An 8-month-old boy is referred for evaluation following a urinary tract infection. Ultrasound examination of the abdomen is normal. The most appropriate investigation to evaluate his lower urinary tract is
Radionuclide cystogram
Micturating cystourethrogram
Intravenous pyelogram
Cystoscopy
Diagnostic imaging studies following UTI * Recommended radiological evaluation includes a combination of ultrasound abdomen, micturating urethrogram (MCU, most appropriate) and radionuclide renal scan. * Detailed radiological investigations are performed on all children: 1. Below 3-year-old with first UTI 2. Those with symptoms of pyelonephritis 3. Recurrent UTI 4. Abnormal voiding 5. Family history of UTI or hypeension. Procedure The estimated age-adjusted bladder capacity can be calculated using : linear equations: <1 year weight x 7 = capacity (mL) 2.5 x age + 38 = capacity (mL) <2 years: (age (years) + 2) x 30 = capacity (mL) 6 >2 years: ((age /2)+6) x 30 = capacity (mL) non-linear equations: (4.5 x age 0.40) x 30 = capacity Reference: GHAI Essential pediatrics, 8th edition
Urinary tract