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Results 101 - 150 of 847
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Jodocy Daniel - - 2010
OBJECTIVE: To assess the relationship between left anterior descending (LAD) coronary artery myocardial bridging detected by 64-slice computed tomography (CT) and clinical findings. METHODS: 221 consecutive patients were examined with coronary 64-slice CT angiography. 21 patients with coronary stenosis >50% were excluded. The length, depth, and luminal narrowing of LAD ...
Shirotani Manabu - - 2010
BACKGROUND: Japanese patients with acute myocardial infarction (MI) have a greater incidence of coronary artery spasm than Caucasians. Some beta-blockers have been reported to aggravate coronary spasm. This study sought to assess the effects of beta-adrenoceptor blockade on coronary vasospasm in Japanese patients with acute MI who had been treated ...
Hendriks Matthijs L - - 2008
Coronary artery spasm has been known to induce ischaemia and ventricular arrhythmias. We present a case of recurrent ventricular fibrillation caused by spasm-associated transmural myocardial ischaemia. During an intra-coronary acetylcholine provocation test, severe coronary spasm could be induced. The patient was treated with a hybrid approach of medication and an ...
Aggarwala Guarav - - 2008
We discuss the case of a 71-year-old female patient who presented with findings suggestive of an acute myocardial infarction. Subsequent evaluation revealed an extrinsic cardiac mass encasing the left circumflex and right coronary arteries (RCA) which caused compression and spasticity of the RCA. Biopsy findings were consistent with a hematologic ...
Kamran Mazullah - - 2008
Spontaneous coronary artery dissection (SCAD) is a rare but important cause of acute coronary syndromes. SCAD can cause unstable angina, acute myocardial infarction, and sudden death. Predisposing factors include atherosclerosis, the peripartum period, and structural and inflammatory conditions affecting the arterial wall. The diagnosis of coronary dissection is usually made ...
De Rosa R - - 2008
BACKGROUND: Intramyocardial course, an inborn coronary anomaly, is defined as a segment of a major epicardial coronary artery that runs intramurally through the myocardium; in particular, we distinguish myocardial bridging, in which the vessel returns to an epicardial position after the muscle bridge, and intramyocardial course, which is described as ...
Scott P A - - 2008
Capecitabine is a chemotherapeutic prodrug that is metabolised to 5-fluorouracil. Supported by the National Institute for Health and Clinical Excellence guidance it is now first-line adjuvant treatment for metastatic colorectal cancer in the UK. Although cardiac chest pain and myocardial ischaemia are well recognised side effects of 5-fluorouracil, their association ...
Ghosh Nina - - 2008
Spontaneous coronary artery dissection is an unusual cause of acute myocardial ischemia. The natural history of spontaneous coronary artery dissection that persists on angiography after the acute event has not been well characterized. A case of a 36-year-old man who presented with monomorphic ventricular tachycardia 12 years following a myocardial ...
Guo Linrui Ray - - 2008
Myocardial infarction that is attributed to native coronary artery spasm in the early postoperative phase has rarely been documented. We report three cases of postoperative myocardial infarction secondary to angiographically demonstrated coronary spasm. Native coronary artery spasm is a rare, but important cause of postoperative ischemia and infarction. Suspicious electrocardiographic ...
Barcin Cem - - 2010
Myocardial bridges may cause angina pectoris, myocardial infarction, life threatening arrhythmias and even sudden cardiac death but most of them are harmless. Although the exact management is not well known, beta blockers seem to be the first choice. Stenting is controversial and one must think "twice" before stenting the bridged ...
de Gregorio Cesare - - 2009
In this report the authors deal with the combined approach of last generation computed tomography and color Doppler echocardiography to make a diagnosis of myocardial coronary bridging in a young patient with left ventricular hypertrophy. Double-source tomographic scan precisely identified the tunnelled segment of the left descending coronary artery (the ...
Wong Chi Wing - - 2008
OBJECTIVE: To describe the clinical features, natural history and response to treatment of coronary vasospasm associated with eosinophilia. METHODS: Two patients with eosinophilia who had recurrent acute coronary events due to multi-vessel coronary artery spasm are described. The clinical presentation and outcomes of these 2 patients and 17 additional cases ...
