How does a surgical incision typically heal when it approximates well?

When a surgical incision approximates well, it typically heals by primary intention. This process occurs when the edges of the wound are brought together, or approximated, and held in place, allowing the body to heal with minimal tissue loss. In primary intention healing, the wound is usually clean, and as the edges come together, granulation tissue forms, followed by a formation of epithelial tissue to close the incision.

This type of healing generally results in a scar that is smaller and less noticeable compared to other healing methods, as there is less inflammation and a reduced risk of infection. Factors like maintaining a sterile environment, proper wound care, and ensuring the incision site is kept approximated contribute positively to healing by primary intention.

In contrast, healing by secondary intention occurs when the wound edges are not approximated, which leads to healing from the bottom up, often resulting in a larger scar. Tertiary intention refers to delayed primary closure, where a wound is left open for a time due to infection or other issues before being closed. Delayed intention is not a standard term used in wound healing contexts. Thus, primary intention is the most appropriate and correct response for surgical incision healing when well approximated.