The valve may wear out – this is more likely in people who have had a biological valve replacement for a long time.
Irregular heartbeat (arrhythmia) – this affects around 25% of people after an aortic valve replacement and usually passes with time. But 1 to 2% of people will need to have a pacemaker fitted to control their heartbeat.
Kidney problems – in up to 5% of people, the kidneys don't work as well as they should for the first few days after surgery. In a few cases, temporary dialysis may be needed.
An aortic valve replacement is a major operation and occasionally the complications can be fatal.
Overall, the risk of dying as a result of the procedure is estimated to be 1 to 3%.
But this risk is far lower than the risk associated with leaving severe aortic disease untreated.