when doing MCU, u will have to bring your bb in, after u've lie your bb down, they will get u to go out, where they need to insert the tube. outside, u can hear your bb crying, after they insert, they will get u get to hold on to your bb while they do the scan. although i always feel so much heart pain whenever my son has MCU (he has done 4 so far), but it's awhile only, after the scan, he'll be back to normal..... it may sound heartbreaking, but i know it's for his own good, having the MCU is to ensure he's not having reoccurs reflux....
for those with low grade reflux (below 3), yes, they may recover themselves. but if things don't get better, it will scarred the kidney even more!
although my son 1st come down with high fever at 6mths old, he only had the operation at 15mths old, cause whenever the surgery is scheduled, he's down with UTI /fever again, hence the op was postpone, and this happens 3times....
although the op is successfully, but i still feel upset, cos he only has 1 functioning kidneys....