Rationale and key points

A 12-lead electrocardiogram (ECG) is a painless procedure commonly undertaken in healthcare practice. An ECG machine uses cables or ‘leads’ attached with stick-on electrodes to specific parts of the body to create a series of ECG traces, which are then printed onto graph paper. This provides a recording of the cardiac electrical activity measured from different angles or perspectives.

• A 12-lead ECG is a valuable diagnostic tool that has proven effective in detecting various cardiac abnormalities or enabling healthcare professionals to rule them out.

• It is a cost-effective investigation that can be performed by any appropriately trained healthcare professional.

• Careful preparation and correct electrode and lead placement are crucial to ensure accuracy when recording a 12-lead ECG.

Reflective activity

How to’ articles can help to update your practice and ensure it remains evidence-based. Apply this article to your practice. Reflect on and write a short account of:

• How this article might improve your practice when recording a 12-lead ECG.

• How you could use this information to educate students or colleagues about the preparation and recording of a 12-lead ECG.