Search Results
Results 451 - 500 of 847
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Onaka H - - 1996
OBJECTIVES: Using a new, computerized 24-h 12-lead electrocardiographic (ECG) recording and analysis system (the EAGLE system), we sought to evaluate the clinical manifestations of ischemic episodes in patients with variant angina and normal coronary arteries. BACKGROUND: Although the prognosis of variant angina without significant organic stenosis is generally good, the ...
Masani N D - - 1995
A 48 year old woman presented with angina after an anterior myocardial infarction and was found to be hyperthyroid. Coronary angiography showed a stenosis of the left coronary os and a long, severe stenosis of the left anterior descending artery which was partially relieved by glyceryl trinitrate. Three months later, ...
Ozaki Y - - 1995
BACKGROUND: Whether focal vasospasticity plays a pathogenic role in the progression or regression of coronary atherosclerosis is unknown. To determine whether evidence for such a role exists, we studied long-term changes in coronary luminal measurements in patients with vasospastic angina. METHODS AND RESULTS: Quantitative coronary angiography and repeated ergonovine provocation ...
Kaikita K - - 1995
BACKGROUND: The glycoprotein P-selectin is an adhesion molecule involved in the property change of leukocytes at the initiation of the inflammatory process. The purpose of the present study was to determine whether acute myocardial ischemia induced by coronary spasm causes an acute inflammatory response in the coronary circulation. METHODS AND ...
Imamura M - - 1995
A case of myocardial infarction associated with coronary artery dissection in a thirty-five-year-old woman is reported. An emergent coronary angiogram revealed extensive dissection and thrombosis in the right coronary artery; in addition, severe vasospasm was observed in the left coronary artery on the next day. She was successfully treated with ...
Koyama J - - 1995
Coronary vasospasm is manifested by either focal or diffuse pattern in clinical settings. To examine the differences in vessel wall morphologic appearance between the sites of focal and diffuse vasospasm, we studied 29 patients with chest pain at rest, during exertion, or both by intravascular ultrasound. By angiography, focal vasospasm ...
Mizuyama K - - 1995
Coronary artery spasm is not rare in patients with coronary artery disease, but the influence of regional anesthesia on spasm-induced myocardial ischemia is not known. We investigated the effects of spinal anesthesia on myocardial ischemia during coronary artery spasm in rats, and compared these with the effects of an alpha- ...
Joseph A - - 1995
While radiation therapy has been known to cause myocardial and pericardial damage, its role in accentuating coronary artery disease in the absence of traditional cardiovascular risk factors has been controversial. As younger patients with treatable cancers are being treated with mediastinal radiation, coronary artery disease as a cause for severe ...
Mansur L I - - 1995
CASE SUMMARY: A 36-year-old woman presented with an acute myocardial infarction 2 weeks after the birth of her first child. The patient had smoked two packs of cigarettes a day for 12 years and had been taking bromocriptine to suppress lactation. While in the emergency room, the patient went into ...
Rosencrance G - - 1995
The significance of coronary artery muscle bridging (MB) has been debated since its first angiographic description by Portsmann and colleagues in 1960 (1). The course is usually benign; however, angina, myocardial infarction, sudden death, arrhythmias, and complete heart block have been reported. In this article, we present a case of ...
Stables R H - - 1995
A man of 64 was admitted for the investigation of post infarction angina. He was found to have angiographically normal coronary arteries, except for the presence of a muscle bridge in the left anterior descending coronary artery, believed to be subtending the ischaemic area. He had sustained a completed myocardial ...
Mouratidis B - - 1995
Myocardial bridging is an uncommon condition where a major coronary artery is bridged by a band of muscle and narrows during systole, particularly during rapid heart rates. We present a patient with typical angina and angiographically proven 60% systolic bridging of the left anterior descending artery distal to the first ...
Mizuno Y - - 1995
5-Fluorouracil (5-FU) is widely used in the treatment of various solid tumors. However, 5-FU cardiotoxicity is being reported with increasing frequency. The main symptom of cardiotoxicity is chest pain at rest with ischemic electrocardiographic changes. Up until now, the underlying mechanism has been suspected to be coronary artery spasm. However, ...
