What does an abnormal ECG mean?

An ECG (electrocardiogram) is a simple test that records the electrical activity of the heart. It is commonly used to investigate symptoms such as palpitations, chest discomfort, or dizziness. An “abnormal” ECG does not necessarily mean there is a serious problem. In many cases, changes can be minor or non-specific, and may not reflect underlying heart disease.

However, certain findings may require further assessment. These can include:

Changes suggesting a heart rhythm abnormality
Evidence of previous strain on the heart
Patterns that may indicate underlying structural heart disease

The key is interpreting the ECG in the context of your symptoms and overall clinical picture.

A specialist assessment may involve:

A detailed clinical review
Repeat ECG or heart rhythm monitoring
Imaging such as echocardiography or, in selected cases, cardiac MRI for more detailed evaluation

Importantly, many patients can be reassured following appropriate assessment, without the need for extensive testing. The aim is to provide clarity while avoiding unnecessary investigations.

Dr Sanjay Bhandari provides a structured approach to the assessment of abnormal ECG findings, with particular expertise in advanced cardiac imaging. He performs over 400 cardiac MRI scans and 400 advanced echocardiography studies each year.

If you have been told your ECG is abnormal, a specialist consultation can help clarify the significance and determine whether any further investigation is needed.