Large multicenter evaluation of clinical outcomes of transcatheter aortic valve implantation in different age groups: results from the Israeli TAVI registry

Abstract Introduction Transcatheter aortic valve implantation (TAVI) is becoming the preferred treatment for elderly patients with severe aortic stenosis. Clinical outcomes of these patients according to different age groups and especially in the very old population are under reported. Purpose To describe clinical characteristics at baseline, according to different age groups, and to compare clinical outcomes in the very old population with other patients undergoing the procedure. Methods Data was extracted from the Israeli National TAVI Registry. Clinical outcomes in very old patients (above the age of 90 years) were compared with younger patients. Multivariable analysis for 30-day and 1-year mortality were performed. Procedural complication was defined as one or more of the following: need for permanent pacemaker, major vascular complication, severe acute kidney injury and major stroke. Results A total of 5,936 patients who underwent TAVI from 2008 to 2021 were analyzed (age 81.6±7.1 years, 50.6% female). Patients older than 90 years of age had more comorbidities than the younger population (STS score for mortality 6.4%±3.8% vs. 4.1%±4.8%, p<0.001). Independent correlates for 30-day mortality included STS score (OR=1.01, 95% CI [1.03–1.13], p<0.001) and procedural complication (OR=4.29, 95% CI [2.24–8.20], p<0.0001). Independent correlates for 1-year mortality included chronic obstructive pulmonary disease (OR=1.83, 95% CI [1.28–2.60]; p=0.001), atrial fibrillation (OR=1.71, 95% CI [1.31–2.23]; p<0.001 (STS score); OR=1.13 95% CI [1.09–1.18]; p<0.001), and procedural complication) OR=2.58, 95% [1.89–3.50]; p<0.001). Conclusions Although older patients undergoing TAVI had a higher risk profile, short- and long-term survival of these patients were associated significantly more with procedural complications than with patient age. It seems that extreme patient age alone should not be viewed as a consideration for not performing valve replacement, as long as the risk for procedural complications does not seem to be severely elevated. Funding Acknowledgement Type of funding sources: None.