The cimetidine protocol: a convenient, accurate, and inexpensive way to measure glomerular filtration rate.
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Child↗
Biomedical subjects
Stanley Hellerstein
Publications and source records attributed to Stanley Hellerstein.
Prophylactic antibiotics in children at risk for urinary tract infection.
The outcome of using prophylactic antibiotics in children considered at risk for a urinary tract infection (UTI) was documented in 66 children during the period of suppressive antibiotics and for a follow-up period of 3.7+/-2.2 years (range 0.92-9.83 years). A breakthrough UTI occurred in 13 girls but none of the boys during the initial course of prophylactic antibiotics. During the follow-up period, 33 girls and 5 boys had no recurrence of infection, while 25 girls and 3 boys had UTIs. Statistical analysis of the data using chi-square and risk estimate relating factors for infection to the occurrence of a UTI showed that during the period of initial prophylactic antibiotic there was significant risk of infection among children with voiding dysfunction and abnormal kidneys and during the follow-up there was increased risk of infection among those with voiding dysfunction and vesicoureteric reflux (VUR) of grade 3 or greater severity. Lesser grades of VUR and constipation did not significantly increase the risk of UTI. These observations should be useful in developing a study to define the risks and benefits of prophylactic antibiotic in "at-risk" children.
Anti-Bacterial Agents↗
Voiding dysfunction in pediatric patients.
The goals of this study were to describe the pattern of voiding disorders in children in our community, to describe clinical criteria for making the specific diagnoses, and to comment on management. The medical records of 226 children referred because of voiding dysfunction or urinary tract infections (UTI) were evaluated. Children with normal voiding patterns when uninfected, with monosymptomatic nocturnal enuresis, and with known neurologic or anatomic abnormalities were excluded. Detrusor instability, an abnormal voiding pattern characterized by urgency with or without frequency, was the diagnosis in 175 of the 226 children. Children with detrusor instability who used various posturing maneuvers to avoid urinary incontinence had a significantly higher incidence of UTIs than those who did not attempt to obstruct urine outflow. Detrusor instability appeared to be secondary to constipation in 19 of the children. The other diagnoses were extraordinary daytime urinary frequency, infrequent voiding, monosymptomatic daytime wetting, transient voiding dysfunction, giggle incontinence, dysfunctional voiding, and unexplained dysuria. It is concluded that children with detrusor instability who use posturing maneuvers to avoid incontinence are at high risk for recurrent UTIs. Constipation is 1 cause of detrusor instability. Dysfunctional voiding, the form of voiding dysfunction most likely to result in renal damage, was present in only 2 of 226 children seen for voiding disorders.
Age Distribution↗
Outcome of overactive bladder in children.
One hundred forty-four children with a clinical diagnosis of overactive bladder were observed for a mean of 3.15 +/- 1.92 years. Initial management consisted of a behavioral modification program that included increased fluid intake, a timed voiding schedule and, if applicable, treatment of constipation. Those who failed to improve with the preceding intervention within 10 days to 2 weeks received an anticholinergic medication. Follow-up information was obtained by telephone. Caretakers and/or patients were asked a standard set of questions. The outcome with respect to urinary urgency, urinary frequency, daytime incontinence, posturing and urinary tract infections was recorded. After an average follow-up period of 3 years, 68 (47.2%) of the 144 children recovered from all symptoms of overactive bladder and 61 (42.4%) had decreased symptoms. Fifteen of the children, or 10.4%, still had all of the symptoms originally associated with overactive bladder. Children who had posturing as one of their symptoms had a significantly increased risk of urinary tract infection.
Behavior Therapy↗