Hello - I'm looking forward to helping you solve your problem and welcome to Just Answer. I am a vascular surgeon (retired US based) and I think I can give you some advice but finding the statistics you request is difficult. In regard to those statistics, "figures don't lie but liars can figure." These statistics are not often based on outcomes alone and may not represent the successes (or failures) of any particular surgeon or the complication rate of an institution.
The best course of action for you is to obtain a consult and then a second (or third) opinion and then go with the one that makes most sense to you and the doctor with whom you feel most comfortable.
If you have a specific question about mesenteric ischemia I would be glad to discuss that with you or review a consultation with you after you have discussed it with a potential vascular surgeon.