General geriatrics and gastroenterology: constipation and faecal incontinence

Nutritional Interventions in Adult Patients With Irritable Bowel Syndrome: An Umbrella Review of Systematic Reviews and Meta-analyses of Randomized Clinical Trials

CONTEXT

There is still debate regarding the effect of nutritional interventions in improving irritable bowel syndrome (IBS) symptoms.

OBJECTIVES

The aim was to examine the evidence certainty and validity of all existing meta-analyses of intervention trials on nutritional interventions in patients with IBS.

DATA SOURCES

Scopus, PubMed, and Web of Science were reviewed until June 2023.

DATA EXTRACTION

Meta-analyses assessing the impacts of nutritional interventions in adults with IBS were entered. Effect sizes of nutritional interventions were recalculated by applying a random-effects model. GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) was implemented to determine evidence certainty.

RESULTS

A total of 175 trials in 58 meta-analyses were entered describing the effects of 11 nutritional interventions on IBS-related outcomes. Nutritional interventions had beneficial effects on some IBS-related outcomes. For instance, soluble fiber, peppermint oil, and aloe vera improved IBS symptoms, and vitamin D3 and curcumin improved IBS symptom severity. Tongxieyaofang improved abdominal pain severity and stool frequency. Nevertheless, these outcomes have mainly shown small effects and low to very low evidence certainty. With regard to abdominal pain after probiotic supplementation (relative risk [RR]: 4.04; 95% confidence interval [CI]: 2.36, 6.92; GRADE = moderate) and IBS symptoms after a low-fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAP) diet (RR: 1.48; 95% CI: 1.14, 1.93; GRADE = moderate), there was evidence that probiotics and a low-FODMAP diet can confer clinical and favorable effects.

CONCLUSION

The current review does not support nutritional interventions for improving IBS symptoms. With regard to probiotics and a low-FODMAP diet, considering limitations like short-term study duration, there was an influential clinical impact.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO registration no. CRD42023429991.

Poor Sleep Quality as a Risk Factor for Constipation Among Community-Dwelling Older Adults in Japan

Background Older adults commonly experience both sleep disturbances and constipation. Pathophysiological mechanisms such as inhibition of colonic peristalsis due to sympathetic activation associated with sleep disturbances have been postulated. Here, we aimed to assess the temporal association between the degree of sleep quality and the incidence of constipation. Methods We conducted a prospective cohort study of independent community-dwelling older adults aged ≥75 years (the Sukagawa Study). Using a self-administered questionnaire inquiring about awareness of own constipation or the use of laxatives in 2019 and 2020, we determined the onset of constipation. The Japanese version of the Pittsburgh Sleep Quality Index (PSQI) was used to measure sleep quality in 2019. The global PSQI score was divided into quartiles. We analyzed the association between the degree of sleep quality and the incidence of constipation using logistic regression models. Results Overall, 1,696 participants without constipation at baseline were analyzed after 1 year, of whom 823 (48.5%) were male. The mean age of participants was 79.9 years. In total, 191 participants (11.3%) developed constipation. The median (interquartile range; IQR) global PSQI score was 4 (2, 6). According to the quartiles of the global PSQI scores (0-2, 3-4, 5-6, and ≥7), 35 (7.8%), 55 (11.3%), 48 (12.8%), and 53 (13.8%), respectively, developed constipation. Compared to those with global PSQI scores of 0-2, the odds ratios, adjusted by age, sex, smoking status, alcohol status, educational level, working status, exercise, and medical history were 1.57, 1.78, and 2.02 for participants with global PSQI scores of 3-4, 5-6, and ≥7, respectively (p = 0.003 for trend). Conclusions We identified poor sleep quality as a new risk factor for developing constipation in independent, community-dwelling, older adults aged ≥75 years.

