<s>[INST] If you have a fib and also v fib due to genetic hypertrophy / wall thickness what are treatment options ? multaq controls a fib and carvedilol helps with v fib.....but still up to 900 events of vfib in 2 to 3 day period....is internal defibrilator the best option [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Are you sure you are having so many episodes of V fib? If yes, you should be on other medicines like Amiodarone besides carvedilol to control these afib and v fib episodes. Also, with so many v fib, you should be on internal defibrillator (icd) as well. Icd will be not be preventive for v fib but it's therapeutic, so you must on medicines also for prevention. Hope I have answered your query. Let me know if I can assist you further. </s>