What diagnostic measure follows a suspected case of DVT?

In cases of suspected deep vein thrombosis (DVT), the most appropriate diagnostic measure is an ultrasound of the affected limb. This imaging technique is the gold standard for diagnosing DVT because it is non-invasive, readily available, and highly effective in visualizing blood clots within the veins. The ultrasound uses high-frequency sound waves to create images of the blood vessels, allowing healthcare providers to identify the presence of clots, assess blood flow, and determine the severity of the condition.

Other diagnostic options are less relevant in the direct evaluation of DVT. An electrocardiogram (ECG) is primarily used to assess heart conditions and rhythm abnormalities rather than to diagnose venous conditions like DVT. A chest X-ray is useful for evaluating lung conditions and can be important in ruling out complications like pulmonary embolism but does not diagnose DVT itself. Blood culture and sensitivity tests are typically used to identify infections and would not be indicated in the context of a suspected DVT, as they do not provide any relevant information about blood clots in the veins. Thus, the use of ultrasound stands out as the most specific and appropriate diagnostic tool for a suspected case of DVT.