Smith & Nephew Cuticerin Low-Adherent Surgical Dressing

Question: I recently completed 4 weeks of Radiation treatments on my left breast following BC surgery (Stage 1). The site where my lymph nodes were removed has become quite inflamed & opened a bit. My surgeon just saw me last Fri and said to keep it dry as possible. Since it's right below my underarm, its difficult to keep gauze in place as I have to sue tape which hurts my sunburnt skin (post radiation) when removing. Any suggestions would be helpful? Thank you!

Question: How many of the dressings are in a packet? And what does pack and case mean? For example I know that 66045503 has 3 dressings that are 3x8 each. So is that 3 dressings per pack? So does 10 pack mean 30 dressings? How do you store the package once you have opened it?