Search Results
Results 351 - 400 of 1519
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Tuncer Cemal - - 2008
A 52-year old woman developed inferior ST elevation myocardial infarction and was found to have both an anomalous left coronary artery originating from the right sinus of Valsalva, and total atherosclerotic occlusion of the proximal right coronary artery. Coronary angiography showed the torsion of left main coronary artery. Multislice computed ...
Raisky Olivier - - 2007
OBJECTIVE: To evaluate the results of surgical revascularization in children with coronary artery lesions following neonatal arterial switch operation (ASO). METHODS: Among 755 neonates who underwent ASO, there were 713 late survivors (94%). Coronary lesions were detected in 34 patients (5%). Coronary revascularization was carried out in 19 children (mean ...
Aziz Omer - - 2007
To compare outcomes between minimally invasive left internal thoracic artery bypass and percutaneous coronary artery stenting as primary interventions for isolated lesions of the left anterior descending artery. Meta-analysis of randomised and non-randomised comparative peer reviewed publications. Embase, Medline, Cochrane, Google Scholar, and Health Technology Assessment databases (1966-2005). Studies comparing ...
Stephen Thomas - - 2007
Anomalous origin of the left anterior descending coronary artery with associated congenital defects is very rare. An angiogram of a 47-year-old woman admitted for a ventricular septal defect closure revealed an anomalous left anterior descending coronary artery arising from the left posterior sinus of the pulmonary artery. During the surgical ...
El-Menyar Ayman A - - 2007
Patients with stenosis of the left main coronary artery present difficult challenges. The risks associated with this lesion have been known since the early days of angiography when patients were found to have increased mortality during follow-up. This information led to the general guidelines that surgical revascularization should be considered ...
Gauthier Nadine - - 2007
Coronary artery bypass surgery is the currently accepted treatment for unprotected left main coronary artery disease. Currently, the data supporting the safety and efficacy of stents for unprotected left main coronary disease are derived mostly from nonrandomized, single-center studies or registries. These results appear promising but large randomized trials are ...
Funabashi Nobusada - - 2007
We report our experience with 256-slice cone-beam computed tomography following selective coronary arterial bolus injection in pigs, which distinguished the segmented left ventricular (LV) myocardium supplied by each coronary artery into three parts more clearly than with other modalities. Two pigs were anesthetized and catheters positioned in the left anterior ...
Shiga Yuhei - - 2008
Congenital coronary artery fistula (CAF) is an infrequent vascular anomaly that establishes a direct link between an epicardial coronary artery and a cardiac chamber, major vessels, or other vascular structures. In this case there was an aneurysmal-CAF between a left main trunk and the right atrium, which was initially diagnosed ...
Cheon Won Seok - - 2007
Coronary artery fistula is an uncommon congenital malformation that generally drains into the main pulmonary artery or the right side of the heart. This is a case report on bilateral coronary artery fistulas communicating with the main pulmonary artery and the left ventricle. A 65-year-old woman was investigated for recurrent ...
Botman Cornelis J - - 2007
BACKGROUND: Direct surgical angioplasty of the left main coronary artery is aimed to restore a more physiologic blood flow through the left main coronary artery compared with conventional bypass surgery and allows subsequent percutaneous coronary interventions of more distal coronary lesions. Some data on anatomic evaluation with coronary angiography and ...
Saito Hidenori - - 2007
Spontaneous simultaneous multivessel coronary artery spasm in patients with acute myocardial infarction (AMI) is uncommon. A 79-year-old Japanese man was transferred to this hospital because of severe prolonged chest pain and faintness. Left coronary angiography revealed total occlusion of the left anterior descending and the left circumflex coronary arteries. Moreover, ...
Noestelthaller A - - 2007
As many investigators use dogs as experimental models in catheterization-, ligation-, and collateral flow studies, knowledge and awareness of the canine left coronary artery anatomical variation is vital for differentiation between canine and human coronary arterial patterns and canine and human coronary congenital anomalies with or without circulatory importance. The ...
Bitigen Atila - - 2007
Double left anterior descending coronary artery arising from the left and right coronary arteries is a very rare congenital coronary artery anomaly. In this case, there was also a circumflex artery arising from the right sinus Valsalva and in association with severe rheumatic valve disease. Subsequently, the patient underwent mechanical ...
