OBJECTIVES: The destruction induced during endovenous laser treatment (ELT) of the saphenous vein and the perivenous tissue in an animal model (goats) was analysed. Differences in vein wall destruction produced by two laser types, the 980 and 1500 nm diode lasers, were evaluated histologically. METHODS: In 14 goats, 28 lateral saphenous veins were treated with ELT. In 14 veins we used the 980 nm diode laser and in the remnant a 1500 nm laser. Postoperatively the veins were removed at different stages and sent for histological examination. RESULTS: Immediately removed veins after ELT show an uneven destruction of the vein wall. Veins harvested one week postoperatively show inflammatory tissue at their periphery. Two and three weeks postoperatively, organization is very extensive. In some cases, recanalization begins in a semi-lunar manner at the contralateral side of the laser hit. Veins treated with a 980 nm laser show deeper ulceration with more perivenous tissue destruction compared with veins treated with a 1500 nm diode laser. CONCLUSIONS: The ELT of veins produces an unevenly distributed damage. The cell necrosis is far more extensive than expected. Uneven vein wall destruction can lead to recanalization. Using a 1500 nm laser correlates with less penetrating ulcerations and more circumferential damage.
OBJECTIVES: The destruction induced during endovenous laser treatment (ELT) of the saphenous vein and the perivenous tissue in an animal model (goats) was analysed. Differences in vein wall destruction produced by two laser types, the 980 and 1500 nm diode lasers, were evaluated histologically. METHODS: In 14 goats, 28 lateral saphenous veins were treated with ELT. In 14 veins we used the 980 nm diode laser and in the remnant a 1500 nm laser. Postoperatively the veins were removed at different stages and sent for histological examination. RESULTS: Immediately removed veins after ELT show an uneven destruction of the vein wall. Veins harvested one week postoperatively show inflammatory tissue at their periphery. Two and three weeks postoperatively, organization is very extensive. In some cases, recanalization begins in a semi-lunar manner at the contralateral side of the laser hit. Veins treated with a 980 nm laser show deeper ulceration with more perivenous tissue destruction compared with veins treated with a 1500 nm diode laser. CONCLUSIONS: The ELT of veins produces an unevenly distributed damage. The cell necrosis is far more extensive than expected. Uneven vein wall destruction can lead to recanalization. Using a 1500 nm laser correlates with less penetrating ulcerations and more circumferential damage.
Authors: Alexander N Belyaev; Alexey N Chabushkin; Svetlana A Khrushchalina; Oksana A Kuznetsova; Andrey A Lyapin; Konstantin N Romanov; Polina A Ryabochkina Journal: Lasers Med Sci Date: 2016-02-12 Impact factor: 3.161
Authors: Michal Heger; Rowan F van Golen; Mans Broekgaarden; Renate R van den Bos; H A Martino Neumann; Thomas M van Gulik; Martin J C van Gemert Journal: Lasers Med Sci Date: 2014-03 Impact factor: 3.161
Authors: Moritz Späth; Martin Hohmann; Clemens Roider; Benjamin Lengenfelder; Florian Stelzle; Stefan Wirtz; Florian Klämpfl Journal: Sci Rep Date: 2020-10-15 Impact factor: 4.379