OK. HERE GOES. SAW A MEW CARDIOLOGIST TODAY. HAVE ATRIAL/VENTRICULAR

OK. HERE GOES. SAW A MEW CARDIOLOGIST TODAY. HAVE ATRIAL/VENTRICULAR TACHYCARDIA. HAVE DEFIBRILLATOR. ON DILATAZEM, COREG, RAMPIRIL, PRADAXA, FUROSIMIDE. NEW DR. TOLD ME TO STOP DILATAZEM AND TAKE COREG 4X DAILY. NEW DR. SAID I NEEDED MORE OF A BETA BLOCKER. DEFIBRILLABOR HAS GONE OFF NUMEROUS TIMES, LATEST EPISODE YESTERDAY. ALSO SEEING ELECTROPHYISIST TO CK PACEMAKER. MY QUESTION IS WHY IS HE TAKING ME OFF MEDICATION THAT IS CONTROLLING MY A/V FIB?