keyword
MENU ▼
Read by QxMD icon Read
search

coronary bifurcation

keyword
https://www.readbyqxmd.com/read/28624754/automatic-segmentation-of-the-lumen-region-in-intravascular-images-of-the-coronary-artery
#1
Danilo Samuel Jodas, Aledir Silveira Pereira, João Manuel R S Tavares
Image assessment of the arterial system plays an important role in the diagnosis of cardiovascular diseases. The segmentation of the lumen and media-adventitia in intravascular (IVUS) images of the coronary artery is the first step towards the evaluation of the morphology of the vessel under analysis and the identification of possible atherosclerotic lesions. In this study, a fully automatic method for the segmentation of the lumen in IVUS images of the coronary artery is presented. The proposed method relies on the K-means algorithm and the mean roundness to identify the region corresponding to the potential lumen...
June 10, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28606906/a-randomised-comparison-of-conventional-versus-intentional-strategy-in-patients-with-high-risk-prediction-of-side-branch-occlusion-in-coronary-bifurcation-intervention-rationale-and-design-of-the-cit-resolve-trial
#2
Dong Zhang, Dong Yin, Chenxi Song, Chengang Zhu, Ajay J Kirtane, Bo Xu, Kefei Dou
INTRODUCTION: The intentional strategy (aggressive side branch (SB) protection strategy: elective two-stent strategy or jailed balloon technique) is thought to be associated with lower SB occlusion rate than conventional strategy (provisional two-stent strategy or jailed wire technique). However, most previous studies showed comparable outcomes between the two strategies, probably due to no risk classification of SB occlusion when enrolling patients. There is still no randomised trial compared the intentional and conventional strategy when treating bifurcation lesions with high risk of SB occlusion...
June 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28606882/the-effect-of-coronary-bifurcation-and-blood-flow-modelling-in-prediction-of-atherosclerotic-plaque-development-a-serial-computed-tomographic-coronary-angiographic-study
#3
Antonis Sakellarios, Christos V Bourantas, Stella-Lida Papadopoulou, Pieter H Kitslaar, Chrysafios Girasis, Gregg W Stone, Johan H C Reiber, Lampros K Michalis, Patrick W Serruys, Pim J de Feyter, Hector M Garcia-Garcia, Dimitrios I Fotiadis
AIMS: Examine the effect of the daughter branches to the haemodynamics and the potential prediction of atherosclerotic plaque development as well as the best flow division model for accurate blood flow modelling. METHODS AND RESULTS: In this study, we analysed computed tomographic coronary angiography retrospective data portraying 17 coronary artery bifurcations in 15 patients recruited in the PROSPECT MSCT study. The baseline and three year follow-up imaging data were used to reconstruct coronary artery anatomy and in the baseline models blood flow simulations was performed using three flow division approaches: stress-free, Murray's law and Doriot's law...
June 13, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28606788/coronary-bifurcation-model-created-using-a-novel-directional-heat-injury-catheter
#4
Kenji Nakatsuma, Shin Watanabe, Akihiro Tokushige, Erika Yamamoto, Bingyuan Bao, Hiroki Watanabe, Takeshi Kimura, Naritatsu Saito
OBJECTIVES: The present study aimed to develop a swine coronary bifurcation model. BACKGROUND: In human coronary bifurcation lesion, atherosclerotic plaques are usually observed in the lateral wall, whereas the flow divider regions are spared. There is currently no suitable coronary bifurcation animal model, on which a new stent can be tested. METHODS: We developed a novel directional heat injury catheter, which comprised of a non-compliant balloon catheter (diameter: 3...
June 7, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28605936/vascular-disease-and-kidney-stones-abdominal-aortic-calcifications-are-associated-with-low-urine-ph-and-hypocitraturia
#5
Nishant D Patel, Ryan D Ward, Juan Camilo Calle, Eric Remer, Manoj Monga
OBJECTIVE: Vascular calcifications are associated with nephrolithiasis. While studies have demonstrated correlations with vascular disease and calcium stones in kidney stone formers (KSF), an etiologic link has remained elusive. As a non-contrast CT scan (NCCT) is typically part of a stone evaluation, our objective was to evaluate the association of NCCT-based assessment of abdominal aortic calcifications (AAC) with 24-hour urine parameters and stone composition. MATERIALS AND METHODS: 97 KSF were included with CT imaging and 24-hour urine studies...
