What is the appropriate action if a patient with a recent DVT is still symptomatic after three months?

In the case of a patient with a recent deep vein thrombosis (DVT) who is still symptomatic after three months, the most suitable action is disqualification. This is because persistent symptoms indicate that the patient may not have adequately recovered and could continue to experience complications or a risk of further thrombotic events.

Long-haul drivers and other commercial vehicle operators must meet specific medical standards to ensure their safety and that of others on the road. Continued symptoms of DVT can potentially lead to severe complications such as pulmonary embolism, which can drastically impair a driver's ability to operate a vehicle safely.

The other options, like certifying for two years, issuing a temporary certification, or re-evaluating for certification, may not adequately address the health risks posed by ongoing symptoms. Therefore, ensuring the individual's safety first through disqualification is the appropriate protective measure.