A 75-year-old man is admitted to the hospital for a severeurinary tract infection. A catheter is put in place and he is givena regimen of the appropriate antibiotics. The infection initiallybegins to respond to the antibiotics as the bacterial count of theurine sample shows a decrease in number. After a number of days inthe hospital with the catheter still in place the bacterial numbersbegin to rise again Assuming the type of antibiotic and the initialdosage was correct, what may be the explanation for the resurgenceof the infection? What action(s) may be taken to bring theinfection back under control without radically changing theantibiotic treatment in place?
