Pressure on nurse to fake it (7)
I believe the answer is:
pretend
'fake it' is the definition.
(I've seen this in another clue)
'pressure on nurse' is the wordplay.
'pressure' becomes 'p' (abbreviation).
'on' becomes 're' ('on' can be mean 'with reference to').
'nurse' becomes 'tend' (tend can mean to nurse or look after).
'p'+'re'+'tend'='PRETEND'
'to' is the link.
(Other definitions for pretend that I've seen before include "Make believe - imply falsely" , "Imagine" , "Dissemble" , "Simulated" , "Profess falsely" .)