Grade 3 Neonatal Tachyarrhythmia, AE

**Semantic type:** Finding

**Definition:** A tachyarrhythmia adverse event in a newborn resulting in non-life threatening hemodynamic compromise or changes in age-appropriate behavior; requiring major care changes (e.g. new medication or intervention).

**Synonyms:** - Grade 3 Neonatal Tachyarrhythmia - Grade 3 Neonatal Tachyarrhythmia, Adverse Event