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Coronary collateral

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https://www.readbyqxmd.com/read/29783062/ykl-40-levels-increase-with-declining-ankle-brachial-index-and-are-associated-with-long-term-cardiovascular-mortality-in-peripheral-arterial-disease-patients
#1
Clemens Höbaus, Maximilian Tscharre, Carsten Thilo Herz, Gerfried Pesau, Thomas Wrba, Renate Koppensteiner, Gerit-Holger Schernthaner
BACKGROUND AND AIMS: YKL-40 is an inflammatory marker secreted by macrophages and is expressed in atherosclerotic plaques. YKL-40 increases in coronary artery disease (CAD) with poor coronary collateral vessel development. Higher levels are linked to reduced survival in CAD patients. Studies evaluating YKL-40 in patients with peripheral arterial disease (PAD) are scarce. This study aims to elucidate a possible link between YKL-40 and PAD severity as well as cardiovascular long-term mortality...
May 9, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29773952/remote-ischemic-preconditioning-in-myocardial-protection-in-hemodialysis-patients
#2
Marcelo R Bacci, Livia Y Vasconcelos, Neif Murad, Antonio Carlos P Chagas, Ana Carolina Capuano, Beatriz Ca Alves, Edimar C Pereira, Ligia A Azzalis, Virginia Bc Junqueira, Fernando LA Fonseca
Background: Remote ischemic preconditioning (RIPC) is a procedure that generates a brief period of ischemia followed by reperfusion. The role of RIPC in protecting myocardial ischemia during hemodialysis is not yet established. The aim of the study was to evaluate RIPC myocardial protection as evaluated by ultrasensitive I troponin in hemodialysis outpatients. Patients and methods: A double-blind randomized trial with two groups: intervention submitted to RIPC and control group without RIPC...
2018: International Journal of General Medicine
https://www.readbyqxmd.com/read/29764036/-comparison-of-prognostic-value-of-18-f-fdg-pet-ct-myocardial-metabolism-imaging-and-coronary-collateral-circulation-in-patients-with-cto-lesions
#3
G Y Zhai, J L Wang, Y Y Liu, Y J Zhou
Objective: To evaluate the location, extent of viable myocardial of chronic total coronary occlusions(CTO)lesions by (18)F-FDG PET myocardial metabolism imaging and then compare with coronary collateral circulation(CCC) to evaluate the prognostic evaluation in patients with CTO lesions. Methods: A total of Sixty consecutive patients with CTO lesions referred for viability assessment from April 2016 to April 2017 in Department of Cardiology, Beijing Anzhen Hospital were included in the study. These patients underwent (99m)Tc-sestamibi ECG-gated SPECT rest myocardial perfusion imaging and ECG-gated (18)F-FDG PET/CT myocardial metabolic imaging, as well as coronary arteriography were recruited in this study...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29759708/intra-atrial-right-coronary-artery-and-its-ablation-implications
#4
Balaji Krishnan, Caroline Cross, Richard Dykoski, David G Benditt, Mackenzie Mbai, Edward McFalls, Jian-Ming Li, Stefan Bertog, Venkatakrishna N Tholakanahalli
OBJECTIVES: The study examined the frequency in which a right coronary artery (RCA) anomaly resulting in intra-atrialization of the vessel might increase risk of RCA damage during routine radiofrequency ablation in the right atrium even with low power or temperature. BACKGROUND: Right coronary artery (RCA) injury with endocardial RF ablation of the right atrium is a rare complication. METHODS: This prospective observational study comprised an analysis of coronary artery anatomies in 331 patients who underwent autopsies at our institution from 2005 to 2014...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759706/the-human-left-atrial-venous-circulation-as-a-vascular-route-for-atrial-pharmacological-therapies-effects-of-ethanol-infusion
#5
Miguel Valderrábano, Percy Francisco Morales, Moisés Rodríguez-Mañero, Candela Lloves, Paul A Schurmann, Amish S Dave
OBJECTIVES: This study catalogued the human venous left atrium (LA) circulation system and the ablative effects of ethanol in different branches. BACKGROUND: Vascular routes to target the LA could have significant therapeutic potential. Beyond the vein of Marshall (VOM), the fluoroscopic LA venous anatomy has not been described. METHODS: Patients undergoing ethanol infusion in the VOM as adjunctive therapy to atrial fibrillation (AF) catheter ablation were included in this study...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29749648/adult-type-alcapa-syndrome-a-rare-coronary-artery-anomaly
#6
Alexandros P Patrianakos, Adam Hatzidakis, Maria Marketou, Fragiskos I Parthenakis
Anomalous origin of the left coronary artery arising from the pulmonary artery (ALCAPA or Bland-White-Garland syndrome) is a rare but serious congenital coronary artery anomaly, with a poor prognosis without surgical repair. There are two types of ALCAPA syndrome: infant type and adult type. We present a rare case of a 63-year-old female patient, with isolated left anterior descending artery origin from the pulmonary artery. Coronary computed tomography angiography revealed giant and tortuous coronary arteries with many collaterals between the left and right coronary system...
