Venous Leg Ulcers

Understanding Venous Circulation

While arterial circulation carries blood from the heart out to the tissues and organs, venous circulation brings blood from the tissues back to the heart. To understand this, imagine a roller coaster.

Arterial circulation is like that effortless part of the ride where the coaster is racing downhill—blood is propelled by the pumping action of the heart, flowing quickly through arteries to deliver oxygen and nutrients to tissues.

Venous circulation, on the other hand, is like the steady uphill climb that takes the roller coaster up the hill before its descent. It's a slow, coordinated process like the ratcheting 'click, click, click' of gears pulling the coaster slowly up its incline. Like the coaster, the climb of blood through the venous system back to the heart is effortful and slow.

When Vein Valves Fail

In the case of venous disease, however, the valves become damaged, and the valves that were only supposed to open one way now can swing freely back and forth. Instead of venous blood moving in only one direction toward the heart, some blood sloshes backward (refluxes) through the broken valve, causing a backup of blood in the veins.

The reflux causes blood to pool within the veins, creating a column of increasing pressure within them. As the old saying goes, 'pressure bursts pipes,' and all that pressure from pooling blood in the veins can cause them to stretch, crack, and even leak.

The Cascade of Fluid and Inflammation

Edema, or tissue swelling, occurs when the increased pressure in the veins causes the veins to leak fluid, like damaged pipes. When the veins leak, the extra fluid collects within the subcutaneous tissues of the legs. The fluid buildup then stretches the skin, which can lead to irritation and inflammation of the skin, known as stasis dermatitis.

Because the skin is inflamed, broken, and/or damaged, it also becomes more susceptible to infections, cellulitis, and further skin damage. As edema builds, so too does the stretching and injury to the skin, which leads to progressive skin breakdown, skin openings, weeping of edema fluid, and ultimately, open venous ulcers.

Tissue Maceration: The Moisture Problem

Think back to the last time you hopped out of the bathtub or a swimming pool after a long soak. Remember how your hands looked, all pruned and waterlogged? You might have even rubbed your hands and fingers together, only to see some of that top skin layer peel right off. Kind of gross, but it perfectly illustrates the extent to which excess moisture can affect skin and soft tissues.

In wound care, we call it 'tissue maceration.' Maceration is like that pruning effect on your hands and fingers, but on steroids. It's the softening and breaking down of skin due to prolonged exposure to moisture. Imagine if your skin remained in that pruned, waterlogged state for days or weeks on end. The skin would become fragile, easily damaged, and prone to breakdown—exactly what happens in venous disease.

The Role of Compression Therapy

Compression therapy is the cornerstone of venous ulcer treatment. By applying graduated pressure to the leg, compression stockings or wraps help push pooled blood back up toward the heart, counteracting the effects of damaged vein valves.

Think of compression as providing external support to veins that can no longer support themselves. The gentle, graduated pressure—strongest at the ankle and gradually decreasing up the leg—helps restore the one-way flow of blood back to the heart.

Elevation and Mobility

Elevating your legs above the level of your heart is one of the simplest yet most effective strategies for managing venous insufficiency. Gravity becomes your ally, helping drain pooled fluid and blood back toward the heart.

Aim to elevate your legs for 30 minutes, 3-4 times daily. When lying down, prop your feet on pillows to achieve elevation above heart level. Simply resting your feet on a footstool while sitting is not enough—true therapeutic elevation requires legs higher than your heart.

Preventing Recurrence

Venous ulcers have a high recurrence rate—up to 70% of patients experience another ulcer within five years. However, this statistic reflects patients who don't maintain preventive strategies. With diligent adherence to prevention, recurrence can be dramatically reduced.

Frequently Asked Questions