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Use of laxatives in institutions for the mentally retarded.

OBJECTIVE: To study, in institutionalized mentally retarded patients, the prevalence of regular laxative use, and to identify its correlates. METHODS: Twenty-one of the 22 institutions for the mentally retarded in Flanders (Belgium) provided the setting for the study, which included a population of 3712 residents with an IQ of < 50. This was a descriptive cross-sectional study of a random sample of 20 patients per institution, consisting of a structured interview of the personnel responsible for daily care of the selected patients. The study population consisted of 420 mentally retarded patients. Their median age was 29 years (range 2-72 years). Twenty-six percent of patients had an IQ of 35-49, 40% an IQ of 20-34 and 34% an IQ of <20. Sixteen percent of the patients were non-ambulant. RESULTS: Regular laxative use was found in 26.4% (111/420) of the residents. In addition, occasional laxative use was found in 2% (10/420) of the residents. Oral laxatives were used daily by 13% (56/420) and oral laxatives daily in combination with enemas were used by 9% (39/420). Enemas but no oral laxatives were used by 3% (11/420); manual evacuation in combination with oral laxatives and enemas was used by 1% (5/420). Seventy-eight percent (78/100) of the oral laxative users used them for more than 1 year. Seventy-one percent (71/100) used one laxative, 23% two and 6% three. Thirty different brands of oral laxatives were used. Sixty-seven percent (67/100) used osmotic laxatives alone or in combination, 30% used stimulant laxatives, 19% used bulk forming laxatives and 19% mineral oil. Oral laxatives were always prescribed by attending physicians, while enemas were also initiated by nurses in 35% (18/52). Laxative use was positively and independently correlated with female gender, with being non-ambulant, with oral motor dysfunction and with the use of medication other than laxatives. It did not correlate with age. Within the institutions, laxative use varied from one to 15 users out of the 20 randomly selected patients (median 4/20). CONCLUSION: Laxative use is frequent in institutions for the mentally retarded, with a large inter-institution variation, indicating that constipation is an important problem and underlining the need for research into cost-effective treatment.

Adolescent↗

Laxatives for the management of constipation in palliative care patients.

BACKGROUND: Constipation is a common problem for palliative care patients which can generate considerable suffering for patients due to both the unpleasant physical symptoms and psychological preoccupations that can arise. There is uncertainty about the 'best' management of constipation in palliative care patients and variation in practice between palliative care settings. OBJECTIVES: To determine the effectiveness of laxative administration for the management of constipation in palliative care patients, and the differential efficacy of the laxatives used to manage constipation. SEARCH STRATEGY: We searched The Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue four, 2005), MEDLINE (1966 to January 2005), EMBASE (1980 to January 2005), CANCERLIT, PUBMED, Science Citation Index, CINAHL, The Cochrane Library, SIGLE, NTIS, DHSS-DATA, Dissertation Abstracts, Index to Scientific and Technical Proceedings and NHS-NRR and reference lists of articles. SELECTION CRITERIA: Randomised controlled trials (RCTs) comparing laxatives for constipation in palliative care patients. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed trial quality and extracted patient-reported data measuring changes in stool frequency and ease of passing stools, using objective and validated scales. Tolerance or adverse effects of laxatives used were also sought. The appropriateness of synthesizing data from the controlled trials depended upon the clinical and statistical homogeneity of studies identified. If the controlled trials were homogeneous, a meta-analysis would be attempted. MAIN RESULTS: Four trials involving 280 people were included. Between these trials, the laxatives lactulose; senna; danthron combined with poloxamer (Co-danthramer); Misrakasneham; magnesium hydroxide combined with liquid paraffin (Milpar) were evaluated. All four trials included number and frequency of bowel movements and relative ease of defecation as part of the assessment of laxative efficacy. All of the laxatives demonstrated a limited level of efficacy, although a significant number of participants required rescue laxatives in each of the studies. The only significantly different treatments were in the trial where lactulose plus senna were more effective than danthron combined with poloxamer. Patient preference did not favour either treatment option. Other related systematic reviews have similarly identified that there is a lack of evidence to support the use of one laxative, or combination of laxatives, over another. AUTHORS' CONCLUSIONS: The treatment of constipation in palliative care is based on inadequate experimental evidence, such that there are insufficient RCT data. Recommendations for laxative use can be related to costs as much as to efficacy. There have been few comparative studies, equally there have been few direct comparisons between different classes of laxative and between different combinations of laxatives. There persists an uncertainty about the 'best' management of constipation in this group of patients.

