Varicose Vein Treatment

Many factors contribute to the development of telangiectatic facial veins and leg veins. Age, heredity, pathological conditions, occupations that require long periods of standing and pregnancy can all contribute to development venous disease. A successfull vascular treatment is dependent upon comprehensive history including presenting complaint, active symptoms, history of vascular disease, and general health and occupation history. Varicose vein treatment may require a combination of Laser based technology and sclerotherapy to adequately address the client's needs. Any successful vascular treatment is dependent on the treatment provider being able to successfully locate facial veins, legs veins and any reticular feeder veins that are often associated with the superficial telangiectasias.

There are several tools that can aid the visualization of the superficial venous system:

Syris V600 headlamp uses cross polarization technology allows the user
to see approximately 1mm below the skin's surface. 

The new Venoscope^® II transilluminator utilizes an array of high intensity LED lights to transilluminate the patient’s subcutaneous tissue thereby highlighting the veins which absorb the light rather that reflecting it.

Pulse duration is one of the most significant laser parameters to understand. Proper pulse duration is key to a safe, consistent and effective laser hair removal or vascular treatment. For this reason, it is typically the first parameter set by practitioners. Vein treatments include facial veins, leg veins and an occasional varicose vein treatment--although varicose veins are part of a larger medical condition not treated by a non-invasive aesthetic laser system.

Pulse duration determines the volume of tissue treated by the laser. Long pulse durations treat large volumes, short pulse durations treat small volumes. As an analogy, imagine a hot iron. A person can tap the surface of a hot iron that is several hundred degrees and not feel pain or get a blister. The reason is only the most superficial cells heated up during the time their finger contacted the iron. The heat did not have time to spread deeper into the finger. Conversely, it's extremely difficult to hold a hot cup of coffee even though it's far less hot than the iron. The difference is contact time. The cup is in contact for a long time so heat has time to conduct into the finger. Another analogy that compares to laser treatments is a pot full of hot soup. The soup stays hot in the pot for a long time, but if it's poured into 10 separate bowls, the bowls of soup cool down rapidly. This is because small objects give away heat to their surroundings more rapidly than large objects.

These same concepts are used when performing a laser vein treatment or laser hair removal treatment with an aesthetic laser system. The goal of every treatment is to heat the target you want to treat, but do as little collateral damage to surrounding tissue as possible. Large vessels (like leg veins) are like a pot of soup. They heat up slowly, and also don't give away their heat to their surroundings as well as small veins. This means long pulse durations will heat the vein, but still not heat surrounding tissue. In contrast, small veins, like facial veins, are very small and give away heat to their surrounding tissue quickly. This means energy must be applied in a short time--faster than they can give away their heat. If the pulse duration is too long, some of the energy (heat) ideally meant to treat the vein is lost into surrounding tissue heating the surrounding tissue, but not the vein. So, if the pulse duration is too long, more fluence (power) is required to achieve a clinical endpoint, but some power was wasted in surrounding tissue increasing the risk of complications. If the pulse duration is too long, it becomes impossible to treat the target regardless of the amount of fluence.

Using the correct pulse duration results in the most consistent outcomes with the lowest risk of complication. This allows the lowest amount of fluence to have the greatest impact on the target with the greatest degree of protection to the epidermis. In a nutshell, every treatment wants to use a pulse duration shorter than the time it takes for the target (hair or vein) to give away heat (thermal relaxation time) and longer than the time required for the epidermis to give away heat. Pulse durations longer than 5-10 ms provide epidermal safety by the same principal that prevents a long pulse duration from efficiently treating a small vein. The longer the pulse duration, the safer it is to the epidermis, but if it's too long, it will cease to be effective on the target.

So, in summary, how does someone select the correct pulse duration? Small targets require short pulse durations, large targets respond to long pulse durations. Longer pulse durations maximize epidermal safety. The following are approximate times to help select the correct pulse duration. If the duration is within about 5-10 ms of the ideal pulse duration, the treatment will achieve maximum efficacy and safety with minimum fluence. Remember, cooling is also a critical factor effecting epidermal protection and is also required for safe treatments.

Hair Treatment:

• Fine = 5-20 ms
• Medium = 15-30 ms
• Coarse = 25-50 ms
• Very coarse = 40-80 ms

Vein Treatment (size of vein is measured diameter):

• Typical pulse durations range from 10ms to 100ms for small high pressure telangiectasias to large low flow leg veins.