laxative



References: Laxative







Am J Gastroenterol. 2003 May;98(5):1117-22.
Incidence of colonic ischemia, hospitalized complications of constipation, and bowel surgery in relation to use of alosetron hydrochloride.

Miller DP, Alfredson T, Cook SF, Sands BE, Walker AM.

Ingenix, Epidemiology Division, Newton, Massachusetts 02466, USA.

OBJECTIVE: Alosetron hydrochloride (Lotronex), a potent selective 5-hydroxytryptamine(3) receptor antagonist, was approved in February, 2000 in the United States for the treatment of diarrhea-predominant irritable bowel syndrome (IBS) in women. Marketing was suspended in November, 2000, after reports of colonic ischemia and serious complications of constipation. We sought to compare the incidence of colonic ischemia, hospitalized complications of constipation, and bowel surgery among alosetron users and a cohort of patients with IBS who did not use alosetron. METHODS: We sought outcomes of colonic ischemia, hospitalized complications of constipation, and bowel surgery in 3,631 Lotronex users and 2,480 comparison IBS subjects using diagnoses, procedures, and drugs recorded in the UnitedHealthcare insurance claims database, and validated these by chart review. The initial assessment was to last for 3 yr beginning with the start of alosetron treatment and was to include 10,000 Lotronex users; however, the observation period ended by December 31, 2000, after suspension of marketing. RESULTS: There were 3631 alosetron users among members of UnitedHealthcare from March through December, 2000, and we identified 2480 comparison IBS-only patients; follow-up time averaged about 5 months in both groups. There were no instances of colonic ischemia in either cohort. Thirty instances of bowel surgery occurred, giving rates of 10.2/1000 person-yr in the alosetron cohort and 11.8/1000 person-yr in the IBS/no alosetron cohort. There were three cases of hospitalized complications of constipation. The incidence rates were essentially the same in alosetron users (1.24/1000 person-yr) and in IBS patients with no alos



Am J Gastroenterol. 2003 May;98(5):1123-34.
Automated quantitative analysis of nocturnal jejunal motor activity identifies abnormalities in individuals and subgroups of patients with slow transit constipation.

Scott SM, Picon L, Knowles CH, Fourquet F, Yazaki E, Williams NS, Lunniss PJ, Wingate DL.

Gastrointestinal Physiology Unit, Academic Department of Surgery, Queen Mary's School of Medicine and Dentistry, London, United Kingdom.

OBJECTIVE: Small bowel dysmotility has previously been demonstrated in some patients with slow transit constipation (STC), suggesting a generalized intestinal disorder. However, no study has addressed whether the incidence of small intestinal dysfunction differs between subgroups of patients in this heterogeneous population. Using appropriate methodology, we aimed to determine prospectively the proportion of individuals with abnormal small bowel motility, and to assess whether heterogeneity in terms of pattern of colonic transit delay (based on (111)In diethylene-triamine-pentaacetic acid (DTPA) isotope scintigraphy), or mode of onset (based on clinical history) is of importance. METHODS: Thirty-seven patients with STC underwent 24-h ambulatory jejunal manometry; data were compared with those obtained in 38 healthy controls. Automated quantitative analysis of seven variables of the nocturnal migrating motor complex was performed, to assess whether differences existed between groups, and whether individual patients had evidence of small intestinal dysmotility, defined as two or more measures of migrating motor complex variables outside the normal range. Four variables differed significantly between STC patients and controls: in phase III, propagation was slower, duration was longer, and contraction amplitude was higher; in phase II, contraction frequency was increased. Seven of 24 patients with a generalized pattern of colonic transit delay had abnormal small bowel motility compared with none of 13 with a left-sided delay (p < 0.04). These included four patients w



J Am Med Dir Assoc. 2001 Jul-Aug;2(4):149-54.
Assessment of constipation management in long-term care patients.

Phillips C, Polakoff D, Maue SK, Mauch R.

Long Term Care Services, Sutter Health, Sacramento, CA, USA.

OBJECTIVES: To determine the prevalence of diagnosed constipation among nursing home patients; to assess the prevalence of routine (at least one time per week for 4 consecutive weeks) laxative use; and to investigate prescribing practices. DESIGN: A retrospective multi-center medical record evaluation. SETTING: Any one of 25 nursing facilities representative of a long-term care pharmaceutical provider's geographical coverage. PARTICIPANTS: All patients under the age of 65, and/or who had resided in the facility for less than 4 weeks, and/or who were placed in a specialty care bed (eg, Alzheimer's disease, hospice, HIV/AIDS) were excluded. RESULTS: A total of 712 resident charts meeting initial inclusion criteria were screened, 392 (55%) of which had a documented diagnosis of constipation and/or routine laxative use. Approximately 28% (CI +/- 3.3) of residents had a documented diagnosis of constipation. The rate of laxative use within the same sample population of 712 patients was 53.8% (CI +/- 3.7). Of the 392 patients with a diagnosis of constipation and/or routine laxative use, over 72% had at least one diagnosis or medication known to precipitate constipation. The most commonly prescribed laxatives were stool softeners (26.2%), saline laxatives (18.4%) and stimulant/irritant laxatives (15.6%). Almost half of the laxative users were prescribed more than one agent. CONCLUSION: This study supports the concern that there is often a gap between documentation of symptoms and constipation treatment decisions. No correlation was found between the specific laxative prescribed and the presence or absence of a documented diagnosis of constipation. Treatment decisions should be based on thorough examination and individualized patient needs. Furthermore, there is a need to increase monitoring fo



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