This 59-year-old male has been experiencing cardiac symptoms. Today he is receiving a Holter monitor for the next 24 hours. He was instructed to leave the monitor on for the next 24 hours while he is conducting his normal activities. He is also to keep an activity diary of his daily events so his activities can be compared to the electrocardiographic tracing. He is to return to me in 2 days. Required:
a. What is the root operation for this case?
b. What is the approach?
c. What is the function/device in this case?