May 11, 2018: Echocardiography
https://www.readbyqxmd.com/read/29747518/prognostic-implications-of-coronary-collaterals-in-transmural-infarct-related-percutaneous-coronary-interventions
#7
Thomas F Whayne, Gretchen Wells, Adrian Messerli
No abstract text is available yet for this article.
January 1, 2018: Angiology
https://www.readbyqxmd.com/read/29721336/impact-of-admission-blood-glucose-on-coronary-collateral-flow-in-patients-with-st-elevation-myocardial-infarction
#8
Ozge Kurmus, Turgay Aslan, Berkay Ekici, Sezen Baglan Uzunget, Sukru Karaarslan, Asli Tanindi, Aycan Fahri Erkan, Ebru Akgul Ercan, Celal Kervancıoglu
In patients with acute myocardial infarction, glucose metabolism is altered and acute hyperglycemia on admission is common regardless of diabetes status. The development of coronary collateral is heterogeneous among individuals with coronary artery disease. In this study, we aimed to investigate whether glucose value on admission is associated with collateral flow in ST-elevation myocardial infarction (STEMI) patients. We retrospectively evaluated 190 consecutive patients with a diagnosis of first STEMI within 12 hours of onset of chest pain...
2018: Cardiology Research and Practice
https://www.readbyqxmd.com/read/29717103/angina-pectoris-in-young-male-due-to-agenesis-of-left-circumflex-artery
#9
Thomas J Guterbaum, Kristian A Øvrehus, Karsten T Veien, Jacob E Møller, Hans Mickley
BACKGROUND This case study demonstrated that although highly symptomatic, agenesis of the left circumflex artery was a benign finding. Anomalies of the coronary arteries were found to be the cause of sudden death in a young individual. Left circumflex anomalies were not associated with major cardiac events. CASE REPORT A 20-year-old male was admitted due to syncope preceded by chest pain. His electrocardiogram (ECG) showed global ST segment elevation as well as biphasic T waves in anterior precordial leads...
May 2, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29702990/traditional-cardiovascular-risk-factors-and-coronary-collateral-circulation-protocol-for-a-systematic-review-and-meta-analysis-of-case-control-studies
#10
Zhenhua Xing, Junyu Pei, Liang Tang, Xinqun Hu
BACKGROUND: Well-developed coronary collateral circulation usually results in fewer infarct size, improved cardiac function, and fewer mortality. Traditional coronary risk factors (diabetes, hypertension, and smoking) have some effects on coronary collateral circulation. However, the association between these risk factors and coronary collateral circulation are controversial. Given the confusing evidences regarding traditional cardiovascular risk factors on coronary collateral circulation, we performed this meta-analysis protocol to investigate the relationship between traditional risk factors of coronary artery disease and coronary collateral circulation...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29691271/unusual-congenital-coronary-artery-anomaly-in-a-young-adult-presenting-as-sudden-cardiac-arrest
#11
Manuel Cortes, Carlos A Roldan, Stacey Clegg
A previously asymptomatic young female with no previous medical or cardiac history collapsed during indoor exercise. A portable automatic external defibrillator showed a shockable rhythm. She received multiple electrical shocks with return to normal sinus rhythm without ischaemic ECG changes. Her troponin level was mildly elevated. A transthoracic echocardiogram revealed moderately reduced left ventricular ejection fraction with global hypokinesis. During emergent coronary angiography, the left main coronary artery could not be found...
