Time course of the survival advantage of transcatheter over surgical aortic valve replacement: Interplay between sex and patient risk profile

Catheter Cardiovasc Interv. 2019 Nov 1;94(5):746-752. doi: 10.1002/ccd.28124. Epub 2019 Feb 28.

Abstract

Objectives: The aim of this study was to explore the time course of survival advantage of TAVR over SAVR as function of the patients' risk and sex.

Background: Women have been reported to have better survival than men undergoing transcatheter aortic valve replacement (TAVR). However, scant data on the sex-based survival benefit of TAVR over surgical aortic valve replacement (SAVR) are available.

Methods: A systematic review of studies reporting clinical outcomes of men and women undergoing TAVR or SAVR was performed. Studies were divided into two groups according to average patient's risk score and the interplay of surgical risk and sex on outcomes were analyzed.

Results: Eight studies involving 6,596 women and 7,204 men patients were extracted. Unlike mens, women patients had survival advantage from TAVR over SAVR that became substantial at 1 year from index procedure and persisted at 2-year of follow-up. Moreover, this sex-based TAVR survival advantage was mainly observed in higher surgical risk patients. Men showed a significantly lower rate of residual paravalvular leak after SAVR.

Conclusions: Women patients had a selective mortality benefit from TAVR compared to SAVR. This sex-based TAVR benefit was mainly observed in high surgical risk patients beyond 1 year from procedure.

Keywords: aortic valve disease; gender, outcomes/studies; surgery, valvular; transcatheter valve implantation.

Publication types

  • Systematic Review

MeSH terms

  • Aged
  • Aged, 80 and over
  • Aortic Valve / diagnostic imaging
  • Aortic Valve / physiopathology
  • Aortic Valve / surgery*
  • Aortic Valve Stenosis / diagnostic imaging
  • Aortic Valve Stenosis / mortality
  • Aortic Valve Stenosis / physiopathology
  • Aortic Valve Stenosis / surgery*
  • Female
  • Heart Valve Prosthesis Implantation* / adverse effects
  • Heart Valve Prosthesis Implantation* / instrumentation
  • Heart Valve Prosthesis Implantation* / mortality
  • Humans
  • Male
  • Risk Assessment
  • Risk Factors
  • Sex Factors
  • Time Factors
  • Transcatheter Aortic Valve Replacement* / adverse effects
  • Transcatheter Aortic Valve Replacement* / instrumentation
  • Transcatheter Aortic Valve Replacement* / mortality
  • Treatment Outcome