It is a very nice choice .
To become a cardiothoracic surgeon there are 3 things , that are
a bachelor degree withMBBS after 10+2.
PG course leading to Doctor of Medicine (MD) in general medicine.
After that three-year degree of MD, then go for the super specialty course of three year DM in Cardiothoracic
For more information about cardiothoracic surgeon oyou can visit below link
Thank you . I hope this answer helps you.