What energy parameter is evaluated in radiofrequency ablation?

In radiofrequency ablation, impedance is a critical energy parameter that is evaluated because it reflects the resistance encountered by the radiofrequency energy as it travels through the tissue. Impedance is influenced by the tissue's characteristics, such as its water content and temperature, which change as the tissue is heated during the ablation process. Monitoring impedance can provide real-time feedback on the tissue condition and the effectiveness of the ablation, ensuring controlled energy delivery and minimizing damage to surrounding structures. This is crucial for achieving a successful ablation while interlocking patient safety and treatment efficacy.

Other options, while relevant in various contexts, do not specifically capture the most direct measurement or feedback variable associated with the efficacy and safety of radiofrequency ablation, making impedance the most pertinent choice.