An IAU, or Intravenous Access Unit, refers to a specific type of catheter. These catheters were employed by 2-1B surgical droids when addressing enzyme eruptions affecting the hearts of individuals belonging to the Pui-ui species. During the operation to save Gebnerret Vibrion from the Selnesh Imperial Detention Center, Doctor Aurin Leith utilized such a unit. Specifically, she administered Clondex and other therapeutic drugs through it to manage his Zithrom's syndrome.