@entity296 of coronary arteries associated with an impending acute XXXX .

@entity1 @entity662 @entity154 @entity10486 @entity296 @entity101 @entity583 @entity741 @entity453
A 57-year-old @entity1 developed severe @entity662 radiating to the left arm accompanied by @entity10486 and marked diaphoresis. These symptoms appeared at rest, lasted 45 minutes, and terminated spontaneously. The @entity1 had been treated for mild @entity101 during the last 6 months. An ECG tracing obtained at the beginning of treatment was unremarkable. However, an ECG tracing recorded shortly after the end of the symptoms showed T-wave inversion in all anterior leads. Coronary arteriography was then performed and showed no fixed obstructive @entity453 . Nonetheless, a lengthened and constricted @entity296 of both the left anterior descending coronary artery and its major diagonal branch was detected. Also, the left anterior descending coronary artery was observed to be very short, terminating before the cardiac apex. The left ventricle was hypertrophied. The @entity1 was treated with a beta-blocking agent which eliminated all symptoms. An ECG tracing obtained about three months after the onset of the clinical picture was normal. Our findings suggest that marked @entity741 at rest does occur in @entity1 having myocardial bridges under special circumstances, such as lengthened and constricted @entity296 of a short coronary artery which supplies a hypertrophied ventricle. This @entity154 should be taken into account as a possible cause of a threatened @entity583 , which may be successfully treated with a beta-blocking agent.
