RT Book, Section A1 Srinivas, Nivedita S. A1 Schroeder, Alan R. A2 Shah, Samir S. A2 Kemper, Alex R. A2 Ratner, Adam J. SR Print(0) ID 1157322416 T1 Urinary Tract Infections T2 Pediatric Infectious Diseases: Essentials for Practice, 2e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259861536 LK accesspediatrics.mhmedical.com/content.aspx?aid=1157322416 RD 2024/04/25 AB Urinary tract infection (UTI) is defined by the presence of a significant number of microorganisms within the urinary tract, which is usually sterile, coupled with pyuria. UTIs are typically divided into lower tract disease, where infection is localized to the bladder and urethra (cystitis and urethritis, respectively), and upper tract disease, where it extends to the ureter and kidney (pyelonephritis). Although either upper or lower tract disease may result in significant morbidity, pyelonephritis has been associated with renal scarring and subsequent hypertension, chronic renal disease, and preeclampsia.1,2