Expert Consensus Document: Diagnosis for Chronic Constipation with Faecal Retention in the Rectum Using Ultrasonography

Chronic constipation is a common gastrointestinal disorder in older adults, and it is very important to manage chronic constipation. However, evaluating these subjective symptoms is extremely difficult in cases where patients are unable to express their symptoms because of a cognitive or physical impairment. Hence, it is necessary to observe the patient's colonic faecal retention using objective methods. Ultrasonography observation for colonic faecal retention is useful for diagnosing constipation and evaluating the effectiveness of treatment. Since there was no standard protocol for interpreting rectal ultrasonography findings, we developed an observation protocol through an expert consensus. We convened a group of experts in the diagnosis and evaluation of chronic constipation and ultrasonography to discuss and review the current literature on this matter. Together, they composed a succinct, evidence-based observation protocol for rectal faecal retention using ultrasonography. We created an observation protocol to enhance the quality and accuracy of diagnosis of chronic constipation, especially rectal constipation. This consensus statement is intended to serve as a guide for physicians, laboratory technicians and nurses who do not specialise in ultrasound or the diagnosis of chronic constipation.

Japanese Practice Guidelines for Fecal Incontinence Part 3 -Surgical Treatment for Fecal Incontinence, Fecal Incontinence in a Special Conditions- English Version

In Japan, the surgical treatment for fecal incontinence (FI) can be performed using minimally invasive surgery, such as anal sphincteroplasty and sacral neuromodulation (SNM), as well as antegrade continence enema (ACE), graciloplasty, and stoma construction. In addition, currently, several other procedures, including biomaterial injection therapy, artificial bowel sphincter (ABS), and magnetic anal sphincter (MAS), are unavailable in Japan but are performed in Western countries. The evidence level of surgical treatment for FI is generally low, except for novel procedures, such as SNM, which was covered by health insurance in Japan since 2014. Although the surgical treatment algorithm for FI has been chronologically modified, it should be sequentially selected, starting from the most minimally invasive procedure, as FI is a benign condition. Injuries to the neural system or spinal cord often cause disorders of the sensory and motor nerves that innervate the anus, rectum, and pelvic floor, leading to the difficulty in controlling bowel movement or FI and/or constipation. FI and constipation are closely associated; when one improves, the other tends to deteriorate. Patients with severe cognitive impairment may present with active soiling, referred to as "incontinence" episodes that occur as a consequence of abnormal behavior, and may also experience passive soiling.

Association between Drug Usage and Constipation in the Elderly Population of Greater Western Sydney Australia

The low socioeconomic region of Greater Western Sydney (GWS) has higher than average rates of gastrointestinal symptoms. The relationship between prescription drug usage and constipation has not been explored. The aim of this study was to investigate the impact of drug use on constipation in the elderly population of GWS (NSW, Australia). A random selection of elderly residents completed a postal questionnaire for constipation and drug use (response 30.7%). Bivariate associations between constipation and number of drug use and number of drug use with constipation adverse effect were compared. For multivariate analysis multiple logistic regression was performed for constipation with the number of drugs, use of drugs with known constipation side effects, and each drug class (Anatomical Therapeutic Chemical Classification System (ATC) level 4) as independent variables. The prevalence of constipation was 33.9%. There was a dose-response relationship between constipation and the number of drugs used (odds ratio 1.24, p < 0.001) and the usage of drugs with known constipation adverse effects (odds ratio 2.21, p = 0.009). These findings suggest that constipation is associated with the number of drugs used, particularly those with constipation adverse-effects, in the elderly of GWS.

Perspective on Physical Therapist Management of Functional Constipation

Functional constipation is a common bowel disorder leading to activity restrictions and reduced health-related quality of life. Typically, this condition is initially managed with prescription of laxatives or fiber supplementation, or both. However, these interventions are often ineffective and fail to address the underlying pathophysiology and impairments contributing to this condition. Physical therapists possess the knowledge and skills to diagnose and manage a wide range of musculoskeletal and motor coordination impairments that may contribute to functional constipation. Relevant anatomic, physiologic, and behavioral contributors to functional constipation are discussed with regard to specific constipation diagnoses. A framework for physical therapist examination of impairments that can affect gastrointestinal function, including postural, respiratory, musculoskeletal, neuromuscular, and behavioral impairments, is offered. Within the context of diagnosis-specific patient cases, multifaceted interventions are described as they relate to impairments underlying functional constipation type. The current state of evidence to support these interventions and patient recommendations is summarized. This perspective article aims not only to heighten physical therapists' awareness and management of this condition, but also to stimulate clinical questioning that will open avenues for future research to improve patient care.

Prevalence and factors associated with faecal impaction in the Spanish old population

Background

Faecal impaction (FI) is a common problem in old people living in nursing home. Its prevalence and associated factors remain unknown in the general population.

