Multi-select problem: How does the next paragraph end?

How to wear a holter monitor
Decide if you need to see the cardiologist.
If you believe you are having heart problems, you should schedule an appointment with a cardiologist. Your cardiologist will be able to counsel you on what the next steps should be and what tests they want you to undergo.

Choices:
(I) However, if you think you might be having heart problems and decide that their experience is of a healthier persuasion than what you were at the time of your notification, you could get a recommendation from a medical professional or radiologist. Determine if you need a 200fr monitor..
(II) Talk to your doctor about getting a holter monitor. Sometimes, it is just the look of your screen, and there are different instruments used for different conditions such as low blood sugar and diabetes..
(III) The cardiologist will be able to recommend questions you should ask them. They may ask how long you have had pain or if you have any issues with feeling slightly dizzy, dizziness, swelling, nausea, or vomiting..
(IV) If you don't have a cardiologist, schedule an appointment with your primary care provider and they will give you a referral to a cardiologist if you need one. Schedule an appointment with the cardiologist..
(IV)