Search Results
Results 451 - 500 of 1987
< 5 6 7 8 9 10 11 12 13 14 15 >
Bouchot Olivier - - 2010
BACKGROUND: A bloodless field is important for visualizing relevant anatomical structures and facilitating construction of high-quality coronary anastomoses during off-pump coronary artery bypass graft surgery (OPCABG). Currently employed devices can damage target arteries as well as myocardium and are not uniformly effective, especially with diseased arteries. METHODS: LeGoo (Pluromed, Woburn, ...
Bigdeli Amir K - - 2010
Among coronary artery anomalies, single coronary artery is one of the rarest anomalies. Pulmonary origins of the coronary arteries, coronary artery fistulae, and anomalous aortic origins of the coronary arteries are the most common anomalies requiring surgical intervention. In this case, we describe the performance of bypass grafting after unsuccessful ...
Andrade Jason G - - 2010
Congenital coronary artery anomalies have been reported in fewer than 1.3% of patients undergoing coronary angiography. Most commonly, they take the form of an anomalous origin of one of the major epicardial vessels or variations in their epicardial course. The presence of an intracavitary course of an intact epicardial coronary ...
Hill Sharleen F - - 2010
BACKGROUND: The concept of non-atherosclerotic coronary artery pathology in sudden cardiac death (SCD) has not been given the attention it deserves. OBJECTIVE: To determine the incidence of non-atherosclerotic coronary artery pathology in SCD and raise awareness among cardiologists and pathologists alike. DESIGN: Retrospective non-case-controlled analysis. Setting Cardiac pathology centre at ...
Goo Hyun Woo - - 2010
The potential impact of dual-source ECG-triggered sequential CT scan on coronary artery visibility has not been evaluated in free-breathing young children. To compare coronary artery visibility in free-breathing young children with congenital heart disease on cardiac 64-slice CT between dual-source ECG-triggered sequential (DSET) scan and single-source non-ECG-synchronized spiral (SSNE) scan. ...
Kim Jeong Su - - 2010
A 67-year-old man was admitted to our institution with sudden and persistent chest pain for 3 days. Coronary angiography showed massive thrombotic occlusion of the right coronary artery. The patient received intracoronary thrombolysis with alteplase (recombinant tissue-type plasminogen activator, rt-PA). On repeated angiography, there was marked resolution of intracoronary thrombus. ...
Angeli Emanuela - - 2010
To analyse the long-term patency of coronary arteries after neonatal arterial switch operation (ASO). A retrospective study of the operative reports, follow-up and postoperative catheterisation data of 119 patients, who underwent the great arteries (TGA) repair since 1991, has been carried out. Patient population: Among the 133 survivors of the ...
Triantafyllidi Helen - - 2010
Coronary artery ectasia is usually linked to coronary atherosclerosis. Its primary defect is a destruction of vascular media, which leads to coronary dilatation. The aim of the present study is to evaluate whether ascending aorta present anatomical and functional wall changes in patients with coronary ectasia compared with patients without ...
Lee Hye-Jeong - - 2010
OBJECTIVE: The objective of this study was to evaluate the accuracy of coronary artery calcium scanning in identifying coronary anomalies and potentially high-risk interarterial courses. MATERIALS AND METHODS: Ninety-five consecutive patients who were diagnosed with a coronary anomaly on CT coronary angiography were enrolled, and 95 age- and sex-matched individuals ...
LaBounty Troy M - - 2010
OBJECTIVES: This study assessed the diagnostic performance of coronary computed tomography angiography (CTA) for the detection and exclusion of significant coronary artery stenosis as remotely interpreted on a mobile handheld device with dedicated medical imaging software. BACKGROUND: Recent advances in technology now permit remote interpretation of medical imaging studies on ...
Kirbis Simona - - 2010
BACKGROUND AND AIM: Raised levels of inflammation markers are associated with worse prognosis in patients with coronary artery disease. It is generally believed, although it has never been proven, that inflammation markers are released from (un)stable plaques in coronary arteries. We investigated this issue by directly comparing levels of inflammation ...
de Agustín José A - - 2010
The presence of only a single coronary artery is a rare congenital coronary artery anomaly. In most cases, it is an incidental finding on coronary angiography and has no clinical significance. However, it can cause angina, myocardial infarction or even sudden death, particularly in young patients in whom the course ...
