keyword
MENU ▼
Read by QxMD icon Read
search

Circumflex

keyword
https://www.readbyqxmd.com/read/28432003/the-effectiveness-of-super-selective-injection-with-anchor-balloon-technique-for-collateral-channel-assessment
#1
Hiroki Shibutani, Yuzo Akita, Yumie Matsui, Masahiro Yoshinaga, Masahiro Karakawa, Etsuo Tsuchikane
The careful assessment of collateral channels is important for a retrograde approach for a chronic total coronary occlusion (CTO). This case report describes a percutaneous coronary intervention for CTO of the distal right coronary artery with good collateral circulation. All visible collateral channels failed by the retrograde approach; however, the procedure was successful using the distal atrial circumflex (AC) channel. Although this distal channel was poorly visualized on standard coronary angiography, it was clearly contrasted retrogradely from the CTO exit using a super-selective injection through the proximal AC channel as the antegrade flow was obstructed by the anchor balloon...
April 8, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28431861/cardiac-computed-tomography-derived-myocardial-mass-at-risk-using-the-voronoi-based-segmentation-algorithm-a-histological-validation-study
#2
Seiko Ide, Satoru Sumitsuji, Osamu Yamaguchi, Yasushi Sakata
BACKGROUND: Myocardial mass at risk (MMAR) is an important predictor of adverse cardiac events in patients with ischemic heart disease. This study aims to validate the accuracy of MMAR calculated from cardiac computed tomography (CCT) data using the Voronoi-based segmentation algorithm in comparison with actual MMAR measured on ex-vivo swine hearts prepared by injecting a dye into the coronary arteries. METHODS: Fifteen extracted swine hearts had India ink injected into one of the major coronary arteries...
April 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28420590/volume-and-dimensions-of-angiographically-normal-coronary-arteries-assessed-by-multidetector-computed-tomography
#3
Samuel Kiil Sørensen, Jørgen Tobias Kühl, Andreas Fuchs, Jakob Boesgaard Norsk, Lars Valeur Køber, Børge Grønne Nordestgaard, Klaus Fuglsang Kofoed
BACKGROUND: The objective of this study was to determine normal values for coronary artery volume (CAV) and individual vasculature and segment dimensions. METHODS: We examined 200 healthy volunteers with an Agatston score of 0 and a normal, high quality coronary CTA. Using 320 slice multidetector row CT and designated vessel tracing software with border detection algorithm, the main coronary arteries and branches were delineated and total and segmental dimensions calculated...
April 4, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28415163/fragmented-qrs-and-abnormal-creatine-kinase-mb-are-predictors-of-coronary-artery-disease-in-patients-with-angina-and-normal-electrocardiographys
#4
Jung Joo Lee, Jae Hoon Lee, Jin Woo Jeong, Jun Young Chung
Background/Aims: Patients with symptoms of coronary artery disease (CAD) often display normal tracings or only nonspecific changes on electrocardiography (ECG). The aim of this study was to explore strategic elements of the ECG and other potential factors that are predictive of CAD in this scenario. Methods: This was an observational study of 142 patients with the chief complaint of chest pain, each of whom presented with a normal ECG and was subjected to emergency coronary angiography (CAG)...
April 17, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28404227/multivessel-stent-thrombosis-with-optical-coherence-tomography-oct-utilization-for-therapeutic-guidance
#5
Neil Yager, Arjun Majithia, Sergio Waxman
A 63 year old male presents with anterior ST elevation myocardial infarction. Two years prior he had PCI with DES to the proximal left anterior descending (LAD) and circumflex arteries following an abnormal stress test. Clopidogrel was discontinued several weeks prior to this presentation.
