Effects of an Ultrasound‑Guided Femoral, Sciatic, and Genitofemoral Nerve Block with Ropivacaine on EC 5 0 and EC 9 5 for High Saphenous Vein Ligation.
Hui Wang, Jiangtao Chang, Yufei Li et al.
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From the abstract
To determine the effective concentrations (EC 5 0 and EC 9 5 ) of ropivacaine for an ultrasound-guided triple nerve block (femoral(FNB), suprapopliteal sciatic(SPSB), and genitofemoral nerve femoral branch(GFNfB)) in patients undergoing high saphenous vein ligation and stripping.
Reported results
Relative to baseline, hemodynamic parameters showed small but statistically significant decreases at 15 and 30 minutes after block (all P < 0.05), remaining within clinically acceptable limits. At skin incision, the VAS score in the Success group (n = 23) was significantly lower than in the Failure group (n = 13) [median (IQR), 1 (0, 2) vs 5 (4, 5); z = -5.000, P < 0.001], and the modified Bromage score was…
Authors' conclusions
This ultrasound-guided triple nerve block regimen is safe and effective for high saphenous vein ligation. The EC 5 0 and EC 9 5 of ropivacaine were 0.149% and 0.210%, respectively. An initial concentration of approximately 0.22% is suggested, with subsequent adjustment guided by individual response.