Search Results
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Takeuchi Masaaki - - 2004
BACKGROUND: Although the measurement of coronary flow velocity (CFV) reserve (CFVR) in the left anterior descending coronary artery (LAD) by transthoracic Doppler echocardiography has been established, its success rate in the posterior descending coronary artery (PD) is still limited. OBJECTIVE: This study reports the feasibility and diagnostic accuracy of measuring ...
Malyshev Michael - - 2004
OBJECTIVES: There are controversial opinions about the expediency of performance of the surgical angioplasty of the left main coronary artery (LMCA) and/or proximal segment of the right coronary artery (RCA) in rare cases of isolated lesion or with limited involving of distal coronary branches. One of the many fears restraining ...
Aydin Mustafa - - 2004
We present the case of a patient in whom a previously undetected anomalous origin of the circumflex coronary artery caused myocardial ischemia and led to positive myocardial scintigraphic results. Subsequent coronary angiography showed that the left circumflex coronary artery arose from the right coronary ostium-an anomaly that has been associated ...
Yang Haoyi - - 2004
To examine the role of nitric oxide in the beta-adrenergic vasodilation of epicardial coronary arteries in dogs, 12 dogs were instrumented for measurement of left anterior descending coronary artery diameter by transthoracic echocardiography before and after dobutamine (5 microg/kg/min IV) with and without intracoronary infusion of NG-monomethyl-L-arginine (L-NMMA) (1 mg/kg). ...
Gowda Ramesh M - - 2004
Coronary anomalies are divergent and can occur in up to 1% to 2% of patients. The most common of these anomalies is separate ostia of the left anterior descending and left circumflex arteries, followed by origin of the circumflex coronary artery from the right coronary artery and the left coronary ...
Box Lyndon C - - 2004
Coronary emboli are rare but devastating events. We present the case of a 31-year-old woman with peripartum cardiomyopathy and mural thrombus. She was admitted with an acute, non-ST elevation myocardial infarction. Two emboli were seen on the coronary angiogram: one in the left anterior descending coronary artery and a second ...
Kiviniemi Tuomas O - - 2004
We studied whether diameters of coronary arteries can be measured accurately with the use of transthoracic echocardiography (TTE). By knowing the anatomic diameter of the coronary artery together with coronary flow velocity it is possible to measure coronary flow volume more precisely by TTE. However, the suitability of TTE for ...
Jönsson A - - 2003
Angiographies of 384 patients who had coronary artery bypass surgery because of left main coronary artery (LMCA) obstruction during 1970-1989 were reviewed by analysing the pathology, feasibility of surgical angioplasty and survival. Complete LMCA occlusion was found in 2%, proximal ostial stenosis in 9%, mid-shaft stenosis in 24%, circular stenosis ...
Weber Oliver M - - 2003
Current implementations of coronary artery magnetic resonance angiography (MRA) suffer from limited coverage of the coronary arterial system. Whole-heart coronary MRA was implemented based on a free-breathing steady-state free-precession (SSFP) technique with magnetization preparation. The technique was compared to a similar implementation of conventional, thin-slab coronary MRA in 12 normal ...
Ferencik Maros - - 2003
Multidetector computed tomography (MDCT) permits visualization of the coronary arteries, but limited spatial and temporal resolution can lead to artifacts. We quantitatively evaluated the image quality that can be obtained with the latest generation of MDCT scanners with submillimeter collimation and increased gantry rotation speed. Thirty patients with angiographically proved ...
Gatzov Plamen - - 2003
To understand the influence of collateral vessels on the coronary flow, TIMI frame count (TFC) method was applied as a measure of mean coronary blood flow velocity in artery giving collateral blood supply to the other artery in angiograms of 76 patients with single occluded coronary artery: RCA giving collaterals ...
Voci Paolo - - 2003
Transthoracic coronary Doppler ultrasound during venous adenosine infusion showed damped (<1) coronary flow velocity reserve in patients with severe left anterior descending coronary artery stenosis. Damped coronary flow reserve discriminated severe from nonsevere stenosis with high sensitivity, specificity, and positive predictive accuracy, and is a unique noninvasive tool to identify ...
