Radio frequency (RF) ablation systems and methods for using the radio frequency ablation systems are disclosed. The RF ablation system may include an elongated member, an RF generator, and a processor. The elongated member may include a distal portion including one or more electrodes and the RF generator may be operatively coupled to one or more of the electrodes. The processor, which may be coupled to one or more of the electrodes, may obtain an output signal from the electrodes and may monitor changes in an elevation of an ST segment of one or more electrogram (EGM) readings of the obtained output signal. The processor may determine a level of one or more characteristics that are proportional to an elevated ST segment of EGM.
