Performance and Safety of Transfemoral TAVI With SAPIEN XT in Australian Patients With Severe Aortic Stenosis at Intermediate Surgical Risk: SOLACE–AU Trial

Gerald Yong, Tony Walton, Martin Ng, Ronen Gurvitch, Stephen Worthley, Robert Whitbourn, Nigel Jepson, Ravinay Bhindi, Kan Shang, Ajay Sinhal

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Background: To determine the safety and performance of the SAPIEN XT transcatheter heart valve (THV) in Australian patients with severe aortic stenosis (AS) and intermediate surgical risk. 

Methods: Eligible patients in this multi-centre, prospective, consecutively enrolled, non-randomised, clinical trial, received transcatheter aortic valve replacement via femoral artery access. Follow-up visits were at discharge, 30 days, and 6, 12, and 24 months. The primary endpoint was Valve Academic Research Consortium-2 composite safety at 30 days: all-cause mortality, all stroke, life-threatening bleeding, acute kidney injury—Stage 3, coronary artery obstruction requiring intervention, major vascular complication, and valve-related dysfunction requiring repeat procedure. Other endpoints were device success (successful vascular access, delivery, and deployment; correct position; intended performance mean aortic valve gradient <20 mmHg, mild or less paravalvular aortic regurgitation [PAR]; and only one valve implanted) and New York Heart Association functional class (NYHA). Kaplan-Meier (KM) estimates were calculated for the primary endpoint. 

Results: At baseline, mean patient (N=199) age was 85.5 years, mean Society of Thoracic Surgeon score was 5.9, and 78.4% were in NYHA class III/IV. The primary composite endpoint KM estimate was 12.1%. Device success was 88.8%. SAPIEN XT was implanted in the proper location in 98.5% (n=2: valve-in-valve procedures, n=1: no implant due to left main coronary artery occlusion). No device malfunctions were reported. The post procedure PAR was mild or less in 93.8% of patients. Mean aortic gradient decreased from baseline (50.0 mmHg) to 2 years (10.3 mmHg). Most patients (90.9%) were in NYHA class I/II at 30 days. New permanent pacemaker rate was 8.1%. Stroke at 30 days was 3.5% (1.5% disabling). 

Conclusion: SAPIEN XT was safe and improved heart failure symptoms and valve haemodynamics in this cohort of Australian patients.

Original languageEnglish
Pages (from-to)1839-1846
Number of pages8
JournalHeart Lung and Circulation
Volume29
Issue number12
Early online date11 Jun 2020
DOIs
Publication statusPublished - Dec 2020
Externally publishedYes

Keywords

  • Aortic stenosis
  • Intermediate surgical risk
  • TAVI
  • Transcatheter aortic valve implantation

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