Juilliére Y - - 1995
Among 7467 consecutive coronary angiograms performed during an 8-year period, 61 patients had a myocardial bridge of the left anterior descending coronary artery. The overall prevalence of myocardial bridges was 0.82% (from 0.41% to 1.16% per year). Among these patients, 26 had coronary artery disease, 4 had valvular heart disease, ...
Kalsner S - - 1995
Myocardial infarction and sudden cardiac death may be initiated by a sudden intense localized contraction of coronary artery smooth muscle. When this event occurs around a vulnerable eccentric lipid-filled plaque, rupture and extrusion of plaque contents and exposure of collagen occur. This may sometimes be a silent and self-limiting event; ...
Marin-Neto J A - - 1995
Pathogenesis of chronic Chagas' heart disease may include various disturbances in the coronary circulation, that could be responsible for the myocardial lesions seen in human hearts and in experimental models of the disease. In this paper we critically reviewed the anatomical and functional abnormalities described in chronic chagasic patients, pertaining ...
Kafka H - - 1995
OBJECTIVE: To determine the frequency and clinical significance of aorto-coronary vein graft spasm during angiography. DESIGN: Retrospective review of angiograms and subsequent correlation with clinical outcome. PATIENTS: A total of 1264 patients having bypass surgery between 1971 and 1986. MAIN RESULTS: Twenty-four men, aged 31 to 54 years, demonstrated spasm ...
Endoh Y - - 1995
A 67-year-old male was admitted with acute myocardial infarction. Coronary thrombolysis was carried out because complete occlusion of the obtuse marginal branch (OM) in the circumflex artery was detected in emergent coronary angiography, and recanalization of the OM was obtained at 3 hours after the onset of chest pain. No ...
Igarashi Y - - 1995
The relation between isolated negative U waves and the severity of induced coronary artery spasm was investigated in 24 patients with variant angina to determine the grade of myocardial ischemia during the appearance of isolated negative U waves. Coronary artery spasm was induced by injections of either incremental doses of ...
Bac D J - - 1995
This report describes a 35-year-old 40 week pregnant woman who was hospitalized with a diagnosis of acute anteroseptal myocardial infarction. She sustained another, infero-posterior, infarction 4 days later. Coronary arteriography performed after successful Cesearean section displayed primary dissections of the right as well as both left coronary arteries. Her subsequent ...
Agostini D - - 1995
Stunned myocardium is often observed after unstable angina, myocardial infarction, thrombolysis, angioplasty, and bypass surgery but rarely after coronary vasospasm. A case of stunned myocardium caused by diffuse coronary artery vasospasm and mimicking myocardial infarction is reported. The patient had an emergency coronary angiography, which showed no pathological coronary disease, ...
Ellis C J - - 1994
We report on a young housewife who developed a spontaneous coronary artery dissection following unusually severe exercise. She survived an extensive anterior myocardial infarction with the help of an emergency coronary artery vein graft. This rare diagnosis must be considered when a young woman presents with an acute myocardial infarction.
Takatsu F - - 1994
In order to clarify the fate of coronary narrowing with spasm, repeat angiograms of coronary narrowing with and without spasm were compared. The mean interval between the first and second angiograms was 3.6 years (range, 1.1-8.5 years). Improvement of narrowing was more frequent in the vasospastic group (23%) than in ...
Nakamura Y - - 1994
The hypothesis that a coronary vasomotion disorder may exist in the entire coronary artery tree in patients with vasospastic angina was investigated by examining the coronary responses to atrial pacing (130 beats/min) before and after the administration of ergonovine (16 micrograms) into nonspastic coronary arteries. Seven patients with angiographically normal ...
Zainea M - - 1994
Coronary spasm may occur with angiographically normal and diseased coronary arteries. General anesthesia has been described only rarely as a triggering event for coronary artery spasm, and only once before in the presence of angiographically normal coronary arteries. We have now seen three patients presenting with acute ST-segment elevation following ...
