Usefulness of ejection fraction response to exercise one month after XXXX in predicting coronary anatomy and prognosis.

@entity1 @entity712 @entity1459 @entity951 @entity2224 @entity453 @entity583 @entity204
The prognostic value of left ventricular (LV) ejection fraction (EF) measured during maximal exercise testing early after @entity583 ( @entity583 ) was assessed in 75 @entity1 , aged 65 years or younger, a mean of 36 days after @entity583 . At follow-up for a mean 12 months (range 6 to 26), medical complications developed in 15 @entity1 : @entity204 in 5, @entity2224 in 1, reinfarction in 2, @entity1459 in 5, and severe @entity712 in 2. Seven other @entity1 underwent coronary artery bypass grafting for severe @entity951 . When LVEF less than 50% at rest was compared with LVEF of 50% or more, the 2-year life-table survival free of complications was 54 +/- 21% compared with 84 +/- 19% (p less than 0.05). When exercise LVEF less than 50% was compared with LVEF of 50% or more, the 2-year survival rate free of medical complication was 42 +/- 32% compared with 83 +/- 20% (p less than 0.05). LVEF change from rest to exercise was not related to prognosis. @entity1 with combined medical and surgical events tended to have lower rest and exercise LVEFs, but changes in LVEF during exercise were again unrelated to prognosis. Sixty-five @entity1 underwent coronary arteriography. After inferior @entity583 the mean LVEF was lower in those with multivessel than in those with 1-vessel @entity453 at rest (47 +/- 13% vs 59 +/- 7%, p less than 0.005) and during exercise (47 +/- 13% vs 59 +/- 9%, p less than 0.005); however, the change in LVEF during exercise was not related to coronary anatomy anatomy.(ABSTRACT TRUNCATED AT 250 WORDS)
