Predictive factors for short-term symptom persistence in children after emergency department evaluation for constipation.

BACKGROUND: Children with symptoms and signs of constipation are commonly assessed in pediatric emergency departments (EDs). Little is known about their outcome following the ED visit.

OBJECTIVES: To describe the clinical characteristics of children presenting to the ED with constipation and the ED interventions; to measure short-term symptom resolution at 48 hours and 7 days after the ED visit; and to identify predictive factors associated with poor symptom resolution at 48 hours and 7 days after the ED visit.

DESIGN/METHODS: Cohort study conducted between July 10, 1997, and September 10, 1997, in a tertiary care pediatric hospital ED. All children (aged 1-18 years) with idiopathic constipation were included. Constipation was diagnosed if there were at least 2 of the following: abdominal pain, infrequent bowel movements, hard feces, fecal soiling, pain on defecation, and/or clinical evidence of excessively retained feces. Data on the presenting symptoms, signs, and ED treatment plan were collected on study enrollment and then in 2 standardized 10-minute telephone interviews at 48 hours and 7 days after the ED visit. At each follow-up, patient disposition was measured and dichotomized based on symptom resolution to "improved" vs "not improved." The presenting features and ED management were compared between groups using chi(2) analyses and t tests.

RESULTS: Consent and full questionnaire completion was obtained in 102 children. The mean + SD age was 6.5 + 3.8 years; 47 (46%) were male. The predominant presenting symptom was abdominal pain (83 [81%]); the most frequent sign was palpable abdominal stool (67 [66%]). A high-fiber diet (75 [74%]) and mineral oil (48 [47%]) were prescribed most frequently. Enemas were given to 64 (63%) of the children. Improvement was found in 32 (31%) of the children at 48 hours and in the majority at 7 days (77 [75%]). Risk factors for poor symptom resolution at both 48 hours and 1 week included: female sex (odds ratio [OR] = 2.6; 95% confidence interval [CI] = 1.0 6.6); history of recurrent abdominal pain (OR = 2.8; 95% CI = 1.2-6.5); duration of primary presenting symptom longer than 2 days (OR = 2.4; 95% CI = 1.0-6.4); and history of medical visits for the same symptom (OR = 2.3; 95% CI = 1.0-5.3). There was no difference in outcome based upon ED treatment (enema vs oral or no therapy) (OR = 1.0; 95% CI = 0.4-2.3).

CONCLUSIONS: Most children with constipation evaluated in the ED have acute symptoms and rapid improvement, regardless of presentation characteristics or ED management. In this study, 4 risk factors for poor outcome were found consistently at 48 hours and 7 days. This subgroup of children deserve closer clinical attention. Emergency department therapy did not influence short-term symptom resolution. Further studies are warranted to examine the effects of therapy for constipation in the ED setting. Arch Pediatr Adolesc Med. 2000;154:1204-1208.