Search Results
Results 401 - 450 of 1518
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Imren Y - - 2006
Coronary artery aneurysms may predispose to acute thrombosis, embolisation and myocardial ischaemia or rupture with subsequent tamponade and/or sudden death. The optimal therapy for patients with coronary artery aneurysm is unknown, and controversy persists regarding the use of medical or surgical modalities. There is no doubt that surgical therapy is ...
Wykrzykowska Joanna J - - 2006
Iatrogenic aortocoronary dissection is a rare but devastating complication of percutaneous coronary interventions and cardiac surgery, with a mortality rate up to 35%. Of the type-A dissections in the International Registry of Aortic Dissections (IRAD), 27% were caused by coronary interventions. The mechanism involves an initial dissection in the coronary ...
Takagi Tsutomu - - 2006
To evaluate the usefulness of adenosine triphosphate stress strain imaging for detecting significant coronary artery disease in the left anterior descending coronary artery (LAD), 34 patients underwent coronary flow velocity reserve measurement in the distal LAD and adenosine triphosphate stress strain imaging simultaneously. Time to peak strain (TPS) was measured ...
Sato Yuichi - - 2007
Whole heart coronary magnetic resonance angiography (MRA) was performed in a 57-year-old man with a provisional diagnosis coronary artery aneurysm due to Kawasaki disease. MRA revealed aneurysms in the left anterior descending artery and the left circumflex artery. It also revealed stenosis in the left anterior descending artery and occlusion ...
Gavrielatos Gerasimos - - 2006
Persistent intercoronary communications, forming the so-called open ended coronary circulation pattern, are rare findings of coronary angiography. A case of intercoronary connection between the left anterior descending artery (LAD) and the right coronary artery (RCA), with an obstructive lesion, and no evidence of myocardial infarction is presented. This is an ...
Dogan Sait Mesut - - 2006
We present the case of a patient in anomalous origin of the left anterior descending coronary artery that caused myocardial ischemia and led to positive myocardial scintigraphic results. Coronary angiography showed that the left anterior descending coronary artery arose from the right coronary ostium-an anomaly that has been associated with ...
Aras Dursan - - 2006
Extracardiac collaterals generally from bronchial and internal thoracic arteries to coronary circulation have been described in the literature. In this report, we present a case of 59-year-old male patient with collaterals from the left internal thoracic artery to the left anterior descending artery developed after coronary artery bypass grafting and ...
Turkoglu Sedat - - 2006
We present the case of a 67-year-old female who was admitted to our institution because of anginal chest pain. Selective coronary angiography revealed separate ostial origins of the left anterior descending (LAD) artery and the right coronary artery (RCA) from the right coronary sinus (RCS). The left circumflex (LCx) coronary ...
Loukas Marios - - 2006
Myocardial bridging is recognized as an anatomical variation of the human coronary circulation in which an epicardial artery lies in the myocardium for part of its course. Thus, the vessel is 'bridged' by myocardium. The anterior interventricular branch of the left coronary artery has been reported as the most common ...
Papafaklis Michail I - - 2007
We report for the first time a real three-dimensional reconstruction of the left main coronary artery, left main bifurcation, left anterior descending coronary artery and left circumflex coronary artery using biplane angiography and intravascular ultrasound imaging in a patient with a proximal stenosis in the left anterior descending coronary artery. ...
Iwata Shinichi - - 2006
We evaluated the influence of collateral circulation on a donor left anterior descending artery and an appropriate cut-off value of coronary flow velocity reserve for the diagnosis of significant donor left anterior descending artery stenosis. Measurement of coronary flow velocity reserve by transthoracic Doppler echocardiography provides noninvasive assessment of significant ...
Nakamura Michitsugu - - 2006
Coronary artery fistulas (CAF) are a rare anomaly in which there is communication between a coronary artery and a cardiac chamber or another vascular structure. A giant congenital CAF to the left brachial vein was identified clearly by multidetector computed tomography (MDCT) in an 84-year-old woman who presented with orthopnea ...
Garbade Jens - - 2006
OBJECTIVES: Intraoperative application of thermal coronary angiography based on dynamic infrared imaging leads to useful qualitative information concerning coronary artery bypass graft flow and anatomy. Additional quantitative flow estimation is desirable to detect graft failures. The aim of this study was to develop a heat-transfer model for quantitative flow estimation ...
