Dear friend, welcome to HCM!
Faropenem is not a good antibiotic for klebsiella pneumoniae
. it is a hybrid new antibiotic and not a carbapenem and will not work for ESBL klebsiella.
Was it tested in the culture and was the kleb. ESBL?
asymptomatic UTI may occur and a stent
if thought infected, should be replaced.
I think that is what your doctors are considering. If obstruction is relieved and RFTs are normalised, stent removal can be done nad stones addressed later.
Can you post details of the sensitivity report of klebsiella and any urine routine reports done after treatment to see if there is still UTI.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.