Support hospital governance arrangements later time will abandon (5)
I believe the answer is:
truss
'support' is the definition.
(type of architectural support)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for truss that I've seen before include "Type of support" , "Supporting framework" , "Tie up - bind" , "Padded device worn to support a hernia" , "Surgical appliance" .)