CRNFA Wound Closure and Healing

Question 1

A wound that is intentionally left open to granulate from the base is healing by which intention?

Accepted Answer

Secondary intention

Answer

Secondary intention healing occurs when a wound is left open and fills in from the base by granulation tissue formation, contraction, and re-epithelialization.

Question 2

Which suture material is most appropriate for a contaminated abdominal wound requiring fascial closure?

Accepted Answer

Polydioxanone (PDS) — monofilament slowly absorbable

Answer

Monofilament slowly absorbable sutures like PDS are preferred in contaminated wounds because they provide prolonged tensile strength and their monofilament structure harbors fewer bacteria than braided sutures.

Question 3

The greatest tensile strength of a wound scar compared to original tissue is approximately what percentage at full maturation?

Accepted Answer

80%

Answer

A mature scar achieves approximately 80% of the original tissue tensile strength due to reorganization of collagen fibers, but never fully equals normal tissue.

Question 4

Which phase of wound healing is characterized by fibroblast proliferation and collagen deposition?

Accepted Answer

Proliferative phase

Answer

The proliferative phase (days 4–21) is dominated by fibroblast migration and collagen synthesis, along with angiogenesis and wound contraction.

Question 5

A retention (stay) suture is used in abdominal closure primarily for which purpose?

Accepted Answer

To add supplemental strength in high-risk patients prone to dehiscence

Answer

Retention sutures are large, through-and-through sutures placed to provide additional fascial support in obese, malnourished, or immunocompromised patients at high risk for wound dehiscence.

CRNFA - Certified Registered Nurse First Assistant Practice Test

CRNFA - Certified Registered Nurse First Assistant Practice Test

CRNFA Wound Closure and Healing