Chang Hyun H Division of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, - - 2006
Essential thrombocythemia (ET) is a clonal disorder of myeloid stem cells that causes thrombocytosis. As a result, ET can lead to vascular thrombosis and tissue ischemia; the association of coronary artery abnormalities such as myocardial infarction or unstable angina is rare. Here we describe a 45,-year-old male patient with essential ...
Pizzuto Francesco - - 2006
The measurement of collateral flow reserve (CFR; the hyperemic/baseline collateral flow velocity ratio) in patients with chronic total coronary occlusion requires invasive and expensive techniques. Noninvasive transthoracic coronary Doppler echocardiography may be an alternative option. Fifty-one patients with chronic total coronary occlusion were evaluated by transthoracic coronary Doppler echocardiography and ...
Drexler E S - - 2007
Results of comparative tests on pulmonary arteries from untreated Long-Evans rats are presented from three sections of the artery: the trunk, and the right and left main extrapulmonary arteries. Analyses were conducted looking for mechanical differences between the flow (longitudinal) and circumferential directions, between the right and left main arteries, ...
Szpinda M - - 2006
The anterior tibial artery is of great clinical relevance to vascular infrapopliteal surgery. The sources (origins), length and luminal diameter of the anterior tibial artery in 46 men and 30 women with Lerich syndrome were studied by means of radiological and digital methods. The results obtained were described by two-way ...
Kosar Feridun - - 2006
Coronary artery anomaly has been reported at a rate of 0.6% to 1.3% in routine angiographic series. Moreover, single coronary artery is one of the rarest anomalies among coronary anomalies. Eventhough patients with coronary anomalies are usually asymptomatic, they may also be associated with myocardial ischemia, ventricular fibrillation, syncope, congestive ...
Rasche Volker - - 2006
RATIONALE AND OBJECTIVES: Three-dimensional high-spatial-resolution angiograms of the coronary arteries were acquired with an electrocardiogram-gated three-dimensional rotational angiography technique on an interventional X-ray system. MATERIALS AND METHODS: During selective injection of contrast material in the left and right coronary artery, projection images were obtained in eight pigs during a continuous ...
Tanriverdi Halil - - 2006
Coronary artery fistula is a rare heart defect found in approximately 0.2% of the adult population undergoing coronary angiography. The diagnosis is usually made by aortography and selective coronary angiography. We report here an adult patient with rheumatic mitral stenosis and left anterior descending coronary artery and pulmonary conus branch ...
Vassiliades Thomas A TA - - 2006
OBJECTIVE: We sought to demonstrate the safety and feasibility of an integrated coronary revascularization strategy that combines minimally invasive left internal thoracic artery to left anterior descending coronary artery anastomosis with drug-eluting stent implantation to non-left anterior descending coronary artery lesions. METHODS: Over 18 months, 47 consecutive patients with multivessel ...
Frey Bret W - - 2006
We describe the case of a 38-year-old woman who presented with a chief complaint of chest heaviness approximately 2 weeks postpartum. She was otherwise healthy with no cardiac risk factors. Coronary angiography revealed a spiral dissection of the left main coronary artery that extended to the left anterior descending coronary ...
Jiménez-Navarro Manuel F - - 2006
BACKGROUND: Calculation of myocardial fractional flow reserve (FFR) enables coronary stenoses to be evaluated. OBJECTIVES: We determined the usefulness of measuring the FFR in multivessel coronary artery disease, reflected in changes in the therapeutic options for patients with moderate coronary stenosis. METHODS: We studied 38 patients (30 men, 8 women; ...
Funabashi Nobusada - - 2007
PURPOSE: To exclusively enhance the left side of the heart by a small amount of contrast material (CM) using rapid acquisition of multislice computed tomography (MSCT) with a 64-data acquisition system (DAS). MATERIALS AND METHODS: Forty consecutive subjects underwent MSCT (Light Speed VCT, GE) with 0.625mm slice thickness to evaluate ...
Satran Aaron - - 2006
We describe a 41-year-old woman with no cardiac risk factors, typical exertional angina and an abnormal noninvasive stress test. Coronary angiography demonstrated an ambiguous left main coronary artery (LMCA) stenosis. Intravascular ultrasound (IVUS) demonstrated no atheroma, but the minimum lumen diameter and area of the ostial LMCA were significantly reduced. ...
