What is it about?
Varicose veins are often treated with laser. This is called endovenous laser ablation (EVLA) and is one of the first-line recommended treatments for varicose veins. Over the years different lasers have been used. Initially, doctors used 810 nm, but this is not very good because it heats blood. When patients are lying down and have local anaesthetic around the vein, there is rarely blood in the vein. Hence the "industry standard" is the 1470 nm laser which heats water in the cells of the vein wall. Over the last year or so, a new laser using 1940 nm has been promoted heavily. This laser has a much greater affinity for water. This has led some companies to claim that less energy can be used to get the same effect. They have reported that this would lead to less pain. Unfortunately for those claims, this research shows that when using either of these lasers at the powers needed to close leg varicose veins, they have virtually identical effects on tissue. Therefore there is no advantage to either one. However, this research did show that when using very low powers, such as the new technique we have invented for treating prominent vertical forehead veins, the new 1940 nm wavelength does have an advantage over the standard 1470 nm.
Photo by LaserWorld LaserBeam on Unsplash
Why is it important?
It is very important that doctors are able to choose the best equipment to treat their patients. To do this, doctors rely on accurate information regarding different devices. Obviously, companies try to sell their equipment by outlining positive advantages to using their products over equipment being sold by competitor companies. This often means that marketing claims are made that either cannot be substantiated, or are difficult to substantiate. In order for doctors to be able to make the best decisions, they need the best independent scientific evidence that is available. At The Whiteley Clinic, we have a reputation for performing independent research and publishing results, regardless of whether it is useful for certain companies or not. We do this to ensure that we offer our patients the very best treatments available, based upon the best science available, and we share this information with other doctors through research papers. This sort of information is essential so that doctors can compare independent scientific findings with marketing messages from different companies so that they know who they can trust and what products are best for their patients.
Read the Original
This page is a summary of: No significant difference between 1940 and 1470 nm in endovenous laser ablation using an in vitro porcine liver model, Lasers in Medical Science, October 2021, Springer Science + Business Media, DOI: 10.1007/s10103-021-03449-0.
You can read the full text:
Endovenous Thermal Ablation of Prominent Central Forehead Veins (Supratrochlear Veins)
Peer-reviewed paper - first description of endovenous laser ablation of vertical forehead veins - optimally treated by 1940nm laser according to this new paper
Endovenous thermal ablation (EVTA) of Varicose Veins - Understanding the science
Project looking at the optimal endovenous treatment of varicose veins
Histological and Immunofluorescent Analysis of a Large Tributary of the Great Saphenous Vein Treated with a 1920 nm Endovenous Laser: Preliminary Findings
Peer-reviewed paper on the effect of 1920nm endovenous laser on human leg veins
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