Related Experiment Videos
[Experimental studies on tissue injury by microwave tissue coagulator]
1First Department of Surgery, Akita University School of Medicine, Japan.
Nihon Geka Gakkai Zasshi
|November 1, 1991
Summary
Microwave Tissue Coagulator (MTC) causes heat and circulatory injury during liver surgery. Surgeons must avoid large vessels and prevent bile leakage to minimize MTC-induced tissue damage and infection.
Area of Science:
- Surgical Technology
- Hepatobiliary Surgery
- Biomedical Engineering
Context:
- The Microwave Tissue Coagulator (MTC) is a surgical device used for tissue ablation.
- Hepatic transection is a critical step in liver resections.
- Understanding device-induced tissue injury is crucial for patient safety.
Purpose:
- To clinically and experimentally assess the tissue injury caused by MTC during hepatic transection in dogs.
- To elucidate the mechanisms and extent of MTC-induced tissue damage.
- To provide recommendations for safe MTC utilization in hepatectomy.
Summary:
- MTC application (60W, 60s) transiently elevated liver enzymes (GOT, GPT), lactic acid, FDP, endotoxin, and worsened coagulation.
- Tissue injury mechanisms include direct heat damage (10mm) and circulatory infarct (20mm) from the needle electrode.
- Vessel injury extended up to 50mm, and wound infection significantly delayed granulation. Recommendations include avoiding large vessels and preventing bile leakage.
Impact:
- Provides critical data on MTC's thermal and vascular effects during liver surgery.
- Informs surgical technique to minimize collateral tissue damage and post-operative complications like infection.
- Enhances the safe application of MTC in hepatectomy procedures.