ROC (or whatever the residency guideline body is called) only allows one month of anesthesia during your intern year. This is done in any variety of ways. We do two months of anesthesia during our categorical year, but make the other month up in the SICU as an upper level. UTMB residents correct me if I'm wrong, but I think they do up to 6 months of anesthesia their first year and then make up those months their second year. (Awesome intern year, painful 2nd year)
Most programs are set up like Trisomy described. Categorical programs are usually designed to make intern year as applicable as possible. BTW, that is a pretty good intern year Trisomy.