Said Salah A M - - 2007
A 39-year-old diabetic patient with an old inferior wall infarction presented with disabling angina pectoris, despite medical treatment. Coronary angiography showed severe triple-vessel coronary artery disease, and bilateral coronary to pulmonary fistulas originating from the right coronary artery and the left anterior descending coronary artery. Both coronary artery saphenous vein ...
Chen Jack P - - 2007
Coronary angiography (Figure-1) and computerized tomographic angiography (CTA) (Figure-2) of a 61-year-old man with exertional angina demonstrated proximal compression by the great vessels of an anomalous right coronary arising from the left main trunk. A significant left anterior descending lesion was also present. The patient underwent uneventful bypass surgery. CTA ...
Nemes Attila - - 2007
BACKGROUND: Atherosclerosis is a generalized disease of the arterial vasculature; among thus it manifests in the descending aorta and the coronary arteries. We tested whether known risk factors, the coronary flow velocity reserve and the grade of aortic atherosclerosis detected by transoesophageal echocardiography in the course of the same semi-invasive ...
Kasliwal Ravi R - - 2007
BACKGROUND: Previous studies have shown that carotid intima-media thickness correlates well with the presence and extent of coronary artery disease. This study was conducted to determine whether it could reliably predict the presence of left main coronary artery disease. METHODS: Common carotid intima-media thickness was measured in 50 patients with ...
Frackowiak H - - 2007
A study of the coronary arteries of the roe deer heart was performed on 21 hearts of animals of both sexes and various ages. The roe deer heart is supplied by two arteries: the left coronary artery and the right coronary artery. The left coronary artery arises from the left ...
Ambrose Jay - - 2007
"No-reflow" complicates 10% to 15% of saphenous vein graft (SVG) percutaneous coronary interventions (PCIs). It is suggested by some studies to be the cause of a 31% rate of acute myocardial infarction and may increase in-hospital mortality 10-fold. A 73-year-old white male with a history of coronary artery bypass surgery, ...
Auriti Antonio - - 2007
BACKGROUND: Coronary flow reserve (CFR) recording by means of transthoracic echocardiography (TTDE) in all the main distal coronary arteries is a challenge for advanced echocardiography. Validation studies of TTDE versus Doppler-wire (DW) recordings are available for Left Anterior Descending artery (LAD) and the Posterior Descending coronary artery (PD), but lacking ...
Quatrini Ilaria - - 2007
BACKGROUND: Coronary artery fistulas are rare congenital or acquired coronary artery anomalies that can originate from any of the three major coronary arteries and drain in all the cardiac chambers and great vessels. CASE PRESENTATION: An 11-year-old boy was referred for evaluation of an exertional dyspnoea. He reported recent history ...
Movahed Mohammad-Reza - - 2007
The author presents a patient with chronic total occlusion of the right coronary artery with a large lumen communication to the distal left anterior descending artery as a single conduit. The diameter of this connection was very large and equaled the distal left anterior descending artery diameter. The unusual finding ...
Hadjimiltiades Stavros - - 2007
An abnormal communication between an artery of the systemic circulation and a pulmonary artery represents a rare clinical condition. A 76-year-old man presented with nocturnal dyspnea and retrosternal pain caused by a non-ST-elevation acute coronary syndrome. He had a history of a coronary artery bypass grafting operation 17 years previously, ...
Shirodaria Cheerag - - 2007
BACKGROUND: Intramural coronary haematoma following percutaneous coronary intervention in the absence of coronary dissection is a rare phenomenon. CASE PRESENTATION: A 69 year old lady with previous prosthetic aortic valve replacement underwent percutaneous coronary intervention (PCI) from the left mainstem to the left anterior descending artery (LAD) and kissing balloon ...
Sanford Garrett B - - 2007
We report the case of a 32-year-old man who presented at the emergency department with severe chest pressure, left arm pain, and dizziness. These symptoms were described as intermittent, occurring after exercise and at rest. He had undergone several stress tests during the past 8 years, but no objective evidence ...
