A nurse is explaining the diagnostic tests for deep vein thrombosis (DVT) to a client. Which test is considered the gold standard for diagnosing DVT?
Venous Doppler ultrasound.
D-dimer blood test.
Magnetic resonance imaging (MRI).
Contrast venography.
The Correct Answer is D
A) This choice is incorrect because venous Doppler ultrasound is a non-invasive imaging test commonly used to diagnose DVT. However, it is not considered the gold standard due to potential limitations in visualizing small clots and deep veins.
B) This choice is incorrect because the D-dimer blood test is a screening test used to detect the presence of blood clot breakdown products. While it can help rule out DVT when negative, it is not the definitive diagnostic test.
C) This choice is incorrect because magnetic resonance imaging (MRI) is a sensitive imaging modality but is not considered the gold standard for diagnosing DVT. MRI may be used in specific cases, but contrast venography remains the gold standard.
D) This choice is correct. Contrast venography involves injecting contrast dye into the veins and taking X-ray images to visualize the blood flow and detect any clots. It is considered the gold standard for diagnosing DVT, as it provides direct visualization of the clot and the extent of its involvement.
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Related Questions
Correct Answer is A
Explanation
A) This choice is correct. The D-dimer blood test is a rapid and sensitive screening test that can help rule out DVT in low-risk individuals. A negative D-dimer result can be useful in excluding DVT, avoiding unnecessary imaging or invasive tests.
B) This choice is incorrect because contrast venography is not a rapid test and involves invasive procedures. It is not used as a first-line screening test due to its complexity and potential risks.
C) This choice is incorrect because magnetic resonance imaging (MRI) may provide valuable information, but it is not the first choice for rapid rule-out of DVT. MRI may be employed in specific cases when initial screening tests are inconclusive.
D) This choice is incorrect because the Wells score assessment is not a diagnostic test but a scoring system to estimate the likelihood of DVT. It does not provide rapid results to rule out DVT directly.
Correct Answer is D
Explanation
A) This choice is incorrect because regular physical activity is an essential preventive measure for DVT. Encouraging the client to engage in physical activity is vital for maintaining good circulation and reducing the risk of clot formation.
B) This choice is incorrect because a diet high in saturated fats and cholesterol is not a recommended preventive measure for DVT. A healthy, balanced diet is important for overall health, but it does not specifically prevent DVT.
C) This choice is incorrect because elevating the legs above heart level while resting is beneficial for reducing edema and improving blood flow but is not the primary preventive measure for DVT.
D) This choice is correct. The client should continue taking prescribed anticoagulant medication as directed by their healthcare provider. Anticoagulant therapy is often prescribed for a specific duration to prevent clot formation and reduce the risk of complications in clients with DVT.
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