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Chronic Venous Insufficiency (CVI)

What is chronic venous insufficiency?

Chronic venous insufficiency is one of the most common vein diseases. This condition occurs when the valves or venous wall in your leg veins don’t allow blood to flow back up to your heart. When the veins are no longer working properly, it causes the blood to flow backwards and pool in your leg veins. Chronic venous insufficiency can be painful and disabling.

What causes CVI?

You are more likely to have this condition if you:

  • Are overweight
  • Are pregnant
  • Have a family history of the problem.
  • Had damage to your leg due to injury, surgery, or previous blood clots.

Other causes of chronic venous insufficiency include:

  • High blood pressure in the leg veins over time, due to sitting or standing for long periods
  • Lack of exercise
  • Smoking
  • A blood clot in a deep vein, often in the calf or thigh (deep vein thrombosis)
  • Swelling and inflammation of a vein close to the skin, often in the legs (phlebitis)

What are the symptoms of CVI?

It is often associated with varicose veins, the severity of CVI, along with complexities of treatment options increases as the disease progresses. That is why it is important to see a vascular doctor if you have symptoms which may include:

  • Swollen feet due to edema.
  • Pain aggravated by standing
  • Leg cramps
  • Thickening of the skin around the ankles
  • Varicose veins
  • Itching and throbbing of legs

How is CVI treated?

CVI does not go away, and if left untreated may cause more serious complications that will impact your lifestyle. The pressure and swelling in your legs will increase until the tiniest blood vessels in the legs will burst. These can cause skin discoloration, sensitivity to broken skin if bumped or scratched, can lead to ulcers and open sores.

Treatments include:

ClosureFast™ procedure

ClosureFast is a minimally invasive thermal treatment that uses radiofrequency energy to heat and close the diseased vein, which redirects blood flow to healthy veins, relieving symptoms. Using an ultrasound, the doctor will position a catheter in the diseased vein through a small opening in the skin. The catheter delivers heat to the vein wall, causing it to shrink and seal the vein. Once the diseased vein is closed, blood will reroute itself to other healthy veins. The procedure uses local anesthesia, allows a quicker recovery compared to laser treatment and causes less pain than laser treatments.

ClosureFast has a long history of safely and effectively eliminating varicose veins in more than 2 million people.


VenaSeal is a minimally invasive nonthermal treatment. A specially formulated medical adhesive is injected to seal – or close – the diseased vein, rerouting blood to nearby healthy veins and providing symptom relief.  The vein walls stay sealed permanently and the blood vessel returns to its normal size, your varicose vein is diminished. 


Varithena is a minimally invasive varicose vein treatment which involves injecting a microfoam that causes veins to close. Blood flow is redirected to healthier nearby veins. The microfoam disperses as it comes into contact with blood in healthy veins. There’s no need for incisions and treatment is usually less than an hour. Most people only need a single treatment to see results.


A type of medication called a sclerosing agent is injected into your varicose veins that makes the vein walls collapse. Your body gradually eliminates the treated veins and reroutes blood through healthy veins, restoring normal blood flow and preventing venous insufficiency. If you have varicose veins or want to eliminate painful symptoms, call Premier Vascular to schedule a consultation or book an appointment online.