noun, masculine/sɥi.vi/plural: suivis
suivi is masculine in French.
following; follow-up; monitoring, ongoing care or treatment (medical); tracking (package; number); keeping track, keeping a record
“Frappé par cette contradiction, il décida de conserver un suivi du traitement qu'on leur réservait tout au long de leur voyage.” — Struck by this contradiction, he decided to keep track of the treatment they received over the course of their trip.