Hello quovadis, i am new respiratory grad in canada, i am trying to enroll in nursing just to combine the 2. respiratory therapy is hard on technical (ie. mechanical ventilation, pulmonary function, xrays, lots of a/w management tools - bronchoscopes, laryngoscopes, etc) if you have a mechanical/techical aptitude - go for it. Most RTs deal with patients that are critically ill (ICU) so alot of their assesment are based here - lungs / cardiovascular/ etc. If you like working with people and patient interaction then go for nursing, much more goes into assessment and patient care. In terms of basic science, physics / chemistry is not a big deal. The only importance of chemistry is ACID/BASE but you have a full course on that. If you do decide for RT, know your ANATOMY (upper a/w) lots of testing during your clinicals at emerge for that to make sure u know your placements. mechanical ventilation will not be too bad - just lots of practice. RESP patho will be the most critical subject, you need this knowledge to apply your theory during clinicals. I was originally into nursing but i was in a waitlist, so i decided to look RT up before going for RN. I loved RT so much, that i decided to finish the program. Now I'm applying to schools and getting credit for some of the courses. hope this helps.