Early pacemaker insertion after aortic valve replacement with an Edwards Intuity sutureless valve

Area of Science:

• Cardiovascular Surgery
• Biomaterials Science
• Medical Device Technology

Background:

• Postoperative conduction disorders are significant complications following aortic valve replacement.
• These complications can extend hospital stays and necessitate pacemaker implantation.

Purpose of the Study:

• To compare pacemaker insertion rates between the Edwards Intuity sutureless aortic valve and standard surgical bioprostheses.
• To evaluate associated conduction disorders and clinical outcomes.

Main Methods:

• Retrospective single-centre study comparing Intuity valve and standard bioprosthetic valve implantation.
• Primary outcome: postoperative pacemaker insertion rate.
• Secondary outcomes: conduction disorders, arrhythmias, mortality, and hospital stay.

Main Results:

• The Intuity group showed a significantly higher adjusted rate of pacemaker insertion (22.44%) versus the standard group (5.66%).
• New left bundle branch block conduction disorders were more frequent with the Intuity valve (OR 5.28).
• Complete atrioventricular block and prolonged H-V interval were key indications for pacemaker insertion.

Conclusions:

• The Intuity sutureless bioprosthesis is associated with increased rates of pacemaker insertion and new conduction disorders.
• These findings suggest careful patient selection and monitoring are needed for sutureless aortic valve implantation.