Here's what to know about chronic venous insufficiency
Chronic venous insufficiency, or CVI, happens when veins in the legs can't properly carry blood back to the heart. That can lead to blood pooling in the lower legs. In addition to swelling, usually around the feet and ankles, symptoms can include legs that are achy, heavy feeling or tingly, and varicose veins. Severe cases could trigger leg sores known as ulcers.
Overcoming gravity to pump blood from the feet all the way up to the heart is a challenge, especially when someone is standing or sitting for long periods. So legs veins are lined with one-way valves that keep blood from sliding backward on that journey. Anything that damages those valves can lead to chronic venous insufficiency. Risk factors can include blood clots, vein inflammation known as phlebitis or being overweight.
Doctors must rule out serious causes of leg swelling, such as heart problems, kidney disease or blood clots. Ultrasound exams of the leg veins can help confirm chronic venous insufficiency. According to the Cleveland Clinic, treatment can include wearing compression stockings, elevating the legs and achieving a healthy weight. Also exercise, especially walking, is recommended — because strong leg muscles can squeeze veins in a way that helps them pump blood. Medications and medical procedures are available for more advanced cases.
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