Certified Wound Ostomy Nurse (CWON) Practice Test

What are the two types of MMP inhibitors?

1. Gel-based and foam dressings

2. Collagen-ORC matrix products and PHI ointment

3. Antimicrobial and hydrogel dressings

4. Silver-infused and alginate dressings

The correct answer is: Collagen-ORC matrix products and PHI ointment

The identification of the two types of matrix metalloproteinase (MMP) inhibitors as collagen-ORC (oxidized regenerated cellulose) matrix products and PHI (perlanta hydrogel) ointment is accurate. Matrix metalloproteinases play a crucial role in wound healing, and their inhibitors are essential in managing chronic wounds where excessive MMP activity can impede healing. Collagen-ORC matrix products are designed to provide a scaffold for tissue regeneration and inhibit MMPs, thereby promoting a more favorable wound healing environment. PHI ointment also serves as a protective barrier while reducing MMP activity, further facilitating tissue repair. Both options have specific mechanisms that aim to balance MMP activity and support optimal healing. The other choices, while relating to wound care, do not accurately represent types of MMP inhibitors. Gel-based and foam dressings are primarily designed for moisture management rather than inhibiting MMPs. Antimicrobial and hydrogel dressings focus on managing infection and providing hydration, respectively, rather than specifically targeting MMPs. Silver-infused and alginate dressings have their benefits in antibacterial properties and moisture control but do not function as MMP inhibitors.