my Dad rushed into hospital a couple of weeks ago as he lost his vision for a few hours and felt dizzy,his heart was racing very quick..A week after i had to take him for his routine arthuitus test,his legs were very swollen and he was very breatless,they admitted him straight away,they said he had fluid on the lungs and his heart was reving 200 at the to and 50 revs at the bottom..He was on alot of medication and two days ago his heart started racing fast again.The swelling has gone down in his legs..It IS DIFFICULT FOR ME AS HE LIVES 200 MILES AWAY,So i have to just take his word for it..What is actually going on with his heart,is it life threatening ? Thankyou..Mandy