Takumi Takuro - - 2010
Endothelial dysfunction is associated with arterial stiffness in large arteries. The purpose of this study was to investigate the association between coronary endothelial dysfunction, coronary artery compliance and wall shear stress in patients with early atherosclerosis. Coronary endothelial function was assessed according to responses to intracoronary acetylcholine in 120 patients ...
Shamloo Behrooz K - - 2010
BACKGROUND: Spontaneous coronary artery dissection (SCAD) is a rare condition that commonly presents as an acute coronary event in the younger population, especially in females of childbearing age. Generally, there is no consensus on the etiology, prognosis, and treatment of SCAD. METHODS: The Medline database was searched for "spontaneous coronary ...
Chen Hong-wei - - 2010
OBJECTIVE: To retrospectively assess the diagnostic efficacy of dual-source CT angiography (DSCTA) in detecting and grading coronary stenosis. METHODS: Institutional review board approval and informed consent were obtained. One hundred ten patients were performed with both DSCTA and conventional coronary angiography (CCA) without heart rate or rhythm control in 1 ...
Gloekler Steffen - - 2010
Diagnostic coronary balloon occlusion (CBO) is mandatory for collateral function assessment, during angioscopy and optical coherence imaging, and when using certain coronary protection devices against emboli. Thus far, the safety of diagnostic CBO regarding procedural and long-term complications in normal coronary arteries has not been studied. In 316 patients, diagnostic ...
Lee Hye-Jeong - - 2011
The objective of our study was to investigate the diagnostic accuracy of computed tomographic coronary angiography for the selection of candidates for coronary artery bypass graft surgery. Institutional review board approval was obtained. We included 172 patients (mean age, 63 years; 127 men and 45 women) with a suspicion of coronary ...
Carrascosa Patricia - - 2010
To assess the feasibility of gadolinium-enhanced 64-slice cardiac CT (CCT) for the diagnosis of obstructive coronary artery disease. Comparative prospective study. Outpatient Imaging Diagnostic Centre, Diagnóstico Maipú, Buenos Aires, Argentina. Twenty patients with suspected coronary artery disease. Gadolinium-enhanced 64-slice CCT was performed before invasive coronary angiography (ICA). The feasibility of ...
Wang Xiao - - 2010
Coronary slow flow phenomenon (CSFP) is an important, angiographic entity characterized by delayed progression of the contrast medium injected into the coronary tree. Since definition of this phenomenon in 1972, there has not been any clear-cut etiology. Original data often focused on histological or pathological changes in coronary artery itself. ...
Yang Shan - - 2010
BACKGROUND: The abnormalities of coronary arteries, though rare and sometimes benign, may first present clinically as myocardial infarction or sudden death. Multi-detector computed tomography (MDCT) is a non-invasive test that is highly suitable for detecting these anomalies. The study aimed to review the 64-MDCT appearance of the coronary artery anomalies ...
Bastarrika Gorka - - 2010
RATIONALE AND OBJECTIVES: The aim of this study was to compare the reproducibility of bidimensional and volumetric quantification of epicardial adipose tissue (EAT) on cardiac computed tomography (CT) and evaluate their relationship with the extent of coronary artery disease (CAD). MATERIALS AND METHODS: Forty-five individuals underwent cardiac dual-source CT and ...
Hansis Eberhard - - 2010
PURPOSE: Three-dimensional (3-D) reconstruction of the coronary arteries during a cardiac catheter-based intervention can be performed from a C-arm based rotational x-ray angiography sequence. It can support the diagnosis of coronary artery disease, treatment planning, and intervention guidance. 3-D reconstruction also enables quantitative vessel analysis, including vessel dynamics from a ...
Jin Hang - - 2010
OBJECTIVE: The purpose of our study was to assess the impact of sublingual nitroglycerin (NTG) spray on free-breathing 3D whole-heart coronary MR angiography (MRA). SUBJECTS AND METHODS: We compared the timing parameters; measured the lumen diameter of the major coronary arteries; calculated coronary vasodilation, apparent signal-to-noise ratio (SNR), and apparent ...
Hertle Daniel N - - 2010
The first commercially produced adjustable valve for shunted hydrocephalus patients was introduced by H. Portnoy and R. Schulte in 1973. This valve is still in use and known as reversible occlusion or on-off valve. The reversible occlusion valve is mainly used in conjunction with an existing shunt in patients receiving ...