Aim

To evaluate FI prevalence in the Spanish population older than 65 years and to assess the factors associated with it.

Methods

A telephone survey was carried out of a Spanish population older than 65 years random sample (N = 1000). FI was assessed using a previously validated questionnaire.

Results

A total of 28,128 calls were made; 1,431 subjects were eligible and 1,000 subjects were enrollled, mean aged 74.6 ± 7.3 (65–97); 57.5% were women. At least 53 people reported FI within the past year (5.3% (CI 95%: 3.9–6.7%)). Only 0.03% met criteria for chronic constipation and faecal incontinence. FI-associated factors were constipation, female gender, reduced physical activity, and chronic renal failure (CRF).

Conclusion

FI is a prevalent problem in old Spanish population. Constipation and female gender are the main associated factors; low physical activity and CRF appear to play also a significant role. Further studies are required to confirm this association.

Fecal impaction: a systematic review of its medical complications

Background

Fecal impaction (FI) is a common problem in the elderly and other at-risk groups, such as patients with a neuro-psychiatric disease. It has been associated with medical problems and high morbi-mortality. A systematic review of this topic might be useful to improve the knowledge in this area and helpful to make an appropriate and early diagnosis.

Methods

A PubMed systematic search was performed using relevant keywords. Case reports published in English, Spanish or French till June 2014 were included if they had a diagnosis of FI and a medical complication secondary to it. Each case was classified based on its principal complication. The main objective is to create a classification of FI complications based on published clinical cases.

Results

188 articles met inclusion criteria, comprising 280 clinical cases. Out of the total, 43,5 % were over 65 years old, 49 % suffered from chronic constipation, 29 % had an underlying neuropsychiatric disease and 15 % were hospitalised or institutionalised. A total of 346 medical complications secondary to FI were collected. They were divided according to gastrointestinal tract involvement and then classified based on their anatomical and pathophysiological mechanism into three groups: Complications secondary to fecaloma effect on the intestinal wall (73.4 %), on the intestinal lumen (14 %) and on adjacent structures (12.6 %).

Conclusions

FI causes complications that might be fatal. The elderly, underlying neuropsychiatric disease and hospitalised or institutionalised patients integrate the high-risk group in which FI must be suspected. The first FI complications classification is presented to improve the knowledge about this entity.

The role of fiber supplementation in the treatment of irritable bowel syndrome: a systematic review and meta-analysis

Irritable bowel syndrome (IBS) is a functional bowel disorder associated with a wide variety of clinical symptoms. The use of fiber in treatment of IBS is well established, but recent reviews have shown conflicting evidence. The aim of our review was to study the effects of fiber (soluble and insoluble) on the symptoms of IBS. Medline, EMBASE, Cochrane Central, CINAHL, LILACS, and ClinicalTrials.gov were searched for appropriate studies. Two reviewers screened the title/abstract and full text against the inclusion criterion - that is, randomized control trials/crossover studies that compare fiber with placebo for its effect on IBS in an outpatient setting. Independent double data extraction was performed across multiple fields. An assessment of the risk of bias and tests for heterogeneity were carried out, along with a meta-analysis of the outcomes of interest. The search yielded 4199 unique records: 121 were selected after title/abstract screening and 22 after full screening. There was moderate clinical, methodological, and statistical heterogeneity across studies, with a moderate risk of bias. Overall, there was a significant improvement in global assessment of symptoms among those randomized to fiber [risk ratio: 1.27; 95% confidence interval (CI): 1.05-1.54]. Soluble fiber improved assessment of symptoms (risk ratio 1.49; 95% CI: 1.09-2.03), as well as the abdominal pain score (mean difference: -1.84; 95% CI: -2.72 to -0.97), with insoluble fiber not showing improvement in any outcome. Soluble fiber appears to improve symptoms of IBS, whereas there is no evidence for recommending insoluble fiber for IBS.

New onset of constipation during long-term physical inactivity: a proof-of-concept study on the immobility-induced bowel changes

BACKGROUND

The pathophysiological mechanisms underlining constipation are incompletely understood, but prolonged bed rest is commonly considered a relevant determinant.

AIMS

Our primary aim was to study the effect of long-term physical inactivity on determining a new onset of constipation. Secondary aim were the evaluation of changes in stool frequency, bowel function and symptoms induced by this prolonged physical inactivity.

