How does Hypothyroid affect WLS?

I am a nurse and also hypothyroid (low thyroid) and wanting WLS. I haven't seen any research related to hypothyroidism and WLS. Can other hypothyroid patients who have had WLS out there let me know about how much weight they lost at 2,4,8,10 and 12 months post surgery? I plan to look through as many journals as I can to compare Normal thyroid and hypothyroid? This is one of the reasons that I am opting for the RNY instead of AGB. I just want to double check. By the way, I am just getting started with the whole process. I saw my bariatric surgeon in Lubbock, TX yesterday.