April 24, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29678849/effects-of-adenovirus-mediated-vegf165-gene-therapy-on-myocardial-infarction
#12
Chao Wang, Boya Zhang, Yu Lin, Yang Dong
AIM: To evaluate the role of adenovirus-mediated transduction human VEGF isoform 165 via direct myocardial injection in rats with an occluded circumflex coronary artery, and the possible underlying mechanism. METHODS: Sprague-Dawley rats were induced myocardial infarction (MI) with ligation of the left coronary artery. Rats were randomly divided into 4 groups: 1) the sham group; 2) the MI group; 3) the NS (normal saline) group and 4) the VEGF group. Direct myocardial injection of 0...
March 2018: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29665152/endothelium-derived-hyperpolarization-mediated-vasodilatation-compensates-nitric-oxide-mediated-endothelial-dysfunction-during-ischemia-in-diabetes-induced-canine-coronary-collateral-microcirculation-in-vivo
#13
Toyotaka Yada, Hiroaki Shimokawa, Hiroyuki Tachibana
OBJECTIVES: It has been previously demonstrated that endothelial caveolin-1 plays crucial roles to produce an endothelium-derived hyperpolarizing factor in mouse mesenteric arteries. We examined whether this mechanism is involved in the endothelium-derived hyperpolarizing-mediated responses to compensate reduced NO-mediated responses in diabetes mellitus during coronary occlusion in dogs in vivo. METHODS: Canine subepicardial collateral coronary small arteries (≥100 μm) and arterioles (<100 μm) were observed by an intravital microscope...
April 17, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29664428/-case-report-and-the-surgical-treatment-of-two-cases-with-pulmonary-atresia-in-which-pulmonary-arteries-is-circulated-by-coronary-arteries
#14
Kahraman Yakut, Kürşad Tokel, Birgül Varan, İlkay Erdoğan, Murat Özkan
Pulmonary atresia (PA) and ventricular septal defect (VSD) can occur in a variety of ways, from simple valve atresia to a condition in which circulation to the pulmonary bed occurs through collateral arteries separated from the aorta and there are no real pulmonary arteries, or they are present but hypoplastic. The size of the pulmonary arteries and concomitant complex cardiac lesions are important in making decisions about treatment and correctional alternatives. While complete correction surgeries in the style of a correction of tetralogy of Fallot are performed in simpler cases, many very invasive procedures are also performed and the resulting quality of life is very variable...
April 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29656656/effect-of-coronary-collaterals-on-prognosis-in-patients-undergoing-primary-percutaneous-coronary-intervention-for-acute-st-segment-elevation-myocardial-infarction-a-meta-analysis
#15
Kongyong Cui, Shuzheng Lyu, Xiantao Song, Fei Yuan, Feng Xu, Min Zhang, Mingduo Zhang, Wei Wang, Dongfeng Zhang, Jinfan Tian
The impact of coronary collaterals on the prognosis in patients with acute ST-segment elevation myocardial infarction (STEMI) in the era of coronary revascularization remains controversial. The purpose of this meta-analysis was to investigate the effect of coronary collateral on clinical outcomes, especially mortality (≥6 months), in patients undergoing primary percutaneous coronary intervention (PCI) for STEMI. Eligible observational studies were selected by searching PubMed, EMBASE, and Cochrane Library up to August 9, 2017...
