Q:  What percentage of patients may require permanent pacemaker (PPM) after transcatheter aortic valve implantation (TAVI)(Corvalve)?


Answer:  About 1/3rd

One third of patients undergoing a (CoreValve) transcatheter aortic valve implantation procedure may require a PPM. Followin factors may effect the need:

• Periprocedural atrioventricular block,
• balloon predilatation,
• use of the larger CoreValve prosthesis,
• increased interventricular septum diameter and
• prolonged QRS duration

References:

Permanent Pacemaker Insertion After CoreValve Transcatheter Aortic Valve Implantation
Incidence and Contributing Factors (the UK CoreValve Collaborative) M.Z. Khawaja, MBBS; and co.  -  Circulation.2011; 123: 951-960