@entity662 with angiographically insignificant XXXX . Clinical presentation and long-term follow-up.

@entity1 @entity662 @entity63 @entity951 @entity453 @entity583
Among 3,242 coronary angiograms performed from November 1972 through October 1975 at the Massachusetts General Hospital, 175 @entity1 had normal coronary arteries or luminal narrowings of less than 30 per cent. All @entity1 were studied for @entity662 , and none had experienced prior @entity583 . Subsequent information was available in 159 @entity1 over a mean follow-up period of 42.7 months. There were no deaths, and only one @entity583 occurred during this period. However, among the @entity1 followed, continued @entity662 with episodes occurring at least once monthly was present in 54 per cent. In addition, 17 per cent of all @entity1 required subsequent hospitalization and 44 per cent continued to receive antianginal medication. Nearly half of the group (46 per cent) suffered some limitation of activity, and 22 per cent stated that they had either changed jobs or stopped work because of @entity662 . Continuing @entity662 was significantly more common in @entity1 and in @entity1 who had experienced @entity662 for more than one year before angiography. However, typicality of @entity662 for @entity951 or the occurrence of electrocardiographic changes of @entity63 prior to angiography did not predict continued @entity662 during the follow-up period. Thus, although mortality and morbidity are low in this group of @entity1 , the syndrome of @entity662 with angiographically insignificant @entity453 has an important impact on the lives of a majority of those affected.