March 31, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28393978/-anomalous-left-coronary-artery-origin-from-the-pulmonary-artery-causing-angina-report-of-one-case
#6
Héctor Ugalde P, Sebastián Rozas A, María Ignacia Sanhueza F, María Cecilia Yubini L, Sebastián García B
Anomalies of the origin of coronary arteries are detected in 0.5-1.5% of all angiographies. Anomalous origin of the left main trunk is the most uncommon and its origin from pulmonary artery in adults is exceptional, usually because it is associated with a short survival. We report a 49-year-old female, presenting with a two months history of angina. The exercise electrocardiogram suggested ischemia. A coronary angiography was performed, showing the absence of the left main trunk in the left coronary sinus, a dilated right coronary artery, with no lesions and extensive collateral circulation to the anterior descending and circumflex arteries, with inverted flow and the left main trunk draining to the pulmonary artery...
January 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28386775/intermittent-pacing-therapy-favorably-modulates-infarct-remodeling
#7
André Uitterdijk, Tirza Springeling, Kevin C M Hermans, Daphne Merkus, Vincent J de Beer, Charlotte Gorsse-Bakker, Eric Mokelke, Evangelos P Daskalopoulos, Piotr A Wielopolski, Jack P M Cleutjens, W Matthijs Blankesteijn, Frits W Prinzen, Willem J van der Giessen, Robert-Jan M van Geuns, Dirk J Duncker
Despite early revascularization, remodeling and dysfunction of the left ventricle (LV) after acute myocardial infarction (AMI) remain important therapeutic targets. Intermittent pacing therapy (IPT) of the LV can limit infarct size, when applied during early reperfusion. However, the effects of IPT on post-AMI LV remodeling and infarct healing are unknown. We therefore investigated the effects of IPT on global LV remodeling and infarct geometry in swine with a 3-day old AMI. For this purpose, fifteen pigs underwent 2 h ligation of the left circumflex coronary artery followed by reperfusion...
May 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28384847/variation-in-the-branching-pattern-of-third-part-of-axillary-artery-a-case-report
#8
Aritra Banerjee, Chiman Kumari, Saroj Kaler Jhajhria
Anatomical variation of the branching pattern of axillary artery is very common. The knowledge of this variation is often useful during different surgical and interventional procedures. Variations include typically of Lateral Thoracic Artery (LTA) and Posterior Circumflex Humeral Artery (PCHA). The present case has been reported to document the variation of LTA and PCHA. The axilla of a 65-year-old embalmed female cadaver was routinely dissected for educational purpose in the Department of Anatomy, AIIMS, New Delhi, India...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28382658/regional-assessment-of-in-vivo-myocardial-stiffness-using-3d-magnetic-resonance-elastography-in-a-porcine-model-of-myocardial-infarction
#9
Shivaram P Arunachalam, Arvin Arani, Francis Baffour, Joseph A Rysavy, Phillip J Rossman, Kevin J Glaser, David S Lake, Joshua D Trzasko, Armando Manduca, Kiaran P McGee, Richard L Ehman, Philip A Araoz
PURPOSE: The stiffness of a myocardial infarct affects the left ventricular pump function and remodeling. Magnetic resonance elastography (MRE) is a noninvasive imaging technique for measuring soft-tissue stiffness in vivo. The purpose of this study was to investigate the feasibility of assessing in vivo regional myocardial stiffness with high-frequency 3D cardiac MRE in a porcine model of myocardial infarction, and compare the results with ex vivo uniaxial tensile testing. METHODS: Myocardial infarct was induced in a porcine model by embolizing the left circumflex artery...
April 5, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28373791/transcatheter-coil-embolization-of-iatrogenic-coronary-artery-left-ventricle-fistula-after-mitral-valve-replacement
#10
Ata Firuzi, Mohammad Javad Alemzadeh-Ansari, Hamid Reza Pouraliakbar
Acquired causes of coronary fistulas are rare disorders and may develop following coronary atherosclerosis, infection, or trauma (iatrogenic). Iatrogenic coronary fistulas may be acquired secondary to surgical or nonsurgical interventions. We describe a case of an iatrogenic coronary artery-left ventricle fistula following mitral valve replacement surgery, presented with ventricular arrhythmia and heart failure. In a unique technique, we implanted three coils with the aid of a Scepter C balloon with inflation at the ostial portion of the left circumflex artery...
