Suggest Treatment For Fever And Lethargy

MY WIFE IS 56 YEARS YOUNG, IN JUNE 2016 SHE HAD FEVER FOR 3 DAYS AND SHE WAS FEELING VERY LETHARGIC, THEN DOCTOR ASKED FOR ECG TO BE TAKEN THERE WAS GAPS IN THE ECG, DOCTOR ADVISED TO SHOW TO CARDIOLOGIST, WENT TO NAVAL HOSPITAL -COLABA-MUMBAI- THERE WE WERE TOLD TO GET CHEST X-RAY DONE , IT WAS NORMAL. THEN 2-D ECHO WAS TAKEN THERE WAS SOME PROBLEM INDICATED IN THAT, NEXT WEEK WERE TOLD TO GET STRESS THALLIUM DONE, THAT WAS DONE TOO. FINALLY THE DOCTOR SAID ITS LBBV AND FIXED EF 405. PUT ON MEDICATION OF ASPIRIN, LOSARTAN ATORVAS, AND SAID TO GET A REVIEW DONE AFTER 6 MONTHS. NOW SHE HAS STARTED ATTENDING YOGA CLASSES SINCE YESTERDAY, IS IT GOOD, WILL IT IMPROVE HER EF? ( BOTH MEDICATIONS& YOGA. LAST MONTH WANTED TO START HER GYMM WITH TREADMILL, BUT DOCTOR WARNED ME NOT TO. PLEASE ADVISE