Gauze

Gauze Bandages are common medical items used to treat wounds on a tribute. They are normally used to stop the bleeding of an open wound.

441st Hunger Games - Insanity
Gauze Bandages were common in the 441st Hunger Games, normally only found around the cornucopia. They cost $30, $50, $75, or $100 (depending on size) to be sponsored.

They first appearance of gauze in the games came when Tux Bowden's mentor sent him some for the injured Courtney Dax.

They were used (along with soap) to treat Miiko Dejong's shoulder wound she achieved in a fight with Nicholas Mecha, effectively cleansing and healing the wound.

Characters who have used Gauze Bandages.
These are all the characters who have ever wielded a scythe.
 * Miiko Dejong
 * Courtney Dax