# A nurse is assessing a surgical wound on postoperative day 5 and observes granulation tissue formation with wound edges approximating well. Which finding would indicate that the wound is progressing normally through the proliferative phase of healing?

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## 문제

A nurse is assessing a surgical wound on postoperative day 5 and observes granulation tissue formation with wound edges approximating well. Which finding would indicate that the wound is progressing normally through the proliferative phase of healing?

## 보기

1. Presence of fibrin clots and platelet aggregation at the wound site
2. Wound edges that are red, swollen, and warm to touch with purulent drainage
3. Pink, granular tissue filling the wound bed with new capillary formation **✔ 정답**
4. Complete re-epithelialization with mature collagen formation

**정답: 3**

## 해설

Pink, granular tissue with new capillary formation is characteristic of the proliferative phase, indicating normal healing. Other options describe inflammatory phase, infection, or maturation phase.

## 심화 해설

Understanding the Proliferative Phase

Wound healing proceeds through a predictable sequence: hemostasis, inflammation, proliferation, and remodeling. The proliferative phase, which typically begins around day 3 to 5 post-injury and continues for several weeks, is characterized by the formation of new tissue to fill the wound defect. During this phase, fibroblasts migrate into the wound, synthesize collagen, and support the development of new blood vessels (angiogenesis). The key macroscopic finding is the appearance of granulation tissue, which is pink or red, moist, and has a granular texture due to the dense network of new capillaries. This tissue fills the wound bed from the base upward, providing a scaffold for epithelial cell migration. The observation of wound edges approximating well indicates that contraction is occurring, a process mediated by myofibroblasts that helps reduce the wound size. High-frequency ultrasound studies have validated that this phase correlates with increased dermal vascularity and specific changes in tissue composition visible on imaging [1].

Analysis of the Correct Answer

**Option 3: Pink, granular tissue filling the wound bed with new capillary formation** is the correct finding. This description directly matches the clinical presentation of healthy granulation tissue, which is the hallmark of the proliferative phase. The pink color comes from the abundant new capillary loops (angiogenesis), and the granular appearance reflects the budding capillaries and collagen deposits. This finding confirms that the wound is progressing normally through this stage, as the body is successfully building new connective tissue and a vascular network to support further healing [2].

Analysis of the Incorrect Options

**Option 1: Presence of fibrin clots and platelet aggregation at the wound site** describes the hemostasis phase, which occurs immediately after injury. Platelet aggregation and fibrin clot formation are the first steps in wound healing, occurring within minutes to hours, not on postoperative day 5. While these processes are essential for providing a provisional matrix for cell migration, they are not characteristic of the proliferative phase [2].

**Option 2: Wound edges that are red, swollen, and warm to touch with purulent drainage** describes signs of a wound infection or an exaggerated, prolonged inflammatory response. While a mild, localized inflammatory response is normal in the early stages, the presence of purulent drainage and significant warmth on day 5 indicates a pathological process, not normal progression through the proliferative phase. This would require immediate intervention [1].

**Option 4: Complete re-epithelialization with mature collagen formation** describes the remodeling (maturation) phase. Re-epithelialization begins during the proliferative phase as epithelial cells migrate across the wound surface, but *complete* re-epithelialization and the replacement of initial type III collagen with mature, organized type I collagen are features of the final phase of healing, which can last for months to over a year. This is not expected on postoperative day 5 [2].

Clinical Application and NCLEX-RN Focus

For the NCLEX-RN, you must be able to differentiate the clinical findings for each phase of wound healing. The proliferative phase is often tested by its key term: granulation tissue. When you see a wound that is "beefy red" or "pink and bumpy," you should immediately associate it with this phase. A critical nursing responsibility is to protect this fragile new tissue. Granulation tissue is highly vascular and delicate, so wound care must be gentle to avoid disrupting new capillary formation and causing bleeding. Assessment should focus on the color, moisture level, and progression of wound bed filling. A pale or dusky wound bed could indicate poor perfusion, while excessive moisture can lead to maceration of the surrounding skin. Recognizing the normal timeline and appearance of granulation tissue allows the nurse to identify deviations, such as infection or delayed healing, and to select appropriate wound care products that maintain a moist wound environment conducive to ongoing proliferation [1, 2].References (research sources)

- [1]High-Frequency Ultrasound Evaluation of Cutaneous Surgical Wound Healing: An Outpatient Experience.Research articleRusso A, Patanè V, Bucciero L, Pezzella MC, Brunese M, Stanzione F, Faenza M, Reginelli A. (2026) · DOI: 10.1111/wrr.70136

- [2]Histological Evaluation of <i>Mentha spicata</i> Essential Oil in a Rat Excisional Wound Model with Network-Based Mechanistic Insights.Research articleYildirim C, Kayir N, Bal Albayrak MG, Yozgat AH, Sen DS. (2026) · DOI: 10.3390/biomedicines14040739

## 임상 시나리오

Wound Healing Phase AssessmentDifferentiating Proliferative Phase Findings
The proliferative phase typically begins on postoperative day 3 to 5 and lasts for several weeks. The key macroscopic finding is granulation tissue, which appears pink or red, moist, and granular due to dense new capillary formation (angiogenesis).

Wound edges that are well-approximated indicate normal contraction mediated by myofibroblasts. This tissue fills the wound bed from the base upward, providing a scaffold for epithelial cell migration.

CautionDo not confuse normal granulation tissue with signs of infection. Purulent drainage, increased warmth, swelling, and erythema suggest wound infection, not healthy proliferation. Also, mature scar formation is a feature of the later remodeling phase.

## 핵심 개념

- **Proliferative Phase** — The second phase of wound healing, starting around day 3-5, characterized by fibroblast migration, collagen synthesis, angiogenesis, and granulation tissue formation.
- **Granulation Tissue** — New connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process; appears pink/red, moist, and granular.
- **Angiogenesis** — The physiological process through which new blood vessels form from pre-existing vessels, a critical component of the proliferative phase.
- **Wound Contraction** — A process mediated by myofibroblasts during the proliferative phase that pulls wound edges together to reduce the wound size.

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