This standard extends the base ISO/IEEE 11073-10101:2004 to provide support for ECG annotation
terminology. Major subject areas addressed by the nomenclature include ECG beat annotations, wave
component annotations, rhythm annotations, and noise annotations. It also defines additional "global" and
"per-lead" numeric observation identifiers, ECG lead systems, and additional ECG lead identifiers. The
nomenclature extensions may be used in conjunction with other IEEE 11073 standard components (e.g.,
ISO/IEEE 11073-10201:2004 [B19]2) or independently with other standards.