Song J K - - 1994
The purpose of this study was to evaluate the clinical validity of the bedside ergonovine test with digital echocardiography and the side-by-side continuous cineloop display method (ergonovine echocardiography) as a noninvasive diagnostic tool for coronary artery spasm. Bedside ergonovine test was performed in 66 patients who showed coronary vasospasm during ...
Igarashi Y - - 1994
The purpose of this study was to investigate the incidence of multivessel coronary spasm and compare the clinical characteristics between patients with and without multivessel coronary spasm. In variant angina, it is controversial whether coronary hyperreactivity to vasoconstrictor stimuli is localized to a segmental lesion in only one coronary artery. ...
Shurmur S W - - 1994
A 60-year-old man underwent directional coronary atherectomy (DCA) of the mid portion of a large, anatomically dominant left circumflex coronary artery, resulting in propagating transverse dissection and subsequent complete distal occlusion. Intravascular ultrasound imaging (IVUS) of the dissected segment demonstrated the entry point of the dissection, and systolic compression of ...
Nagai H - - 1994
Two cases are presented in which angina pectoris associated with ST segment elevation occurred during either an ergonovine provocation test or coronary angioplasty, despite the absence of epicardial coronary artery obstruction. In both cases, no epicardial coronary spasm, thromboembolic occlusion, coronary air embolus, vessel dissection, or side-branch occlusion was observed. ...
Suzuki H - - 1994
The incidence of coronary ectasia (CE) and the relationship between CE and coronary spasm that was said not to be apt to occur in patients with CE were studied. The study consisted of 1,373 patients (including 1,008 patients with ischemic heart disease) who underwent cardiac catheterization. In 74 patients with ...
Maekawa K - - 1994
A 33-year-old pregnant woman suffered from acute anteroseptal myocardial infarction at the 19th gestational week. Despite periodic attacks of myocardial ischaemia after admission, the coronary arteriograms under the use of nitroglycerin were normal. Thereafter, she remained free from the ischaemic events with diltiazem hydrochloride and delivered a healthy baby. The ...
Mather P J - - 1994
A 29-year-old woman had an acute myocardial infarction 5 days after giving birth. Serial coronary angiography showed multiple progressive coronary artery dissections, which eventually involved both the right and left coronary trees. Persistent cardiogenic shock necessitated emergent orthotopic heart transplantation. Examination of the cardiectomy specimen confirmed the presence of multiple ...
Pasalodos Pita J - - 1994
Spontaneous coronary artery dissection is a rarely identified entity whose exact incidence, etiology, pathogenesis, medium-term evolution, and optimal treatment have not yet been firmly established. This article describes five new cases with additional specific characteristics. Five of 2,241 coronary arteriograms taken between September 1989 and November 1992 showed angiographic signs ...
Jorgensen M B - - 1994
Spontaneous coronary dissection is a rare entity. It has been reported to be usually fatal, with greater than an 80% mortality rate. From April 1990 through March 1993, 10 patients had spontaneous coronary dissection. This is a significant increase in the incidence of this diagnosis, with only one prior case ...
Dean J W - - 1994
Myocardial bridging causing systolic compression of epicardial coronary arteries may be an incidental finding at coronary arteriography. Bridging rarely causes myocardial ischaemia. A young man presented with chest pain and striking abnormalities of ventricular repolarisation that initially were treated as myocardial infarction. At cardiac catheterisation the coronary arteries were normal ...
Ge J - - 1994
BACKGROUND: In autopsy, myocardial bridging is a common finding. With coronary angiography, a systolic compression, mainly of the left anterior descending coronary artery, is observed in 1% to 3% of the patients. Controversy exists concerning the functional importance of this finding. To obtain a functional insight into the myocardial bridging, ...
Conway R S - - 1994
OBJECTIVE: The heart of the young Syrian cardiomyopathic hamster (CMH) displays discrete patches of active myocytolytic necrosis and it has been hypothesised that these lesions are triggered by arteriolar spasm. Accordingly, we tested the theory that the coronary vasoconstrictor response to arginine vasopressin (AVP) infusion is more vigorous in the ...
