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 A
Explanation
Choice a reason:
A history of allergy to iodine is a critical finding to report before a coronary angiography because the contrast dye used in the procedure typically contains iodine. Patients with an iodine allergy may experience severe reactions, including anaphylaxis, which can be life-threatening. Precautions such as premedication with steroids and antihistamines or the use of alternative contrast agents may be necessary.
Choice b reason:
A serum potassium level of 4.0 mEq/L is within the normal range, which is approximately 3.5 to 5.2 mEq/L for adults. Therefore, this finding is not significant and does not need to be reported to the healthcare provider prior to the procedure.
Choice c reason:
A blood pressure reading of 138/90 mmHg is slightly elevated but does not reach the threshold for stage 1 hypertension, which starts at 140/90 mmHg for individuals under 60 years of age. While it should be monitored, it is not an urgent concern that needs to be reported immediately before a coronary angiography unless the patient shows symptoms of hypertensive crisis.
Choice d reason:
An EKG showing atrial fibrillation is an important finding; however, it is not typically a contraindication for coronary angiography unless the patient is hemodynamically unstable or symptomatic. Atrial fibrillation can increase the risk of stroke, but anticoagulation management is usually the focus rather than postponing necessary diagnostic procedures.
Correct Answer is C
Explanation
Choice A Reason
Metoprolol, a beta-blocker, can cause fluid retention, which may lead to swelling in the ankles. However, this is not a common side effect and is not typically included as a standard warning for patients starting on metoprolol. Patients should be aware of this potential side effect but also understand that it may not occur.
Choice B Reason
Patients should not stop taking metoprolol abruptly, especially if they experience fatigue, which can be a common side effect. Abrupt cessation can lead to rebound hypertension or angina. Instead, patients should consult their healthcare provider if they experience significant fatigue that impacts their daily activities.
Choice C Reason
Checking the pulse is an important self-monitoring measure for patients on metoprolol. This medication can slow the heart rate, and patients should be instructed on how to check their pulse and what to do if it falls below a certain rate, as advised by their healthcare provider.
Choice D Reason
While staying hydrated is generally good advice, there is no specific need to drink plenty of fluids related to the use of metoprolol for angina pectoris. Patients should follow normal hydration guidelines unless otherwise directed by their healthcare provider.
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