Lee Sang Rok - - 2008
A 58-year-old woman with a known congenitally corrected L-transposition of great arteries (TGA) presented with non-ST segment elevation myocardial infarction. Dual-source computed tomography showed characteristic features of congenitally corrected L-TGA and myocardial bridge at the proximal segment of the left anterior descending coronary artery. This case showed how multidetector computed ...
Ong Peter - - 2008
OBJECTIVES: This study was conducted to clarify the incidence of coronary spasm in emergency patients with suspected acute coronary syndrome (ACS) and acute chest pain at rest. BACKGROUND: Chest pain at rest is a frequent symptom in the emergency room. Acute coronary syndrome is suspected in patients with elevation of ...
Wakabayashi Kohei - - 2008
OBJECTIVES: This study was conducted to examine the relationship between provoked coronary spasm and clinical course in patients with acute myocardial infarction (AMI). BACKGROUND: Coronary spasm has a pathogenetic role in the occurrence of AMI and progressive atherosclerosis. There is no report that focused on the prognostic significance of provoked ...
Gold Daniel R DR Department of Internal Medicine, Division of Cardiology, North Shore University Hospital, Manhasset, NY, USA. - - 2008
Myocardial bridging is not uncommon. However, hemodynamic instability in the setting of myocardial bridging is rare. We describe an unusual case of a 47-year-old woman whose increased use of inhaled albuterol led to a non-ST-segment elevation myocardial infarction and unmasking of hemodynamically significant myocardial bridging. We detail its diagnosis through ...
Crespo Alejandro - - 2008
We report the results of surgery and midterm outcome in two patients with symptomatic myocardial bridging who underwent off-pump supra-arterial myotomy. Both patients were operated upon through a median sternotomy. The anterior wall of the heart was exposed in the same manner as in off-pump CABG. The left anterior descending ...
Fujibayashi Daisuke - - 2008
A 68-year-old Japanese man with acute inferior myocardial infarction underwent emergent coronary angiography which showed a myocardial bridge, but no coronary stenosis, at the infarctrelated artery. A spasm provocation test using intracoronary acetylcholine revealed a total occlusion due to severe spasm at the site of the myocardial bridge. Thus, the ...
Matsushita Shonosuke - - 2008
BACKGROUND: Coronary vasospasm is defined as a temporary, intense narrowing of the coronary conduit artery. It brings about ischemic chest pain and becomes one of the causes of myocardial infarction. Coronary spasms are divided into two categories. One is the coronary spasm of the conduit artery and the other is ...
Patan? Salvatore - - 2009
Subclinical hyperthyroidism is an increasingly recognized entity that is defined as a normal serum free thyroxine and free triiodothyronine levels with a thyroid-stimulating hormone level suppressed below the normal range and usually undetectable. It has been reported that subclinical hyperthyroidism is not associated with CHD or mortality from cardiovascular causes ...
Glossop A - - 2008
Although vasospasm usually occurs in the presence of normal coronary arteries, its clinical course is indistinguishable from coronary ischaemia, and actual myocardial damage frequently occurs, as demonstrated by ECG changes and troponin rises seen in such cases. Spasm can be promptly and effectively treated if recognized early, and treatment with ...
Konen Eli - - 2008
The recent introduction of coronary computed tomographic angiography into clinical use as a noninvasive tool for coronary artery evaluation has evoked a new interest in myocardial bridging. Recent studies using multidetector computed tomography for the evaluation of coronary anatomy have shown myocardial bridging to be more prevalent than previously reported ...
Rosenberg Thierry - - 2008
The occurrence of a coronary spasm after an adenosine stress test is an exceptional event. We report a vasospasm in a patient with normal coronary angiography. The spasm occurred shortly after termination of adenosine infusion on abrupt withdrawal of vasodilation. Ischaemia induced ventricular arrhythmia (bursts of polymorphous tachycardia) that responded ...
Pries Axel R - - 2008
Obstructive disease of the large coronary arteries is the prominent cause for angina pectoris. However, angina may also occur in the absence of significant coronary atherosclerosis or coronary artery spasm, especially in women. Myocardial ischaemia in these patients is often associated with abnormalities of the coronary microcirculation and may thus ...
