A method for extracting segments from an electrocardiogram tracing is disclosed. The method selects an electrocardiogram tracing for segment extraction, and associates a dosing time or other time point with the electrocardiogram tracing to align an extraction template within the electrocardiogram tracing for segment extraction. The electrocardiogram tracing is scanned for artifacts and the electrocardiogram tracing is annotated if any artifacts are discovered. If there are any artifacts present in the segment designated for extraction by the extraction template, the extraction template is modified to avoid the artifacts. If the extraction template cannot be modified, the electrocardiogram tracing is annotated as unextractable. If artifacts are not present in the segment designated for extraction by the extraction template or the extraction template was successfully modified, the designated segment is extracted from the electrocardiogram tracing and written to a storage medium.