What is the typical frequency for repeating a 12-lead ECG in patients with existing cardiac conditions?

The typical frequency for repeating a 12-lead ECG in patients with existing cardiac conditions is generally annual or aligned with the onset of new symptoms. This approach allows for thorough monitoring of the patient's cardiac health while avoiding unnecessary testing. Regular assessments can help detect changes in cardiac function, which may indicate the progression of a condition or the development of new issues.

Conducting follow-up ECGs annually or whenever new symptoms emerge ensures that any changes in the patient’s baseline ECG readings are captured in a timely manner, allowing for prompt intervention if necessary. This is particularly important for managing chronic cardiac conditions effectively, where symptoms may fluctuate. While other frequencies may seem reasonable, they do not align with best practices in patient monitoring for existing cardiac conditions.