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What is Wound with bloody discharge belongs to which grade as per Southampton wound grading system and explain in detail?
Southampton wound grading system for healing and injection :

Grade 0 is normal healing.
Grade 1 is with bruising / mild erythema.
Grade 2 is severe erythema with other features of inflammation at or around wound.
Grade 3 is serous or bloody discharge.
Grade 4 is presence of pus or deep infection or tissue break - down or significant haematoma.