My mother is going through a heart valve replacement surgery soon. This is the only solution for her disease. We recently learned that for valve replacement porcine Valves are used which are pig’s valve or made from pig valve tissues. The other option for valve is not working well for us and might have complications. I wanted to know if this is allowed or not. Will it make her Najas or what are religious consequences for her?

This is permissible. It will not make her najes. There are no religious consequences.