Cademartiri Filippo - - 2003
PURPOSE: To test the added information of a retrospective ECG-gating to the 16-row Multislice Computed Tomography (MSCT) scan of intrathoracic vessels. MATERIALS AND METHODS: Ninety-six patients (61 males, aged 59 +/- 20 years) underwent MSCT with a 16-row scanner (Sensation 16, Siemens, Germany) for the study of the thoracic vessels. ...
Cingoz Faruk - - 2003
Several types of left anterior descending artery anomalies have been detected. In these anomalies, left anterior descending artery usually originates from the right coronary artery or right sinus of Valsalva. A case of left anterior descending artery arising as a terminal extension of posterior descending artery presented. This anomaly seems ...
Shimizu T - - 2003
A 78-year-old man had a descending thoracic aortic aneurysm with left main coronary artery disease. Combined beating heart coronary artery bypass and endovascular thoracic aortic aneurysm repair was performed without cardiopulmonary bypass. The left anterior descending artery and the obtuse marginal branch of the left circumflex artery were revascularized through ...
Koju Rajendra - - 2003
The complications, therapy and prognosis are significantly determined by the exact location of occlusion site in left anterior descending (LAD) coronary artery in anterior acute myocardial infarction (AMI). This study assessed the role of Electrocardiogram (ECG) as a predictor of coronary artery occlusion site in anterior AMI. Sixty two patients ...
Katsetos Manny C - - 2003
An isolated single coronary artery can be associated with normal life expectancy; however, patients are at an increased risk of sudden death. A case is reported of a 54-year-old man with several months of chest pressure with activity. On exercise Sestamibi stress testing, the patient developed a hypotensive response with ...
Kardesoglu E - - 2003
The pattern of clinical findings and electrocardiography (ECG) changes known as Wellens' syndrome is associated with significant stenosis of the proximal left anterior descending coronary artery. Cases can be classified according to the ECG pattern into type 1 (biphasic T waves) or type 2 (deeply inverted T waves, especially in ...
Lin Tung-Chun - - 2003
We report a rare case of congenital coronary artery anomaly with recurrent chest pain. A 44-year-old Taiwanese female patient presented with exertional chest pain that had lasted for 2 years. An electrocardiogram showed right axis deviation and an rS pattern in leads I and aVL, and an exercise stress test ...
Ono Minoru - - 2003
Beating-heart coronary artery bypass surgery was performed in a 52-year-old man with accelerated transplant coronary artery disease 10 years after orthotopic heart transplantation. Transplant coronary artery disease was first detected in the left circumflex coronary artery 9 years after transplantation. Rapid progression to triple vessel disease occurred within 1 year, ...
Yoshitatsu Masao - - 2003
OBJECTIVE: We sought to investigate the changes of velocity profiles in the left anterior descending coronary artery after coronary artery bypass grafting using transthoracic Doppler echocardiography. METHODS: Forty-five patients who received a bypass graft to the left anterior descending coronary artery were studied. Before coronary artery bypass grafting, Doppler velocity ...
Thompson Calvin - - 2003
Using case illustrations, to elucidate factors which increase the likelihood of false negative preoperative dobutamine stress echocardiography (DSE) studies in patients with severe left main coronary artery stenosis, and to provide criteria which must be met in order to ensure the accurate interpretation of these tests. Two patients presented for ...
Hirata Nobuaki - - 2003
OBJECTIVES: This study was designed to evaluate anastomotic sites located between the internal thoracic artery and left anterior descending coronary artery using transthoracic Doppler echocardiography, and then to clarify the accuracy of those results by comparison with coronary arteriographic findings. METHODS: We examined 35 consecutive patients who had undergone bypass ...
Hagendorff A - - 2003
The present case will focus on the potential of hypoperfusion detection with myocardial contrast echocardiography (MCE) using power Doppler harmonic imaging (PDHI). PDHI is normally performed in a triggered mode. Microbubbles were destroyed by the ultrasound energy in the myocardium, and myocardium has to be refilled with microbubbles within the ...
Erbay Ali Riza - - 2003
A case of double left anterior descending artery is presented. One originated from the left main stem and the second one originated from the right sinus ofValsalva. This is an extremely rare variety of congenital coronary artery anomaly. By an extensive review of the medical literature, we were able to ...
