Have you ever been diagnosed with VT? Pacs and Pvcs will rarely cause someone to fall into a fatal arrhythmia unless there is some sort of damage to the ventricles like scarring or dead heart muscle from a heart attack. Even short runs of VT may not be the dangerous kind but rather a run of pvcs. The VT really generally needs to be caught in a reentry circuit, be sustaining versus nonsustaining (nvst) for it to lead to cardiac death. It doesn't happen that often and you generally will have time to reach a hospital. Of course no one can guarantee you won't die from sudden cardiac death, any one of us can but if your heart has been evaluated to be structurally normal and you just have some annoying extra beats try to not let the situation steal your life. Many people have these extra beats and go on to die from something totally unrelated. They are very common so try to shift your focus to your family instead of your heart. Take care.