Behrens S - - 1994
We present three patients without significant coronary or other structural heart disease who were resuscitated after ventricular fibrillation attributed to coronary spasm. Angina pectoris was present in two of the cases and silent myocardial ischemia in the third. All patients were given calcium antagonists at discharge. A defibrillator was also ...
Parry R - - 1994
Spontaneous coronary artery dissection is a rare cause of ischaemic heart disease occurring most commonly in young women. It is frequently fatal. Our case is unusual in that a very long dissection flap was diagnosed by coronary angiography in a male patient who presented with only minor symptoms. We discuss ...
Attenhofer C - - 1994
Exercise-induced anaphylaxis (EIA) is a rare form of physical allergy. Although histamine release is a feature of EIA, and histamine provocation of coronary spasm has been described, serious cardiac arrhythmias in EIA have not been reported. Exercise-induced anaphylaxis was diagnosed in a survivor of out-of-hospital cardiac arrest due to ventricular ...
Yamagishi M - - 1994
OBJECTIVES: The purpose of this study was to use intravascular ultrasound imaging to examine the presence of occult atherosclerosis at the site of focal vasospasm in angiographically normal or minimally narrowed segments, testing the role of atherosclerosis in the development of vasospasm. BACKGROUND: Previous clinical and experimental studies have suggested ...
Vouhé P R - - 1994
A successful outcome after arterial switch operation (ASO) for transposition of the great arteries (TGA) depends in large part on the adequacy of transfer of the coronary arteries to the neoaorta. The present paper describes a new technique of coronary transfer which was used in 43 patients: 28 neonates with ...
Kaufman D K - - 1994
BACKGROUND AND PURPOSE: Although repetitive involuntary movements are a well-recognized manifestation of carotid occlusive disease, similar movements have not been reported with a lacunar infarction outside of the basal ganglia or subthalamic nucleus. We describe a man with tonic spasms associated with a lacunar infarction in the right ventral pons. ...
Ocal M K - - 1993
Quantitative investigations were performed on hearts and coronary arteries of 10 fetal and 7 adult oxen. Relative heart weights were 0.42% in adults and 0.80% in fetuses. An interesting observation was that left coronary artery predominated by a ratio of 2.55 in adults and 1.41 in fetuses although the percentage ...
Kearney P - - 1993
We describe the clinical course of three patients who developed spontaneous coronary artery dissection. All patients were young women, one 9 weeks pregnant. All presented with chest pain; one died suddenly proving refractory to resuscitation, another developed unstable angina culminating in myocardial infarction, cardiogenic shock and death, and the third ...
Burkey D - - 1993
A 43-year-old female received tissue plasminogen activator for an acute antero-apical myocardial infarction. Cardiac catheterization demonstrated three focal dissections involving the left anterior descending and circumflex arteries. She expired unexpectantly after undergoing emergency coronary artery bypass grafting for therapy of an extension of her infarct. To our knowledge, this is ...
Keefe D L - - 1993
5-Fluorouracil is widely known to be toxic to the hematopoietic and gastrointestinal systems. It also has cardiac toxicity, but this is perceived to be rare. During a 16-month period from January 1990 through April 1991, approximately 910 patients were treated with 5-fluorouracil. Five of these developed life-threatening toxicity consistent with ...
Nakamura C T - - 1993
The origin of the left coronary artery from the anterior sinus of Valsalva is a rare coronary anomaly. Nevertheless, it remains an important pathological entity because of the possibility of its clinical and surgical consequences. Physicians should therefore be aware of this condition and consider it in their differential diagnosis ...
Sekiya M - - 1993
Small-vessel vasospasm has been speculated upon as a possible cause of chest pain in patients with normal-appearing coronary angiograms. In this report, a patient who experienced typical chest pain during acetylcholine testing, which caused ST segment elevation without epicardial coronary spasm, is presented. This finding suggests that small-vessel vasospasm may ...
Horimoto M - - 1993
A 63-year-old man with an acute anterior myocardial infarction demonstrated an intracoronary nonocclusive thrombus distal to the organic stenosis of the left anterior descending coronary artery. One month after the infarction the thrombus was completely dissolved, and spontaneous and provoked spasm occurred overlying the organic stenosis of the coronary artery. ...
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