The nurse is caring for a client who develops compartment syndrome from a severely fractured arm. The client asks the nurse why this can happen. What is the best response by the nurse?
A bone fragment has injured the nerve supply in the area.
An injured artery causes impaired arterial perfusion through the compartment.
Bleeding and swelling cause increased pressure in an area that cannot expand.
The fascia expands with injury, causing pressure on underlying nerves and muscles.
The Correct Answer is C
Choice A reason: A bone fragment has injured the nerve supply in the area is not the best response by the nurse. This may be a possible complication of a fracture, but it does not explain the mechanism of compartment syndrome. Compartment syndrome is a condition where the pressure within a closed space (such as a muscle compartment) exceeds the perfusion pressure and causes ischemia and necrosis of the tissues. A bone fragment may damage the nerve, but it does not cause increased pressure in the compartment.
Choice B reason: An injured artery causes impaired arterial perfusion through the compartment is not the best response by the nurse. This may be a possible cause of compartment syndrome, but it is not the most common one. Compartment syndrome is more often caused by venous obstruction than arterial obstruction. An injured artery may reduce the blood flow to the compartment, but it does not cause increased pressure in the compartment.
Choice C reason: Bleeding and swelling cause increased pressure in an area that cannot expand is the best response by the nurse. This is the most common cause of compartment syndrome and explains the pathophysiology of the condition. Bleeding and swelling are the result of inflammation and tissue injury that occur after a fracture. They increase the volume of fluid in the compartment, which cannot expand due to the rigid fascia that surrounds it. This leads to increased pressure in the compartment, which compresses the blood vessels, nerves, and muscles and causes ischemia and necrosis of the tissues.
Choice D reason: The fascia expands with injury, causing pressure on underlying nerves and muscles is not the best response by the nurse. This is not a correct statement, as the fascia does not expand with injury. The fascia is a tough connective tissue that encloses the muscle compartments and limits their expansion. The fascia is part of the problem, not the cause, of compartment syndrome. The fascia prevents the compartment from accommodating the increased volume of fluid and causes increased pressure in the compartment.
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Correct Answer is C
Explanation
Choice A reason: This is not the best action because encouraging range of motion can worsen the symptoms and cause more damage to the nerves and blood vessels. Range of motion is the movement of the joints and muscles through their normal extent. Range of motion can help to prevent stiffness, contractures, and muscle atrophy, but it can also increase the swelling and pressure in the affected area, which can impair the circulation and sensation.
Choice B reason: This is not the best action because applying heat to the affected hand can worsen the symptoms and cause more damage to the tissues. Heat is the transfer of thermal energy from a warmer object to a cooler one. Heat can help to relax the muscles, reduce the pain, and increase the blood flow, but it can also increase the inflammation and edema in the affected area, which can compromise the oxygen and nutrient delivery to the tissues.
Choice C reason: This is the best action because removing the cast can decrease the pressure and restore the circulation and sensation to the affected area. A cast is a rigid device that immobilizes and protects a fractured or injured body part. A cast can help to align the bones, prevent displacement, and promote healing, but it can also cause complications, 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. The nurse should remove the cast immediately and notify the physician if the client shows signs of compartment syndrome, such as numbness, tingling, pallor, coolness, or swelling.
Choice D reason: This is not the best action because raising the arm above the level of the heart can worsen the symptoms and cause more damage to the nerves and blood vessels. Raising the arm above the level of the heart can help to reduce the swelling and pain in the affected area, but it can also reduce the blood flow and oxygenation to the area, which can lead to ischemia, necrosis, or gangrene. The nurse should elevate the arm at or below the level of the heart and monitor the pulse, color, temperature, and sensation of the fingers.
Correct Answer is C
Explanation
Choice A reason: Capillary refill is not the nurse's priority assessment for this client, because it is not the most relevant and sensitive indicator of the client's condition. Capillary refill is a test that measures the time it takes for the color to return to the nail bed after applying pressure, which reflects the peripheral circulation and tissue perfusion. Capillary refill can be affected by factors such as temperature, hydration, or vasoconstriction. Capillary refill is not a specific or reliable sign of PCP, which is a type of pneumonia caused by a fungus that affects the lungs and respiratory system.
Choice B reason: Radial pulses are not the nurse's priority assessment for this client, because they are not the most relevant and sensitive indicator of the client's condition. Radial pulses are the beats that can be felt at the wrist, which reflect the heart rate and rhythm. Radial pulses can be affected by factors such as activity, emotion, or medication. Radial pulses are not a specific or reliable sign of PCP, which is a type of pneumonia caused by a fungus that affects the lungs and respiratory system.
Choice C reason: Lung sounds are the nurse's priority assessment for this client, because they are the most relevant and sensitive indicator of the client's condition. Lung sounds are the noises that can be heard with a stethoscope over the chest, which reflect the air movement and ventilation in the lungs and airways. Lung sounds can reveal the presence of abnormalities, such as crackles, wheezes, or diminished breath sounds, which indicate fluid, inflammation, or obstruction in the lungs or airways. Lung sounds are a specific and reliable sign of PCP, which is a type of pneumonia caused by a fungus that affects the lungs and respiratory system.
Choice D reason: Skin turgor is not the nurse's priority assessment for this client, because it is not the most relevant and sensitive indicator of the client's condition. Skin turgor is a test that measures the elasticity of the skin, which reflects the hydration and fluid status of the body. Skin turgor can be affected by factors such as age, weight loss, or edema. Skin turgor is not a specific or reliable sign of PCP, which is a type of pneumonia caused by a fungus that affects the lungs and respiratory system.
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