Patients returning to the emergency department (ED) within 72 hours of their visit may contribute to crowding and might indicate failure to give a proper assessment, treatment, or follow-up instructions. The aim of this study was to describe the rate of return visits in a tertiary care pediatric ED (PED) and find characteristics of children who return to the ED. We retrospectively reviewed all records of patients visiting our PED in Toronto during 2003. We collected demographic data, time of visit(s), and acuity. We excluded patients who left without being seen, left against medical advice, or were admitted to the hospital. We conducted univariate and multivariate analyses to determine odds ratio of variables associated with returning. Of 37,725 eligible children, 1990(5.2%) returned within 72 hours. One hundred fifty-six returned for a third visit, and 10 returned for a fourth visit. A quarter of the children who returned were younger than 1 year, and the younger the child, the higher the likelihood of returning; the higher the acuity of the first (index) visit, the higher the likelihood that a patient will return. Patients coming during the busiest hours, between 8 pm and midnight, were more likely to return. We found no significant seasonal differences in univariate or multivariate analysis. Five percent of our PED visits are return visits of children seen in the 72 hours before the visit. Younger children, with high acuity who come to the ED in the late evening hours, are most likely to return to the ED.

OBJECTIVE. We previously created a clinical dehydration scale. Our objective was to validate the clinical dehydration scale with a new cohort of patients with acute gastroenteritis who were assessed in a tertiary emergency department in a developed country. METHODS. A prospective observational study was performed in an emergency department at a large pediatric tertiary center in Canada. Children 1 month to 5 years of age with symptoms of acute gastroenteritis who were assessed in the emergency department were enrolled consecutively during a 4-month period. The main outcome measures were length of stay, proportion of children receiving intravenous fluid rehydration, and proportions of children with abnormal serum pH values or bicarbonate levels. RESULTS. A total of 205 children were enrolled, with a mean age of 22.4 ± 14.9 months; 103 (50%) were male. The distribution of severity categories was as follows: no dehydration (score of 0), n = 117 (57%); some dehydration (score of 1–4), n = 83 (41%); moderate/severe dehydration (score of 5–8), n = 5 (2%). The 3 dehydration categories were significantly different with respect to the validation hypotheses (length of stay, mean ± SD: none, 245 ± 181 minutes; some, 397 ± 302 minutes; moderate/severe, 501 ± 389 minutes; treatment with intravenous fluids: none, n =17, 15%; some, n = 41, 49%; moderate/severe, n = 4, 80%; number of vomiting episodes in the 7 days before the emergency department visit: none, 8.4 ± 7.7 episodes; some, 13 ± 10.7 episodes; moderate/severe, 30.2 ± 14.8 episodes). CONCLUSION. The clinical dehydration scale and the 3 severity categories were valid for a prospectively enrolled cohort of patients who were assessed in our tertiary emergency department. The scoring system was valuable in predicting a longer length of stay and the need for intravenous fluid rehydration for children with symptoms of acute gastroenteritis.