Our expert says:
You do not mention your mothers age. A fast heart beat is often a case of the heart simply responding appropriately to something outside the heart eg anaemia, anxiety, exercise, fever etc - in other words the heart is just doing what the body is telling it to do.
A high heart rate is also not necessarily related to blood pressure. Sometimes the heart is fast and blood pressure low because the heart is weak, but then usually there are other tell-tale symptoms which you do not mention. Is it possible your mother's high heart rate is simply due to anxiety?
For peace of mind please see the cardiologist, who I am sure will do and ECG and echocardiogram and should then be able to answer your questions. What he recommends in the way of treatment will obviously depend on the cause of the fast heart beat.
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