A client is recovering from a fractured radius that occurred 8 weeks ago. In which stage of bone healing is the callus resorbed and transformed into bone?
Stage 4
Stage 3
Stage 5
Stage 1
The Correct Answer is A
Choice A reason: Stage 4 is the remodeling stage of bone healing, which occurs from 6 to 12 weeks after the fracture. In this stage, the callus, which is a mass of fibrous tissue and cartilage that forms around the fracture site, is gradually resorbed and replaced by mature bone. The bone becomes stronger and more compact and regains its original shape and function.
Choice B reason: Stage 3 is the callus formation stage of bone healing, which occurs from 2 to 6 weeks after the fracture. In this stage, the granulation tissue, which is a soft tissue that fills the fracture gap, is replaced by a callus that bridges the fracture ends. The callus is composed of fibroblasts, chondroblasts, and osteoblasts that produce collagen, cartilage, and bone matrix. The callus stabilizes the fracture and prepares it for remodeling.
Choice C reason: Stage 5 is not a valid stage of bone healing. There are only four stages of bone healing: stage 1 is the inflammatory stage, stage 2 is the reparative stage, stage 3 is the callus formation stage, and stage 4 is the remodeling stage.
Choice D reason: Stage 1 is the inflammatory stage of bone healing, which occurs from the time of the fracture to 3 to 5 days after the fracture. In this stage, the blood vessels around the fracture site are ruptured and form a hematoma, which is a blood clot that surrounds the fracture ends. The hematoma triggers an inflammatory response that involves the release of cytokines, growth factors, and inflammatory cells that initiate the healing process. The hematoma also provides a scaffold for the granulation tissue to grow.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Creating a susceptible host is not a way to break the chain of infection, but rather a way to facilitate it. A susceptible host is someone who is vulnerable to infection due to factors such as age, immunocompromised status, or chronic diseases.
Choice B reason: Maintaining the integrity of a portal of entry is a way to break the chain of infection, because it prevents the entry of microorganisms into the body. A portal of entry is any place where microorganisms can enter the body, such as the skin, mucous membranes, or respiratory tract. By reducing skin breakdown, the nurse is protecting the skin from becoming a portal of entry for infection.
Choice C reason: Creating a reservoir to decrease the risk of infection is a contradiction, because a reservoir is a place where microorganisms can multiply and survive, such as a human, animal, or environment. A reservoir increases the risk of infection, not decreases it.
Choice D reason: Sterilizing the area to reduce the reservoir risk is a way to break the chain of infection, but it is not related to reducing skin breakdown. Sterilizing the area means killing or removing all microorganisms from a surface or object, such as a surgical instrument or a wound dressing. This can reduce the reservoir risk, but it does not affect the integrity of the skin as a portal of entry.
Correct Answer is B
Explanation
Choice A reason: "I will use a humidifier during the winter months." is not the correct answer, because it indicates a good understanding of dry skin. Using a humidifier during the winter months is a helpful measure to prevent or treat dry skin, as it can increase the moisture level in the air, which can hydrate the skin and reduce the loss of natural oils.
Choice B reason: "I will shower every day in hot water." is the correct answer, because it indicates a need for further teaching about dry skin. Showering every day in hot water is a harmful practice that can worsen dry skin, as it can strip the skin of its natural oils, damage the skin barrier, and cause irritation and inflammation.
Choice C reason: "I will avoid tight belts." is not the correct answer, because it indicates a good understanding of dry skin. Avoiding tight belts is a helpful measure to prevent or treat dry skin, as it can reduce the friction and pressure on the skin, which can prevent skin breakdown and infection.
Choice D reason: "I will drink at least 3000 mL of water daily." is not the correct answer, because it indicates a good understanding of dry skin. Drinking at least 3000 mL of water daily is a helpful measure to prevent or treat dry skin, as it can hydrate the body and the skin, and flush out toxins and waste products.
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