Kumar G Venkata Ramana - - 2007
Takayasu's arteritis with coronary artery involvement is rare, and there is little published information on the subject. Coronary angiographic and histopathologic studies have revealed coronary artery lesions in 9% to 11% of cases. Coronary artery involvement consists mostly of stenosis or occlusion of the coronary ostia. We report the case ...
Kaul Pankaj - - 2007
A single left coronary artery with right coronary artery arising from either left main stem (LMS) or left anterior descending artery (LAD) or circumflex artery (Cx) is an extremely rare coronary anomaly. This is the first report of separate origins of proximal and distal RCA from LAD and circumflex arteries ...
Giugliano Gregory R - - 2007
Friedreich's ataxia is the most common hereditary neurodegenerative disorder, and more than half of all patients show echocardiographic evidence of cardiomyopathy. Although angina has been reported in these patients, the role of coronary artery disease has previously been dismissed and is therefore underestimated. Premature obstructive coronary disease has rarely been ...
Javangula Kalyana - - 2007
We describe, in a 61 year old man, with coexistent aortic stenosis, the anomalous origin of posterior descending artery (PDA) from a stenotic left anterior descending (LAD) artery, as its continuation across the left ventricular apex, in the presence of a normally arising and atretic proximal right coronary artery. The ...
Korach Amit - - 2006
Anomalous origin of the left main coronary from the pulmonary trunk in an elderly patient is extremely rare. We report a 73-year-old woman who presented with new onset of angina and atrial fibrillation. Evaluation revealed anomalous origin of the left main coronary artery from the main pulmonary artery and tight ...
Verhoye Jean-Philippe - - 2007
OBJECTIVE: Preoperative measurements of collateral blood flow in patients with triple vessel disease and chronic occlusions of the right coronary artery do not, currently, ascertain the need to revascularise an occluded right coronary artery. We performed direct measurements of flow across left coronary bypass grafts to determine their contributions to ...
Okmen Arda Sanli - - 2007
Coronary artery aneurysm is defined as coronary dilatation, which exceeds the diameter of normal adjacent segment or the diameter of the patient's largest coronary vessel by 1.5 times [Syed M, Lesch M: Coronary artery aneurysms: a review. Prog Cardiovasc Dis 1997; 40:77-10 84 [1]]. Most studies show an incidence of ...
Lanjewar Charan - - 2007
Aortoarteritis presenting with isolated bilateral coronary artery ostial stenosis is a serious but rare condition. This letter emphasizes on a very atypical presentation of aortoarteritis and also distinct but unusual form of angiographic findings involving total occlusion of left main coronary artery from the ostium and tight ostial right coronary ...
Ariyarajah Vignendra - - 2007
Interatrial block (IAB), denoted by P waves > or =110 ms, is believed to be associated with underlying ischemia, particularly with that of its principal interatrial conduction pathway, the Bachmann bundle. We investigated if there is an angiographic association of IAB on electrocardiograms at rest in patients who underwent cardiac ...
Watanabe Toshiki - - 2006
OBJECTIVE: This study aimed to evaluate our newly developed 3-dimensional digital motion-capture and reconstruction system in an animal experiment setting and to characterize quantitatively the three regional cardiac surface motions, in the left anterior descending artery, right coronary artery, and left circumflex artery, before and after stabilization using a stabilizer. ...
Bouchot Olivier - - 2006
OBJECTIVE: The aim of this study was to assess the efficacy of the novel reversible thermosensitive gel poloxamer 407 for occlusion of the coronary vessel necessary for minimally invasive operations and its effects on coronary endothelium. METHODS: Domestic swine were submitted to occlusion of the left anterior descending or right ...
Fuzellier Jean-François - - 2006
Mediastinal irradiation can induce coronary artery disease characterized by the localization of lesions at the proximal segment of the arteries. We report the case of a 17-year-old patient who underwent a mediastinal irradiation for pulmonary sarcoma and developed 15 years later an asymptomatic ischemic cardiopathy. Bilateral coronary ostial stenosis was ...
de Man Karen - - 2006
Acute occlusion of the left main coronary artery frequently causes cardiogenic shock and, when this occurs with an initial TIMI 0 flow, has an extremely poor prognosis. The use of a bifurcation system has not been described previously in this situation but has advantages that may result in a simpler ...
