Chapter 9: Wound Healing

Chapter 9. Wound Healing

What determines if a scar is hypertrophic or keloid?

A. Amount of scar elevation

B. Borders of scar tissue extend beyond incision

C. Associated erythema

D. Results from biopsy

Hypertrophic scars can be raised and erythematous, but do not extend beyond the borders of the incision laterally.

What is the most abundant collagen in the body?

A. Type I

B. Type II

C. Type III

D. Type IV

Type I collagen is the most abundant collagen in the body.

Where do epithelial cells come from in wounds healing from secondary intention?

A. Base of wound

B. Hair follicles, sebaceous glands, and skin edges

C. Capillary ingrowth

D. Basement membrane

Epithelial cells from these structures migrate out and cover the wound bed.

What nutritional parameter has a half-life of about 20 days?

A. Transferrin

B. Albumin

C. Prealbumin

D. Retinal-binding protein

Albumin has a long half-life compared to the other nutritional parameters and can give the clinician an idea of the nutritional status of patients.

What is the most common organism found in osteomyelitis?

A. Staphylococcus aureus

B. Staphylococcus epidermis

C. Streptococcus pyogenes

D. Escherichia coli

Staphylococcus aureus is the most common pathogen in osteomyelitis; however, these infections are often polymicrobial.

Wounds heal best in what type of environment?

A. Dry

B. Moist

C. Wet

D. Warm

A moist environment is best for wound healing; however, it is imperative that wounds are not frankly wet, as this can cause stagnant fluid to form, which is a great environment for bacteria.

A superficial surgical site infection (SSI) is considered when?