Thank you for your question. I'm sorry to hear about your situation, but the best person to ask this question is your primary care doctor or cardiologist. I highly recommend you consult with either doctor regarding your questions and concerns. Take care and good luck.
I suggest a consult and starting in offie PRP/acell and at home theradome (see link).
You need a formal evaluation to see what type of hair loss you may have. when you have hairless its best to do a full hormonal workup for internal optimization plus scalp biopsies or scrapings to rule out any...