If you wish to be an ECG Technician, then you have to complete the course of Diploma in Electrocardiogram Technology course. The course is a 3 years diploma course in paramedical sciences. After the completion of the course, you can get various opportunities in Private/Government/Medical pathological labs etc.

For more information regarding the course consider the link below:

https://www.careers360.com/courses/ecg-technician-course

I hope this helps. Wish you a great eve!