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https://www.readbyqxmd.com/read/28105600/approach-to-cto-intervention-overview-of-techniques
#1
REVIEW
Aris Karatasakis, Barbara Anna Danek, Dimitri Karmpaliotis, Khaldoon Alaswad, Minh Vo, Mauro Carlino, Mitul P Patel, Stéphane Rinfret, Emmanouil S Brilakis
Successful percutaneous coronary intervention (PCI) of chronic total occlusions (CTOs) has been associated with significant clinical benefits, but remains technically demanding. Failure to cross the CTO with a guidewire is the most common cause of CTO PCI failure. CTO crossing can be achieved in the antegrade or retrograde direction and can be accomplished by maintaining true lumen position throughout or via subintimal dissection/reentry techniques. A procedural plan should be created prior to the procedure through careful angiographic review of four key parameters: (a) morphology of the proximal occlusion cap; (b) length of the occlusion; (c) quality of the distal vessel and presence of bifurcation at the distal cap; and (d) suitability of collateral circulation for retrograde crossing...
January 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28100880/significant-association-of-serum-adiponectin-and-creatine-kinase-mb-levels-in-st-segment-elevation-myocardial-infarction
#2
Tomoaki Natsukawa, Norikazu Maeda, Shiro Fukuda, Masaya Yamaoka, Yuya Fujishima, Hirofumi Nagao, Fumi Sato, Hitoshi Nishizawa, Hirotaka Sawano, Yasuyuki Hayashi, Tohru Funahashi, Tatsuro Kai, Iichiro Shimomura
AIMS: Adiponectin, an adipocyte-specific secretory protein, abundantly exists in the blood stream while its concentration paradoxically decreases in obesity. Hypoadiponectinemia is one of risks of cardiovascular diseases. However, impact of serum adiponectin concentration on acute ischemic myocardial damages has not been fully clarified. The present study investigated the association of serum adiponectin and creatine kinase (CK)-MB levels in subjects with ST-segment elevation myocardial infarction (STEMI)...
January 17, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28099589/which-coronary-lesions-are-more-prone-to-cause-acute-myocardial-infarction
#3
Taner Sen, Mehmet Ali Astarcioglu, Osman Beton, Lale Dinc Asarcikli, Celal Kilit
Background: According to common belief, most myocardial infarctions (MIs) are due to the rupture of nonsevere, vulnerable plaques with < 70% obstruction. Data from recent trials challenge this belief, suggesting that the risk of coronary occlusion is, in fact, much higher after severe stenosis. The aim of this study was to investigate whether or not acute ST-elevation MIs result from high-grade stenoses by evaluating the presence of coronary collateral circulation (CCC). Methods: We retrospectively included 207 consecutive patients who had undergone primary percutaneous coronary intervention for acute ST-elevation MI...
January 16, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28092292/epicardial-collaterals-spasm-as-a-cause-of-st-elevation-myocardial-infarction
#4
Vincenzo Vetrugno, Francesco Fracassi, Osama Shoeib, Domenico D'Amario, Giampaolo Niccoli, Filippo Crea
ST elevation myocardial infarction in a 61-year-old man with a history of previous coronary artery bypass grafts. Spasm of collaterals to the circumflex coronary artery was the cause of acute presentation and was successfully treated by intracoronary nitrates. Chronic therapy with calcium channel blockers was added in the discharge medications chart.
January 13, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28091872/impact-of-revascularization-of-coronary-chronic-total-occlusion-on-left-ventricular-function-and-electrical-stability-analysis-by-speckle-tracking-echocardiography-and-signal-averaged-electrocardiogram
#5
Yohei Sotomi, Atsunori Okamura, Katsuomi Iwakura, Motoo Date, Hiroyuki Nagai, Tomohiro Yamasaki, Yasushi Koyama, Koichi Inoue, Yasushi Sakata, Kenshi Fujii
The present study aimed to assess the mechanisms of effects of percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) from two different aspects: left ventricular (LV) systolic function assessed by two-dimensional speckle tracking echocardiography (2D-STE) and electrical stability evaluated by late potential on signal-averaged electrocardiogram (SAECG). We conducted a prospective observational study with consecutive CTO-PCI patients. 2D-STE and SAECG were performed before PCI, and after 1-day and 3-months of procedure...
January 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28087518/cardiovascular-function-in-male-and-female-jcr-la-cp-rats-effect-of-high-fat-high-sucrose-diet
#6
Ian Hunter, Amanda Soler, Gregory Joseph, Brenda Hutcheson, Chastity Bradford, Frank Zhang, Barry J Potter, Spencer D Proctor, Petra Rocic
30% of the world population is diagnosed with metabolic syndrome. High fat/high sucrose diet (HF/HS, Western diet) correlates with metabolic syndrome prevalence. We characterized effects of the HF/HS diet on vascular (arterial stiffness, vasoreactivity, coronary collateral development) and cardiac (echocardiography) function, oxidative stress and inflammation in a rat model of metabolic syndrome (JCR). Furthermore, we determined whether male vs. female animals were affected differentially by the Western diet...
