A client who has developed acute compartment syndrome from a compound fracture of the arm asks the nurse to define what this means. Based on an understanding of the condition, the nurse should explain that:
Bleeding and swelling cause increased pressure under the fascia.
Displaced bones compress nerves and vessels.
Blood supply to the bone is interrupted.
Compression of the muscle tissue restricts blood flow to the area.
The Correct Answer is A
Choice A Reason
Acute compartment syndrome occurs when bleeding or swelling within an enclosed bundle of muscles – known as a muscle compartment – leads to increased pressure. This pressure can impede blood flow to the body tissue and destroy function. The fascia, which is a tough layer of fibrous tissue, does not stretch easily, so any swelling or bleeding can quickly lead to increased pressure.
Choice B Reason
While displaced bones can compress nerves and vessels, this is not the primary mechanism of acute compartment syndrome. Displaced bones are more likely to cause direct injury or impingement, but compartment syndrome specifically refers to the pressure build-up within a muscle compartment that affects circulation and tissue viability.
Choice C Reason
Interruption of blood supply to the bone is a serious concern and can lead to conditions such as avascular necrosis. However, in the context of acute compartment syndrome, the primary issue is the pressure within the muscle compartment rather than direct disruption of blood supply to the bone.
Choice D Reason
Compression of muscle tissue can restrict blood flow to the area, which is a part of the pathophysiology of compartment syndrome. However, the compression is a result of increased pressure within the compartment, not the primary cause. The increased pressure is due to bleeding and swelling, which is why choice A is the most accurate description.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason
Providing a quiet atmosphere for undisturbed sleep is beneficial for all patients, especially those recovering from illness. However, it does not directly address the issue of activity intolerance. Adequate rest is important, but the primary concern with activity intolerance is managing energy levels during waking hours to improve the patient's ability to engage in activities.
Choice B Reason
Clustering activities in the morning may seem like a good strategy when the patient is well-rested. However, this could lead to rapid depletion of energy reserves and exacerbate activity intolerance. It is more effective to spread activities throughout the day to manage energy levels better.
Choice C Reason
Identifying ways to conserve energy is a key intervention for managing activity intolerance. This can include teaching the patient energy-conservation techniques, such as sitting while showering or dressing, taking frequent breaks, and prioritizing tasks. This approach helps patients with folic acid deficiency anemia to participate in activities without excessive fatigue.
Choice D Reason
While nutrition is important in the management of anemia, recommending small frequent iron-rich meals does not directly address activity intolerance. Folic acid deficiency anemia requires dietary intake of folate-rich foods or supplements. Iron is important, but the focus for folic acid deficiency should be on folate.
Correct Answer is D
Explanation
Choice a reason:
An increase in urine output can be a sign of improved kidney function or the effect of medications, but it is not a direct indicator of reduced cardiac workload. Atenolol, a beta-blocker, primarily reduces the heart rate and myocardial oxygen demand, not urine output.
Choice b reason:
Less dyspnea with activity suggests improved cardiovascular efficiency, but it is not a specific measure of cardiac workload. Dyspnea can be influenced by respiratory conditions and is not solely determined by cardiac function.
Choice c reason:
A blood pressure of 120/80 mmHg is considered optimal for most adults and indicates good control of hypertension. However, it does not specifically reflect the cardiac workload, which is more directly affected by heart rate and myocardial oxygen demand.
Choice d reason:
A heart rate of 65 per minute is a clear indicator that atenolol is effective in reducing cardiac workload. Atenolol decreases the heart rate, which in turn reduces myocardial oxygen demand and the overall workload on the heart. This is particularly important for patients with unstable angina, where reducing the heart's workload can prevent angina attacks and potential myocardial infarction.
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