Some drained doctors and nurses (5)
I believe the answer is:
tends
'nurses' is the definition.
(to tend someone is to look after or nurse them)
'some drained doctors' is the wordplay.
'some' becomes 'ten' (I can't justify this - if you can you should give a lot more credence to this answer).
'drained' suggests removing the centre.
'doctors' with its middle taken out is 'ds'.
'ten'+'ds'='TENDS'
'and' is the link.
Can you help me to learn more?
(Other definitions for tends that I've seen before include "Leans" , "nurses" , "Shows an inclination" , "Dresses" , "Dents (anag.)" .)