A 55-year-old woman has a 2-week history of a painful, red, and swollen right calf. Duplex ultrasound shows isolated calf (tibial vein) DVT with no proximal extension. She has no cancer and no prior VTE. According to current guidelines, what is the most appropriate management?
- A Serial imaging in 1-2 weeks with anticoagulation only if proximal extension occurs ✓
- B Therapeutic anticoagulation for 3 months
- C Immediate inferior vena cava (IVC) filter placement
- D Catheter-directed thrombolysis
Correct answer: A. Serial imaging in 1-2 weeks with anticoagulation only if proximal extension occurs
Explanation
For isolated distal (calf) DVT without high-risk features (active cancer, prior VTE, severe symptoms, PE), current ACCP/NICE guidelines recommend serial duplex ultrasound imaging over 2 weeks rather than immediate anticoagulation, initiating anticoagulation only if proximal extension is detected. This strategy avoids anticoagulation risk in the majority of isolated distal DVTs that resolve spontaneously. Anticoagulation is preferred when the patient is high risk or the diagnosis is certain with severe symptoms.
Reference: Bailey & Love's Short Practice of Surgery, 27th ed.
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Written and medically reviewed by the StethoPrep medical team.