Ultrasound is an effective and noninvasive method of evaluating renal swelling in infants with their first urinary tract infection

• Aim: This study evaluated renal swelling in infants with a first urinary tract infection (UTI) by correlating renal length and volume with C-reactive protein (CRP) and body temperature. Methods: Ultrasounds were carried out on 104 infants at The Queen Silvia Children's Hospital, Gothenburg, Sweden - 58 boys (mean age 3.3 months) and 46 girls (mean age 4.8 months) - during the acute phase of their UTI. A second scan was performed on 94 of them 4 weeks later. Renal length and volume were computed to standard deviation scores (SDS). Results: The mean renal length and volume at the first ultrasound were 1.90 SDS (1.54) and 1.67 SDS (+/- 1.13) for the larger kidney and 0.86 SDS (+/- 1.01) and 0.84 SDS (+/- 0.90) for the smaller kidney. There was a significant decrease in renal length and volume between the two ultrasounds, with a mean difference of 0.96 SDS (+/- 1.24) and 1.07 SDS (+/- 1.10) for the larger kidney (p < 0.0001). The length and volume of the larger kidney correlated with CRP (p < 0.001), but only the renal length correlated with fever (p < 0.001). Conclusion: Early ultrasound determined renal swelling in infants with a UTI and may be a valuable noninvasive way of identifying infants with renal parenchymal involvement.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Pediatrik (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Pediatrics (hsv//eng)

Nyckelord

Infant

Kidney

Renal parenchymal involvement

Ultrasound

Urinary tract infection

acute pyelonephritis

vesicoureteral reflux

children

guidelines

volume

ultrasonography

diagnosis

scintigraphy

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)