What kind of artifact does a wandering baseline in an EKG tracing indicate?

A wandering baseline in an EKG tracing indicates that there is a change in the baseline level of the EKG, which can often be attributed to several factors affecting the quality of the recording. This type of artifact occurs when the baseline signal fluctuates, resulting in an irregular wave that does not remain stable.

In the context of an EKG, a wandering baseline can happen for reasons such as patient movement, variations in skin contact with the electrodes, or shifting or improperly placed leads. When the baseline drifts up and down, it creates a challenge for interpreting the actual heart rhythms because the true electrical activity of the heart is obscured.

Although the term "wandering baseline" could imply a specific artifact, it is also a direct description of the phenomenon being observed in the trace. This term effectively captures the essence of the problem since the primary indicator of this artifact is the baseline's variation rather than interference or movement alone. Understanding this helps medical professionals troubleshoot and address potential issues during an EKG recording, ensuring accurate diagnosis and treatment.