Wound Healing

Which of the following growth factors is primarily responsible for angiogenesis during the proliferative phase of wound healing?

Which phase of wound healing is characterized by the predominance of type III collagen, and approximately how long does this phase typically last?

A 32-year-old woman undergoes elective cesarean section for breech presentation. On postoperative day 5, the surgical wound shows erythema, warmth, and serous drainage. On examination, the wound edges are well-approximated but the surrounding tissue is edematous. Histologically, the wound shows prominent fibroblast activity, neovascularization, and early collagen deposition. Which phase of wound healing is predominantly occurring at this stage?

A 32-year-old man presents with a surgical wound that has failed to heal 6 weeks after appendicectomy. Clinical examination reveals erythema, induration, and purulent discharge. The wound edges are not approximated. Which investigation is most appropriate to identify the causative organism and guide antimicrobial therapy?

A 32-year-old man sustains a laceration to his forearm during a workplace injury. Histological examination of the wound at day 5 post-injury shows predominant fibroblast activity and collagen deposition. Which is the most common type of collagen deposited during this phase of wound healing?