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  • 1
    ISSN: 1432-198X
    Keywords: Key words: Hemolytic uremic syndrome ; Epidemiology ; Escherichia coli O111 ; Disease outbreaks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract .Over a 3-month period, ten children (aged 1–13 years) from a 15-km radius in southern Picardy developed typical D+ hemolytic uremic syndrome (HUS). Polymerase chain reaction, using two pairs of verocytotoxin 1-(VT1) and VT2-specific oligonucleotide primers and an internal control was used to detect VT genes directly from stools samples. VT2 gene was detected in seven of nine patients’ stools and in 5 of 14 contacts’ stool samples. A VT2-producing Escherichia coli (VTEC) O111 was isolated from five of nine children’s stools and in 3 adults’ stools of the 14 tested. A retrospective case-control study was performed which showed a higher rate of absence in school A, where the first four cases were detected, compared with a control school. The odds ratio for the whole school was 2.77 (confidence interval 1.46 – 5.26), and 15 (confidence interval 2.54 – 115.6) if only the nursery classes were considered. A culture of all food samples from households was always negative for VTEC. A retrospective cohort study performed in 89% of children attending school A showed no linkage between food or drink and gastroenteritis. These findings emphasize the potential for person-to-person transmission of VT2-producing E. coli O111, since the only salient risk factor was close contact.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric nephrology 11 (1997), S. 193-195 
    ISSN: 1432-198X
    Keywords: Key words: Phosphate - Reduction ratio - Post dialysis phosphate rebound - Dialysis efficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Despite low end dialysis serum phosphate levels (Pe) the control of phosphate retention remains often unsatisfactory in dialyzed patients. In order to assess the value of Pe in dialyzed children as an indicator of dialytic phosphate removal, we studied serum phosphate kinetics over the period of dialysis and post dialysis and compared these with urea kinetics. A multicenter study was conducted in the 21 French pediatric hemodialysis units and included 144 children under 15 years of age. Blood urea and phosphate concentrations were measured at the beginning, at 45 min later, at the end of dialysis, and 30 min post dialysis. At 60 min and at 360 min post dialysis measurements were made only for a subgroup of 12 children. From the serum levels, reduction ratios for urea (URR) and phosphate (PRR) and post dialysis rebound for urea (PDUR) and phosphate (PDPR) were calculated. URR (over the dialysis session, 72%±9%) was higher than PRR (47%±12%). Moreover, urea removal continued throughout the dialysis period, while most of the reduction in phosphate occurred in the initial dialysis period. Post dialysis urea rebound was limited to the 60th min post dialysis, whereas post dialysis phosphate rebound occurred until the 360th min post dialysis; by this time the serum phosphate levels had almost reached the predialysis levels. In summary, serum phosphate kinetics over dialysis and post dialysis periods in children appear to be misleading for the quantification of phosphate removal, i. e., phosphate clearance is a poor indicator of dialytic phosphate removal.
    Type of Medium: Electronic Resource
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