coronary artery (LMCA) stenting based on lesion types and stenting strategies. In the Assessing Optimal percutaneous coronary Intervention for Left Main Coronary Artery stenting registry, we evaluated 1,607 consecutive patients undergoing stent implantation for unprotected LMCA lesions (bifurcation lesions: n = 1318 and nonbifurcation lesions: n = 289). Among the bifurcation lesions, 1,281 lesions were treated with stenting across the bifurcation (bifurcation 1-stent strategy: n = 999 or bifurcation 2-stent strategy: n = 282)...
October 31, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27806900/optical-coherence-tomography-compared-with-intravascular-ultrasound-and-with-angiography-to-guide-coronary-stent-implantation-ilumien-iii-optimize-pci-a-randomised-controlled-trial
#2
Ziad A Ali, Akiko Maehara, Philippe Généreux, Richard A Shlofmitz, Franco Fabbiocchi, Tamim M Nazif, Giulio Guagliumi, Perwaiz M Meraj, Fernando Alfonso, Habib Samady, Takashi Akasaka, Eric B Carlson, Massoud A Leesar, Mitsuaki Matsumura, Melek Ozgu Ozan, Gary S Mintz, Ori Ben-Yehuda, Gregg W Stone
BACKGROUND: Percutaneous coronary intervention (PCI) is most commonly guided by angiography alone. Intravascular ultrasound (IVUS) guidance has been shown to reduce major adverse cardiovascular events (MACE) after PCI, principally by resulting in a larger postprocedure lumen than with angiographic guidance. Optical coherence tomography (OCT) provides higher resolution imaging than does IVUS, although findings from some studies suggest that it might lead to smaller luminal diameters after stent implantation...
November 26, 2016: Lancet
https://www.readbyqxmd.com/read/27777957/optimal-revascularization-strategy-on-medina-0-1-0-left-main-bifurcation-lesions-in-type-2-diabetes
#3
Xuwei Zheng, Hongyu Peng, Donghui Zhao, Qin Ma, Kun Fu, Guo Chen, Qian Fan, Jinghua Liu
Aim. Diabetes mellitus (DM) is a major risk factor for cardiovascular disease. The implications of a diagnosis of DM are as severe as the diagnosis of coronary artery disease. For many patients with complex coronary artery disease, optimal revascularization strategy selection and optimal medical therapy are equally important. In this study, we compared the hemodynamic results of different stenting techniques for Medina 0,1,0 left main bifurcation lesions. Methods. We use idealized left main bifurcation models and computational fluid dynamics analysis to evaluate hemodynamic parameters which are known to affect the risk of restenosis and thrombosis at stented bifurcation...
2016: Journal of Diabetes Research
https://www.readbyqxmd.com/read/27765302/impact-of-operator-experience-and%C3%A2-volume-on-outcomes-after-left%C3%A2-main%C3%A2-coronary-artery-percutaneous%C3%A2-coronary-intervention
#4
Bo Xu, Björn Redfors, Yuejin Yang, Shubin Qiao, Yongjian Wu, Jilin Chen, Haibo Liu, Jue Chen, Liang Xu, Yanyan Zhao, Changdong Guan, Runlin Gao, Philippe Généreux
OBJECTIVES: The aim of this study was to assess the impact of operator experience on prognosis after left main coronary artery (LM) percutaneous coronary intervention (PCI). BACKGROUND: LM PCI can be technically challenging and potentially risky considering the amount of supplied myocardium. METHODS: Consecutive patients who underwent unprotected LM PCI at a single institution were included and compared according to whether the primary operator was an experienced, high-volume LM operator (defined as an operator who performed at least 15 LM PCIs per year for at least 3 consecutive years) or not...
October 24, 2016: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27760636/-safety-and-efficacy-of-off-pump-coronary-artery-bypass-grafting-in-octogenarians
#5
T S Liu, B T Chen, R Dong, Y Li, Y Zhao, K Hua
Objective: To discuss the clinical safety and efficacy about off-pump coronary artery bypass grafting (OPCABG) in octogenarians. Methods: From June 2005 to July 2014, 252 patients (male 208, female 44, with a mean age of 81.7 years old) underwent OPCABG in Beijing Anzhen Hospital who were aged 80 years or older were enrolled. Results: Eight (3.2%) patients were diagnosed as single vessel coronary artery disease (CAD), 29 cases (11.5%) were diagnosed as bifurcation vessel CAD, and 215 cases (85.3%) were multivessel CAD...
