Unexplained XXXX with normal coronary arteriograms. A follow-up study.

@entity1 @entity662 @entity66 @entity1242 @entity158 @entity583 @entity204
One hundred and forty-two consecutive @entity1 with unexplained @entity662 and normal coronary arteries were followed up for a mean period of 49.3 +/- 13.1 months. No @entity204 and one @entity583 occurred. Half of the @entity1 were @entity158 -free at follow-up. A definite relationship between persistence of @entity158 and duration of @entity158 history and a positive response to @entity1242 before coronary arteriography were found. @entity1 with persistent @entity158 were more frequently hospitalized for @entity66 , underwent more surgical interventions and took more often noncardiac medication. Rehospitalizations for acute @entity662 were infrequent. Two thirds of the @entity1 resumed their normal activities. Younger age, disappearance of @entity158 , type of occupation, and a shorter duration of the @entity158 history favored return to work. Nonactive @entity1 presented more intercurrent noncardiac, medical and surgical pathology. The findings in @entity1 with a previous @entity583 were similar to those of the group with only @entity662 .
