My understanding of ischemic pouchitis is that it is assumed when the inflammation is asymmetrical, as shown in the photos. Your ulceration seems pretty serious. Maybe you have more symptoms than you realize. We can get used to a lot of dysfunction, thinking it is normal. It is hard to know what is normal. I did not know until I had an acute case of food poisoning and was treated with antibiotics. It was then I discovered normal function.
Treatment for ischemic pouchitis is the same as other forms, more or less. There has been some use of hyperbaric oxygen therapy with mixed results. If you respond to antibiotics, good. There is conflicting opinion about the safety of long term antibiotics. My GI was not in favor of it and wanted me to go on Remicade rather than stay on antibiotics, even though I was on a rotation. Ischemic pouchitis is not always due to structural issues and surgical error, as the UC disease could be a contributing factor.
The main point is that each case should be treated individually. Pouch redo or ileostomy is a last resort, not a first resort. But, you do need to deal with the inflammation, since chronic inflammation is what leads to cancer. Still, do not panic. If you feel reasonably well, you are!
http://agaperspectives.gastro....chitis/#.X9VnVy077mo
Jan