Objective: The potential risk of inducing ventricular arrhythmias was explored by employing Pulsed Field Ablation (PFA) through the administration of both monophasic and biphasic waveform deliveries. Methods: Pulsed Field Ablation (PFA) was applied to specific locations in the right ventricle (RV, n=5 sites) in swine (n=2), utilizing identical settings with consistent amplitude, pulse width, and number of pulses for both monophasic and biphasic waveforms. PFA deliveries were precisely timed in 10-milisecond intervals across the entire T wave. Results: Using monophasic waveforms, ventricular fibrillation (VF) was induced 7/7 times when PFA pulses were delivered during the T wave. Biphasic waveforms resulted in no ventricular arrhythmias when PFA was delivered across the entire duration of T wave. Conclusions: Our findings indicate that VF can be consistently induced with monophasic pulse waves, but not with biphasic pulse waves in a porcine model.