Pérez-Sanz Teresa M - - 2006
We report a case of a patient who was admitted to our hospital complaining of angina pectoris. On auscultation, a systolic ejection murmur was heard at the right upper sternal border. Transthoracic echocardiography displayed regional wall motion abnormalities and detected a mobile mass in the left ventricular outflow tract, causing ...
Kacila Mirsad - - 2006
Coronary artery aneurysms (CAAs) are rare and their management is controversial. Their incidence varies from 1,5% to 5% of the coronary angiographies, with predilection of the right coronary artery. Unruptured coronary aneurysms are often silent and may remain undiagnosed. The etiology can be either congenital or acquired. We describe a ...
Kosar Feridun - - 2006
Double left anterior descending coronary artery originating from the left and right coronaries is an extremely rare coronary artery anomaly. In the present report, an unusual case with double left anterior descending coronary artery arising from the left and right coronary arteries is described. To our knowledge, only a few ...
Muto Mitsuru - - 2006
OBJECTIVES: The purpose of this study is to assess the effect of beta1-selective blocker on coronary vasospasm. MATERIALS AND METHODS: Balloon epicardial coronary artery endothelial denudation was performed at the left anterior descending coronary artery every 2 weeks for a total of 4 times in pigs. Changes in denuded site ...
Pflederer Tobias - - 2006
OBJECTIVE: Optimal stent deployment in coronary artery bifurcations requires information about the angle between main vessel and side branch. We evaluated the accuracy and interobserver variability of bifurcation angle measurements by contrast-enhanced 16-slice multidetector computed tomography (MDCT) in comparison with invasive angiography and examined the average angles of 4 main ...
Momen Afsana - - 2007
In animal studies, sympathetically mediated coronary vasoconstriction has been demonstrated during exercise. Human studies examining coronary artery dynamics during exercise are technically difficult to perform. Recently, noninvasive transthoracic Duplex ultrasound studies demonstrated that 1) patients with left internal mammary artery (LIMA) grafts to the left anterior descending artery can be ...
Meraj Perwaiz M - - 2007
Coronary artery aneurysm is an uncommon finding. It is defined as a dilated coronary artery which exceeds the diameter of the normal adjacent vessel by 1.5-2 times. Although theorized mechanisms include atherosclerotic coronary artery disease (CAD) and iatrogenic causes such as the use of percutaneous coronary interventions (PCI), the natural ...
Greig Lynn D - - 2007
A 31-year-old female smoker on the combined oral contraceptive pill presented late with an anterior myocardial infarction. At emergency coronary angiography she was found to have a coronary artery thrombus occluding the left anterior descending artery, with no other coronary artery disease. Subsequent saline bubble contrast echocardiography revealed a patent ...
Tuncer Cemal - - 2006
OBJECTIVES: To present the clinical and angiographic properties of the left anterior descending artery anomalies. BACKGROUND: Coronary artery anomalies are discovered in less than 1% of angiography series. Since the number of angiographies and coronary bypass operations are increasing significantly every day, these anomalies are of clinical importance. However, data ...
Clauss Sarah B - - 2006
Abnormal patterning of coronary arteries (CAs) is a clinically significant problem, and as yet, few animal models have been systematically investigated for coronary patterning defects. Here we characterized coronary artery (CA) insertion and branching patterns of the proximal coronary stems in the hearts of wildtype and heterozygous connexin43 knockout (Cx43alpha1 ...
Chatzizisis Yiannis S - - 2006
OBJECTIVE: The geometrically correct three-dimensional reconstruction of human coronary arteries by integrating intravascular ultrasound (IVUS) and biplane angiography constitutes a promising imaging method for coronaries with broad clinical potential. The determinants of the accuracy of the method, however, have not been investigated before. METHODS: In total, 17 arterial segments (right ...
Arteaga Roque B - - 2006
Single coronary ostium is a very rare congenital anomaly with an incidence of 0.024% in angiographic series. This is the third case of Shirani-Roberts subtype IB4: solitary ostium in the left coronary sinus associated with a retroaortic-coursing right coronary artery that arises from the left main coronary artery. The patient ...
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