Hi my baby is 10 months old. He had uti with psuedomonas aeruginosa bacteria growth heavy, greater than 1lakh. He was treated with piperacillin and amikacin antibiotics. After 21days Dr advised to take urine culture. Now bacteria growth is seen with moderate growth 40000. What treatment should be done for this? Dr suggested for mcu test and dmsa scan. Are those test mandatory for uti infection? Is this bacteria growth common in less than 1 yr baby? Thank you.