RESUMO
OBJECTIVE: To evaluate rectal sensitivity in patients with pediatric constipation (PC) and nonretentive fecal soiling (FNRFS) using pressure-controlled distention (barostat). STUDY DESIGN: Thresholds for rectal sensitivity (first sensation, urge to defecate, and pain), and rectal compliance were determined using a barostat. RESULTS: A total of 69 patients with PC (50 males; mean age, 10.9 +/- 2.2 years) and 19 patients with FNRFS (15 males; mean age, 10.0 +/- 1.9 years) were compared with 22 healthy volunteers (HVs) (11 males; mean age, 12.7 +/- 2.6 years). Sensitivity thresholds were not significantly different among the 3 groups. Rectal compliance was increased in 58% of the patients with PC (P < .0001 vs HVs). Rectal compliance did not differ between patients with FNRFS and HVs. Children with PC with abnormal rectal function required significantly larger rectal volumes at urge to defecate. CONCLUSIONS: Increased compliance is the most prominent feature in patients with PC. Because of higher compliance in these children, larger stool volumes are required to reach the intrarectal pressure of the urge to defecate. Children with FNRFS have normal rectal function.
Assuntos
Constipação Intestinal/fisiopatologia , Defecação/fisiologia , Reto/fisiopatologia , Adolescente , Criança , Complacência (Medida de Distensibilidade) , Feminino , Humanos , Masculino , Manometria/instrumentação , Manometria/métodos , SensaçãoRESUMO
OBJECTIVE: To compare the diagnostic accuracy of contrast enema (CE), anorectal manometry (ARM), and rectal suction biopsy (RSB) for the detection of Hirschsprung's disease (HD). STUDY DESIGN: Following a prospective protocol, infants suspected of HD underwent all 3 index tests. Children with positive results on 2 or more index tests or who continued to have severe bowel problems underwent a full thickness biopsy as reference standard. Clinical follow-up was the reference standard in all other children. RESULTS: Between 2000 and 2003, 111 consecutive patients (67 boys; median age, 5.3 months) in whom HD was suspected were enrolled. HD was found in 28 patients. RSB had the highest sensitivity (93%) and specificity (100%) rates, but values were not significantly different from CE (sensitivity, 76%; specificity, 97%) or from ARM (sensitivity, 83%; specificity, 93%). Inconclusive test results occurred in 8 infants with CE, in 15 infants with ARM because of agitation, and in 2 infants with RSB. CONCLUSION: RSB is the most accurate test for diagnosing HD, and it has the lowest rate of inconclusive test results.
Assuntos
Canal Anal/patologia , Enema , Doença de Hirschsprung/diagnóstico , Reto/patologia , Biópsia/métodos , Criança , Pré-Escolar , Meios de Contraste , Diatrizoato de Meglumina , Feminino , Seguimentos , Doença de Hirschsprung/cirurgia , Humanos , Lactente , Recém-Nascido , Masculino , Manometria , Valor Preditivo dos Testes , Estudos Prospectivos , Sensibilidade e Especificidade , SucçãoRESUMO
OBJECTIVES: To evaluate the prevalence of pediatric functional gastrointestinal disorders with the use of the Rome II criteria and to compare these data with the classic Iowa criteria. STUDY DESIGN: Patients recorded defecation and encopresis frequency. A standard history was taken and a physical examination including a rectal examination was done. The prevalence of both criteria was assessed and compared. RESULTS: One hundred ninety-eight consecutive patients (age, 0.66 to 15.76 years; 131 male subjects) were included. According to the Rome II criteria, 64%, 18%, and 21% of patients fulfilled the criteria for functional constipation, functional fecal retention, and functional nonretentive fecal soiling, respectively. Using the classic criteria, 74% and 18% of patients fulfilled the criteria for pediatric constipation and solitary encopresis, respectively; 16% of the patients fulfilling the pediatric constipation criteria were not recognized by the Rome II constipation criteria. Fair agreement was found between functional nonretentive fecal soiling and solitary encopresis. Encopresis was present in 79% of constipated children. CONCLUSIONS: The Rome criteria are restrictive and exclude several children with constipation. We recommend including encopresis and rectal digital examination and excluding arbitrary age limits and retentive behavior in the revision of the Rome criteria.