Deep Vein Thrombosis (DVT) is a blood clot in a deep vein of the body. It usually occurs in the thigh or calf, causing pain, swelling, or tenderness in the leg. In some cases, there may be no symptoms.
Deep Vein Thrombosis can result from medical conditions, surgery, or accidents that cause the patient to be immobile for a long period of time, causing compression or damage to the veins, leading to a blood clot. If the blood clot breaks loose and blocks the lungs (Pulmonary Embolism), it can be life-threatening. DVT is a serious condition that should be treated urgently.
Symptoms of Deep Vein Thrombosis
More than half of patients may not show any symptoms, but common symptoms of Deep Vein Thrombosis patients include:
- Pain, cramps, or tenderness in one leg, usually starting in the calf. In rare cases, pain may occur in both legs.
- There is swelling in the legs, ankles or feet, which may also be accompanied by pain.
- The affected area of skin may feel hot or warmer than the surrounding skin.
- Skin changes such as paleness, redness, or purple color.
Some people may have upper extremity DVT (deep vein thrombosis) in their arms, which can cause neck pain, shoulder pain, darkening of the skin, swelling of the arms and hands. The pain may spread from the upper arm to the forearm , or weakness in the hand.
If you experience any symptoms of Deep Vein Thrombosis or other abnormal symptoms, you should see a doctor immediately as it may be a dangerous sign of complications.
Causes of Deep Vein Thrombosis
Deep Vein Thrombosis is caused by a blood clot in a deep vein, which prevents blood from flowing normally to the body. It usually occurs in the legs, pelvis, or arms. Blood clots can be caused by many factors, as follows:
- Damage to blood vessel walls from injury, such as a severe muscle injury or broken bone, causes blood vessels to narrow or become blocked.
- Physical inactivity, especially sitting or staying in the same position for a long time, can cause blood to pool in the legs. Blood circulation will slow down and blood clots will form, such as sitting in an airplane or traveling for a long time, including paralyzed patients and bedridden patients who cannot move.
- Vascular damage during surgery and postoperative recovery without physical movement
- Taking certain medications, such as birth control pills or hormone replacementtherapy, etc.
- Certain genetic disorders that make it easier for blood to clot, which may occur in conjunction with other factors that cause blood clots in the body.
- Pregnancy, which causes pressure on the veins in the legs and pelvis, especially in women who have inherited a genetic disorder. In some cases, symptoms may continue up to 3–6 weeks after delivery.
- The patient’s underlying diseases, such as cancer, lung disease, heart disease, diseases related to cystitis, etc.
In addition, other risk factors that may cause Deep Vein Thrombosis include being overweight or obese, smoking, having a family or personal history of the disease, and being over 60 years old.
Diagnosis of Deep Vein Thrombosis
A doctor will diagnose Deep Vein Thrombosis by asking about your symptoms, medical history, and performing a basic physical examination, examining areas that are painful, swollen, or red. In addition, your doctor may use other methods to diagnose, depending on your symptoms and the severity of the disease, as follows:
- Ultrasound is the most popular diagnostic method, using high-frequency sound waves to examine blood flow and areas of blocked veins.
- A blood test for D-Dimer is a value that indicates the presence of blood clots in blood vessels. If the D-Dimer value is high and there are risk factors for the disease, it may indicate that the patient has a blood clot.
- Injecting contrast dye into a vein (venography) in the foot or ankle and taking an X-ray to look for abnormalities in the veins.
- A CT scan or MRI can be done to check for blockages in blood vessels.
Deep Vein Thrombosis Treatment
Treatment of Deep Vein Thrombosis focuses on preventing the clot from growing larger or rupturing, which can lead to serious complications such as pulmonary embolism, and reducing the risk of recurrence later in life. Doctors may use the following treatments:
Self-care
After a patient is diagnosed with Deep Vein Thrombosis, the doctor will prescribe anticoagulants to relieve symptoms and reduce the risk of complications, along with self-care recommendations as follows:
- Move your body and change your posture frequently during the day. If you are a patient who is recovering from surgery, you should move your body to help your blood circulate better.