April 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28373781/the-prevalence-of-coronary-artery-anomalies-in-qassim-province-detected-by-cardiac-computed-tomography-angiography
#11
Osama A Smettei, Sawsan Sayed, Rami M Abazid
BACKGROUND: Coronary artery anomalies (CAAs) affect about 1% of the general population based on invasive coronary angiography (ICA) data, computed tomography angiography (CTA) enables better visualization of the origin, course, relation to the adjacent structures, and termination of CAAs compared to ICA. OBJECTIVE: The aim of our work is to estimate the frequency of CAAs in Qassim province among patients underwent cardiac CTA at Prince Sultan Cardiac Center. METHODS: Retrospective analysis of the CTA data of 2235 patients between 2009 and 2015...
April 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28366791/restoration-of-basic-hand-function-following-devastating-hand-injuries-using-a-microsurgically-fabricated-chimeric-iliac-osteocutaneous-flap
#12
Zhao Hui Pan, Ping Ping Jiang, Shan Xue, Hongfei Li, Jian Li Wang
Reconstruction following devastating hand injuries, with amputations of the thumb plus multiple digits, is challenging. Double flap or combined flap transfers may be options in such cases. Between 2012 and 2014, 6 patients underwent hand reconstruction following devastating injuries with amputations of the thumb and multiple digits. Sensate anterolateral thigh free flaps and superficial circumflex iliac artery osteocutaneous flaps were microsurgically fabricated as sequential chimeric flaps. Basic hand function, including pulp-to-palm distance, pinch strength, sensation recovery and modified DASH scores, were evaluated...
March 21, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28365266/effect-of-coronary-anatomy-and-hydrostatic-pressure-on-intracoronary-indices-of-stenosis%C3%A2-severity
#13
Tobias Härle, Mareike Luz, Sven Meyer, Kay Kronberg, Britta Nickau, Javier Escaned, Justin Davies, Albrecht Elsässer
OBJECTIVES: The authors sought to analyze height differences within the coronary artery tree in patients in a supine position and to quantify the impact of hydrostatic pressure on intracoronary pressure measurements in vitro. BACKGROUND: Although pressure equalization of the pressure sensor and the systemic pressure at the catheter tip is mandatory in intracoronary pressure measurements, subsequent measurements may be influenced by hydrostatic pressure related to the coronary anatomy in the supine position...
March 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28364199/flow-dynamics-and-energy-efficiency-of-flow-in-the-left-ventricle-during-myocardial-infarction
#14
Vivek Vasudevan, Adriel Jia Jun Low, Sarayu Parimal Annamalai, Smita Sampath, Kian Keong Poh, Teresa Totman, Muhammad Mazlan, Grace Croft, A Mark Richards, Dominique P V de Kleijn, Chih-Liang Chin, Choon Hwai Yap
Cardiovascular disease is a leading cause of death worldwide, where myocardial infarction (MI) is a major category. After infarction, the heart has difficulty providing sufficient energy for circulation, and thus, understanding the heart's energy efficiency is important. We induced MI in a porcine animal model via circumflex ligation and acquired multiple-slice cine magnetic resonance (MR) images in a longitudinal manner-before infarction, and 1 week (acute) and 4 weeks (chronic) after infarction. Computational fluid dynamic simulations were performed based on MR images to obtain detailed fluid dynamics and energy dynamics of the left ventricles...
March 31, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28363949/incidental-finding-of-anomalous-circumflex-coronary-artery-from-right-coronary-sinus-prior-to-aortic-valve-surgery
#15
Amer Harky, Alexander Hof, Mohammad U Ahmad, Rakesh Uppal
Anomalous origin of the left circumflex (Cx) artery is a common and mostly benign coronary artery anomaly. We report the case of a man aged 52 years who presented to his local hospital with progressive breathlessness on exertion and syncopal episodes. His admission transthoracic echocardiography (TTE) showed bicuspid aortic valve, severe aortic stenosis with a valve area of 0.5 cm(2) and his left ventricular ejection fraction (LVEF) was 27%. His coronary angiogram showed normal coronary arteries but anomalous origin of the Cx artery from the right coronary...
