HELP WITH MY HEALTH

I HAVE HAD A HISTORY OF SEIZURE WHICH HAVE BEEN FELT TO BE PSYCHOGENIC DUE TO THE MONITORING.  HOWEVER, I HAD WHAT ANOTHER DOCTOR WITNESSED FEELING IT WAS A TRUE SEIZURE.  I WAS TRANSPORTED TO HOSPITAL AND FOUND TO BE HAVING VENTRICULAR TACHYCARDIA.  I WAS ADMITTED, ON THE ECHOCARDIOGRAM SUMMARY BASICALLY NORMAL .  THE RIGHT VENTRICLE WAS MILDLY DILATED, ESTIMATED PEAK PULMONARY ARTERY SYSTOLIC PRESSURE 30 mmHG.  THE ELECTROENCEPHALOGRAM SHOWED DURING HYPERVENTILATION THE PATIENT DID HAVE MILD ATRIAL FIBRUILLATION WITH SOME OCCASIONAL PREMATURE VENTRICULAR CONTRACTIONS RETURNED TO BIGEMINY RHYTHM POST HYPERVENTILATION.THE CARDIA CATH.  WAS NORMAL WITH SUMMARY READING EF ESTIMATED BY CONTRAST VENTRICULOGRAPHY WAS 50 %.  THERE IS NO ANGIOGRAPHIC EVIDENCE FOR CORONARY ARTERY DISEASE.  I HAVE A REVEAL MONITOR IMPLANTED WHICH HAS SHOWN SEVERAL HEART RATES AROUND 30-49, ALSO ALOT OF PVC'S THE MEDICINE HAS SEEMED TO STOP THE SKIPPING BEATS THE BEST I CAN TELL.  I ALSO HAVE HYPOTHYROIDISM, AND HYPERTENSION, I ALSO AM OBESE.  MY CONCERN IS THAT I MAY NEED A DIFIBULATOR OR PACEMAKER WHAT WILL STOP ME  FROM SUDDEN CARDIAC DEATH?