- Use a chair to prop up your legs, which will help improve blood circulation in your legs.
- Wear compression stockings to prevent swelling, prevent blood clots, and improve blood circulation. Choose a size that fits and is not too tight. Wear them at all times and use them as advised by your doctor.
- Take medication strictly as prescribed by your doctor and watch for signs of bleeding or other side effects that may occur after taking medication. In the case of taking anticoagulants, you should always inform your doctor if you have an accident or even a minor injury because complications from the disease and side effects from the medication can occur more easily.
- Visit your doctor regularly on the scheduled day and time to monitor your symptoms or adjust your treatment regimen. If you are taking Warfarin, your doctor may schedule a blood test to check your blood clotting levels.
Drug treatment
Anticoagulants are the most commonly used medications for treating deep vein thrombosis. They may be given orally or injected to help prevent blood clots.
Doctors may inject heparin intravenously or inject heparin derivatives (LMWHs) under the skin, such as enoxaparin, dalteparin, or fondaparinux. Doctors may also prescribe oral medications, such as warfarin, rivaroxaban, or apixaban. These medications should be taken continuously for at least 3–6 months, or as directed by your doctor, to ensure the effectiveness of the treatment and reduce the risk of side effects.
In cases where the blood clot is in a significant location or if a pulmonary embolism is suspected, doctors may give thrombolytics, administered intravenously or through a catheter inserted into the blood vessel, to help break up the clot directly. This is usually only used to treat patients with large blood clots or in severe cases, as it can cause dangerous side effects.
Placing filters
In cases where a patient cannot take anticoagulants, a doctor may place a thrombus filter in the large vein in the abdomen (vena cava) to prevent the blood clot from breaking out of the vein and blocking the pulmonary artery. Treatment with thrombus filter placement should be used for a short period of time until the risk of thrombosis is reduced or the patient can take medication.
Surgery
Doctors may recommend surgical removal of the blood clot if there is a large blood clot blocking the blood vessel or if the condition is severe, such as the blood clot destroying nearby tissue. In some cases, doctors may use a balloon or stent to temporarily expand the blood vessel during surgery. However, surgery can cause side effects, such as infection, damage to blood vessels, or bleeding after surgery.
Complications of Deep Vein Thrombosis
The most common complication of Deep Vein Thrombosis patients is pulmonary embolism , which occurs when a blood clot in the leg breaks off and blocks a pulmonary artery. This condition can occur immediately after a deep vein thrombosis or may occur later. Patients may experience the following symptoms:
- Dizziness
- Sweating a lot
- Shortness of breath or difficulty breathing, even at rest
- Abnormal heart rate
- Chest pain, especially when coughing, bending over, taking a deep breath, or eating. It may feel sharp, burning, or dull.
- Unexplained coughing or coughing up blood
Deep Vein Thrombosis can cause arrhythmias, heart failure, pulmonary hypertension, and can be life-threatening, so seek medical attention immediately.
In addition, some patients may develop other complications, such as post-thrombotic syndrome. Patients may experience pain, swelling, darkening of the skin, skin sores, and varicose veins , which are symptoms that have long-term effects.
Prevention of Deep Vein Thrombosis
Deep Vein Thrombosis can be prevented in the following ways:
- You should not cross your legs or sit in the same position for a long time. If you travel by car for a long distance, you should stop the car every hour to change your position. If you travel by plane, it may be inconvenient to get up and walk around, you should stretch your legs frequently to allow blood to circulate normally.
- Patients who are recovering from surgery should move their bodies to help them recover faster and improve blood circulation.
- Keep your weight and blood pressure levels in appropriate ranges by eating a healthy diet, exercising regularly, and avoiding smoking.
- Do not wear clothes that are too tight. Choose clothes that are comfortable and fit your body.
