Problem in breathing. And surgery?

On around 28/05/2022 my grandmother felt a sharp pain in her chest region. We urgently took her to the doctor and he wrote some medications after conducting the ECG and Echo. After that, although there is no pain but she gets palpitations in the afternoon time only and finds it really difficult to breathe. But that is only around 12pm-4pm and after that she gets fit and fine. The doctor has prescribed a medicine which is given to her after which she feels fine but the problem in breathings remains for a quite long time. This is a routine for everyday. Following are the photos of Report, ECG and Medications. Please tell that why she gets palpitations and is not able to breathe properly (ghabrahat) and what could be done to cure this ? What should be done now ? Shall she rely upon medications only or we must go for angiography and surgery ?