METHODS

Ten healthy men underwent a 7-day run-in followed by 35-day study of experimentally-controlled bed rest. The study was sponsored by the Italian Space Agency. The onset of constipation was evaluated according to Rome III criteria for functional constipation. Abdominal bloating, flatulence, pain and urgency were assessed by a 100mm Visual Analog Scales and bowel function by adjectival scales (Bristol Stool Form Scale, ease of passage of stool and sense of incomplete evacuation). Daily measurements of bowel movements was summarized on a weekly score. Pre and post bed rest Quality of Life (SF-36), general health (Goldberg's General Health) and depression mood (Zung scale) questionnaires were administered.

RESULTS

New onset of functional constipation fulfilling Rome III criteria was found in 60% (6/10) of participants (p=0.03). The score of flatulence significantly increased whilst the stool frequency significantly decreased during the week-by-week comparisons period (repeated-measures ANOVA, p=0.02 and p=0.001, respectively). Stool consistency and bowel symptoms were not influenced by prolonged physical inactivity. In addition, no significant changes were observed in general health, in mood state and in quality of life at the end of bed rest.

CONCLUSIONS

Our results provide evidence that prolonged physical inactivity is relevant etiology in functional constipation in healthy individuals. The common clinical suggestion of early mobilization in bedridden patients is supported as well.

Urogenital consequences in ageing women

Various anatomical, physiological, genetic, lifestyle and reproductive factors interact throughout a woman's life span and contribute to pelvic floor disorders. Ageing affects pelvic floor anatomy and function, which can result in a variety of disorders, such as pelvic organ prolapse, lower urinary tract symptoms, dysfunctional bowel and bladder evacuation, and sexual dysfunction. The exact mechanisms and pathophysiological processes by which ageing affects pelvic floor and lower urinary and gastrointestinal tract anatomy and function are not always clear. In most cases, it is difficult to ascertain the exact role of ageing per se as an aetiological, predisposing or contributing factor. Other conditions associated with ageing that may co-exist, such as changes in mental status, can result in different types of pelvic floor dysfunction (e.g. functional incontinence). Pelvic organ dysfunction may be associated with significant morbidity and affect quality of life. These groups of patients often pose difficult diagnostic and therapeutic dilemmas owing to complex medical conditions and concurrent morbidities. In this chapter, we summarise the current evidence on the management of pelvic floor disorders, with emphasis on elderly women and the associations between the ageing process and these disorders. Clinicians with an understanding of the affect of ageing on the pelvic floor and lower urinary and gastrointestinal tract anatomy and function, and the complex interplay of other comorbidities, will be able to investigate, diagnose and treat appropriately there women. A holistic approach may result in substantial improvements in their quality of life.

Case-controlled study on risk factors for the development of constipation in hospitalized patients

Constipation is a common problem in hospitalized patients; however, the relative risks of its development with various factors have not been clarified. To clarify the risk factors associated with constipation, we performed a case-controlled study of 165 hospitalized patients who were not laxative users on admission. They were divided into case (n=35) and control (n=130) groups according to laxative administration during hospitalization. Comparison of the patient backgrounds in the two groups revealed significant differences in the activities of daily living, length of fasting, rest level on admission, cerebrovascular disease, and administration of hypnotics. Multiple logistic regression analysis using these five factors as autonomous variables showed that administration of hypnotics (odds ratio, 2.79; 95% confidence interval, 1.10-7.06; p=0.031) was significantly related to laxative use. Therefore, the administration of hypnotics may be the principal cause of constipation development in hospitalized patients and they should be used with caution.