January 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28040288/collateral-filling-efficiency-of-comorbid-chronic-total-occlusion-segment-on-short-term-mortality-in-st-elevation-myocardial-infarction
#7
Toshiharu Fujii, Masataka Nakano, Yohei Ohno, Gaku Nakazawa, Norihiko Shinozaki, Takashi Matsukage, Fuminobu Yoshimachi, Yuji Ikari
BACKGROUND: Collateral filling of chronic total occlusion (CTO) segments is considered to affect hemodynamic stability in primary percutaneous coronary intervention (PCI) for ST-elevation myocardial infarction (STEMI) with CTO, however its value as a prognostic indicator for mortality is uncertain. The present study examined the relationship between collateral filling of CTO segments and short-term mortality in patients with STEMI with a comorbid CTO lesion. METHODS: Among 829 STEMI patients who underwent primary PCI, 74 patients with CTO were identified...
December 21, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28038815/circadian-variation-in-acute-myocardial-infarct-size-assessed-by-cardiovascular-magnetic-resonance-in-reperfused-stemi-patients
#8
Heerajnarain Bulluck, Jennifer Nicholas, Gabriele Crimi, Steven K White, Andrew J Ludman, Silvia Pica, Claudia Raineri, Hector A Cabrera-Fuentes, Derek Yellon, Jose Rodriguez-Palomares, David Garcia-Dorado, Derek J Hausenloy
OBJECTIVE: Clinical studies using serum cardiac biomarkers to investigate a circadian variation in acute myocardial infarct (MI) size in ST-segment elevation myocardial infarction (STEMI) patients reperfused by primary percutaneous coronary intervention (PPCI) have produced mixed results. We aimed to investigate this phenomenon using acute MI size measured by cardiovascular magnetic resonance (CMR). METHODS: Patient-level data was obtained from 4 randomized controlled trials investigating the MI-limiting effects of cardioprotective therapies in this pooled analysis...
December 19, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28031682/diagnosing-left-coronary-ostial-atresia-sometimes-the-old-ways-are-best
#9
Steven Karayiannis, Brian Anthony McCrossan, Andrew Sands
A 12-year-old boy with intermittent syncope associated with exercise. Exercise stress testing suggested myocardial ischemia and 2D echocardiography failed to confirm antegrade flow in the left main stem. Advanced imaging techniques including cardiac-gated computed tomography angiography and stress cardiac magnetic resonance imaging were falsely reassuring. Cardiac catheterization demonstrated left coronary artery ostial atresia with a good caliber left coronary system supplied by generous collaterals from the right coronary artery...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28017302/cardiodynamicsgram-as-a-new-diagnostic-tool-in-coronary-artery-disease-patients-with-nondiagnostic-electrocardiograms
#10
Muqing Deng, Min Tang, Cong Wang, Liang Shan, Linfeng Zhang, Jingtao Zhang, Weiming Wu, Ling Xia
Cardiodynamicsgram (CDG) has emerged recently as a noninvasive spatiotemporal electrocardiographic method for subtle cardiac dynamics information analysis within electrocardiogram (ECG). This study sought to evaluate the clinical utility of CDG for early coronary artery disease (CAD) detection in suspected patients with CAD presenting with nondiagnostic ECGs. A total of 421 suspected patients with CAD presenting with nondiagnostic ECG were enrolled. Standard 12-lead ECG and CDG were performed simultaneously, 1 day before invasive coronary angiography...
December 2, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28011587/elevated-20-hete-impairs-coronary-collateral-growth-in-metabolic-syndrome-via-endothelial-dysfunction
#11
Gregory Joseph, Amanda Soler, Rebecca Hutcheson, Ian Hunter, Chastity Bradford, Brenda Hutcheson, Katherine H Gotlinger, Houli Jiang, John R Falck, Spencer Proctor, Michal Laniado Schwartzman, Petra Rocic
Coronary collateral growth (CCG) is impaired in metabolic syndrome (MetS). microRNA-145 (miR-145-Adv) delivery to our rat model of metabolic syndrome (JCR) completely restored and neutrophil depletion significantly improved CCG. We determined whether low endogenous levels of miR-145 in MetS allowed for elevated production of 20-hydroxyeicosatetraenoic acid (20-HETE), which in turn, resulted in excessive neutrophil accumulation and endothelial dysfunction leading to impaired CCG. Rats underwent 0-9 days of repetitive ischemia (RI)...
December 23, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28004266/long-term-major-adverse-cardiac-and-cerebrovascular-events-macce-rate-comparison-of-retrograde-and-antegrade-recanalization-of-chronic-total-coronary-occlusions
#12
Klaudija Bijuklic, Carsten Schwencke, Joachim Schofer
BACKGROUND: The recanalization success rate of chronic total occlusion (CTO) percutaneous coronary interventions (PCI) can be increased by the retrograde approach; however, the long-term outcome of patients undergoing retrograde procedures is unknown. AIM: We aimed to evaluate the long-term major adverse cardiac and cerebrovascular event (MACCE) rate (e.g. death, myocardial infarction, coronary artery bypass surgery and stroke) in patients after retrograde versus antegrade CTO-PCI...
