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a Royal Alexandra
Hospital for Children, Sydney, Australia: Centre for Kidney
Research, b Department of Radiology
Correspondence to: Dr Jonathan C Craig, Department of Nephrology, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8.
Accepted 19 November 1996
OBJECTIVE
To test the medical belief that the
micturating cystourethrogram (MCU) be deferred four to six weeks after
acute symptomatic urinary tract infection (UTI) because of the risk of
falsely detecting vesicoureteric reflux if performed earlier.
STUDY DESIGN
A cross sectional analytic study of
preschool children with first time symptomatic UTI.
RESULTS
Of the 284 eligible children, 272 (95.8%) had MCU at a median time of 29 days after diagnosis (range 5 to 167 days). Vesicoureteric reflux was present in 77 children
(28.3%). Beyond one week after diagnosis (270 children) the proportion
and severity of vesicoureteric reflux detected was not associated with
the timing of the MCU. Before one week, both children tested had
vesicoureteric reflux.
CONCLUSIONS
The presence and grade of
vesicoureteric reflux is not influenced by the timing of the MCU one
week after acute symptomatic UTI. There may be an association between
the MCU and the presence of vesicoureteric reflux for children tested
within one week after UTI. The MCU need not be deferred for four to six
weeks after UTI.
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