June 12, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28603592/jailing-polymer-jacketed-guide-wires-during-bifurcation-coronary-interventions-is-associated-with-procedural-myocardial-infarction
#6
Arka Chatterjee, Jeremy S White, Taimoor Hashim, Massoud A Leesar
AIM: To study the relationship of jailed polymer jacketed guide wires (PGW) with procedural myocardial infarction (PMI) after bifurcation coronary interventions. METHODS: Consecutive bifurcation interventions performed from January 2010 to October 2014 were included in the study. Chart review was performed to obtain demographic, clinical and procedural data. PMI was defined as Creatine Kinase MB > 3 × upper reference limit of normal. Multivariate logistic regression was used to ascertain relationship of PGW use with PMI...
May 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28588834/successful-bailout-stenting-strategy-against-lethal-coronary-dissection-involving-left-main-bifurcation
#7
Hiroshi Kubota, Tetsuya Nomura, Yusuke Hori, Kenichi Yoshioka, Daisuke Miyawaki, Ryota Urata, Takeshi Sugimoto, Masakazu Kikai, Natsuya Keira, Tetsuya Tatsumi
Catheter-induced coronary dissection involving left main bifurcation is a rare complication during cardiac catheterization but can become lethal unless it is treated appropriately. Interventional cardiologists always have to pay attention to the risk of complications related to cardiac catheterization and prepare for determining the best bailout strategy for the situation.
June 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28582283/reservoir-pressure-analysis-of-aortic-blood-pressure-an-in-vivo-study-at-five-locations-in-humans
#8
Om Narayan, Kim H Parker, Justin E Davies, Alun D Hughes, Ian T Meredith, James D Cameron
INTRODUCTION: The development and propagation of the aortic blood pressure wave remains poorly understood, despite its clear relevance to major organ blood flow and potential association with cardiovascular outcomes. The reservoir pressure model provides a unified description of the dual conduit and reservoir functions of the aorta. Reservoir waveform analysis resolves the aortic pressure waveform into an excess (wave related) and reservoir (compliance related) pressure. The applicability of this model to the pressure waveform as it propagates along the aorta has not been investigated in humans...
June 2, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28581348/safety-and-efficacy-of-the-tryton-side-branch-stent%C3%A2-for-the-treatment-of-coronary-bifurcation-lesions-an-update
#9
Maik J Grundeken, Robbert J de Winter, Joanna J Wykrzykowska
Percutaneous coronary interventions (PCIs) involving coronary bifurcation lesions are associated with adverse outcomes compared with non-bifurcation lesions. The Tryton Side Branch Stent has been developed to improve clinical outcomes after bifurcation PCI. Areas covered: We will discuss observational data (clinical registries and intravascular imaging studies) and randomized data from the TRYTON trial (comparing Tryton [used in combination with a main branch drug-eluting stent (DES)] with side branch balloon angioplasty [in combination with a main branch DES; also referred to the provisional strategy])...
June 13, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28574987/reconstruction-of-stented-coronary-arteries-from-optical-coherence-tomography-images-feasibility-validation-and-repeatability-of-a-segmentation-method
#10
Claudio Chiastra, Eros Montin, Marco Bologna, Susanna Migliori, Cristina Aurigemma, Francesco Burzotta, Simona Celi, Gabriele Dubini, Francesco Migliavacca, Luca Mainardi
Optical coherence tomography (OCT) is an established catheter-based imaging modality for the assessment of coronary artery disease and the guidance of stent placement during percutaneous coronary intervention. Manual analysis of large OCT datasets for vessel contours or stent struts detection is time-consuming and unsuitable for real-time applications. In this study, a fully automatic method was developed for detection of both vessel contours and stent struts. The method was applied to in vitro OCT scans of eight stented silicone bifurcation phantoms for validation purposes...