Approach to fecal incontinence and constipation in older hospitalized patients

Although constipation and fecal incontinence are commonly encountered in older hospitalized patients, there is a paucity of clinical studies in this field. In this article we discuss the approach to and management of patients with these problems based on evidence and studies performed on patients in the ambulatory care setting, nursing home setting, and our experience. Our recommendations are applicable to older hospitalized patients. Successful management of these patients depends on identifying and treating underlying cause(s), such as infection, dietary factors, medication, or immobility-induced incontinence, constipation, or fecal impaction. For a hospitalized patient, a digital rectal examination should be performed to rule out fecal impaction and overflow incontinence. If there is no impaction but a weak anal sphincter, stool softeners or laxatives should be discontinued, as they cause diarrhea/fecal incontinence. In a patient with diarrhea/incontinence and suspected infection, management includes checking stool for Clostridium difficile toxin, E0157, ova and parasites, and culture. If the patient is on enteral nutrition, osmotic diarrhea-induced incontinence should be considered. Nursing care includes use of absorbent pads, special undergarments, anal hygiene, and skin care. Medications such as loperamide or diphenoxylate/atropine are useful for diarrhea with incontinence. Laxatives (eg, polyethylene glycol, lactulose), secretagogues (eg, lubiprostone), enemas, suppositories, and timed toileting assistance may be effective for constipation. Despite appropriate management, older hospitalized patients may remain incontinent because of dementia, immobility, or comorbid issues. Treatment should be tailored to the underlying mechanism(s) and needs of each patient.

Pharmacologic consideration of commonly used gastrointestinal drugs in the elderly

Gastrointestinal (GI) manifestations in older adults can be caused or alleviated by drug therapy. GI medications, such as proton pump inhibitors and histamine-2 receptor antagonists, are among the most commonly used medications in long-term care facilities in the United States. This article reviews the alterations in pharmacokinetic disposition of medications that occur with aging and highlights the pharmacology of commonly used GI drugs. Selected GI conditions that are drug induced and preventable are identified, and recommendations for GI drugs to be avoided in older adults are provided.

Fecal incontinence in the elderly

Fecal incontinence affects up to 20% of community-dwelling adults and more than 50% of nursing home residents, and is one of the major risk factors for elderly persons in the nursing home. Institutionalization itself is a risk factor (eg, immobility due to physical restraints). Management should focus on identifying and treating underlying causes, such as diet- or medication induced diarrhea, constipation, and fecal impaction. Use of absorbent pads and special undergarments is useful. Anorectal physiologic testing of nursing home residents has revealed an association between constipation, stool retention, and fecal incontinence. Impaired sphincter function (risk factor for fecal incontinence), decreased rectal sensation, and sphincter dyssynergia (risk factor for constipation and impaction) are found in a high proportion of incontinent nursing home residents. Biofeedback and sacral nerve stimulation may be useful in refractory patients and should be considered before colostomy in community-dwelling adults. Despite appropriate management, nursing home residents may remain incontinent because of dementia and health or restraint related immobility.

A gap in our understanding: chronic constipation and its comorbid conditions

Constipation is one of the most common digestive disorders in the United States; however, the association of this condition with related comorbidities, both gastrointestinal and extraintestinal, is poorly documented. Here, we have reviewed the association of constipation with specific comorbidities. The data suggest that there are considerable clinical consequences associated with constipation. Ultimately, realization of the disease risks associated with chronic constipation may provide the impetus needed to direct new research, and shift attention on the part of patients and practitioners to methods for preventing significant and potentially costly comorbid medical problems.

Six-year follow-up and predictors of urgency-associated urinary incontinence and bowel symptoms among the oldest old: a population-based study

Urinary urgency with incontinence, and fecal incontinence and constipation were followed up over a 6-year period in 398 subjects aged 70 years and over at baseline. Age- and gender-adjusted and multivariate Cox proportional hazard models were used to examine the associations of urinary urgency and fecal incontinence and constipation with mortality, and logistic regression models to determine predictors of incident symptoms among the survivors. The proportion of incident cases of urinary urgency with incontinence, fecal incontinence and constipation in the 252 survivors were 17% (n=46), 9% (n=34) and 13% (n=36), respectively. Frequently reported urinary urgency (hazard ratio, HR=2.23; 95% confidence interval, CI=1.37-3.61) and frequently reported fecal incontinence (HR=4.99; CI=2.11-11.79) were associated with mortality when adjusted for age and gender only. In the multivariate analyses, comorbidity (odds ratio, OR=5.54; CI=2.03-15.14), depressive mood (OR=5.78; CI=1.35-24.79) and instrumental activities of daily living (IADL) disability (OR=4.18, CI=1.52-11.50) predicted incident urgency urinary incontinence. Comorbidity (OR=2.91; CI=1.09-7.77) predicted incident fecal incontinence, while no significant predictors were identified for the incident symptom of constipation. Comorbidities and disabilities explain the association of severe urinary and fecal incontinence with mortality.

