I am having an aortic valve replacement through the NHS system ( and have found this website very helpful). I agree with Paleogirl, you can have your choice, but you have to plan it by choosing the surgeon who in his usual practice is experienced in the operation / uses the valve which you want. Valve repair may be an option, but in general you will be steered towards mechanical if young, and tissue if old (with a grey area in the middle) but, within this, surgeons and hospitals will have their favourite makes of valve. Eg my hospital within tissue valves uses the perimount magna and St Jude trifecta valves, but doesn't use stentless valves at all. So if you have strong opinions about a particular operation or valve make sure you are referred to the right surgeon or hospital at the beginning of the process - and talk things over with your cardiologist: you may change your mind!
You have a right to your choice of hospital. Obviously you would want a tertiary cardiac hospital with a specialist aneurysm programme (I think in your position that would be more important to me than any make of valve). Waiting times can be quite long at present, thanks to funding issues, and choice comes with a lot of red tape, so if you need to change hospital you should start the process early on before you actually need surgery. I decided to change surgeons to get a different operation, but even within the same hospital this took some time. I am happy with my choice, but I wish I had made it at the beginning!
I'm not aware of any national UK guidelines for aorta replacement - ask your cardiologist - but patient.co.uk says:
'Asymptomatic TAAs are assessed to evaluate the relative risks/benefits of surgery. The risk of rupture depends on:
Aneurysm diameter. This is the most important factor predicting rupture. Generally, aneurysms of diameter >5.5 cm (ascending aorta) or >6 cm (descending aorta) merit repair.
Using body surface area as well as aneurysm diameter gives a more accurate risk profile.
Patients with Marfan's syndrome or a strong family history of TAA merit surgery earlier (at a smaller aneurysm diameter).
The rate of expansion is also important.'
So it seems there is no great rush.