2017: PloS One
https://www.readbyqxmd.com/read/28562382/impact-of-mean-platelet-aggregation-degree-on-long-term-clinical-outcomes-among-patients-undergoing-a-complex-percutaneous-coronary-intervention
#11
Quan Li, Mengmeng Li, Xianpeng Yu, Jiqiang He, Yuechun Gao, Xiaoling Zhang, Changyan Wu, Yawei Luo, Yuchen Zhang, Xuejun Ren
OBJECTIVE: The aim of this study was to evaluate the association between the mean platelet aggregation degree and long-term clinical outcomes in patients receiving a complex percutaneous coronary intervention (CPCI). PATIENTS AND METHODS: We screened 2141 patients after a percutaneous coronary intervention (PCI) treated with aspirin and clopidogrel. CPCI was defined as a procedure targeted to at least one of the following: left main disease, bifurcation lesion, ostial lesion, chronic total occlusion, and small-vessel stenting...
May 30, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28555728/platelet-distribution-width-as-the-prognostic-marker-in-coronary-bifurcation-treatment
#12
Adam Kern, Robert J Gil, Krystian Bojko, Ewa Sienkiewicz, Beata Januszko-Giergielewicz, Jerzy Górny, Jacek Bil
INTRODUCTION: Mean platelet volume (MPV) was proved to be a reliable prognostic factor in cardiac patients. However, platelet distribution width (PDW) was disclosed to be more specific marker of platelet reactivity. The aim of study was to evaluate whether baseline PDW value can predict the outcome in patients undergoing percutaneous coronary interventions (PCI) with drug-eluting stent implantation within coronary bifurcation lesions. MATERIAL AND METHODS: It was a two-center observational study, which included patients who underwent PCI within bifurcation lesions between January 2014 and December 2014...
May 28, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28554669/patterns-and-associations-between-dapt-cessation-and-2-year-clinical-outcomes-in-left-main-proximal-lad-versus-other-pci-results-from-the-patterns-of-non-adherence-to-dual-antiplatelet-therapy-in-stented-patients-paris-registry
#13
Jaya Chandrasekhar, Usman Baber, Samantha Sartori, Melissa Aquino, Matthew Tomey, Mitchell Kruckoff, David Moliterno, Timothy D Henry, Giora Weisz, C Michael Gibson, Ioannis Iakovou, Annapoorna Kini, Michela Faggioni, Birgit Vogel, Serdar Farhan, Antonio Colombo, P Gabriel Steg, Bernhard Witzenbichler, Alaide Chieffo, David Cohen, Thomas Stuckey, Cono Ariti, Stuart Pocock, George Dangas, Roxana Mehran
OBJECTIVES: Percutaneous coronary intervention (PCI) of the left main (LM) or proximal left anterior descending artery (pLAD) is considered high-risk as these segments subtend substantial left ventricular myocardial area. We assessed the patterns and associations between dual antiplatelet therapy (DAPT) cessation and 2-year outcomes in LM/pLAD vs. other PCI from the all-comer PARIS registry. METHODS: Two-year major adverse cardiovascular events (MACE) were a composite of cardiac death, myocardial infarction, definite/probable stent thrombosis or target lesion revascularization...
May 12, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28553856/anatomic-study-of-the-morphology-of-the-right-and-left-coronary-arteries
#14
Sadhna Singh, Nasirudeen Ajayi, Lelika Lazarus, Kapil Sewsaran Satyapal
Arising from the aorta, the right (RCA) and left (LCA) coronary arteries provide the arterial supply to both the atria and the ventricles of the heart. An extensive literature review revealed that most studies have either evaluated the morphology of the RCA or the LCA independently. This study aimed to document the relationship between the morphology of the RCA and LCA using coronary angiograms. In addition, variations such as split or double RCA and an absent LCA was documented. A review of 500 coronary angiograms was conducted and the RCA and LCA were classified according to their branching patterns and arterial dominance...
May 29, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28553569/a-case-of-awake-percutaneous-extracorporeal-membrane-oxygenation-for-high-risk-percutaneous-coronary-intervention
#15
Shuangbo Liu, Amir Ravandi, Malek Kass, Basem Elbarouni
With significant improvements in percutaneous coronary intervention (PCI) technology, complex high risk PCI is increasingly offered to patients with limited revascularization options. Percutaneous mechanical circulatory support devices are often utilized for hemodynamic support during these complex procedures. Veno-arterial extracorporeal membrane oxygenation (ECMO) allows full hemodynamic support and provides systemic oxygenation. We describe a case of left main bifurcation stenting performed at our center with ECMO support in an awake patient without general anesthesia...