Urinary and fecal incontinence in nursing home residents

Urinary and fecal incontinence are comorbid conditions affecting over 50% of nursing home residents. Management should focus on identifying and treating underlying causes. Despite appropriate management, residents may remain incontinent because of dementia and health- or restraint-related immobility. This article reviews the results of studies that have documented how prompted voiding programs can significantly reduce urinary and fecal incontinence, particularly if the intervention includes dietary and exercise components. Documentation of noninvasive and efficacious interventions by randomized, controlled trials and the labor costs of implementing these measures can lead to changes in how nursing home care is provided and funded.

Fibre supplementation in addition to loperamide for faecal incontinence in adults: a randomized trial

BACKGROUND AND AIMS

Many patients with faecal incontinence (FI) are prescribed a constipating agent concurrently with either fibre supplementation or a low-residue diet. Clinician opinion varies as to which initial approach is best. This study compared these treatments in routine clinical practice.

DESIGN

Double-blind randomized cross-over trial.

PARTICIPANTS

Patients referred for FI.

INTERVENTION

Six weeks of low-residue diet, placebo fibre supplement and loperamide followed by 6 weeks of fibre supplement, neutral diet and loperamide or the reverse order.

RESULTS

Sixty-three patients were randomized. At baseline the mean Faecal Incontinence Severity Index (FISI) was 31. After low-residue diet, placebo fibre supplement and loperamide the FISI was 18.4 (standard deviation, SD 13.2). After fibre supplementation and loperamide the FISI was 18.8 (SD 14.1). The mean difference between the treatment arms was not significant (-0.8; 95% CI: -4.9 to 3.3). There was also no difference between the treatments for the SF-36 and the Faecal Incontinence Quality of Life scale. There was marked variability in individual responses, some favouring more fibre and some less.

CONCLUSIONS

This study provides evidence that treatment with more or less fibre in addition to loperamide has similar clinical effectiveness overall, however individual tailoring of treatment seems important to achieve the best outcome.

Epidemiology of slow and fast colonic transit using a scale of stool form in a community

BACKGROUND

Measurement of gastrointestinal transit is commonly performed in the clinic, but data on transit in the community are lacking.

AIM

To estimate the prevalence of slow and fast colonic transit using stool form, and potential risk factors.

METHODS

A validated self-reported gastrointestinal symptom questionnaire was mailed to 4196 randomly selected members of the community (response rate 54%). One question asked the subject to self-report their stool form using the Bristol Stool Scale.

RESULTS

Overall, 18%, 9% and 73% met stool form criteria for slow, fast or normal colonic transit, respectively. Increased odds for slow transit were observed with a higher Somatic Symptom Checklist score (OR = 1.6; 1.3-2.0), while a decreased odds for slow transit was observed in males relative to females (OR = 0.6; 0.5-0.8). An increased odds for fast transit was observed with higher Somatic Symptom Checklist score (OR = 2.3; 1.7-2.9) and a history of cholecystectomy (OR = 1.8; 1.2-2.8). Increasing body mass index (per 5 units) was associated with decreased odds for slow (OR = 0.85; 0.78-0.93), and an increased odds for fast (OR = 1.1; 1.04-1.24) colonic transit.

CONCLUSION

Based on stool form assessment, nearly one in five community members may have slow colonic transit and one in 12 have accelerated colonic transit.

Serotonin and neuroprotection in functional bowel disorders

The 5-HT(4) partial agonist tegaserod is effective in the treatment of chronic constipation and constipation predominant irritable bowel syndrome. 5-HT(4) receptors are located on presynaptic terminals in the enteric nervous system. Stimulation of 5-HT(4) receptors enhances the release of acetylcholine and calcitonin gene related peptide from stimulated nerve terminals. This action strengthens neurotransmission in prokinetic pathways, enhancing gastrointestinal motility. The knockout of 5-HT(4) receptors in mice not only slows gastrointestinal activity but also, after 1 month of age, increases the age-related loss of enteric neurons and decreases the size of neurons that survive. 5-HT(4) receptor agonists, tegaserod and RS67506, increase numbers of enteric neurons developing from precursor cells and/or surviving in culture; they also increase neurite outgrowth and decrease apoptosis. The 5-HT(4) receptor antagonist, GR113808, blocks all of these effects, which are thus specific and 5-HT(4)-mediated. 5-HT(4) receptor agonists, therefore, are neuroprotective and neurotrophic for enteric neurons. Because the age-related decline in numbers of enteric neurons may contribute to the dysmotilities of the elderly, the possibility that the neuroprotective actions of 5-HT agonists can be utilized to prevent the occurrence or worsening of these conditions should be investigated.

