Shouldn’t need to premeditate on anti-biotics unless advised to do by the operator.
Typically, If a procedure requires antibiotics it will be given during the procedure and prophylactic maintenances will be maintained afterwards
Hi if you are not diagnosed with Rheumatic heart disease or if you tested for ASO titer before I think you don't need to some kind of antibiotic prophylaxis. If you really want to be sure you can do ASO titer (much cheaper) than doing repeat Echo.