B.Sc

Yes you can choose B.Sc. Cardiology after 12th. The eligibility criteria is given below. Eligibility: Students should have cleared 10+2 in Science from a recognised board or institution with a minimum aggregate score of 50 percent. They must have studied Physics Chemistry and Biology in the last qualifying examination.

The eligibility criteria for B.Sc. Courses at SRM Institute of Science and Technology, Ramapuram Campus Chennai are as follows:
Candidates must have passed 10+2 or equivalent examination from a recognised board with a minimum of 50% marks in aggregate. Candidates must have studied the relevant subjects as per the course requirements at the 10+2 level.

You should learn courses like data Science, cyber security, block chain etc. To compete with B.Tech CS students.

Fee structure at Madras Medical College for B.Sc Nursing is INR 19,553.