Serotonin and neuroprotection in functional bowel disorders

The 5-HT(4) partial agonist tegaserod is effective in the treatment of chronic constipation and constipation predominant irritable bowel syndrome. 5-HT(4) receptors are located on presynaptic terminals in the enteric nervous system. Stimulation of 5-HT(4) receptors enhances the release of acetylcholine and calcitonin gene related peptide from stimulated nerve terminals. This action strengthens neurotransmission in prokinetic pathways, enhancing gastrointestinal motility. The knockout of 5-HT(4) receptors in mice not only slows gastrointestinal activity but also, after 1 month of age, increases the age-related loss of enteric neurons and decreases the size of neurons that survive. 5-HT(4) receptor agonists, tegaserod and RS67506, increase numbers of enteric neurons developing from precursor cells and/or surviving in culture; they also increase neurite outgrowth and decrease apoptosis. The 5-HT(4) receptor antagonist, GR113808, blocks all of these effects, which are thus specific and 5-HT(4)-mediated. 5-HT(4) receptor agonists, therefore, are neuroprotective and neurotrophic for enteric neurons. Because the age-related decline in numbers of enteric neurons may contribute to the dysmotilities of the elderly, the possibility that the neuroprotective actions of 5-HT agonists can be utilized to prevent the occurrence or worsening of these conditions should be investigated.

Apoptotic phenomena are not a major cause of enteric neuronal loss in constipated patients with dementia

Chronic constipation is a frequent symptom in patients with dementia, especially in those institutionalized. However, few data are available on the neuropathological aspects of the colon in such patients. We investigated the enteric neuropathology of the colon in two patients with longstanding dementia and intractable constipation, requiring surgery to alleviate symptoms. The results were compared to those obtained in 10 controls. No abnormalities were found at conventional histological examination, except for the presence of melanosis coli. Immunohistochemical evaluation revealed no important difference between patients and controls, except for a decreased number of enteric neurons in patients. However, this neuronal decrease was not associated to apoptotic phenomena, as observed in patients with severe idiopathic constipation. We concluded that in severely constipated patients with dementia the neuropathological abnormalities might be reconducted to a physiological neuronal decrease as a result of aging, and that the pathophysiological aspects of constipation in these subjects differ from those found in idiopathic constipation.

Evaluation of pharmacotherapy in geriatric patients after performing complete geriatric assessment at a diagnostic day clinic

BACKGROUND

Elderly patients often take multiple drugs. It is known that polypharmacy, i.e. use of five or more drugs, may lead to drug interactions and adverse events. However, undertreatment of conditions or illnesses is also a concern in geriatric patients. A centralised review of both diagnoses and medication may play a key role in optimising pharmacotherapy in geriatric patients. The aims of this study were to evaluate the quality and appropriateness of medication after performing a complete geriatric assessment (CGA) and medication review at a diagnostic geriatric day clinic, to investigate reasons for drug changes, and to determine whether medication review leads to a reduction in the number of drugs used.

METHODS

A chart review was performed in 702 patients (mean age 82.0 years, range 57.1-104.1 years) who underwent a CGA at a diagnostic geriatric day clinic. Medication at admission, changes in medication and reasons for changes were noted.

RESULTS

Vitamins, for example folic acid and vitamin B(12) (cyanocobalamin), and trimethoprim for urinary tract infections were the most frequently started medications after CGA and medication review. The number of drugs used was reduced in only a minority of patients (11.7%); reasons for discontinuation were a diagnosis that was no longer relevant (38.8%), adverse events (33.2%) and identification of better pharmacotherapeutic options (22.0%). In 69.2% of the cases a new diagnosis was the reason for starting a new medication, followed by osteoporosis prophylaxis (15.0%) and improvement in pharmacotherapy (10.6%). At admission, patients were taking a mean number of 4.6 drugs (range 0-17). A mean of 0.8 drugs (range from reduction of 5 to addition of 7) had been added per patient, resulting in a mean number of 5.4 (range 0-18) prescribed drugs at discharge.

