What a conscientious nurse makes on reaching hospital? Easy (15)

I believe the answer is:
straightforward
'easy' is the definition.
(I've seen this before)
'what a conscientious nurse makes on' is the wordplay.
'what a conscientious nurse makes' becomes 'straight' (I can't justify this - if you can you should give a lot more credence to this answer).
'on' becomes 'forward' (I've seen this in other clues).
'straight'+'forward'='STRAIGHTFORWARD'
'reaching hospital?' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for straightforward that I've seen before include "That's simple" , "Easy to understand" , "Honest, open" , "Clear" , "Uncomplicated" .)