December 21, 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27993753/reactive-myocardial-hyperemia-for-functional-assessment-of-coronary-stenosis-severity
#13
Michael Stoller, Christian Seiler
AIM: To compare functional assessment of coronary stenosis severity by fractional flow reserve (FFR) measurement as induced by systemic adenosine and by regional reactive myocardial hyperemia. METHODS AND RESULTS: The primary study endpoints were coronary pressure-derived FFR values in response to intravenous adenosine infusion (140µg/min/kg) and to a 1-minute proximal coronary artery balloon occlusion (reactive hyperemia) for the same stenosis of interest. The secondary study endpoint was coronary collateral flow index (CFI) during the same occlusion...
December 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27986757/cyanate-impaired-angiogenesis-association-with-poor-coronary-collateral-growth-in-patients-with-stable-angina-and-chronic-total-occlusion
#14
Jia Teng Sun, Ke Yang, Jing Yan Mao, Wei Feng Shen, Lin Lu, Qi Hong Wu, Yan Ping Wang, Li Ping Wu, Rui Yan Zhang
BACKGROUND: Cyanate has recently gained attention for its role in the pathogenesis of vascular injury. Nonetheless, the effect of cyanate on angiogenesis remains unclear. METHODS AND RESULTS: In this study, we demonstrated that oral administration of cyanate impaired blood perfusion recovery in a mouse hind-limb ischemia model. A reduction in blood perfusion recovery at day 21 was observed in the ischemic tissue of cyanate-treated mice. Likewise, there were fewer capillaries in the ischemic hind-limb tissue of cyanate-exposed mice...
December 16, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27969649/tct-304-outcomes-of-the-retrograde-approach-through-epicardial-versus-non-epicardial-collaterals-in-chronic-total-occlusion-percutaneous-coronary-intervention
#15
Susanna Benincasa, Lorenzo Azzalini, Barbara Bellini, Mauro Carlino, Antonio Colombo
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969625/tct-283-impact-of-successful-percutaneous-coronary-intervention-on-chronic-total-occlusion-outcomes-in-patients-with-well-developed-coronary-collateral-flow
#16
Seung-Woon Rha, Se Yeon Choi, Byoung Geol Choi, Jae Kyeong Byun, Jun Hyuk Kang, Woo Hyeun Kim, Ja Yeon Choi, James Hall, Sung Hun Park, SunKi Lee, Hu Li, Jin Oh Na, Cheol Ung Choi, Jin Won Kim, Hong Euy Lim, Eung Ju Kim, Chang Gyu Park, Hong-Seog Seo, Dong Joo Oh
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969617/tct-274-size-and-tortuosity-of-a-collateral-channel-are-important-predictors-of-successful-tracking-in-retrograde-percutaneous-coronary-intervention-pci-for-chronic-total-occlusion-cto
#17
Ching-Chang Huang, Yuichi Sasaki, Shih-Wei Meng, Yohei Hokama, Ying-Hsien Chen, Mao-Shin Lin, Chih Fan Yeh, Paul Hsien-Li Kao
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27964934/double-barrel-coronary-artery-after-subintimal-stenting-for-chronic-total-occlusion
#18
Yusuke Watanabe, Yusuke Fujino, Hisaaki Ishiguro, Sunao Nakamura
A 70-year-old man with a medical history of hypertension, dyslipidemia, and diabetes was referred to our hospital for effort angina. Coronary angiography revealed chronic total occlusion (CTO) of the proximal right coronary artery (RCA) that had been collateralized by septal branches from the left anterior descending coronary artery, left circumflex coronary artery, and an antegrade bridge. Three everolimus-eluting stents (Xience-Alpine: 3.0 × 38 mm, 2.75 × 38 mm, and 2.5 × 38 mm; Abbott-Vascular Co...
October 30, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27932170/living-donor-liver-transplantation-in-a-patient-with-extensive-portomesenteric-venous-thrombosis-case-report
#19
S Choi, K K Kim, W S Lee, J M Kang, Y H Park
Extensive portomesenteric venous thrombus preventing restoration of adequate portal venous flow used to be considered a contraindication to liver transplantation. The subject was a 49-year-old male with hepatitis B cirrhosis and extensive thrombosis of portal, splenic, and superior mesenteric veins, and two large collateral vessels; one dilated and tortuous inferior to the pancreaticoduodenal vein and relevant to splanchnic venous return and the other a dilated coronary vein relevant to splenic venous return...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932149/portal-vein-inflow-from-enlarged-coronary-vein-in-liver-transplantation-surgical-approach-and-technical-tips-a-case-report
#20
M Safwan, S Nagai, M S Abouljoud
Portal vein thrombosis is common in patients with end-stage liver disease, with an incidence as high as 26% in liver transplant candidates. It is known to be associated with a high risk of morbidity and mortality posttransplantation, and its management can be challenging. The management options range from a simple thrombendvenectomy to multivisceral transplantation in cases with diffuse portomesenteric thrombosis. We report a case of liver transplantation in which we performed a rare reconstruction of the portal vein...
November 2016: Transplantation Proceedings
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