2. This case was found the thrombosis in distal legs, she should get heparin for 5-10 days and then get the warfarin for at least 6 weeks but if she still has the risk factors of DVT the duration of warfarin treatment should be extended to at least 6 months. (ref: Thai guideline for treatment with oral anticoagulant (warfarin)).
3. Actually, she can fly to South Korea after treatment at least 4 weeks, and the flight time is around 5-6 hours, therefore she should 1)sitting in an exit row or bulkhead seat to increase legroom 2)wearing compression stockings 3)strictly taking the anticoagulant 4)exercises for her feet and legs while flying.