Assessing Endovenous Heat-Induced Thrombosis in Flush Endovenous Laser Ablation: A Study on Incidence, Risk Factors, and Patient Outcomes.

Our findings indicate that patient- and limb-level covariates—age, BMI (both continuous and ≥30), laterality, operative time, CEAP class, and junctional or truncal diameter—did not differ across EHIT categories (all p > 0.05), while the only independent association with EHIT III–IV had greater intra-procedural power at the junction, expressed as a higher generator power setting (watts) at the SFJ in combination, with slower operator-modulated pull-back (power term p < 0.05); notably, within EHIT III, we observed two out of ten cases with BMI ≥ 30, but BMI did not reach statistical significance, and none of the eleven EHIT III–IV patients carried chart-documented specific VTE risk factors, suggesting that perijunctional dosing (power and dwell) rather than baseline thrombophilia was the relevant driver in our series.

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