Certified Wound Care Nurse (CWCN) Practice Exam

The type of wound healing that involves the reintroduction of growth factors is secondary intention healing. In secondary intention healing, wounds heal by granulation tissue formation, contraction, and epithelialization. This process often occurs in wounds where edges cannot be approximated, such as in large or contaminated wounds.

Growth factors play a crucial role in this healing method by promoting cell proliferation, migration, and angiogenesis, which are essential for the repair tissue and restoration of skin integrity. They help facilitate the healing process by enhancing the body's natural response to injury, breaking down the inflammatory phase, and promoting regeneration of granulation tissue.

Therefore, secondary intention healing, which relies on these biological processes and the presence of growth factors, is vital for effective wound repair in cases that do not allow for the direct closure of the wound edges.