A little word to the wise: I recruit for our residency program, and upwards of 80% of anesthesia applicants rank ICU as their #1 interest. Suffice it to say a MUCH lower number end up in critical care. I think there are a lot of reasons for this: ICUs tend to be amazing medical student rotations (high acuity, lower census, more staff, procedures, teaching), and I think the discussions around the future of anesthesiology are selecting for applicants interested in careers outside the operating room. But by the time they get through anesthesia residency, many come to believe ICU equals more/less predictable hours, for less pay. Also, in Medicine, the peak acuity occurs in the MICU (excluding the ED/cath lab/endo suite), as opposed to surgical critical care: peak acuity is *often* encountered in the OR, because that's where surgeons and anesthesiologists feel most comfortable. Once the patient is "stabilized" they go to the unit (obviously there are unstable people in the unit, but the things people love about critical care as a medical student ie lines/intubation/acute pressor and fluid management, occur frequently enough in the OR). Also, many people realize "sick" and "trauma" often equals "pain in the a$$", and get more than their fill in residency.
I'm not saying all this to tell you you won't go into critical care- you might... but probably not. Pick your training program based on a broad experience that's going to give you ALL of the options so if you change your mind it will be less of an uphill battle.
-Nivens, CT/ICU fellow, c/o 2021