References: Laxative
J Pediatr Gastroenterol Nutr. 1999 Aug;29(2):132-5.
Measurement of low dietary fiber intake as a risk factor for chronic constipation in children.
Morais MB, Vitolo MR, Aguirre AN, Fagundes-Neto U.
Division of Pediatric Gastroenterology, Universidade Federal de Sao Paulo-Escola Paulista de Medicina, Sao Paulo, Brazil.
BACKGROUND: Scarce information exists regarding dietary fiber intake in children with chronic constipation. The objective of this case-control study was to evaluate the intake of fiber as a risk factor for chronic constipation. METHODS: Fifty-two children with a mean age of 6.8+/-3.2 years who had chronic constipation were age and gender matched with 52 children with normal intestinal habits. The fiber content of the diet was evaluated with a 24-hour dietary recall. Two tables of fiber composition in foods were used: a Brazilian table, and a table based on the method of the Association of Official Agricultural Chemists (AOAC). RESULTS: According to the Brazilian table, the median intake of fiber (in grams per day) by the constipated and the control groups was 13.8 and 17.3, respectively, for total fiber (p = 0.020), 6.8 and 9.7 for insoluble fiber (p = 0.004), and 6.5 and 7.6 for soluble fiber (p = 0.104). According to the AOAC table, the constipation group (9.7 g/day) also had lower (p = 0.0022) intake of total fiber than the control group (12.6 g/day). The coefficient of correlation between the two tables on fiber content of food was +0.82 (p < 0.001) in the constipation group and +0.86 (p < 0.001) in the control group. The intake of fiber was less than the minimum recommendation (age + 5 g) and statistically associated (p = 0.001) with the constipation group (75.0%) in comparison with the controls (42.5%). The odds ratio was 4.1 (95% confidence limits, 1.64-10.32). CONCLUSION: Intake of fiber below the minimum recommendation is a risk factor for chronic constipation in children.
Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10435648&dopt=Abstract constipation laxative colon cleansing
J Pediatr Gastroenterol Nutr. 1999 Aug;29(2):190-3.
Constipation in school-aged children at public schools in Rio de Janeiro, Brazil.
de Araujo Sant'Anna AM, Calcado AC.
Faculty of Medicine, Department of Pediatrics, State University of Rio de Janeiro, Brazil.
BACKGROUND: Constipation in childhood is a significant problem worldwide; however, understanding of its epidemiology is limited. Some investigators in the United States have estimated the prevalence of constipation to be 1.2% to 8.0% in the general population. In Brazil, some have found a prevalence of up to 36%. METHODS: This cross-sectional, descriptive, observational prevalence study included 391 pupils (age range, 8-10 years) who were attending three public education centers in Rio de Janeiro. The prevalence of constipation, associated symptoms, and dietary fiber intake were evaluated by questionnaire. A child was considered to be constipated when he or she reported difficulty in defecating two or more times per week. The children were divided into constipated and nonconstipated groups, and the presence of fecal soiling, blood in the feces, and shape of the feces were assessed. RESULTS: Twenty-eight percent of the children were constipated. There was no significant difference between the sexes. Blood in the stools was significantly more frequently reported by the constipated children (p < 0.01). There was no significant difference in the prevalence and frequency of fecal soiling or in the stool shape between the constipated and nonconstipated children (p > 0.1). Fiber content in the diet ranged from 3.4 to 4.8 g per day, which is below the range recommended. CONCLUSIONS: The prevalence of constipation in Rio de Janeiro is similar to the rates reported in all of Brazil and in a recent study from the United Kingdom but is much higher than that in the United States. In addition, the school menu was found to contain inadequate dietary fiber content.
Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10435657&dopt=Abstract constipation laxative colon cleansing
Eur J Gastroenterol Hepatol. 1999 Jul;11(7):701-8.
Abnormalities of upper gut motility in patients with slow-transit constipation.
Mollen RM, Hopman WP, Kuijpers HH, Jansen JB.
Department of Surgery, University Hospital Nijmegen, The Netherlands.
OBJECTIVE: To further delineate motor activity of the upper gastrointestinal tract in patients with slow-transit constipation. DESIGN: A prospective study comparing healthy volunteers with patients with a clinical diagnosis of slow-transit constipation. METHODS: Eighteen patients with clinical diagnosis of slow-transit constipation and 10 healthy controls were included in the study. Fasting antroduodenal motility was measured by perfusion manometry for at least one complete cycle of the migrating motor complex or a maximum of 300 min. Oesophageal manometry, gastric emptying and orocaecal transit time measurements were also performed. RESULTS: At least one complete cycle of the migrating motor complex was observed in all controls, but in only nine patients (P < 0.01 versus control). The migrating motor complex cycle was incomplete (n = 5) or phase 3 activity was absent (n = 4) in the other patients. The incidence of clustered contractions was significantly increased in slow-transit constipation (P = 0.05 versus controls). The area under the contraction curve during late phase 2 (1509+/-296 mmHg x s) in patients with a complete cycle was significantly smaller than that in controls (2997+/-614 mmHg x s; P = 0.05). Orocaecal transit time was not significantly different among patients and controls, but oesophageal motility was abnormal in five of 18 patients and gastric emptying was abnormal in eight of 15 patients. CONCLUSION: Abnormalities of upper gut motility occur frequently in patients with slow-transit constipation. Interdigestive antroduodenal motility is characterized by (i) absence or prolonged duration of the migrating motor complex, (ii) an increased number of clustered contractions, or (iii) a decreased motility during late phase 2 of the migrating
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