DEAR DOCTOR K: My doctor says I have "sick sinus syndrome." What is it?
DEAR READER:Your question reminded me of something that happened many years ago. A new patient came to my office. She told me that a colleague of mine had been her doctor, but she had stopped seeing him because "he didn't know what he was talking about." When I asked her to explain, she said that she had been weak and had almost fainted several times. At other times, her heart suddenly seemed to be beating too fast.