Serous Wound Drainage Types of Wounds Understanding wound classification helps in accurate assessment, proper management, and correct dressing selection. Open wounds involve a break in skin integrity, while closed wounds have underlying tissue damage To learn more about wound dressing and many other First Aid skills, don't hesitate to contact or visit our Centres for training at: 102 Baines Avenue, HARARE +263 242 253046, 242 764354, 3M AbThera Advance Open Abdomen Dressing