CONCLUSION

Evaluation of medication in patients after performing CGA at the geriatric day clinic investigated resulted in relevant medication changes. The main reason for prescribing new drugs was a new diagnosis. Absence of a relevant medical indication was the main reason for stopping drugs. CGA and medication review resulted in a mean net addition of 0.8 drugs per patient.

Constipation in older patients: effects on quality of life

Constipation, often related to diet, physical immobility, concurrent illness or multiple medication use, is common in older people. Despite potential for serious complications, constipation may often be overlooked. Management of constipation is a critical part of the care of older patients with chronic conditions. Risk assessment and appropriate nursing interventions and/or medication should mean that constipation can be minimized, preventing additional medication burden and reducing the risk of non-adherence. The relationship between quality of life and constipation has been assessed in numerous studies, showing that patients with constipation generally have an impaired quality of life compared with the general population, although studies in older patients are limited. In long-term survivors of colorectal or anal carcinoma, constipation is one of the factors that has the most negative impact on quality of life. Strategies for prevention and minimization of constipation have the potential to substantially improve quality of life for older people.

Diet Strategies Used by Women to Manage Fecal Incontinence

Fecal incontinence occurs in community-living women who are elderly, as well as younger women, particularly after vaginal childbirth. Little is known about how women manage fecal incontinence in their everyday lives. Ten women who had fecal incontinence for at least 1 year participated in an audio-taped interview in a phenomenological study. Diet modification was identified as a key strategy for managing fecal incontinence. Various food types were avoided, restricted, or used as remedies. The meanings that the women applied to the diet strategies for managing fecal incontinence had 4 themes: restricting diet and eating patterns, eating and dealing with the consequences, treating fecal incontinence with foods and fluids, and lacking therapeutic guidance regarding diet modifications for fecal incontinence. The results of this study suggest that the continence nurse specialist recognize the important role and meaning of diet as a self-care strategy for women with fecal incontinence and address diet in their assessment and management recommendations.

Urinary and fecal incontinence in nursing homes

Urinary and fecal incontinence affect 50% or more of nursing home residents and frequently occur together because immobility and dementia are primary risk factors for both conditions. Many residents (40%-60%) show immediate improvement when provided with consistent toileting assistance, which compensates for the immobility and dementia risk factors that prevent them from toileting independently. Residents who are responsive to assistance can be identified with a 2-day run-in trial during which prompts are provided every 2 hours to encourage toileting. This run-in trial also provides an opportunity to use protocols to identify and treat other reversible causes of incontinence (e.g., urinary tract infection, fecal impaction) and to diagnose problems with bladder or anorectal functioning. The effects of toileting assistance on the frequency of fecal incontinence, while significant, are less dramatic than those reported for urinary incontinence, primarily because of constipation. Fortunately, noninvasive interventions have been identified that address most of the risk factors common to both constipation and fecal incontinence. Trials are needed to evaluate treatments that integrate noninvasive interventions directed toward the use of laxatives or constipating agents, low toileting frequency, low food and fluid intake, and physical activity to improve constipation and fecal incontinence in nursing home residents. The scientific documentation of the efficacy of such a noninvasive intervention and the labor costs of implementing these measures can lead to major changes in how nursing home care is funded and provided.

New OTC drugs and devices 2002: a selective review

OBJECTIVES

To create a heightened awareness of two consumer issues confronting pharmacists in the self-care arena--consumers' need for accurate information about over-the-counter (OTC) products and consumers' attitudes and beliefs about OTC drugs--and to educate pharmacists about newly introduced nonprescription products, home screening devices, and home accessories.

DATA SOURCES

Recently published clinical and pharmaceutical industry literature and survey results from the National Council on Patient Information and Education.

DATA SYNTHESIS

Although changes have been made to labeling for OTC products to heighten consumers' awareness of the dangers associated with misuse of these products, consumers need the expertise of the pharmacist to guide them toward effective and safe self-care. It remains critical that pharmacists be knowledgeable about the numerous nonprescription products that become available on the U.S. market each year and take the initiative to counsel patients appropriately on the benefits and risks associated with their use.

CONCLUSION

Patients will continue to place an increasing emphasis on self-care. To assist them, pharmacists must remain up-to-date on trends and have an understanding of the nuances of consumers' behavior and thinking in relation to OTC products and their use. The new nonprescription medications and diagnostic screening devices discussed in this review article represent valuable additions to the growing array of self-care products.