From the last two months, my father is being ill due to shortness of breath when he walks, climb steps and weakness. On the doctor's advise ECG taken and as per that report it says abnormal... The biggest problem we are facing is whenever a new tablets consumes he would have some reactions (cough, shortness of sleep at night etc.,). He is not able to come to city so could you help on what further test to be conducted to find the issue?