25 Questions and Answers
DVT is a blood clot that forms in the deep veins, usually in the legs. The clot can obstruct blood flow and may break loose and travel to the lungs — a condition called pulmonary embolism. DVT is a serious, potentially life-threatening condition. It can develop due to prolonged immobility, surgery, oral contraceptives, cancer, or genetic clotting disorders.
The most typical symptoms are sudden swelling in one leg, pain, warmth, skin discolouration, and tenderness. However, some cases have no symptoms at all. This is why people at risk — such as those on prolonged bed rest — need to be vigilant.
Three core factors known as Virchow's Triad are involved: slowed blood flow (immobility), damage to the vessel wall (trauma, surgery), and an increased tendency for blood to clot (genetic factors, medications, pregnancy).
DVT is more common in people who are immobile for long periods, those who have had major surgery, overweight individuals, smokers, pregnant women, and women using oral contraceptives. People over 60 and cancer patients are also at higher risk.
Yes. If the clot breaks off and reaches the lungs, pulmonary embolism can develop. This presents with sudden shortness of breath, chest pain, rapid pulse, and fainting. Without prompt treatment, there is a risk of death.
A physical examination and D-dimer blood test are performed first. If DVT is suspected, the veins are imaged with Doppler ultrasonography. CT or MR venography may be used if needed. Early diagnosis prevents the clot from growing and reduces the risk of embolism.
The main treatment is anticoagulant (blood-thinning) medication. The goal is to prevent the clot from growing and stop new clots from forming. For large clots, thrombolytic drugs or catheter-directed mechanical removal may be used.
Usually 3–6 months. If a genetic clotting disorder or ongoing risk factors are present, the treatment period is extended or lifelong medication may be required.
No. Even if it partially shrinks, it can leave residual damage in the vein and cause future clots. Without treatment, serious complications can develop.
They prevent blood from pooling in the legs, reduce swelling, and lower the risk of post-thrombotic syndrome. The appropriate pressure level (20–30 mmHg) should be determined by a doctor.
In some patients after DVT, the venous valves become damaged and blood pools in the leg. This leads to persistent swelling, pain, skin discolouration, and ulcers. Without preventive measures, it can become permanent even after treatment.
Not during the acute phase. After treatment is complete and clot risk has reduced, flying is possible with a doctor's approval. Compression stockings and staying well hydrated are essential on long flights.
Yes, at a rate of 20–30% especially if risk factors persist. Lifestyle precautions should be maintained even after medication is stopped.
Pregnancy hormones relax vessel walls and increase blood clotting tendency, while the growing uterus compresses the veins. The risk continues for up to 6 weeks after delivery.
Sudden shortness of breath, chest pain, coughing up blood, or a sudden increase in leg pain and swelling are signs requiring immediate emergency attention.
Yes, under medical supervision. Light walking improves circulation and helps prevent the clot from progressing. Bed rest is only recommended in the early stages.
Yes. Drinking plenty of water prevents the blood from thickening. A diet rich in vegetables and fruit with low salt and fat is recommended. Prolonged fasting, excess caffeine, and alcohol can increase clot risk.
Genetic clotting tendencies can be identified through tests such as Factor V Leiden and Prothrombin G20210A. These tests are recommended for people with a family history of DVT or embolism at a young age.
No. Stopping blood thinners early can lead to new clot formation. Treatment must always be discontinued under medical supervision.
Usually for 6–12 months. If symptoms persist in the long term, a doctor may recommend permanent use.
Yes. If venous valves are damaged, leg swelling, skin hardening, and discolouration can become permanent. This may progress to chronic venous insufficiency.
No. Varicose veins are a valve disorder in superficial veins, while DVT is a clot in the deep veins. However, varicose veins can predispose to DVT.
Avoid prolonged immobility, drink plenty of fluids, do leg exercises on long journeys, and use compression stockings when necessary.
Indirectly, yes. Both involve vascular blockage, but DVT occurs in the venous system and heart attack in the arterial system. Risk factors are similar.
In high-risk individuals, yes — to a large extent. Early mobilisation after surgery, adequate hydration, compression stockings, and doctor-prescribed anticoagulants can significantly reduce the risk.