Cathartics↗

Constipation--modern laxative therapy.

It is estimated that one third of the population in Western industrial countries suffers from constipation at least from time to time. Constipation may have somatopathic or functional causes. Furthermore, a great number of substances are known to cause medication-induced constipation, i.e. opioid-induced constipation is caused by linkage of the opioid to opioid receptors in the bowel and the central nerve system. Whenever possible, causal therapy should be undertaken. Patients in palliative care mostly suffer from chronic functional constipation. The treatment consists of basic measures and the application of laxatives. According to their mode of action, they are divided into bulk-forming laxatives, osmotic laxatives, stimulant laxatives, lubricating agents and others. Bulk-forming laxatives are not recommended for use in palliative care patients, for such patients are normally not able to take in the required amount of fluids. Osmotic laxatives are divided into (magnesium) salts, saccharine, alcohols and macrogols. Lactulose is the most popular saccharine laxative. Because of its side effects (flatulence, bloating and abdominal cramping), lactulose is not a laxative of our choice; instead, we prefer to give macrogol. Orally administered, macrogol is not metabolised and pH value and bowel flora remain unchanged. Macrogol hydrates hardened stools, increases stool volume, decreases the duration of colon passage and dilates the bowel wall that then triggers the defecation reflex. Even when given for some time, the effectiveness of macrogol will not decrease. Because of its high effectiveness and commonly good tolerance, macrogol has become the laxative of first choice in palliative care patients with all kinds of chronic constipation, if these patients are able to take in the necessary amount of fluids. From the general medical point of view, lubricating agents have become obsolete. In palliative care patients, however, they are still important laxatives for prophylactic treatment or therapy of constipation. Due to clinical experience, in palliative care a laxative ladder has proven successful.

Aged↗

Correlates of regular laxative use by frail elderly persons.

PURPOSE: To examine the demographic, clinical, and pharmacological correlates of regular laxative use in elderly persons residing in a long-term care setting. METHODS: This was a cross-sectional study using retrospective record review undertaken in an academically affiliated long-term care facility in the United States. All individuals residing in the institution for at least 1 month (n = 694) were characterized regarding use of laxatives. Regular laxative use was defined as more than 30 doses of laxatives, stool softeners, or enemas taken over the most recent 1-month period. RESULTS: Residents with regular laxative use (n = 349) were compared with those who received no laxatives (n = 227). Factors significantly associated with regular laxative use at the P < 0.05 significance level were simultaneously included in a multiple logistic regression model. Factors associated with regular laxative use were immobility, Parkinson's disease, diabetes mellitus, and use of iron supplements, calcium channel blockers, and antidepressants with moderate to strong anticholinergic properties. CONCLUSION: Regular laxative use is often associated with neurologic dysfunction that directly or indirectly affects the gut, or medications known to depress colonic motility. Identification of potentially modifiable correlates of regular laxative use in older individuals may suggest management strategies to avoid or reduce laxative, stool softener, and enema requirements, improve constipation symptoms, and enhance quality of life for the frail elderly population.

Aged↗

Laxative prescribing in relation to opioid use and the influence of pharmacy-based intervention.

INTRODUCTION: Opioid-induced constipation is a common problem and can cause serious complications. It is widely advised that laxatives should be started concurrently with opiates, unless there is a clear indication not to do so. OBJECTIVE: This study was undertaken to estimate how often laxatives were started concurrently with opiates and to describe the effect of pharmacy-based interventions to promote the use of laxatives in patients starting opioids. METHODS: Twenty-six community pharmacies identified all patients who received a first prescription for a strong opioid during January and February of 1998, 1999 or 2000. Pharmacists collected information on patient, drug and prescriber characteristics (age, gender, use of opiates and laxatives). A separate questionnaire was used to collect data on pharmacy-based interventions to promote the simultaneous prescribing of laxatives with the opiates. RESULTS: Overall, 37% of the patients receiving an opioid started taking laxatives within 5 days. The percentage of patients who received laxatives simultaneously with opioids increased from 31% in 1998 to 35% in 1999 and 42% in 2000. In 117 (43%) of the opioid prescriptions, pharmacy-based intervention had taken place before the prescription date. Of these, 48.7% was accompanied by a laxative. Opioid prescriptions (n=152) without a pharmacy based intervention were accompanied in 27.6%. After adjustment for covariates (including time trends), pharmacy-based intervention increased the probability of concomitant laxative use 1.9 [95% CI 1.1-3.3] times. DISCUSSION: This study shows that the widely used guideline to start a laxative when prescribing an opioid is not always followed in daily practice. In addition, we showed that pharmacy-based intervention contributed to increasing laxative use in patients receiving opioids.

