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Updated: Oct 15, 2025

Application of Laparoscopic Hepatectomy Combined with Intraoperative Microwave Ablation in Colorectal Cancer Liver Metastasis
Published on: March 3, 2023
Hepatic Plexus Nerve Block for Microwave Ablation of Hepatic Tumors
Frank Hao1, Navid Eghbalieh1,2, Alexandra So1
1Department of Radiology, Division of Interventional Radiology, Ronald Reagan Medical Center at UCLA, David Geffen School of Medicine at UCLA, 757 Westwood Plaza, Ste 2125, Los Angeles, CA 90049.
Abstract:
Seven patients underwent microwave ablation of hepatic tumors; during ablation, a hepatic nerve plexus block was used for pain control. The mean visual analog scale (VAS) score for pain (scale, 0-10) was 0.3 ± 0.5 (SD) at baseline and 2.5 ± 1.4, 2.6 ± 1.4, and 2.3 ± 0.9 at 1, 5, and 10 minutes during ablation. Two patients reported a VAS score of 4 or greater during ablation, which improved in both patients to a VAS score of 3 after one rescue sedation dose. The remaining patients required no additional sedation. No major complication occurred. No patient required conversion to general anesthesia.
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