Garcia et al.[7] Bilgen et al.[3] Pashapour et al. [8] Ghaemi et al.[10] Xinias et al.#[5] Chen et al.[9] Omar et al.[13] Shahian et al.[11] Mutlu et al.[12]
Age <8 weeks <2 weeks 2-4 weeks ~10 days 3-25 days <8 weeks <4 weeks < 4 weeks 4-14 days
No of patients 160 102 100 400 462 217 152 120 104
Patients with UTI 12 (7.5%) 8 (7.8%) 6 (6%) 23 (5.8%) 30 (6.5%) 12 (5.5%) 32 (21%) 15 (12.5%) 19 (18%)
Urine collection method Catheter Catheter Suprapubic aspiration Suprapubic aspiration Suprapubic aspiration Suprapubic aspiration + catheter + urine bag ♀: Catheter
♂: Urine bag
Catheter Catheter
Patients with urinary tract abnormalities in USĀ  6 (55%)* 3 (37.5%) 1 (16.6%) 4 (17.4%) 5(16.6%) ? 7 (4.6%) 3 (20%) 5 (26%)
(+) finding in ultrasonography HN: 3
PE: 2
Stone: 1
HN: 1
PE: 2
HN: 0
PE: 0
HN: ?
PE: ?
HN: 1
PE: 2
? PE: 7 HN: 3 HN: 1
PE: 4
VUR 0** 1 (12.5%)
Grade III-IV (U)
1 (16.6%)
Grade III-IV (U)
1
?
5 (16.6%)
Grade II (U):2
Grade III (U):2
Grade IV (B):1
? 0**** 0 2 (1%)
Grade III-IV (U):1 Grade V(B) + PUV: 1
(+) finding on scintigraphy - 0*** 1 (16.6%) - 14 (46.7%) ? - - 1 (5%)
Timing of scintigraphy - 3rd month ? - Acute phase (?) ? - - Acute phase (?)
UTI: urinary tract infection, US: Ultrasonography, VUR: vesicoureteral reflux, HN: hydronephrosis, PE: pelviectasis, U: unilateral, B: bilateral
#: 32% of the patients were symptomatic.
*: Ultrasonography was performed in 11 of 12 patients.
**: Voiding cystourethrogram was performed in 4 of 6 patients.
***: Scintigraphy was performed in 7 of 8 patients.
****: Voiding cystourethrogram was performed in 12 of 32 patients.
Table 1: Clinical studies on asymptomatic and afebrile jaundiced infants.