September 27, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27757830/off-label-use-of-7fr-guideliner-in-the-bifurcation-coronary-intervention-protecting-2-side-branches
#6
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/27714730/anatomic-assessment-of-the-left-main-bifurcation-and-dynamic-bifurcation-angles-using-computed-tomography-angiography
#7
Osman Beton, Hatice Kaplanoglu, Baki Hekimoglu, Mehmet Birhan Yilmaz
BACKGROUND: An understanding of the left main coronary artery (LMCA) anatomy is important for accurate diagnosis and therapeutic. We aimed to investigate LMCA anatomy via 128-multisliced coronary computed-tomography-angiography (CCTA) in patients with normal LMCA. MATERIALS AND METHODS: A total of 201 CCTA studies were included in this study. Anatomical features of LMCA including cross-sectional areas of the LMCA ostial, LMCA distal, LAD ostial and LCX ostial, and degree of tapering and LMCA bifurcation angles (BA) in the form of LMCA-LCX BA, LMCA-LAD BA, LAD-LCX BA at end-diastole and end-systole...
October 7, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27713612/longitudinal-stent-deformation-caused-by-retraction-of-the-looped-main-branch-guidewire
#8
Hung-Hao Lee, Po-Chao Hsu, Wen-Hsien Lee, Chun-Yuan Chu, Ho-Ming Su, Tsung-Hsien Lin, Wen-Chol Voon, Wen-Ter Lai, Sheng-Hsiung Sheu, Cheng-An Chiu
A 66-year-old male was treated percutaneously for a bifurcation lesion of the left anterior descending coronary artery by provisional stenting using the jailed wire technique. After successfully stenting the main branch, retraction of the looped main branch guidewire was impossible. After using an intravascular ultrasound we discovered the guidewire was entangled with a stent strut. Thereafter, the proximal stent elongated after retraction. With the support of an over-the-wire microcatheter, we finally pulled out the entrapped guidewire...
September 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27685989/hemodynamics-in-coronary-arterial-tree-of-serial-stenoses
#9
Xi Chen, Yang Gao, Bin Lu, Xinwei Jia, Liang Zhong, Ghassan S Kassab, Wenchang Tan, Yunlong Huo
Serial segmental narrowing frequently occurs in humans, which alters coronary hemodynamics and further affects atherosclerotic progression and plaque formation. The objective of this study was to understand the distribution of hemodynamic parameters in the epicardial left main coronary arterial (LMCA) tree with serial stenoses reconstructed from patient computer tomography angiography (CTA) images. A finite volume method was used in conjunction with the inlet pressure wave and outlet flow resistance. The time-averaged wall shear stress (TAWSS) and oscillatory shear index (OSI) were determined from the flow field...
2016: PloS One
https://www.readbyqxmd.com/read/27667376/a-closer-look-at-fractional-flow-reserve-in-complex-anatomic-subsets-left-main-disease-bifurcation-lesions-and-saphenous-vein-grafts
#10
David C Lange, Morton J Kern
Fractional flow reserve (FFR) is a well-validated tool for determining the functional significance of a coronary artery stenosis, facilitating clinical decisions regarding the need for revascularization. FFR-guided revascularization improves clinical and economic outcomes. However, its application remains challenging in certain complex anatomic subsets, including left main coronary artery stenosis, bifurcation disease, and saphenous vein graft disease. This article reviews recent data supporting the use of FFR in these complex anatomic subsets...
2016: Reviews in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27651390/coronary-bypass-surgery-versus-stenting-in-multivessel-disease-involving-the-proximal-left-anterior-descending-coronary-artery
#11
Rafael Cavalcante, Yohei Sotomi, Yaping Zeng, Cheol Whan Lee, Jung-Min Ahn, Carlos Collet, Erhan Tenekecioglu, Pannipa Suwannasom, Yoshinobu Onuma, Seung-Jung Park, Patrick W Serruys
OBJECTIVE: In patients with multivessel disease and proximal left anterior descending artery (LAD) involvement, the best revascularisation strategy is still unclear. We assess outcomes after coronary artery bypass graft surgery (CABG) and percutaneous coronary intervention (PCI) with drug-eluting stents in a pooled analysis of individual patient-level data of the SYNTAX and BEST randomised trials. DESIGN: Proximal LAD involvement was defined by any lesion ≥ 50% diameter stenosis in the arterial segment starting from the left-main bifurcation up to (and including) the origin of the first major septal branch...
