A 40-year-old obese female presents to the emergency department with unilateral leg swelling and pain. A D-dimer test is positive, but a Wells score for deep vein thrombosis (DVT) risk is 1 (low probability). What is the most appropriate next step in management?
✓ Correct Answer: Option B
In a patient with a low pretest probability for DVT but a positive D-dimer, a definitive imaging study like compression ultrasonography is required to rule out DVT, as D-dimer alone cannot exclude it.