Udyavar Ameya R - - 2006
Patients with concomitant carotid and left main or left main equivalent coronary artery disease are at high risk of both cardiac and cerebrovascular complications when they undergo revascularization procedures. Here, we present case reports of three patients who successfully underwent elective carotid stenting prior to coronary artery bypass surgery. Any ...
Ishizawa Akimitsu - - 2006
In dissection courses conducted from 1999 through to 2003, five specimens were found to have coronary arteries with variant roots and branches, as follows: in specimens 1-4, roots of the right coronary artery (RCA) and right conus branch arose independently from the right aortic sinus (RAS); in specimen 5, the ...
Botman Cornelis J - - 2006
BACKGROUND: Direct surgical angioplasty of the left main coronary artery is aimed to restore a more physiologic flow of the left coronary artery compared with conventional coronary artery bypass graft surgery and allows subsequent percutaneous coronary interventions of more distal coronary lesions if necessary. Relatively little data are known about ...
Shechter Guy - - 2006
This paper presents measurements of three-dimensional (3-D) displacements and velocities of the coronary arteries due to the myocardial beating motion and due to breathing. Data were acquired by reconstructing the coronary arteries and their motion from biplane angiograms in 10 patients. A parametric motion model was used to separate the ...
Liu Ju-Chi - - 2006
A 78-year-old woman presented with acute myocardial infarction, anterior wall, Killip III, with congestive heart failure. The finding of coronary angiographic examination was multiple congenital coronary artery fistulas with a huge aneurysm, with fistulas originating from both the right coronary artery and left anterior descending artery. The patient received surgery ...
Anania A - - 2006
Since the advent of coronary angiography, coronary artery aneurysm has been diagnosed with increased frequency. The etiology of coronary artery aneurysm is atherosclerosis in 50%, followed by other causes. In a 71-year-old man with previously documented abdominal aortic aneurysm of 6 cm diameter and ectasia of both left and right ...
Theunissen Thomas - - 2006
A 71-yr-old male was scheduled for infrarenal abdominal aortic aneurysm repair. Although he had only minor clinical predictors for increased perioperative cardiovascular risk with >4 estimated metabolic equivalents for activities, intraoperative transesophageal echocardiography revealed an abnormal maximal-to-prestenotic blood flow velocity ratio in the left main coronary artery. Postoperatively, a severe ...
De Marchi Stefano F - - 2006
Infarct size (IS) increases with vascular occlusion time, area at risk for infarction, lack of collateral supply, absence of preconditioning, and myocardial demand for O2 supply. ECG S-T segment elevation is used as a measure of severity of ischemia and a surrogate for IS. This study in 50 patients with ...
Braun Martin U - - 2006
A single coronary artery is a rare congenital anomaly with an incidence of 0.02-0.04%. We report on a 65-year-old male presenting with atypical chest pain and a history of hypertension and hypercholesterinemia, having diagnosed a very rare variant of a single coronary artery arising from the right sinus of Valsalva ...
Langialonga Tommaso - - 2006
Clinical symptoms of acute or chronic myocardial ischemia due to congenital coronary anomalies occasionally develop during adult life. While several types of coronary anomalies have been already reported, origin of the coronary arteries outside of the ascending aorta and pulmonary trunk is exceedingly rare, and has indeed been described to ...
Tsutsui Jeane M - - 2006
The diagnosis of coronary aneurysms has already been described using transthoracic and transesophageal echocardiography. In the present report we demonstrated the use of real-time three-dimensional echocardiography for the diagnosis of a large left circumflex coronary aneurysm. The improved spatial resolution of this new imaging technique provided valuable information for anatomic ...
Kelle Sebastian - - 2006
A myocardial muscle bridge spans a segment of a major epicardial coronary artery that is located in the myocardium. This anatomic configuration can be responsible for angina pectoris, arrhythmias or even death. The current reference standard for diagnosis is conventional x-ray coronary angiography showing systolic compression of an epicardial vessel ...
Aoyagi Shigeaki - - 2006
A 27-year-old woman, who had received mitral valve repair for mitral regurgitation resulting from infective endocarditis, was admitted for a close examination of abnormal echocardiographic findings in the left atrium. Transthoracic echocardiography showed trivial mitral regurgitation with normal left ventricular contraction and dilatation of the coronary sinus. Auscultation revealed a ...
