The nurses union fears more violent incidents will take place unless something changes.
A Wairarapa Hospital visitor suffered a skull fracture after being attacked with a machete in the emergency department on Saturday night.
In December, the Government temporarily boosted security staff at a number of hospitals til the end of February.
Nurses Organisation President Kerri Nuku told Mike Hosking that de-escalation training needs to go across the board.
She wants nurses involved in conversations around what to do.
LISTEN ABOVE

Mike's Minute: The most important thing the Govt has done this term
01:53

Maria Sten and Greyston Holt: Stars of Reacher spinoff Neagley on the making of the show
09:07

Dr John Cameron: Registered GP on the concern that adult ADHD is being over-diagnosed
03:04