Duplex ultrasound changes in the great saphenous vein after endosaphenous laser occlusion with 808-nm wavelength

Abstract

The healing process is based on vein thrombosis, fibrosis, and venous atrophy. Saphenofemoral interruption makes venous occlusion easier and prevents potential thrombotic complications and recurrence by recanalization. DUS monitoring makes possible to follow-up the thrombus involution and perform early retreatment. The 808-nm endosaphenous laser should be mainly applied to veins of <10 mm in diameter.

Saphenous Laser Ablation at 1470 nm Targets the Vein Wall, Not Blood

“…The same investigators then followed a separate group of 44 limbs treated with 12 to 15 watts, at an average of 30 to 40 J/cm, without tumescent anesthesia, and found 41% of veins either partially or completely recanalized. 18 Mordon et al 11 reported transmural injury in a mathematical model, using a water-specific 1320-nm laser which corroborates why our Dominican patients felt pain with the water-specific 1470-nm device (nociceptive nerve fibers reside in the aventitia). The fact that there were no heat-induced complications without a perivenous heat sink in the Dominican patients is consistent with published basic science literature.…”

Endovenous 808-nm Diode Laser Occlusion of Perforating Veins and Varicose Collaterals: A Prospective Study of 482 Limbs

“…The application of 30 to 40 J/cm of energy into the GSV and SSV leads to necrosis and coagulation of the intima and internal media, thrombosis, fibrosis, and venous hypotrophy. Atrophy was observed over a mean period of 12 months in the previous studies 16–18 . A similar mechanism of action was also confirmed for higher wavelengths of 980 and 1,320 nm 19,20 …”

Histological Observations One Year After Mechanochemical Endovenous Ablation of the Great Saphenous Vein

“…5 Histological analysis of endothermally-treated GSVs after 1 to 2 months showed large empty areas covered with endothelium in all 8 cases. However, some microvessels were located in the center of the neointima embedded in extensive fibrosis.…”