8th February 2022

A 45-year-old female patient presents with 1-week history of bilateral calf pain

A 45-year-old female patient presents with 1-week history of bilateral calf pain. As a healthcare assistant, her work involves standing for prolonged periods of time and the pain is affecting her ability to work. On examination, it is found that she has dilated, tortuous veins in her lower legs.

Which of the following is an important investigation for this patient?

Select the SINGLE most appropriate option from the list below. Select ONE option only.