Does a heart attack always produce symptoms?
A. Just as some people experience no symptoms during silent ischemia, some people can have a silent heart attack without knowing it. Up to 25 percent of heart attacks are symptom-free. Of course, the absence of symptoms does not mean the absence of damage to the heart muscle. Unfortunately, people having a silent heart attack are unaware that they need to seek proper treatment immediately and additional heart-related events or damage may occur.