Konta Tsuyoshi - - 2003
Mechanical stress in coronary arteries has been postulated to cause endothelial injury and atherosclerotic lesions, but the relationship between the pattern of coronary artery movement (CAM) and lesion severity is not known. In the present study CAM was classified into 10 patterns, which were grouped into 3 classes: (1) bend ...
Auriti A - - 2003
AIMS: Recording coronary arteries' flow by transthoracic Doppler echocardiography (TTDE) is a new task. Despite several studies concerning the left anterior descending artery (LAD) exist, the same for posterior descending coronary artery (PD) do not. Reported feasibility is not more than 76%. The aim of the study was to try ...
Krishnamoorthy K M - - 2003
A rare aneurysm of a congenital coronary arteriovenous fistula is reported. Echocardiography showed a dilated left coronary and left circumflex artery with normal left anterior descending artery. A dilated structure near the crux was confirmed to be a large aneurysm of circumflex coronary artery on selective angiography. It drained into ...
Biancari Fausto - - 2003
OBJECTIVE: It is not clear whether the severity of coronary artery disease as assessed on angiography has an impact on the postoperative outcome after coronary artery bypass surgery (CABG). DESIGN: The angiographic status of 15 coronary arteries/segments of 2,233 patients who underwent isolated on-pump CABG was graded according to the ...
Hall Roger - - 2003
A usually very fit man aged 90 presented with syncope and angina of effort. He was found to have severe calcific aortic stenosis and associated coronary disease restricted to the left anterior descending (LAD) coronary artery. He underwent an aortic valve replacement with tissue prosthesis and a single coronary graft ...
Chang Yong-Shun - - 2003
STUDY DESIGN: This is a case report of a left common iliac artery occlusion identified as an intraoperative complication during a planned (combined anterior interbody and posterior fusion) 360 degrees spinal fusion. OBJECTIVE: The purpose of this report was to document the occurrence of this rare complication during a planned ...
Butman Samuel M - - 2003
Percutaneous coronary intervention of unprotected left main coronary arterial disease is an alternative to surgical revascularization in selected patients. In this report, a patient with an implanted left ventricular assist device (LVAD) underwent successful coronary intervention prior to its planned removal. The implanted LVAD clearly assisted the technical performance of ...
Oldenburg Olaf - - 2003
A 55-year-old male with angina-like chest pain and positive thallium-scintigraphy was admitted to our hospital. Cardiac catheterization was performed for suspected coronary artery disease. The coronary angiogram showed no significant epicardial stenosis, but a large coronary fistula, connecting the left anterior descending artery with the pulmonary artery. Swan-Ganz catheter measurements, ...
Gullu Hakan - - 2003
A 52-year-old man, presenting with exertional chest pain was investigated to explain his chest pain. Echocardiographic examination revealed he had the ostium secundum type of atrial septal defect, dilated right heart chambers, dilated pulmonary artery, and pulmonary artery systolic pressure of 65 mm Hg calculated from tricuspid regurgitation, but his ...
Gõssl M - - 2003
Noncoronary vasa vasorum have been described as networks of microvessels in the wall of arteries and veins. However, we have shown, using microcomputerized tomography (micro-CT) imaging methods, that porcine coronary vasa vasorum have a tree-like branching structure similar to the vasculature in general. In this study, we elucidate functional aspects ...
Wolf Randall K - - 2003
OBJECTIVES: To evaluate the safety and effectiveness of a self-closing surgical clip with an interrupted technique in left internal thoracic artery to left anterior descending artery bypass grafting. METHODS: Eighty-two patients were enrolled and treated (February 2000 through August 2001) in a prospective, nonrandomized, multicenter trial. Left internal thoracic artery ...
Kojima Satoshi - - 2003
Cardiac hemangioma is extremely rare. We encountered two patients with cardiac hemangioma detected by thoracic echocardiography during a medical checkup. In the first case, transthoracic echocardiography revealed a pedunculated tumor in the left ventricle. Selective left coronary angiography demonstrated that the main feeding artery of the tumor arose from the ...
Dinckal H - - 2003
We describe a complication after radiofrequency (RF) ablation of a left free wall accessory pathway that resulted in acute occlusion of proximal left anterior descending (LAD) coronary artery in a 32-year-old male non-cocaine abuser. An interesting feature is the site of coronary artery occlusion which is remote from the RF ...
