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.
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Correct Answer is A
Explanation
Choice A reason: This is the highest priority client because sudden and increasing pain in a fractured arm can indicate a complication, such as compartment syndrome, infection, or nerve damage. Compartment syndrome is a condition where the pressure inside the muscles increases to dangerous levels, causing severe pain, reduced blood flow, and tissue death. Infection is a condition where microorganisms invade the wound site, causing inflammation, pus, and fever. Nerve damage is a condition where the nerves are injured by the fracture, causing numbness, tingling, or weakness. The nurse should see this client first and assess the arm for any signs of these complications, such as swelling, pallor, loss of sensation, or impaired movement. The nurse should also elevate the arm, loosen any bandages or casts, and administer pain medication as ordered.
Choice B reason: This is not the highest priority client because a fractured ankle is a common and stable condition that affects the lower extremity. A glass of water is a comfort and hydration need that can be met by the nurse or another staff member. The nurse should see this client after the more urgent clients and provide the glass of water, as well as monitor the ankle for any signs of complications, such as edema, infection, or impaired circulation.
Choice C reason: This is not the highest priority client because rheumatoid arthritis is a chronic and manageable condition that affects the joints. A scheduled pain medication is a routine and preventive need that can be met by the nurse or another staff member. The nurse should see this client after the more urgent clients and administer the pain medication, as well as assess the joints for any signs of inflammation, stiffness, or deformity.
Choice D reason: This is not the highest priority client because a discharge teaching is a discharge and education need that can be met by the nurse or another staff member. The nurse should see this client last and teach the client how to use the crutches, as well as provide any other discharge instructions, such as wound care, activity restrictions, or followup appointments.
Correct Answer is B
Explanation
Choice A reason: A susceptible host is not an infectious disease, but a factor that influences the transmission of an infectious disease. A susceptible host is a person who is vulnerable to infection due to factors such as age, health status, immunization, or genetic predisposition. A susceptible host may become infected by a communicable disease, but it is not the disease itself.
Choice B reason: A communicable disease is an infectious disease that can be transmitted directly from one person to another. A communicable disease is caused by a pathogen, such as a virus, bacterium, fungus, or parasite, that can spread through contact, droplet, airborne, vector, or vehicle transmission. Examples of communicable diseases are influenza, tuberculosis, measles, malaria, and HIV/AIDS.
Choice C reason: A portal of entry to a host is not an infectious disease, but a factor that influences the transmission of an infectious disease. A portal of entry to a host is a route through which a pathogen can enter the body of a susceptible host and cause infection. A portal of entry to a host may be a break in the skin, a mucous membrane, or a body opening, such as the mouth, nose, eyes, or genitals. A portal of entry to a host may facilitate the transmission of a communicable disease, but it is not the disease itself.
Choice D reason: A portal of exit from the reservoir is not an infectious disease, but a factor that influences the transmission of an infectious disease. A portal of exit from the reservoir is a route through which a pathogen can leave the body of an infected person or animal and reach another susceptible host. A portal of exit from the reservoir may be a body fluid, such as blood, saliva, urine, or feces, or a body part, such as the skin, hair, or nails. A portal of exit from the reservoir may enable the transmission of a communicable disease, but it is not the disease itself.
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