Hi, There are different types of fast heart rates. The first one when patient s normal rhythm increases, in this case there is no need for any surgery, it is treated with medications. The second most frequent cause of fast heart rate is atrial fibrillation, in this case if rhythm is not restored, we try to do it with medications or electrical cardioversion. If there are multiple episodes of atrial fibrillation, patient may be advised to a invasive correction, which is a minioperation, but there are also patients, which remain with atrial fibrillation, and it heart rate is regulated with medications. There are other fast heart rhythms, such as atrial tachycardia or atrial flutter, ventricular tachycardia, in every case the treatment can be either with medications or a minioperation, depends on the patient s parameters. But if your father doesn t want to undergo a surgery, it is his right and choice, he can be managed with medications. Hope this was helpful Wishing you good health In case of further questions don t hesitate to ask Regards