Gaillard E - - 2010
Patients with aortic valve stenosis (AS) may experience angina pectoris even if they have angiographically normal coronary arteries. Angina is associated with a marked increase in the risk of sudden death in AS patients. Only a few in vitro models describing the interaction between the left ventricular and aortic pressures, ...
Richard Conti C - - 2010
After hearing a lecture I gave on chronic stable angina, a friend of mine and fellow cardiologist from Florida, Steven Shang, MD, approached me to discuss the relevance of coronary artery collateral blood flow.
Kanamitsu Hitoshi - - 2010
A coronary artery aneurysm is uncommon and frequently asymptomatic. This report presents a surgical case of a giant coronary artery aneurysm complicated by acute myocardial infarction. A 26-year-old man with sudden chest pain was referred to our hospital. Myocardial infarction was suspected, and emergency coronary angiography was performed. A giant ...
Sachdeva Rajesh - - 2010
Retrograde recannalization of chronic total occlusions has developed as a viable alternative to restore coronary patency. Techniques continue to evolve and complications described. We present a new complication related to equipment developed to improve outcomes via a retrograde approach.
Kim H J - - 2010
The cardiovascular system is a closed-loop system in which billions of vessels interact with each other, and it enables the control of the systemic arterial pressure and varying organ flow through autoregulatory mechanisms. In this study, we describe the development of mathematical models of autoregulatory mechanisms for systemic arterial pressure ...
Prakken Niek H - - 2010
Under 35 years of age, 14% of sudden cardiac death in athletes is caused by a coronary artery anomaly (CAA). Free-breathing 3-dimensional magnetic resonance coronary angiography (3D-MRCA) has the potential to screen for CAA in athletes and non-athletes as an addition to a clinical cardiac MRI protocol. A 360 healthy ...
Red-Horse Kristy - - 2010
Coronary artery disease is the leading cause of death worldwide. Determining the coronary artery developmental program could aid understanding of the disease and lead to new treatments, but many aspects of the process, including their developmental origin, remain obscure. Here we show, using histological and clonal analysis in mice and ...
Volk Kenneth A - - 2010
Exposure of the early-gestation ovine fetus to exogenous glucocorticoids induces changes in postnatal cardiovascular physiology. We sought to characterize coronary artery vascular function in this model by elucidating the contribution of nitric oxide and reactive oxygen species to altered coronary vascular reactivity and examining the proliferative potential of coronary artery ...
Chao Bao-ting - - 2010
BACKGROUND: Doppler color echocardiography is a common method for detecting coronary artery lesions in patients with Kawasaki disease (KD). However, the diagnostic accuracy for the whole coronary artery lesions is limited. The purpose of this study was to compare the diagnostic value of dual-source computed tomography (DSCT) and Doppler color ...
Chiu Yi-Wen - - 2010
Vascular calcification is one of the mechanisms mediating the higher mortality risk associated with the hyperphosphatemia of chronic kidney disease. Though common, and often severe in non-dialyzed proteinuric diabetics, there are no studies on the prognostic significance of coronary artery calcification in early stage type 2 diabetic nephropathy. Here we ...
Brunner Gerd - - 2010
Measurements related to coronary artery calcification (CAC) offer significant predictive value for coronary artery disease (CAD). In current medical practice CAC scoring is a labor-intensive task. The objective of this paper is the development and evaluation of a family of coronary artery region (CAR) models applied to the detection of ...
Oz Ozgur - - 2010
AIM: Coronary slow flow phenomenon (CSFP) is an angiographic finding characterized by delayed distal vessel opacification without any significant epicardial coronary artery disease. Several studies have suggested that CSFP might be a form of atherosclerosis. The present study was aimed to investigate the relationship between CSFP and coronary artery calcification, ...
Khaki Amir Afshin - - 2010
Coronary angiography is one of the most common hospital procedures, though there is limited information on the location and extent of coronary artery blockages other than for predominately White patients. This study examined the location and magnitude of coronary artery blockages in patients admitted to a leading tertiary heart hospital ...
