Dear sir, My father is 66 year old and he got mild attack 20 years back, he was admitted in hospital for 1 month and completed the treatment, and he didn't have any issues till age of 64, now he is facing high heart rate about 200+ heart beats at this time he is getting very tierdtired and nausea and vomiting not able to take water also. This happened 3 times in this 2 years we consulted doctor where they said his heart functions only 30% hence surgery not possible. I need your valuable assistance and treatment advice on this.