A nurse is caring for a client with suspected deep vein thrombosis (DVT). Which diagnostic test is used to assess blood flow and detect clots in the deep veins of the legs non-invasively?
D-dimer blood test.
Magnetic resonance imaging (MRI).
Contrast venography.
Venous Doppler ultrasound.
The Correct Answer is D
A) This choice is incorrect because the D-dimer blood test is a screening test for DVT but does not directly assess blood flow or detect clots non-invasively.
B) This choice is incorrect because magnetic resonance imaging (MRI) is a sensitive imaging modality, but it may not be readily available or suitable for all clients. It is not the primary choice for non-invasive assessment of blood flow and clots in suspected DVT.
C) This choice is incorrect because contrast venography is an invasive procedure involving the injection of contrast dye and X-ray imaging. It is not non-invasive, and venous Doppler ultrasound is a preferred first-line test.
D) This choice is correct. Venous Doppler ultrasound is a non-invasive imaging test used to assess blood flow in the veins and detect clots in the deep veins of the legs. It is readily available, safe, and does not involve the use of contrast dye or radiation.
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Related Questions
Correct Answer is B
Explanation
A) This choice is incorrect because arterial blood gas (ABG) analysis assesses oxygen and carbon dioxide levels in the blood, primarily used for respiratory and acid-base evaluations, not for confirming DVT.
B) This choice is correct. The D-dimer blood test is a screening test used to detect the presence of blood clot breakdown products in the blood. Elevated levels of D-dimer may suggest the presence of a blood clot, prompting further diagnostic testing for DVT.
C) This choice is incorrect because an electrocardiogram (ECG) primarily assesses the electrical activity of the heart and is not specific to confirming DVT. It may be useful to assess cardiac function in individuals with suspected pulmonary embolism.
D) This choice is incorrect because a chest X-ray is not used to confirm DVT. It is helpful in assessing the lungs and heart, particularly for detecting potential complications of DVT like a pulmonary embolism, but it does not directly diagnose DVT.
Correct Answer is C
Explanation
A) This choice is incorrect because swelling and redness in the affected leg are common clinical manifestations of DVT but are not specific to detecting potential complications like a pulmonary embolism. The nurse should focus on respiratory and cardiovascular assessments for this purpose.
B) This choice is incorrect because elevated body temperature and chills may indicate an infection but are not specific to detecting potential complications of DVT, such as a pulmonary embolism.
C) This choice is correct. Pleuritic chest pain (sharp chest pain worsened by deep breathing or coughing) and hemoptysis (coughing up blood) are classic clinical manifestations of a pulmonary embolism, a potentially life-threatening complication of DVT.
D) This choice is incorrect because abdominal pain and distension are not typical signs of a pulmonary embolism. Abdominal pain may be related to other causes, such as gastrointestinal issues.
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