Hi, may I answer your health queries right now ?  Please type your query here... Two years ago, my cardiologist gave me a (duplex) test that showed no plaque buildup in the left carotid & 20 % on the right. Recently, he gave me another that showed 60 - 79% on left and 40% on right. I am 64 years old, female, not overweight, with established heart disease. I am appalled at the pace at which this condition has changed. What is the typical pace at which plaque builds in the carotid and, at the rate Im going, can I expect the left carotid to be blocked significantly more in even a year?
Hereafter reading the medical details provided by you, I would like to tell you that atherosclerotic disease of the vessels has a high variability, the disease progression is variable for every patient. So it's not predictable to tell at what pace the disease will progress.However, in your case at least we know it progressing at a fast rate so It's advisable to take precautions as advised by your treating doctor. Also, you need to start STATINS to slow down the progression. I wish you good health