Medical Definition of follow up
: to maintain contact with (a patient) at one or more designated intervals following diagnosis or treatment especially to examine again or monitor the progress of therapy <patients who are followed up after their discharge> <She was discharged on postoperative day 4 and was followed up in the surgery clinic 19 days postoperatively.—Steven L. Bloom et al., The New England Journal of Medicine, 21 Oct. 2010>
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