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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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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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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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B. Hair follicles, sebaceous glands, and skin edges
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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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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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B. Staphylococcus epidermis
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C. Streptococcus pyogenes
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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 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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