Understanding Blood Clots in the Legs
Blood clots in the legs, also called deep vein thrombosis (DVT), are a serious health condition. They occur when blood thickens and clumps together, forming a clot that blocks proper flow. If left untreated, fragments can break loose and travel to the lungs, heart or brain leading to life-threatening complications.
What Causes Blood Clots in Legs?
There are several risk factors that contribute to clot formation:
- Inactivity - Staying immobile for long periods of as during travel, after surgery or with sedentary lifestyle
- Pregnancy - Increased blood clot risk due to hormone changes
- Birth Control Pills - Estrogen effects on blood coagulation
- Obesity - Excess weight pressing on veins
- Smoking - Chemical damage to blood vessels
- Family History - Genetic tendencies for sticky platelets
- Older Age - Progressive loss of vessel elasticity
- Leg Injury - Vessel wall damage triggers clotting cascade
7 Early Signs of a Blood Clot in Leg
Being alert to the following signs and getting prompt medical care can halt clot progression and prevent future ones from forming:
1. Pain and Tenderness
An aching or cramping sensation in the legs that intensifies when standing or walking is a red flag for clot presence. Pain often starts in the calf and can radiate up behind the knee or into the thigh.
2. Redness and Warmth
The area around a leg clot typically looks reddened and feels warm relative to surrounding skin owing to increased blood flow from vessel inflammation and irritation.
3. Swelling
A blood clot in the leg can obstruct drainage of fluid from tissues resulting in swelling or edema. This is most noticeable in the ankle and calf regions.
4. Skin Discoloration
In more advanced cases, the skin overlying a blood clot takes on a purplish or blueish hue. This skin staining indicates deoxygenated blood pooling below.
5. Visible Veins
Skin near the clot site can take on a reddish spider-webbed appearance as surrounding vessels enlarge to compensate for block circulation.
6. Leg Fatigue
A usually painless but abnormal tiredness or heaviness develops in the affected leg. This tends to worsen over the course of the day.
7. Leg Weakness
The calf or thigh muscles may start feeling weak making walking more difficult. This suggests an interruption of blood nutrients getting to muscles.
Diagnosing Blood Clots in Legs
See your doctor promptly if you experience any signs of a possible blood clot. Your physician will start with a physical exam to check for redness, swelling or discoloration in the legs. They may also check for a difference in calf circumference if one leg appears more swollen.
Common diagnostic blood clot tests include:
- Duplex Ultrasound - Uses soundwaves to visualize clots
- Venogram - Maps out leg veins using contrast dye injection
- CT Scan - Cross-sectional 3D images identify clots
- MRI - Magnetic imaging clarifies location and size of clots
Once your doctor confirms you have a DVT, treatment focuses on breaking up the existing clot while preventing new ones from forming.
Medical Treatment Options for Blood Clots
Anticoagulant medications make up the cornerstone of blood clot treatment. They work by thinning the blood, curbing its ability to clot and allowing the body to slowly break up and dissolve the clot.
Intravenous anticoagulants include:
- Heparin - Rapid action for hospitalized patients
- Enoxaparin - Twice daily injection version of heparin
Oral anticoagulant options prescribed post-hospitalization include:
- Warfarin - Most commonly used oral thinner post-clot
- Eliquis, Xarelto, Pradaxa - Newer generation options
Compression stockings applying gentle pressure may also improve lower leg circulation and reduce residual swelling.
Outlook and Preventing Future Blood Clots
Prognosis is generally good for treated DVTs with most symptoms resolving within 1-2 weeks in quick caught cases. Vigilance is key however as damage endured by veins becomes permanent over time.
Preventative measures like staying active, frequently moving legs on long haul flights, managing healthy body weight and discontinuing tobacco use all help lower future DVT recurrence.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.
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