Transcatheter Aortic Valve Replacement After Coronary Artery Bypass Graft Is Associated With Increased Pacemaker Implantation but Not Reduced Overall Survival

Brent Klinkhammer

Abstract


Background: A history of coronary artery bypass graft (CABG) is a common compelling indication for transcatheter aortic valve replacement (TAVR). However, there is little data on how these patients compare to other TAVR patients. In this study, the short and long-term outcomes of these TAVR patients after CABG are defined.

Methods: A retrospective chart review case-control study of 337 consecutive patients who underwent a TAVR for severe aortic stenosis at Sanford Health in Fargo ND was performed to determine if a history of prior CABG was associated with worse outcomes after TAVR as compared to a TAVR cohort without a history of CABG.

Results: Despite higher predicted surgical risk, patients with a history of CABG had no significant difference overall survival at 1 month (98% vs. 93%, P = 0.112), 6 months (94% vs. 87%, P = 0.094), 1 year (85% vs. 77%, P = 0.206) or 2 years (70% vs. 57%, P = 0.135) post-TAVR. However, a history of CABG was associated with an increase in post-TAVR permanent pacemaker (PPM) implantation (15% vs. 6%, P = 0.015).

Conclusions: This study gives evidence to suggest that patients with a history of prior CABG do not have any difference in overall survival as other TAVR patients, despite higher predicted surgical risk and differences in preprocedural comorbidities. Our study also confirms the safety of TAVR in this specific population in lower volume centers.




Cardiol Res. 2018;9(1):40-45
doi: https://doi.org/10.14740/cr684w

 


Keywords


Coronary artery bypass graft; Transcatheter aortic valve replacement; Outcomes; Pacemaker; Survival

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