Can internal cooling radiofrequency catheters with local hypothermia eliminate the need for tumescent anesthesia? A single-center,retrospective,observational study
Restricted accessResearch articleFirst published online April, 2025
Can internal cooling radiofrequency catheters with local hypothermia eliminate the need for tumescent anesthesia? A single-center,retrospective,observational study
Background: Tumescent anesthesia not only prolongs the operation time but also induces postoperative pain, bruising, and swelling. This study investigated the effectiveness and safety of tumescentless RFA using an internal cooling system with a VENISTAR catheter and local hypothermia. Methods: We retrospectively analyzed patients who had undergone RFA for above-knee (AK) great saphenous vein (GSV) between March 2023 and November 2023. We compared the efficacy and safety of tumescentless RFA between group T (conventional tumescent group, n = 50) and group N (non-tumescent group, n = 59). Results: The operative time was shorter in group N than in group T (group N: 31.37 min, group T: 42.31 min, p < .01), with no severe adverse events occurred in either group, such as endovenous heat-induced thrombosis or deep vein thrombosis. Postoperative pain (Group N, 0.53% vs Group T, 0.52%; p = .86), postoperative complications such as bruising (Group N, 6.78% vs Group T, 4%; N= .34) and paresthesia (Group N, 1.7% vs Group T, 6%; p = .27) showed no significant difference between the two groups on postoperative day 10. Conclusion: Tumescentless RFA with internal cooling and local hypothermia shows promising results with minimal complications. This novel approach represents a recent advancement in endovenous RFA that omits additional tumescent anesthesia.
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