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Chapter 9. Wound Healing

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What determines if a scar is hypertrophic or keloid?

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A. Amount of scar elevation

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B. Borders of scar tissue extend beyond incision

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C. Associated erythema

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D. Results from biopsy

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

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What is the most abundant collagen in the body?

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A. Type I

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B. Type II

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C. Type III

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D. Type IV

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

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

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A. Base of wound

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B. Hair follicles, sebaceous glands, and skin edges

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C. Capillary ingrowth

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D. Basement membrane

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

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

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A. Transferrin

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B. Albumin

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C. Prealbumin

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D. Retinal-binding protein

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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.

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What is the most common organism found in osteomyelitis?

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A. Staphylococcus aureus

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B. Staphylococcus epidermis

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C. Streptococcus pyogenes

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D. Escherichia coli

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

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Wounds heal best in what type of environment?

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A. Dry

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B. Moist

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C. Wet

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D. Warm

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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.

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

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