Radio-frequency tissue ablation in liver trauma: an experimental study

Area of Science:

• Surgical Innovation
• Hepatobiliary Surgery
• Minimally Invasive Procedures

Background:

• The liver is the most frequently injured intra-abdominal organ, posing significant clinical challenges.
• Effective hemostasis is critical for managing severe hepatic trauma.
• Existing treatments for liver injuries may have limitations.

Purpose of the Study:

• To experimentally evaluate the efficacy and safety of radio-frequency tissue ablation (RFA) for treating severe liver trauma.
• To assess RFA's hemostatic capabilities in grade III and grade III-IV hepatic injuries.
• To compare outcomes of RFA treatment versus untreated controls in a porcine model.

Main Methods:

• Induction of grade III and grade III-IV liver trauma in 10 domestic pigs.
• Application of RFA with cooled tip electrodes to achieve hemostasis at injury sites.
• Histologic and radiologic examination of liver tissues at multiple time points (0, 3, 7, 14, 21 days).
• Inclusion of a control group with untreated liver trauma.

Main Results:

• Complete hemostasis was achieved in all RFA-treated animals.
• Zero mortality and morbidity were observed in the RFA treatment group.
• No abdominal complications (blood, pus, bile) were detected at sacrifice.
• Histology revealed a distinct three-zone lesion pattern around electrode placement.
• Untreated control animals died immediately postoperatively, confirming injury severity.

Conclusions:

• RFA is an efficient and safe hemostatic method for managing severe hepatic trauma (grade III and III-IV).
• The technique demonstrated excellent safety with no observed mortality or morbidity.
• Further clinical investigations are warranted to translate these findings to human application.