skip to main content

Febrile urinary tract infection — RACP Paediatrics MCQ

Instant feedback + full explanation. One question, done properly.

ModerateRenalFebrile urinary tract infectionRACP Paediatrics

A 5-month-old boy has a febrile urinary tract infection with poor urine stream since birth. Urine culture grows E. coli and he improves on antibiotics. What is the most appropriate investigation after acute treatment is underway?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Renal tract ultrasound to assess for structural abnormality

A febrile UTI in an infant with poor stream suggests possible obstruction or structural abnormality, so renal tract ultrasound is appropriate. Routine CT is excessive and adds radiation. The pearl is that atypical features such as poor stream, sepsis, non-E. coli organisms or poor response change the imaging threshold.

Reference: RCH Clinical Practice Guidelines: Urinary tract infection; Therapeutic Guidelines (eTG): Antibiotic