Johansen Christopher - - 2008
INTRODUCTION: Myocardial bridging is a congenital condition in which a section of coronary artery is surrounded by myocardium. Historically, myocardial bridging has been diagnosed by catheter angiography. This study investigates the effectiveness of electrocardiogram-gated 64-slice multidetector computed tomography in detecting myocardial bridging. MATERIALS AND METHODS: We retrospectively reviewed 167 consecutive ...
Zeina A R - - 2008
Myocardial bridging (MB) is defined as an intramural segment of a coronary artery that normally courses epicardially. MB is usually a benign condition; however, some cases resulting in myocardial ischaemia, infarction and sudden death have been reported. We describe a case of myocardial infarction related to MB in a young ...
Huang Henry W - - 2008
Myocardial bridging is associated with myocardial infarction (MI) on rare occasions. The mechanism by which this occurs is unclear; vessel occlusion in this setting may be due to superimposed thrombosis or vasospasm. An unusual case is presented of postoperative MI from thrombosis associated with myocardial bridging and intravascular volume depletion, ...
Bulum Josko - - 2008
6497 consecutive patients who underwent coronary angiography in our institution in a three-year period were analysed. Spontaneous coronary artery dissection was noted in five, and unexpected dissection secondary to coronary arteriography in three patients. All patients with spontaneous dissection presented clinically as myocardial infarction. Three patients (two of them with ...
Sueda Shozo - - 2008
OBJECTIVES: We examined some recommendations for performing acetylcholine (ACh) tests safely. METHODS AND RESULTS: We performed 1000 ACh tests from 1991 to December 2004. ACh was injected in incremental doses of 20/50/80 microg into the RCA and of 20/50/100 microg into the LCA. During these periods, we encountered various major/minor ...
Michels H R - - 2008
A 60-year-old female patient with Prinzmetal angina and a single non-critical (<50%) focal obstruction in the right coronary artery was referred for percutaneous coronary intervention. Coronary angiography with provocative testing using incremental doses of acetylcholine demonstrated diffuse mild vasoconstriction and multifocal hyperreactive vasoconstriction in apparently normal coronary segments but not ...
Bartolini Davide - - 2008
Spontaneous coronary artery dissection is a rare clinical event and often a fatal cause of ischaemic heart disease occurring predominantly in young or middle-aged otherwise healthy patients. We present the case of a 59-year-old female patient who was admitted to our coronary care unit with acute anterior myocardial infarction. Coronary ...
Jacobs Jill E - - 2008
OBJECTIVE: To evaluate the prevalence and characteristics of myocardial bridging in patients who underwent single- or dual-source multidetector cardiac computed tomographic angiography (MDCTA). METHODS: Retrospective review of the imaging characteristics of 57 myocardial bridges in 53 patients who underwent cardiac MDCTA examinations was performed. RESULTS: The prevalence of myocardial bridges ...
Sim Tiong Beng - - 2008
We report a case of NSAID-induced anaphylaxis precipitating coronary artery vasospasm leading to myocardial infarction in the presence of normal coronaries. Furthermore, we have also discussed the possible mechanisms for this. Attending clinicians should be aware of this potential complication when treating anaphylaxis, especially in patients with known or presumed ...
Yasue Hirofumi - - 2008
Coronary (artery) spasm plays an important role in the pathogenesis of ischemic heart disease, including stable angina, unstable angina, myocardial infarction, and sudden death. The prevalence of coronary spasm differs among populations, is higher in Japan and Korea than in the Western countries probably due to genetic as well as ...
Antonopoulos Athanassios - - 2008
Apical ballooning syndrome (ABS) is a unique acute cardiac syndrome characterized by symptoms and electrocardiographic changes that mimic acute myocardial infarction. It occurs in patients without evidence of significant obstructive coronary artery disease and is associated with transient extensive wall motion abnormalities of the apical and mid portions of the ...
Camardella B - - 2008
We report 2 cases of Myocardial Bridge (MB). MB, even though a very frequent anomaly (found out in 85% of autopsies), often is asymptomatic. It is hard to diagnose in patients affected by coronary artery disease, seldomly found out on selective coronary angiograms (in 16-20% of chest pain cases). MB ...
Mavi Ayfer - - 2008
INTRODUCTION: Little is known of the clinical significance of myocardial bridges, which may be recognised as the narrowing of the systolic coronary artery as seen in an angiography. In this study, our goal was to review the literature information about the anatomic aspects, the clinical manifestations and implications, and the ...
