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13.02.2019 | Laboratory Investigation | Ausgabe 6/2019

CardioVascular and Interventional Radiology 6/2019

In Vitro Bovine Liver Experiment of Cisplatin-Infused and Normal Saline-Infused Radiofrequency Ablation with an Internally Cooled Perfusion Electrode

Zeitschrift:
CardioVascular and Interventional Radiology > Ausgabe 6/2019
Autoren:
Myung Sub Kim, Hyun Pyo Hong, Kyungmin Park, Kyung A. Kang, Sung Ryol Lee
Wichtige Hinweise

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Abstract

Purpose

To evaluate the efficacy of cisplatin-infused and normal saline-infused radiofrequency ablation (RFA) with internally cooled perfusion (ICP) electrode.

Materials and Methods

Using a 200 W generator, thirty ablation zones were created and divided into three groups of 10 each as follows: group A, RFA alone with 16 gauge monopolar internally cooled (IC) electrode; group B, cisplatin-infused RFA with 16 gauge ICP electrode; and group C, normal saline-infused RFA with 16 gauge ICP electrode. Radiofrequency was applied to the explanted bovine liver for 12 min. During RFA, cisplatin and normal saline were injected into tissue at a rate of 0.5 mL/min through the ICP electrode by injection pump. Dimensions of the ablation zone and technical parameters were compared between the three groups.

Result

In the cisplatin-infused RFA group, the ablation zone size was significantly larger than that of the RFA-alone group but significantly smaller than normal saline-infused RFA group. The width of longitudinal section and volume were 3.39 ± 0.22 cm2 and 26.55 ± 4.62 cm3 in RFA-alone group, 3.88 ± 0.32 cm2 and 36.45 ± 5.46 cm3 in cisplatin-infused RFA group, and 4.52 ± 0.50 cm2 and 49.44 ± 7.55 cm3 in normal saline-infused RFA group, respectively (p < 0.05 between any two groups). The mean impedance in group A, B, and C were 60.0 ± 7.2, 50.3 ± 2.5, and 40.3 ± 4.0 Ω, respectively (p < 0.05 between any two groups).

Conclusion

Cisplatin-infused RFA with ICP electrode created the larger size of ablation zone than that of monopolar RFA with an IC electrode, but created the smaller size of ablation zone than that of normal saline-infused RFA.

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