Hi Nocolon 2000.Sorry i don,t know your real name.
Since having my pouch done I hve had 3 sinus/nose operations done,polyp removal and more drains made in my sinuses and they have all worked unfortunately the polyps for me tend to grow back so I get them removed every few years.
The only effect it has on my pouch is that I don,t have any bowel movements for about 24 hours after the op which I think is great but I am on no medication at all.
In your case I would definatley discuss this with the Nose surgeon and Anathesist and be guided by what they say.
Best Regards from Australia.