Aged↗

Detection and importance of laxative use in adolescents with anorexia nervosa.

OBJECTIVE: The frequency of laxative use in adolescents with anorexia nervosa is poorly described. This study of adolescents with anorexia nervosa examined self-report and biochemical screening methods for the detection of laxative use, the pattern of laxative use in this population over time, and the associated medical complications and psychopathology. METHOD: Forty-three consecutive patients with anorexia nervosa were studied. Initial assessment encompassed psychiatric history, medical examination, and administration of the Eating Disorders Examination, Child Behavior Checklist, and Youth Self-Report. Biochemical investigations, including random urinary laxative screening, were performed at assessment and follow-up. RESULTS: The frequency of laxative use from self-report alone was 12%; combined with urine screening it was 19%. The frequency of laxative use increased to 32% with prospective follow-up. Medical complications were associated with laxative use at follow-up. Laxative use was associated with longer duration of disease and with higher scores on the Eating Disorders Examination subscale Eating Concern. CONCLUSIONS: Laxative use is common among adolescents with anorexia nervosa, and the risk of associated medical complications increases over time. Biochemical screening will improve detection of laxative use. Longer duration of illness and greater Eating Concern scores are associated with increased risk of laxative use, and monitoring patients at increased risk is important.

Adolescent↗

Use of laxative medication in older persons and associations with low serum albumin.

OBJECTIVE: To study laxative use among older persons and the association of laxative intake with hypoalbuminemia. DESIGN: Cross-sectional study in a population-based cohort. SETTING: Community and institutions in the Iowa and Washington counties, Iowa site of the Established Populations for Epidemiologic Studies of the Elderly. PARTICIPANTS: Persons aged 71 years or older, who were interviewed at the 6th year of follow-up and for whom drug intake information was obtained (n = 2,529). MAIN OUTCOME MEASURES: Laxative medication use and prevalence of hypoalbuminemia. RESULTS: The prevalence rate of laxative use was 8.8% in the community and 74.6% in nursing homes. Increasing age was independently associated with laxative use (odds ratio [OR] = 1.66, 95% confidence interval [CI] = 1.33 to 2.07 for a 10-year increase), after adjusting for gender, institutionalization, disability in activities of daily living, body mass index, and use of the following drugs: furosemide, benzodiazepines, antidepressants, codeine, and calcium antagonists. Laxative use was independently associated with hypoalbuminemia (OR = 3.17, 95% CI = 1.42 to 7.08) after adjusting for age, gender, anemia, number of comorbid conditions, disability in activities of daily living, body mass index, use of furosemide, and institutionalization status. Compared with those who never used laxatives, those who took laxatives only at the 6th year of follow-up were at increased risk of hypoalbuminemia (OR = 2.65, 95% CI = 1.04 to 6.77), and those who used laxatives at both the 3rd and 6th years of follow-up were at greatest risk (OR = 4.02, 95% CI = 1.53 to 10.06). CONCLUSION: Laxatives are used by large numbers of older persons, and the investigation on unknown adverse effects is important. Prospective studies are needed to confirm the association of laxative use with hypoalbuminemia found in this study and to assess the mechanisms of this association.

Activities of Daily Living↗

Laxative abuse among women with eating disorders: an indication of psychopathology?

OBJECTIVE: The results of the scant research on laxative abuse among women with eating disorders suggest that laxative abuse is a diagnostic indicator of greater psychopathology. We further investigated the relationship of history of laxative abuse to eating and related attitudes, impulsivity, and personality pathology. METHOD: Women assessed in an outpatient clinical setting and diagnosed with anorexia nervosa, binge-eating/purging type (n = 51) or bulimia nervosa, purging type (n = 280) completed measures of laxative abuse, eating and related attitudes, and personality psychopathology at intake. RESULTS: More than one-half of both groups had abused laxatives at some point. History of laxative abuse was unrelated to eating disorder diagnostic category, current age or body weight, history of stealing, self-induced injury, having attempted suicide, interpersonal distrust, maturity fears, or compulsive or dependent personality features. Compared to nonabusers, laxative abusers demonstrated more perfectionism and avoidant personality features. Significant statistical interactions among variables revealed that bulimia nervosa patients who had abused laxatives exhibited the most pathological scores on scales measuring drive for thinness, body dissatisfaction, ineffectiveness, lack of interoceptive awareness, and passive-aggressive and borderline personality features. Anorexia nervosa patients who had abused laxatives had the highest scores on the histrionic scale. DISCUSSION: Results are discussed with regard to past research and clinical implications. We propose that laxative abuse among eating disordered women may serve different functions depending on diagnosis and underlying personality dynamics.