September 20, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27639736/a-computational-atlas-of-normal-coronary-artery-anatomy
#12
Pau Medrano-Gracia, John Ormiston, Mark Webster, Susann Beier, Alistair Young, Chris Ellis, Chunliang Wang, Örjan Smedby, Brett Cowan
AIMS: The aim of this study was to define the shape variations, including diameters and angles, of the major coronary artery bifurcations. METHODS AND RESULTS: Computed tomographic angiograms from 300 adults with a zero calcium score and no stenoses were segmented for centreline and luminal models. A computational atlas was constructed enabling automatic quantification of 3D angles, diameters and lengths of the coronary tree. The diameter (mean±SD) of the left main coronary was 3...
September 18, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27619478/bioresorbable-vascular-scaffolds-what-does-the-future-bring
#13
COMMENT
Jacek Bil, Robert J Gil
Bioresorbable vascular scaffolds (BVS) have emerged as an interesting alternative since the presence of the prosthesis in the coronary artery is transient. This technology enables to restore the normal vasomotor tone and allows positive remodeling, simultaneously reducing the trigger for persistent inflammation and facilitating further interventions by percutaneous or surgical means. Absorb BVS(®) is the first generation everolimus-eluting poly-L-lactide (PLLA) bioresorbable scaffold. In recent meta-analyses Absorb BVS(®) was definitely proved to be safe and effective device in the treatment of symptomatic coronary artery disease...
August 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27592016/major-predictors-of-long-term-clinical-outcomes-after-percutaneous-coronary-intervention-for-coronary-bifurcation-lesions-with-2-stent-strategy-patient-level-analysis-of-the-korean-bifurcation-pooled%C3%A2-cohorts
#14
Pil Sang Song, Young Bin Song, Joo Myung Lee, Joo-Yong Hahn, Seung-Hyuk Choi, Jin-Ho Choi, Sang Hoon Lee, Kyung Woo Park, Hyo-Soo Kim, Yangsoo Jang, Ki Bae Seung, Ju Hyeon Oh, Hyeon-Cheol Gwon
OBJECTIVES: This study investigated the long-term outcomes and predictors of target vessel failure (a composite of cardiac death, myocardial infarction, stent thrombosis, or target vessel revascularization) in patients with bifurcation lesion treated by percutaneous coronary intervention (PCI) utilizing the 2-stent strategy with a drug-eluting stent (DES). BACKGROUND: There are limited data on outcomes of the 2-stent strategy in bifurcation PCI. METHODS: Patient-level pooled analysis was performed with patients undergoing PCI with 2-stent strategy from the Korean Bifurcation Pooled Cohorts...
September 26, 2016: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27567021/first-prospective-multicenter-experience-with-the-7-french-glidesheath-slender-for-complex-transradial-coronary-interventions
#15
Adel Aminian, Juan F Iglesias, Carlos Van Mieghem, Andrea Zuffi, Angela Ferrara, Roukos Manih, Dariouch Dolatabadi, Jacques Lalmand, Shigeru Saito
PURPOSE: To assess the feasibility and safety of the 7 French (Fr) Glidesheath Slender for complex transradial (TR) percutaneous coronary interventions (PCI). BACKGROUND: The TR approach is increasingly used worldwide for coronary and peripheral vascular interventions. However, the small size of the radial artery remains an important limitation for the use of large-bore guiding catheters (>6 Fr), restricting thereby the treatment of highly complex lesions through the TR approach...
