A nurse is caring for a client who reports an area of redness, warmth, tenderness, and pain in the right calf. The nurse anticipates which of the following orders from the provider based on this finding?

Choice A reason: Homan’s sign is no longer considered a reliable or safe diagnostic tool for deep vein thrombosis (DVT) due to low sensitivity and the risk of dislodging a clot. Choice B reason: A venous duplex ultrasound is the gold standard non-invasive diagnostic test for DVT. It uses Doppler imaging to assess blood flow and detect thrombi. Choice C reason: Impedance plethysmography is less commonly used and less sensitive than duplex ultrasound for detecting DVT, especially in asymptomatic or distal cases. Choice D reason: Cold therapy is not appropriate for suspected DVT. It may cause vasoconstriction and worsen symptoms. Warm compresses may be used in some cases, but only after diagnosis and under provider direction.