Frequency and prognosis of XXXX induced by surgical aortic valve replacement.

@entity1 @entity5036 @entity74 @entity714
OBJECTIVES: Recently, transcatheter aortic valve implantation has been introduced, but one of its complications is @entity714 ( @entity714 ), a conduction disturbance that has been associated with increased mortality. We investigated the incidence and fate of both @entity714 ( @entity714 ) and @entity714 after aortic valve replacement (AVR) using a retrospective analysis. We also studied the predictive @entity74 for all-cause mortality. METHODS: All @entity1 who underwent AVR, with or without concomitant coronary artery bypass grafting surgery, between 2002 and 2010 in our centre were included. All-cause mortality was compared between @entity1 who did and those who did not develop persistent @entity5036 (BBB) within 7 days postoperatively. @entity1 were not eligible if one of their electrocardiogram (ECG) recordings prior to AVR showed a BBB or pacemaker activity. A postoperative period of 3-12 months was used to collect follow-up ECGs. RESULTS: Of the 2279 AVR @entity1 , 2033 @entity1 were eligible for analysis. After excluding @entity1 lacking baseline or follow-up ECG (n = 269), 1764 @entity1 remained for analysis. Early @entity714 and @entity714 occurred in 71 (4.0%) and 92 (5.2%) @entity1 , respectively. At follow-up, @entity714 was persistent in 29 @entity1 (1.6%) and @entity714 in 74 @entity1 (4.2%). During a median follow-up of 4.5 (2.4-6.5) years, the mortality rate was 16.3% (n = 271) in @entity1 without BBB, 24.1% (n = 7) in @entity1 with persistent @entity714 and 18.9% (n = 14) in @entity1 with persistent @entity714 (log-rank P = 0.49). Though, in univariate analysis, the hazard ratio for mortality was 1.54 and 1.10 for @entity714 and @entity714 , respectively, the small numbers precluded identifying AVR-induced @entity714 and @entity714 as a predictor of mortality. CONCLUSIONS: In the current practice of AVR, persistent postoperative @entity714 and @entity714 occur infrequently (   5% of cases), a percentage less than half of that in current transcatheter aortic valve implantation procedures. Given the adverse effects of @entity714 , the lower prevalence of procedure-induced @entity714 in AVR should be taken into account while deciding which valve replacement procedure is chosen for a @entity1 .
