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
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?
Type I collagen is the most abundant collagen in the body.
Where do epithelial cells come from in wounds healing from secondary intention?
B. Hair follicles, sebaceous glands, and skin edges
Epithelial cells from these structures migrate out and cover the wound bed.
What nutritional parameter has a half-life of about 20 days?
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?
B. Staphylococcus epidermis
C. Streptococcus pyogenes
Staphylococcus aureus is the most common pathogen in osteomyelitis; however, these infections are often polymicrobial.
Wounds heal best in what type of environment?
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?