March 31, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28359681/evaluation-of-plaque-morphology-by-64-slice-coronary-computed-tomographic-angiography-compared-to-intravascular-ultrasound-in-nonocclusive-segments-of-coronary-arteries
#16
Manoj Kesarwani, Rine Nakanishi, Tae-Young Choi, David M Shavelle, Matthew J Budoff
RATIONALE AND OBJECTIVES: Although intravascular ultrasound (IVUS) is the current gold standard for plaque characterization, noninvasive coronary computed tomographic angiography (CCTA) requires further evaluation. The ability to detect plaque morphology by CCTA remains unclear. The purpose of this study was to evaluate the diagnostic accuracy of CCTA for plaque detection and morphology. MATERIALS AND METHODS: Thirty-one patients underwent cardiac catheterization with IVUS and CCTA...
March 27, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28355655/coronary-artery-bypass-surgery-in-diffuse-advanced-coronary-artery-disease-1-year-clinical-and-angiographic-results
#17
Luciana Oliveira Cascaes Dourado, Marcio Sommer Bittencourt, Alexandre Costa Pereira, Nilson Tavares Poppi, Luis Alberto Oliveira Dallan, José Eduardo Krieger, Luiz Antonio Machado Cesar, Luís Henrique Wolff Gowdak
Background Proper treatment of patients with diffuse, severe coronary artery disease (CAD) is a challenge due to its complexity. Thus, data on the outcomes after coronary artery bypass graft (CABG) in this population is scarce. In this study, we aimed to determine the impact of CABG on the clinical and functional status, as well as graft patency in those individuals. Methods Patients with severe and diffuse CAD who underwent incomplete CABG due to complex anatomy or extensive distal coronary involvement were evaluated preoperatively and 1 year after surgery...
March 29, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28346530/quantification-of-left-coronary-bifurcation-angles-and-plaques-by-coronary-computed-tomography-angiography-for-prediction-of-significant-coronary-stenosis-a-preliminary-study-with-dual-source-ct
#18
Yue Cui, Wenjuan Zeng, Jie Yu, Jing Lu, Yuannan Hu, Nan Diao, Bo Liang, Ping Han, Heshui Shi
PURPOSE: To evaluate the diagnostic performance of left coronary bifurcation angles and plaque characteristics for prediction of coronary stenosis by dual-source CT. METHODS: 106 patients suspected of coronary artery disease undergoing both coronary computed tomography angiography (CCTA) and invasive coronary angiography (CAG) within three months were included. Left coronary bifurcation angles including the angles between the left anterior descending artery and left circumflex artery (LAD-LCx), left main coronary artery and left anterior descending artery (LM-LAD), left main coronary artery and left circumflex artery (LM-LCx) were measured on CT images...
2017: PloS One
https://www.readbyqxmd.com/read/28345270/false-positive-retroaortic-left-circumflex-coronary-artery-in-a-patient-with-atrial-septal-defect
#19
Saurabh Kumar Gupta, Anunay Gupta, Sivasubramanian Ramakrishnan, Shyam S Kothari
Retroaortic course of coronary artery is a relative contraindication for device closure of an atrial septal defect. In this brief report, we demonstrate, for the first time, inferior aortic recess mimicking retroaortic left circumflex coronary artery in a patient with atrial septal defect. This distinction is important to avoid spurious diagnosis of anomalous coronary artery denying patient a chance of nonsurgical closure of atrial septal defect.
March 27, 2017: Echocardiography
https://www.readbyqxmd.com/read/28344626/super-dominant-right-coronary-artery-absent-left-circumflex-artery-and-left-anterior-descending-artery-arising-from-right-coronary-sinus
#20
Tariq Enezate, Jad Omran, Kul Aggarwal
No abstract text is available yet for this article.
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
keyword
keyword
36878
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"