Adolescent↗

Laxative use in the community-dwelling elderly.

BACKGROUND: Constipation, a common and sometimes severe problem in the elderly, is often treated with laxatives. OBJECTIVE: The purpose of this study was to determine the prevalence of laxative use and identify determinants of such use among representative black and white community-dwelling elderly persons. METHODS: This was a cross-sectional survey of 4136 participants at baseline (1986-1987) in the Duke University Established Populations for Epidemiologic Studies of the Elderly. Data on demographic characteristics, health status, health service use, and use of prescription and over-the-counter drugs were collected in participants' homes. Use of the following types of laxatives was examined: bulking, hyperosmotic, lubricant, stimulant, stool softener, saline, and miscellaneous agents. RESULTS: It was found that 10.2% of participants used > or =1 laxative. Stimulants and bulking agents were the most commonly used classes. Only 11.6% of laxative users reported concurrent consumption of > or =2 laxatives. Multivariate logistic regression analyses indicated that laxative use was more likely in women (adjusted OR, 1.78; 95% CI, 1.34-2.37), those with >4 physicians visits in the previous year (adjusted OR, 1.72; 95% CI, 1.16-2.53), those unable to walk a half mile (adjusted OR, 1.44; 95% CI, 1.11-1.87), and those using > or =4 over-the-counter nonlaxative medications (adjusted OR, 2.09; 95% CI, 1.15-3.81). A nonsignificant association was seen between laxative use and the use of anticholinergic agents (adjusted OR, 1.38; 95% CI, 1.00-1.89). CONCLUSIONS: Laxative use is common among community-dwelling elderly persons and is related to specific factors concerning sociodemographics, health status, and access to health care. Studies are needed that examine the impact of laxative use on bowel function and quality of life in the elderly.

Aged↗

A blinded laxative taper for patients with eating disorders.

OBJECTIVE: To evaluate a blinded laxative taper, supervised entirely by pharmacists, in eating disorder patients with laxative dependency. METHODS: All subjects received a blinded laxative taper according to a set protocol, in addition to the usual treatment for their eating disorder. No specific treatment was given for laxative dependency other than the pharmacist's supervisions of the blinded taper. RESULTS: Ten patients were enrolled, of whom seven completed the study. Five of the seven patients (71%) decreased their laxative intake by at least 50%. Of these seven patients, three withdraw completely from laxative use. DISCUSSION: A standardized blinded laxative taper shows promise as a treatment option for laxative dependency in patients with eating disorders. The laxative taper may be less costly and more available than inpatient or psychologically based treatment because it can be given on an outpatient basis under the supervision of a pharmacist.

Adult↗

Randomized, clinical trial of bowel confinement vs. laxative use after primary repair of a third-degree obstetric anal sphincter tear.

PURPOSE: Third-degree tears are generally managed by primary anal sphincter repair. Postoperatively, some physicians recommend laxative use, whereas others favor bowel confinement after anorectal reconstructive surgery. This randomized trial was designed to compare a laxative regimen with a constipating regimen in early postoperative management after primary obstetric anal sphincter repair. METHODS: A total of 105 females were randomized after primary repair of a third-degree tear to receive lactulose (laxative group) or codeine phosphate (constipated group) for three days postoperatively. Patients were reviewed at three days and at three months postpartum. Recorded outcome measures were symptomatic and functional outcome and early postoperative morbidity. RESULTS: Forty-nine patients were randomly assigned to the constipated group and 56 patients to the laxative group. The first postoperative bowel motion occurred at a median of four (mean, 4.5 (range, 1-9)) days in the constipated group and at two (mean, 2.5 (range, 1-7)) days in the laxative group (P<0.001). Patients in the constipated group had a significantly more painful first evacuation compared with the laxative group (P<0.001). The mean duration of hospital stay was 3.7 (range, 2-6) days in the constipated group and 3.05 days in the laxative group (range, 2-5; P=0.001). Nine patients in the constipated group complained of troublesome postoperative constipation compared with three in the laxative group (P=0.033). Continence scores, anal manometry, and endoanal ultrasound findings were similar in the two groups at three months postpartum. CONCLUSIONS: Patients in the laxative group had a significantly earlier and less painful bowel motion and earlier postnatal discharge. There was no difference in the symptomatic or functional outcome of repair between the two regimens.

Adult↗