Porzionato Andrea - - 2006
Coronary angiography was performed in a 43-year-old man admitted to hospital for chest pain. The first frames after the injection of contrast medium showed plaque in the left main coronary artery and subtotal stenosis of the mid-left anterior descending coronary artery. Dissection of the left main coronary artery appeared, with ...
Plass André - - 2006
BACKGROUND: Invasive coronary angiography (ICA) is the gold standard for the diagnosis of coronary artery disease and also for imaging procedures for preoperative planning of coronary artery bypass grafting (CABG). Sixteen-multidetector row computed tomography (MDCT) represents an alternative depiction of coronary vessels. METHODS: Preoperative exams included ICA and MDCT in ...
Ikeda Nobutaka - - 2006
We present the case of a 70-year-old woman who was admitted to our hospital with heart failure due to a giant left ventricular aneurysm involving the apex and severe mitral regurgitation. Three months before the hospitalization, percutaneous coronary intervention was performed for severe stenosis of the left main trunk. During ...
Us Melih Hulusi - - 2006
From January 2002 through June 2004, 17 patients (2% of all coronary cases) were treated with off-pump coronary artery bypass grafting combined with percutaneous coronary intervention. There were 13 men and 4 women, whose ages ranged from 54 to 78 years (mean, 63.1 +/- 20.9 yr). Preoperative angiography revealed 2-vessel ...
Lima Brian - - 2006
Aneurysms of the left main coronary artery are exceedingly rare clinical entities, encountered incidentally in approximately 0.1% of patients who undergo routine angiography. Thrombosis within the aneurysm can lead to distal embolization and myocardial infarction. These lesions can extend into adjacent coronary branches and can occur in the presence or ...
Marinos Thomas - - 2006
Bronchopulmonary sequestrations are usually supplied by single or multiple branches from the descending aorta. We report on a rare form of sequestration of a hypoplastic mid-pulmonary lobe with arterial supply from the circumflex coronary artery coincidentally discovered during coronary angiography in a female patient with coronary artery disease and a ...
Akgul Ferit - - 2006
Left main coronary artery dissection occurs very rarely during selective coronary angiography, but it generally progresses to complete coronary occlusion. The traditional treatment of occlusive dissection of the unprotected left main coronary artery has been surgical. Percutaneous treatment has been sporadic and controversial. We report a case of iatrogenic occlusive ...
Onady Gary M - - 2006
Persistent dyspnea is a common finding in the cystic fibrosis patient that typically leads to further work up of an alternative pulmonary etiology. Adult cystic fibrosis patients; however, are growing in numbers and they are living into the ages in which coronary artery disease becomes prevalent. Coronary disease should be ...
Meimoun Patrick - - 2005
BACKGROUND: The physiologic significance of left anterior descending coronary artery (LAD) stenosis of intermediate angiographic severity is of clinical importance and difficult to assess. Assessment of coronary flow reserve (CFR) by Doppler transthoracic echocardiography (TTE) is a new tool and could allow rapid, noninvasive evaluation of stenosis severity in this ...
Tuncer Cemal - - 2006
Coronary artery aneurysm, especially left main coronary artery (LMCA) aneurysm is a rare phenomenon. The disease may be congenital or acquired. The most common cause of coronary artery aneurysm is atherosclerosis. We presented a man with a large LMCA aneurysm presenting with unstable angina, transient ischemic attack, ventricular tachycardia and ...
Schmid Michael - - 2006
BACKGROUND: We investigated the potential of 16-slice multi-detector row spiral CT (MDCT) with retrospective ECG-gating for evaluation of coronary artery anomalies. METHODS: A total of 35 patients (23 men, 12 women, 19-81 years) in whom anomalous coronary arteries had been detected by invasive coronary angiography underwent MDCT (Sensation 16, Siemens, ...
Villines Todd C - - 2005
Coronary artery aneurysms are uncommon, usually associated with atherosclerosis and rarely involve all 3 main coronary arteries. Sudden death from documented thrombosis within large coronary aneurysms has been rarely reported. The authors report a case of a previously healthy 36-year-old male who presented with myocardial infarction complicated by sudden cardiac ...
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