Javadrashid Reza - - 2010
BACKGROUND: Coronary artery calcium score (CCS) is a quantitative assessment of calcifications detectable by multidetector computed tomography (MDCT). AIM: To evaluate diagnostic accuracy of CCS to detect significant stenosis in coronary arteries in symptomatic patients. METHODS: The study population included consecutive symptomatic patients with suspected coronary artery disease (CAD) who ...
Mitsumori Lee M - - 2010
OBJECTIVE: The purpose of this study was to evaluate the use of a triphasic contrast bolus for ECG-gated CT in the assessment of chest pain by measuring vascular luminal attenuation and determining the degree of contrast-related streak artifact. MATERIALS AND METHODS: We reviewed the images from 44 ECG-gated CT examinations ...
Selçoki Yusuf - - 2010
OBJECTIVES: Multislice computed tomography (MSCT) is a promising noninvasive method of detecting coronary artery disease. However, most data have been obtained in selected series of patients. The purpose of this study was to investigate the accuracy of 64-slice CT in consecutive patients with suspected or proven coronary artery disease. STUDY ...
Malagò R - - 2010
Anomalies of the coronary arteries are congenital and in most of the cases asymptomatic, although they may present with severe symptoms such as angina pectoris or cardiac arrest. Multidetector CT coronary angiography (MDCT-CA) permits, through curved multiplanar reconstructions and three-dimensional reformatting, noninvasive visualisation of the coronary tree and its variants ...
Gottlieb Ilan - - 2010
This study was designed to evaluate whether the absence of coronary calcium could rule out >or=50% coronary stenosis or the need for revascularization. The latest American Heart Association guidelines suggest that a calcium score (CS) of zero might exclude the need for coronary angiography among symptomatic patients. A substudy was ...
Metton Olivier - - 2010
To evaluate the impact of coronary patterns with intramural arteries on the outcome of arterial switch operation (ASO) in neonates with transposition of the great arteries (TGA). Between 1987 and 2008, 919 neonates underwent ASO for TGA. Forty-six (5.0%) had intramural coronary arteries. Intramural course involved the left main coronary ...
Lee Hwa Yeon - - 2010
The purpose of this study was to evaluate whether the extent of epicardial adipose tissue (EAT) thickness or the presence of descending thoracic aortic calcification on multi-detector CT (MDCT) can predict the presence of significant coronary artery stenosis in patients with negative coronary artery calcium (CAC). We enrolled 90 patients ...
Song Bong Gun - - 2010
Coronary angiography is the standard method of follow-up for patients with coronary artery bypass grafts, but it is an invasive and costly procedure that is not risk-free. Recently, 64-slice multidetector computed tomography has allowed reliable visualization of coronary artery grafts and their anastomotic status, with high spatial resolution. We describe ...
From Aaron M - - 2010
BACKGROUND: Abnormal cardiac stress imaging findings are not always associated with angiographically significant coronary artery disease. The outcomes of patients with such false-positive findings have not been extensively examined. The aim of this retrospective study was to describe the characteristics and outcomes of patients with abnormal stress echocardiographic findings who ...
Dickerson Jennifer A - - 2010
BACKGROUND: Women consistently have poorer revascularization outcomes and more coronary vascular complications compared to men. This has been attributed to smaller coronary arteries, though limited data exist to support this assumption. HYPOTHESIS: By using volumetric data obtained from multidetector cardiovascular computed tomography (CCT), we sought to determine to what extent ...
Rittger Harald - - 2010
BACKGROUND: Coronary flow reserve (CFR) is defined as the ratio between coronary artery flow during maximal hyperemia and rest. It is considered as a marker for the integrity of the epicardial coronary circulation and the microcirculation. CFR measurement typically requires the introduction of a guide wire into a diseased coronary ...
Laynez-Carnicero Ana - - 2010
INTRODUCTION AND OBJECTIVES: Although the diagnostic accuracy of CT in the non-invasive assessment of coronary arteries and grafts is known to be high, only a few studies have investigated the technique's reliability for the combined assessment of native coronary arteries, grafts, and vessels lying distal to anastomoses. The aim of ...
Govsa Figen - - 2010
OBJECTIVE: Anatomical differences in coronary orifices (CO) are important as they are associated with myocardial ischemia and sudden death. The location of coronary orifices to the aortic valve has been studied since it is a determining point in surgical and radiological attempts. METHODS: The number, position, and shape of the ...
< 5 6 7 8 9 10 11 12 13 14 15 >