I have Temporal Lobe Epilepsy and get PVCs, PACs, and had limited PSVT (all independent of the seizures)
I would discuss these symptoms with your doctor, specifically, the occurrence of the seizure and emergence of the rhythm issue. It appears that the seizure
, apparently even after the seizure
, (postictal) or between seizures (interictal) can effect the autonomic system which in turn effects the heart rhythm.