August 27, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27518220/plaque-composition-and-morphologic-characteristics-in-significant-left-main-bifurcation-disease-virtual-histology-intravascular-ultrasound-study
#16
Mineok Chang, Soo-Jin Kang, Sung-Han Yoon, Jung-Min Ahn, Duk-Woo Park, Seung-Whan Lee, Young-Hak Kim, Cheol Whan Lee, Seong-Wook Park, Gaku Nakazawa, Gary S Mintz, Seung-Jung Park
OBJECTIVES: Although the left main coronary artery (LMCA) is clinically the most important site, little is known about the longitudinal plaque distribution and composition in the significant LMCA disease. METHODS: Preprocedure virtual histology intravascular ultrasound data were analyzed in 120 patients with significant LMCA bifurcation lesions (angiographic diameter stenosis>50%) requiring revascularization. Plaque burden and percentage of necrotic core (%NC) at the minimal lumen area site and maximal %NC site were measured in four segments: proximal LMCA, distal LMCA, left anterior descending (LAD) ostium, and proximal LAD...
August 11, 2016: Coronary Artery Disease
https://www.readbyqxmd.com/read/27495804/coronary-fractional-flow-reserve-measurements-of-a-stenosed-side-branch-a-computational-study-investigating-the-influence-of-the-bifurcation-angle
#17
Claudio Chiastra, Francesco Iannaccone, Maik J Grundeken, Frank J H Gijsen, Patrick Segers, Matthieu De Beule, Patrick W Serruys, Joanna J Wykrzykowska, Antonius F W van der Steen, Jolanda J Wentzel
BACKGROUND: Coronary hemodynamics and physiology specific for bifurcation lesions was not well understood. To investigate the influence of the bifurcation angle on the intracoronary hemodynamics of side branch (SB) lesions computational fluid dynamics simulations were performed. METHODS: A parametric model representing a left anterior descending-first diagonal coronary bifurcation lesion was created according to the literature. Diameters obeyed fractal branching laws...
2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/27431924/three-year-follow-up-of-a-vein-patch-repair-for-a-coronary-artery-saccular-aneurysm-of-the-left-main-bifurcation
#18
Yasuhiro Kawase, Yosuke Ishii, Takahide Yoshio, Dai Nishina, Ryuzo Bessho, Takashi Nitta
This report describes a case of surgical treatment for a coronary artery saccular aneurysm of the left main bifurcation. A coronary artery saccular aneurysm (7 mm × 10 mm) and three vessel disease, including the left main trunk, were diagnosed by coronary angiography. A surgical resection and saphenous vein patch repair of the left main coronary artery aneurysm was performed concomitantly with coronary artery bypass grafting. The pathological findings of the aneurysm clarified that the aneurysm wall was atrophic and extremely thin because of a collapsed trilaminar arterial structure due to atherosclerosis...
July 14, 2016: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27404711/unprotected-left-main-intervention-for-surgery-ineligible-patients-with-coronary-artery-disease-usefulness-of-micro-ct-images-for-stent
#19
Daisuke Sueta, Yuichiro Arima, Seiji Hokimoto, Toshifumi Mukunoki, Noriaki Tabata, Tomonori Akasaka, Takahiro Sato, Jun Otani, Hisao Ogawa
BACKGROUND: Percutaneous coronary intervention (PCI) for unprotected left main truncus (LMT) lesions is controversial. Inoperable status with advanced age, renal dysfunction, frailty, or patient request may require an unprotected left main PCI. PCI for LMT is not recommended in the typical clinical situation; however, when it is the only feasible option, the performance is not bad. We demonstrated the result of a cobalt-chromium everolimus-eluting stent (CoCr-EES) in the LMT stenting and serial changes via micro-computed tomography (μCT)...
October 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27388830/sequential-proximal-optimizing-technique%C3%A2-in-provisional-bifurcation-stenting-with-everolimus-eluting-bioresorbable-vascular-scaffold-fractal-coronary-bifurcation-bench-for-comparative-test%C3%A2-between-absorb-and-xience-xpedition
#20
François Derimay, Géraud Souteyrand, Pascal Motreff, Patrice Guerin, Paul Pilet, Jacques Ohayon, Olivier Darremont, Gilles Rioufol, Gérard Finet
OBJECTIVES: The aim of this fractal bifurcation bench study was to compare provisional bifurcation stenting with a "re-POT" sequence, comprising a proximal optimizing technique (POT), side branch inflation, and final POT, between a bioresorbable vascular scaffold (BVS) and a metallic stent. BACKGROUND: Re-POT proved significantly better than kissing balloon inflation in maintaining circular geometry without overstretch in metal stents, while significantly reducing side branch ostium strut obstruction and global strut malapposition...
July 11, 2016: JACC. Cardiovascular Interventions
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