Tamura Kentaro - - 2003
Patients with porcelain aorta carry a high risk of cerebral as well as systemic embolism during cardiac surgery. Here we describe a case of severe aortic stenosis and coronary artery disease combined with the circumferentially calcified aorta. The patient was a 77-year-old man who successfully received four coronary artery bypass ...
Kurisu Satoshi - - 2003
A 74-year-old woman with hypertension and bronchial asthma had chest discomfort at rest and 4 days later was admitted to her nearby hospital because of the sudden onset of right hemiparesis. The hemiparesis had almost disappeared within 24 h of onset, but because an electrocardiogram showed sinus tachycardia and diffuse ...
Nyamu Peter - - 2003
Coronary artery ectasia, a variant of coronary atherosclerosis, is a relatively rare entity. Review of literature did not reveal an exclusive study on isolated ectasia. We decided to analyse the clinical presentation and angiographic prevalence of this subset. A retrospective study of patients who underwent coronary angiogram in our institute ...
Nagy András - - 2003
Transoesophageal echocardiography (TEE) using colour flow Doppler and intracoronary flow velocity measurements by pulsed Doppler may be helpful in detecting coronary artery disease. We present a case of a middle-aged man in whom left main ostial stenosis was detected by TEE after two non-diagnostic coronary angiographies. The main message of ...
Hsi David H DH Department of Medicine, Park Ridge Hospital, Rochester, NY, - - 2003
We describe a 50-year-old man with a history of hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu disease) who presented with chest pain, atrial fibrillation, and congestive heart failure. Echocardiography revealed a large ascending aortic aneurysm accompanied by severe aortic regurgitation and giant coronary artery aneurysms involving the right, left main, left anterior descending, ...
Elian Dan - - 2003
Left main coronary artery atresia is a very rare coronary anomaly with only 33 cases reported in the literature, of whom only 1 patient is asymptomatic. Pediatric patients are usually very symptomatic early in life (dyspnea, syncope, failure to thrive, ventricular tachycardia, and sudden death), whereas adult patients begin showing ...
Lehmann Günter - - 2003
BACKGROUND: This study was performed to elaborate an electrocardiographic (ECG) algorithm enabling assignment of an occluded coronary artery in acute myocardial infarction (AMI). PATIENTS AND INTERVENTIONS: In 109 patients (age, 59+/-12 years) with AMI (pain onset, 3.6+/-1.7 h), coronary angiography with PTCA/stenting of the culprit lesion was performed. The diagnosis ...
Sato Yuichi - - 2003
The present study was designed to investigate the accuracy of multislice spiral computed tomography (MSCT) in detecting coronary artery disease, compared with coronary angiography (CAG), using a new retrospectively ECG-gated reconstruction method that reduced cardiac motion artifact. The study group comprised 54 consecutive patients undergoing MSCT and CAG. MSCT was ...
Gelsomino Sandro - - 2003
We report an infrequent case of an adult patient with a coronary artery to pulmonary artery fistula associated with a coronary artery aneurysm, a critical stenosis of the left anterior descending coronary artery (LAD) and a LAD dissection located distally to the stenosis. The fistula was successfully closed with direct ...
Mauser Manfred - - 2003
Spontaneous coronary artery dissection is a rare cause of acute myocardial infarction, which is infrequently diagnosed antemortem. The majority of the previously reported cases were found in women of whom a significant proportion presented during pregnancy or the postpartum period. A case is presented of an acute myocardial infarction in ...
Li Jinsheng - - 2003
Placement of an ameroid constrictor in large-conduit pig coronary arteries causes progressive stenosis and distal myocardial ischemia. Blood perfusion in the ischemic region is partly dependent on vasomotor responses to neural and humoral factors distal to the occlusion site. To ascertain the degree of impairment of vascular function in pigs, ...
Sharoni Erez - - 2003
OBJECTIVE: Isolated ostial stenosis of the left main coronary artery is a rare but serious condition. The treatment is surgical with two options: coronary artery bypass grafting or surgical angioplasty of the left main coronary artery. Assessing surgical results as well as follow-up were traditionally done by angiography. METHODS: We ...
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