which will be best bsc operation theater technology or cardiac care technology?

Hey!
The answer to your query should be wholly dependent upon your interest. If you find your interest more in cardiology , then go for cardiac care otherwise operation theatre , provided these are the two only options.
Now if interest isn't a major factor here , then if choosing money as the factor , you should go for operation theatre as it has the potential to offer you more salary than cardiac care.
Below i am mentioning all the important aspects related to both the courses:
B.Sc Cardiac Care Technology

Duration: 3 years
Course Fees Range: Rs 1,000 tp Rs 4 Lakhs
Top Job Profiles: Cardiovascular Technologist, Cardiologist, Medical Sonographer etc
Average Starting Salary: 20,000 INR to INR 2 Lakhs

Top Colleges:
Christian medical College
Geentanjali medical College and Hospital
Rajiv Gandhi Paramedical Institute
MGMHIS
JIPMER


BScOperation Theatre

Duration: 3 years

Average Course Fees: Rs 50,000 to Rs 10 lakhs

Top Job Positions:Lecturer, OT Technician,Consultant,Anaesthectic Consultant,Lab Technician etc.

Salary Range: Rs 2 lakhs to Rs 10 Lakhs

Top Colleges:

SGT University

Christian Medical College

NIMS

Government Medical College

University of Technology