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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Related Questions
Correct Answer is B
Explanation
Choice A reason: This is not the correct answer because a skin infection is not transmitted by airborne droplets. A skin infection is usually caused by bacteria, fungi, or parasites that invade the skin and cause inflammation, redness, itching, or pus. A skin infection can be contagious by direct contact with the infected area or by sharing personal items, such as towels, clothing, or razors. The client with a skin infection should be placed in isolation for contact precautions, which involve wearing gloves and gowns and using disposable equipment.
Choice B reason: This is the correct answer because a fever with cough can be a sign of a respiratory infection that is transmitted by airborne droplets. A respiratory infection is caused by viruses, bacteria, or fungi that infect the lungs, throat, or nose and cause symptoms such as fever, cough, sore throat, or difficulty breathing. A respiratory infection can be contagious by inhaling the tiny droplets that are released when the infected person coughs, sneezes, or talks. The client with a respiratory infection should be placed in isolation for airborne precautions, which involve wearing a respirator mask and placing the client in a negative pressure room.
Choice C reason: This is not the correct answer because a rash is not transmitted by airborne droplets. A rash is a change in the color, texture, or appearance of the skin that can be caused by various factors, such as allergies, infections, medications, or injuries. A rash can be contagious by direct contact with the affected skin or by sharing personal items, such as clothing, bedding, or sports equipment. The client with a rash should be placed in isolation for contact precautions, which involve wearing gloves and gowns and using disposable equipment.
Choice D reason: This is not the correct answer because heart palpitations are not transmitted by airborne droplets. Heart palpitations are the sensation of having a fast, irregular, or pounding heartbeat that can be caused by various factors, such as stress, anxiety, caffeine, nicotine, or heart conditions. Heart palpitations are not contagious and do not require isolation. The client with heart palpitations should be evaluated for the underlying cause and treated accordingly.
Correct Answer is C
Explanation
Choice A reason: Pulmonary embolism is not the correct answer, because it is a condition that affects the lungs, not the arm. Pulmonary embolism is a blockage of one or more arteries in the lungs by a blood clot, which can cause shortness of breath, chest pain, and coughing up blood.
Choice B reason: Ischial tuberosity is not the correct answer, because it is a bony projection on the pelvis, not the arm. Ischial tuberosity is the part of the pelvis that supports the weight of the body when sitting, and it can be injured by trauma, overuse, or infection.
Choice C reason: Compartment syndrome is the correct answer, because it is a condition that affects the arm, and it matches the symptoms of the client. Compartment syndrome is a serious complication of a traumatic injury, such as a fracture, that causes increased pressure within a closed space of the body, such as the forearm. This pressure can compromise the blood flow and nerve function of the affected area, causing pain, numbness, weakness, and pale skin.
Choice D reason: Broken arm syndrome is not the correct answer, because it is not a real medical condition. Broken arm syndrome is a madeup term that does not describe any specific diagnosis or treatment.
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