April 25, 2017: Curēus
https://www.readbyqxmd.com/read/28550174/variability-in-coronary-artery-anatomy-affects-consistency-of-cardiac-damage-following-myocardial-infarction-in-mice
#16
Jiqiu Chen, Delaine K Ceholski, Lifan Liang, Kenneth Fish, Roger J Hajjar
Low reliability and reproducibility in heart failure models are well established. The purpose of the present study is to explore factors that affect model consistency of myocardial infarction (MI) in mice. METHODS: MI was induced by left coronary artery (LCA) ligation. The coronary artery was casted with resin and visualized with fluorescent imaging ex vivo. LCA characteristics and MI size were analyzed individually in each animal, and MI size was correlated with left ventricular (LV) function by echocardiography...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28541601/the-approach-to-coronary-bifurcation-treatment-and-its-outcomes-in-poland-the-single-center-experience
#17
Adam Kern, Robert J Gil, Krystian Bojko, Bartłomiej Rzeszowski, Rakesh Jalali, Jerzy Górny, Jacek Bil
BACKGROUND: Coronary bifurcation lesions pose therapeutic problems during percutaneous coronary interventions. The aim of this study was to analyze the strategy of coronary bifurcation treatment and associated angiographic as well as clinical outcomes in a large hospital in Northern Poland. METHODS: Between January 2012 and January 2014 patients with stable coronary artery disease or non-ST-elevation acute coronary syndrome (NSTE-ACS) were treated with regular drug-eluting stents (rDES) or dedicated bifurcation stents (BiOSS Expert® or BiOSS LIM®)...
May 25, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28516090/lower-aorto-iliac-bifurcation-position-and-incident-cardiovascular-disease-a-multi-ethnic-study-of-atherosclerosis-mesa
#18
Nketi I Forbang, Matthew A Allison, Michael H Criqui
BACKGROUND: With increasing age, a downward shift of the aorto-iliac bifurcation relative to the lumbar spine occurs. A lower bifurcation position is an independent marker for adverse vascular aging and is associated with increased burden of cardiovascular disease (CVD) risk factors; however, the associations between lower bifurcation position and CVD events remain unknown. METHODS: Abdominal computed tomography scans were used to measure the aorto-iliac bifurcation distance (AIBD, distance from the aorto-iliac bifurcation to the L5/S1 disc space)...
October 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28515858/three-dimensional-optical-coherence-tomography-reconstruction-of-bifurcation-stenting-using-the-szabo-anchor-wire-technique
#19
Katherine Yu, Harkawal Hundal, Todd Zynda, Arnold Seto
Ostial lesions present unique challenges for percutaneous coronary intervention (PCI). These lesions are often more calcified, fibrotic, rigid, and more prone to elastic recoil. Intervention on these lesions is associated with higher procedural complications and higher rates of restenosis. Ostial lesions require precise stent placement in the ostium with the absence of side branch compromise. Accurate stent placement in the ostium without side branch compromise is difficult to accomplish with angiography alone...
April 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28511718/simultaneous-development-of-kawasaki-disease-following-acute-human-adenovirus-infection-in-monozygotic-twins-a-case-report
#20
Sayaka Fukuda, Shuichi Ito, Maya Fujiwara, Jun Abe, Nozomu Hanaoka, Tsuguto Fujimoto, Hiroshi Katsumori
BACKGROUND: The etiology of Kawasaki disease (KD) remains unknown. However, many studies have suggested that specific genetic factors and/or some infectious agents underlie the onset of KD. Previous studies have suggested that human adenovirus (HAdV) is one of the triggering pathogens of KD. Here, we report monozygotic twin boys who sequentially developed KD in conjunction with acute HAdV type 3 (HAdV-3) infection. CASE PRESENTATION: The patients were four-year-old monozygotic twin boys...
May 16, 2017: Pediatric Rheumatology Online Journal
keyword
keyword
10347
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"