Etiology and clinical significance of new XXXX following coronary bypass surgery.

@entity1 @entity101 @entity6 @entity714 @entity713 @entity301 @entity1188 @entity951
Two hundred consecutive @entity1 undergoing only coronary bypass surgery were studied. Forty-five @entity1 (group A) developed new @entity714 and 155 @entity1 (group B) did not. The 45 @entity1 in group A developed the following @entity714 : @entity714 47%, @entity714 and left anterior hemiblock 8%, @entity714 and first-degree @entity713 %, left anterior hemiblock 11%, @entity714 18%, @entity714 -left anterior hemiblock and first-degree @entity713 5%. There were no significant differences in sex, incidence of @entity6 , number of grafts performed, ejection fraction (less than 55%), and perioperative @entity1188 . Group A @entity1 were older (p less than 0.01). @entity101 was found frequently in group A (27 vs 45 @entity1 ; p less than 0.01) and was present for a mean of 12.4 years in group A and 4.9 years in group B (p less than 0.01). Preoperative use of digitalis was found in 14 (31%) @entity1 in group A and in 18 (12%) @entity1 in group B (p less than 0.01). Twenty-one (47%) @entity1 in group A had significant disease (greater than 70%) of the left main coronary artery as compared to 17 (10.9%) in group B (p less than 0.001). There was no difference in the recurrence of @entity951 or the survival rate at 14 months. In conclusion, the incidence of new @entity714 after bypass surgery is 22.5%. Long-standing @entity101 , left main @entity301 , and the preoperative use of digitalis appear to be predisposing factors. @entity714 does not affect prognosis.