January 1, 2018: Angiology
https://www.readbyqxmd.com/read/29656325/dosing-of-the-second-generation-cryoballoon-using-acute-time-to-pulmonary-vein-isolation-as-an-indicator-of-durable-ablation-in-a-canine-model
#16
Wilber Su, Nicolas Coulombe, Nicole Kirchhof, Erin Grassl, Dan Wittenberger
BACKGROUND: Rigid time-based dosing protocol(s) currently used in the clinic for cryoballoon ablation of atrial fibrillation may be inadequate to guide the circumferential and transmural cryothermal energy transfer across the pulmonary vein (PV) and may result in injury to collateral tissues or electrical gaps between the PV and left atrium (LA). OBJECTIVE: A physiologic endpoint (e.g., acute time-to-PV isolation a.k.a. time-to-effect; TTE) may be effective in the determination of a transmural lesion formation and may allow for individualized ablation dosing across each PV...
April 14, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29628455/vascular-network-inside-the-heart-collateral-flow-on-color-doppler-echo-in-a-child-with-anomalous-left-coronary-artery-from-the-pulmonary-artery-alcapa
#17
Lisheng Lin, Takashi Murakami, Junko Shiono, Hitoshi Horigome
No abstract text is available yet for this article.
April 6, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29622966/influence-of-collaterals-on-the-left-ventricular-end-diastolic-pressure-and-serum-nt-probnp-levels-in-patients-with-coronary-chronic-total-occlusion
#18
Fuad Samadov, Osman Yesildag, Ibrahim Sari, Halil Atas, Aysel Akhundova, Yelda Basaran
Objective: Although numerous studies have shown the protective effects of the well-developed coronary collaterals on left ventricular functions, the relationship between collateral grade and left ventricular end diastolic pressure has not been studied in chronic total occlusion patients. Also, there are conflicting data on the effect of collaterals on NT-proBNP levels. The aim of our study was to evaluate the relationship between coronary collateral circulation and left ventricular end diastolic pressure and NT-proBNP levels in chronic total occlusion patients...
June 2017: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622147/transcatheter-laceration-of-aortic-leaflets-to-prevent-coronary-obstruction-during-transcatheter-aortic-valve-replacement-concept-to-first-in-human
#19
Jaffar M Khan, Danny Dvir, Adam B Greenbaum, Vasilis C Babaliaros, Toby Rogers, Gabriel Aldea, Mark Reisman, G Burkhard Mackensen, Marvin H K Eng, Gaetano Paone, Dee Dee Wang, Robert A Guyton, Chandan M Devireddy, William H Schenke, Robert J Lederman
OBJECTIVES: This study sought to develop a novel technique called bioprosthetic or native aortic scallop intentional laceration to prevent coronary artery obstruction (BASILICA). BACKGROUND: Coronary artery obstruction is a rare but fatal complication of transcatheter aortic valve replacement (TAVR). METHODS: We lacerated pericardial leaflets in vitro using catheter electrosurgery, and tested leaflet splaying after benchtop TAVR. The procedure was tested in swine...
April 9, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29616518/coronary-artery-bypass-surgery-in-patients-with-chronic-brain-hypoperfusion
#20
Hajime Imura, Yuji Maruyama, Kenichiro Takahashi, Dai Nishina, Takashi Nitta
BACKGROUND: Cerebrovascular disease (CVD) is a risk factor of stroke and cerebral hypoperfusion is one of the underlying mechanisms. We hypothesized that coronary artery bypass grafting (CABG) can be performed at an acceptable risk for such patients without concomitant surgery for CVD. METHODS: Carotid echo was carried out for 538 consecutive patients undergoing isolated CABG between 2005 and 2016. Magnetic resonance image/angiography (MRI/A) for neck and brain was performed for 288 patients (stenosis≥50% in echo were basically included)...
April 3, 2018: Journal of Cardiovascular Surgery
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