follow-up

Short definition from Wiktionary

Noun

1. 1
   A subsidiary action taken in response to an event.
2. 2
   A posted message on a newsgroup, etc. in reply to a previous one.
3. 3
   A shot on goal directly following another that has been saved.
4. 4
   The revisiting of a patient in ambulatory care.

Verb

1. 1
   Nonstandard form of follow up.
2. 2
   To take further actions remaining after an event; to continue, revisit, or persist; especially, to maintain communication or verify.