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Query: UMLS:C0002962 (angina)
 21,142 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Myocardial bridging causes myocardial ischemia during supraventricular tachycardia. We present a case of Wolff-Parkinson-White syndrome combined with myocardial bridging. The patient complained of angina pectoris during paroxysmal supraventricular tachycardia because of severe constriction of the left anterior descending coronary artery during systole. A myocardial scintigram revealed myocardial ischemia in the anteroseptal wall during paroxysmal supraventricular tachycardia. Myotomy to prevent myocardial bridging and interruption of the accessory conduction pathway was successfully accomplished in a one-stage operation.
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PMID:Surgical repair of Wolff-Parkinson-White syndrome complicated with myocardial bridging. 198 50

Myocardial bridging causing systolic occlusion of the left anterior descending coronary artery was identified in a 47-year-old man with angina. A fixed anterolateral wall defect was demonstrated on thallium imaging and he underwent successful division of the bridge resulting in abolition of his symptoms and disappearance of the thallium defect.
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PMID:Systolic coronary occlusion due to myocardial bridging--a rare cause of ischaemia. 229 12

Myocardial bridging and systolic milking may be involved in myocardial ischemia, myocardial infarction, and sudden death. We describe a patient whose milking effect progressed significantly over a two-year period. We conclude that bridging and milking effect can progress over a relatively short period. In those patients with prior reports of insignificant bridging and milking on coronary arteriograms and continued angina-like chest pain, a repeated catheterization may be warranted.
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PMID:Progression of the milking effect of the coronary artery. 722 15

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 perforator. Postexercise SPECT 201TI scanning demonstrated a severe reduction of perfusion to the septum and a moderate reduction of perfusion to the anterior wall of the left ventricle. Redistribution images demonstrated good reversibility of the perfusion defects indicating reversible myocardial ischemia. This case provides additional supportive evidence that myocardial bridging may cause myocardial ischemia.
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PMID:Thallium-201 myocardial SPECT in myocardial bridging. 776 22

Myocardial bridging of the epicardic coronary arteries is not an uncommon finding in angiographic or necropsic studies. Patients who have symptoms usually improve with medical treatment. However, in refractory patients a surgical myotomy of overlying myocardium and/or a coronary bypass may be needed. We report two patients with long myocardial bridges in the mid-left anterior descending coronary artery, who had recurrent angina refractory to conventional treatment. In both patients two consecutive coronary stents were successfully implanted. At five and six months follow-up they are asymptomatic and with good exercise tolerance.
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PMID:[Coronary stent placement for recurrent angina secondary to myocardial bridging]. 1034 80

Myocardial bridging most frequently occurs on the left anterior descending coronary artery and may cause ischemia and related complications. Right coronary artery myocardial bridges (MB) are rare. We report a patient with an unusual coronary bridge, a left circumflex coronary artery bridge, who presented with exercise-induced angina pectoris that was relieved with medical therapy.
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PMID:Left circumflex coronary artery bridging. 1222 18

Myocardial bridging, a congenital coronary anomaly, is a clinical condition with several possible manifestations, and its clinical relevance is debated. This article reviews current knowledge about the anatomy, pathophysiology, clinical relevance, and treatment of myocardial bridging. Myocardial bridging is present when a segment of a major epicardial coronary artery, the 'tunnelled artery', runs intramurally through the myocardium. With each systole, the coronary artery is compressed. Myocardial bridging has been associated with angina, arrhythmia, depressed left ventricular function, myocardial stunning, early death after cardiac transplantation, and sudden death. Evidence indicates that the intima beneath the bridge is protected from atherosclerosis, and the proximal segment is more susceptible to development of atherosclerotic lesions because of haemodynamic disturbances. New techniques (e.g. intravascular ultrasonography and intracoronary Doppler studies) have revealed new characteristics and pathophysiologic processes such as diastolic flow abnormalities. Medical treatment generally includes beta-blockers. Nitrates should be avoided because symptoms may worsen. Intracoronary stents and surgery have been attempted in selected patients. Additional research is needed to define patients in whom myocardial bridging is potentially pathologic, and randomized multicentre long-term follow-up studies are needed to assess the natural history, patient selection, and therapeutic approaches.
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PMID:Myocardial bridging. 1576 18

Myocardial bridging (MB) of coronary arteries has been considered as an incidental angio-graphic finding; however, several reports suggest its association with angina pectoris, myocardial ischemia, and even infarction. In this study the authors aimed to assess exercise-induced QRS changes in patients with isolated MB and to compare those with coronary artery disease (CAD) and healthy subjects. The study population consisted of 17 patients with angiographically proven MB (group 1), 16 patients with left anterior descending (LAD) artery stenosis (group 2), and 14 healthy subjects (group 3). Each subject underwent treadmill exercise testing according to Bruce protocol. In each subject amplitude of the Q, R, and S waves in leads aVF and V(5) was measured manually before and immediately after exercise. The Athens QRS score was calculated by subtracting the Q-, R-, and S-wave differences in leads aVF and V(5). Baseline characteristics of each group were similar. There was no difference among the groups with respect to exercise testing parameters (peak heart rate, blood pressure, test duration, etc). In group 1, ST-segment depression ratio was found to be higher than that of group 3 but lower than that of group 2. In group 1, exercise QRS score was found to be lower than that of group 3 while it was higher than that of group 2 (2.9 +/- 2.3 vs 6.5 +/- 3.2 p = 0.001 and 2.9 +/- 2.3 vs 2.6 +/- 2.4 p = 0.001, respectively). In patients with MB exercise, QRS score was significantly lower than in those with normal coronary flow while it was higher in those with CAD. This may result from exercise-induced ischemia at the area perfused by the bridged artery.
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PMID:Exercise-induced QRS amplitude changes in patients with isolated myocardial bridging: a marker of myocardial ischemia. 1588 93

Myocardial bridging is a clinically uncommon congenital anomaly characterized by tunneling of the coronary artery within the myocardial tissue, usually seen in the left anterior descending artery. Myocardial bridging is associated with altered intracoronary hemodynamics during systole and diastole, determined by the severity and the location of the bridging within the coronary artery. Patients with myocardial bridging may present with angina in the absence of other coronary risk factors which may paradoxically improve with exercise due to an increased intrasystolic pressure, preventing vessel compression. It is uncommon to have bridging in the right coronary artery; it is even more uncommon to have right coronary artery bridging with angina and significant ECG changes. We present a case involving bridging of the right coronary artery with significant symptoms and ECG changes.
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PMID:Myocardial infarction in a young African-American male due to myocardial bridging. 1647 3

Myocardial bridging is one of the nonatherosclerotic causes of coronary artery disease and is characterized by muscles overlying the intramyocardial course of a major epicardial coronary artery segment, leading to systolic compression. Myocardial bridging is considered a benign condition in most cases, but has been associated with serious cardiac events such as myocardial infarction and sudden death. We discuss the case of a 63-year-old man who was admitted to our hospital with effort-induced angina, bradycardia, and left ventricular hypertrophy on electrocardiogram. On coronary angiography, we found significant myocardial bridging with total occlusion in the left anterior descending artery during systole. In patients with myocardial bridging, symptoms often manifest during exercise and with tachycardia. But it is interesting to note that our patient was bradycardic and became symptomatic with minimal effort. Thus, we thought that these emphasized its significance and affected treatment strategy.
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PMID:Treatment strategies in myocardial bridging: a case report. 1694 30


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