Grade 4 Neonatal Pneumothorax, AE

**Semantic type:** Finding

**Definition:** A pneumothorax adverse event in a newborn characterized by life-threatening respiratory and/or hemodynamic compromise (e.g. tension pneumothorax); urgent major care change required.

**Synonyms:** - Grade 4 Neonatal Pneumothorax - Grade 4 Neonatal Pneumothorax, Adverse Event