Lee Chi-Hang - - 2008
Isolated coronary artery spasm without atherosclerotic obstruction is an unusual cause of myocardial infarction (MI). A middle-aged woman presented to our institution in 2001 with acute inferior MI due to coronary artery spasm at the mid segment of the dominant left circumflex coronary artery. After being well for 6 years, ...
Bonvini Robert F - - 2008
Myocardial bridge (MB) or tunneled coronary artery is an inborn abnormality, which implicates a systolic vessel compression with a persistent mid-late diastolic diameter reduction. Myocardial bridges are often observed during coronary angiography with an incidence of 0.5%-5.5%. The most involved coronary artery is the left anterior descending artery followed by ...
Shahabi Shohreh - - 2008
BACKGROUND: Myocardial infarction in pregnancy carries high morbidity. Spontaneous coronary artery dissection is one etiology of infarction, and up to one third of cases may arise in the third trimester of pregnancy or within three months postpartum. CASE: We report two cases of spontaneous coronary artery dissection, one at 34 ...
Rigo Fausto - - 2008
The aim of this paper is to highlight coronary investigation by transthoracic Doppler evaluation. This application has recently been introduced into clinical practice and has received enthusiastic feedback in terms of coronary flow reserve evaluation on left anterior coronary artery disease diagnosis. Such diagnosis represents the most important clinical application ...
Angelini Paolo - - 2008
Human coronary anatomy allows for a wide range of anatomic variants while maintaining certain consistent features. The use of specific descriptions and names is helpful in talking about variants that have an implicit potential for clinical consequences. In reviewing the angiograms of 813 patients, we newly identified a coronary pattern ...
Patanè Salvatore - - 2009
Revelation of a myocardial bridge has been described at coronary angiography. The pathophysiology of myocardial bridging is incompletely understood. It is sometimes associated with overt pathology, as well as it can just be an incidental finding without any significance. It has been also reported an acute myocardial infarction with normal ...
Yoon Young Kyung - - 2009
Congenital absence of left circumflex coronary artery (LCX) is a very rare congenital anomaly of the coronary circulation, and few cases have been reported in the literature. We report a case of a 48-year-old male who had congenital absence of LCX presented with vasospastic angina. Routine coronary angiography showed congenital ...
Tatli Ersan - - 2009
The coronary slow flow phenomenon is an angiographic finding characterized by delayed distal vessel opacification in the absence of epicardial coronary artery disease. We reported that a 33-year-old male patient with a history of exertional angina (Canadian Class II). Electrocardiographic and transthoracic echocardiographic examination were found to be completely normal. ...
Kilic Harun - - 2009
We observed transient myocardial bridging of left anterior descending coronary artery (LAD) in 18.75% (12 of the total 64) of the patients during acute inferior myocardial infarction (MI). Myocardial bridging occurred only in the acute phase of inferior MI and not in the chronic phase. In the acute phase of ...
Ko Sung-Min - - 2008
AIMS: The aims of this study were to evaluate the incidence and the clinical significance of myocardial bridging in 401 patients with chest pain examined with 16-row Multidetector CT (MDCT) coronary angiography. MATERIAL AND METHODS: Four hundred nine consecutive patients who had chest pain or symptoms suggestive of coronary artery ...
Guo Hangyuan - - 2007
We describe a case of a 41-year-old woman with chest pain for 1 hour who was admitted to our emergency room with acute myocardial infarction. Coronary angiography and spiral computer tomography showed myocardial bridging and an intracoronary thrombus in the mid-segment of the left anterior descending artery. She felt better ...
Huang Xiao-Hong - - 2007
BACKGROUND: Myocardial bridging with systolic compression of the left anterior descending coronary artery (LAD) may be associated with myocardial ischaemia. The clinical outcome in patients with surgical treatment for symptomatic myocardial bridging remains undetermined. This study assessed the middle- and long-term results of surgical treatment for symptomatic myocardial bridging. METHODS: ...
Atar Eli - - 2007
OBJECTIVE: Myocardial bridging is a congenital condition in which a segment of an epicardial artery has an intramural course within the myocardium. The aim of the present study was to evaluate the prevalence of myocardial bridging and the ability of 64-slice coronary computed tomography angiography to identify myocardial bridging in ...
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