Effectiveness of the new generation transcatheter aortic valve in the real life studies. Review and meta-analysis.

The aim of the meta-analysis was to assess post-procedural outcome of the new generation of transcatheter aortic valve implantation (TAVI) devices, focusing on the transfemoral and balloon-expandable SAPIEN 3 (Edwards Lifesciences Inc., Irvine, CA, USA), the self-expanding CoreValveTM Evolut series R and PRO (R/PRO)TM (Medtronic Inc., Minneapolis, MN, USA) and ACURATE neoTM transcatheter aortic valve (Symetis SA, a Boston Scientific company, Ecublens, Switzerland). All observational studies were retrieved through PubMed computerized database from January 2014 until June 30th, 2019. The risk difference (RD) with the 95% confidence interval (CI) was used to assess the effectiveness of the intervention under comparison. The primary end point was 30-day mortality. Safety end points included: (i) stroke, (ii) moderate/severe paravalvular leak, and (iii) the need for new permanent pacemaker implantation. Meta-analysis demonstrated no significant differences as regards to either 30-day mortality or stroke for all the groups of prostheses under comparison. ACURATE neo was associated with significantly less new permanent pacemaker implantation compared to SAPIEN 3 (RD: -0.06; 95% CI -0.08 to -0.03; p<0.0001; I2=0%) or to EVOLUT R/PRO (RD: -0.06; 95% CI -0.09 to -0.02; p=0.0009; I2=0%). A significant reduction of new permanent pacemaker need was observed in the group of patients implanted with SAPIEN 3 compared to EVOLUT R/PRO (RD: -0.07; 95% CI -0.09 to -0.04; p<0.00001; I2=7%). The occurrence of moderate/severe leak was significantly increased in the group of patients implanted with ACURATE neo vs. SAPIEN 3 (RD: 0.04; 95% CI 0.02 to 0.05; p<0.00001; I2=0%). No significant differences were found between ACURATE neo vs. EVOLUT R/PRO (RD: -0.01; 95% CI -0.04 to 0.02; p=0.69; I2=0%) and between SAPIEN 3 vs. EVOLUT R/PRO (RD: -0.01; 95% CI -0.04 to 0.01; p=0.28; I2=73%). The results of the meta-analysis show that: (1) ACURATE neo was associated with significantly less new permanent pacemaker implantation than SAPIEN 3 and EVOLUT R/PRO; (2) SAPIEN 3 had significantly lower occurrence of moderate/severe valvular leak than ACURATE neo.