Match each clinical scenario involving suspected venous thromboembolism to the most appropriate next step in the diagnostic test sequence based on current clinical guidelines.
- A patient with a high pre-test probability for pulmonary embolism, a normal serum creatinine level, and no known drug allergies.Computed tomography pulmonary angiography (CTPA)
- A patient with a low pre-test probability for pulmonary embolism presenting with acute pleuritic chest pain and a normal baseline chest radiograph.High-sensitivity plasma D-dimer assay
- A pregnant patient in her second trimester with acute dyspnea, pleuritic chest pain, and a newly swollen, tender left calf.Compression ultrasonography of the lower extremities
- A patient with a high pre-test probability for pulmonary embolism who has stage 4 chronic kidney disease and a documented history of anaphylaxis to iodinated contrast media.Ventilation-perfusion (V/Q) scan
Answer
High pre-test probability matches with CTPA. Low pre-test probability matches with D-dimer assay. Pregnant patient with a swollen calf matches with lower extremity ultrasonography. High pre-test probability with severe chronic kidney disease and contrast allergy matches with V/Q scan.
The correct matches reflect standard evidence-based algorithms for the diagnostic workup of suspected venous thromboembolism, optimizing diagnostic yield while minimizing patient harm from radiation and contrast.
Step-by-Step Solution
Key Concept
Appropriate test sequencing for suspected pulmonary embolism depends heavily on clinical pre-test probability, pregnancy status, concurrent symptoms of deep vein thrombosis, and contraindications to contrast media.
Estimated Time:1m 30s