Carole Parsons

Withholding, discontinuing and withdrawing medications in dementia patients at the end of life: a neglected problem in the disadvantaged dying?

Recent years have seen a growing recognition that dementia is a terminal illness and that patients with advanced dementia nearing the end of life do not currently receive adequate palliative care. However, research into palliative care for these patients has thus far been limited. Furthermore, there has been little discussion in the literature regarding medication use in patients with advanced dementia who are nearing the end of life, and discontinuation of medication has not been well studied despite its potential to reduce the burden on the patient and to improve quality of life. There is limited, and sometimes contradictory, evidence available in the literature to guide evidence-based discontinuation of drugs such as acetylcholinesterase inhibitors, antipsychotic agents, HMG-CoA reductase inhibitors (statins), antibacterials, antihypertensives, antihyperglycaemic drugs and anticoagulants. Furthermore, end-of-life care of patients with advanced dementia may be complicated by difficulties in accurately estimating life expectancy, ethical considerations regarding withholding or withdrawing treatment, and the wishes of the patient and/or their family. Significant research must be undertaken in the area of medication discontinuation in patients with advanced dementia nearing the end of life to determine how physicians currently decide whether medications should be discontinued, and also to develop the evidence base and provide guidance on systematic medication discontinuation.

Potentially inappropriate prescribing in older people with dementia in care homes: a retrospective analysis.

AbstractBackground: Older people in general and care home residents in particular are at high risk of suboptimal or inappropriate prescribing. To date, research into potentially inappropriate prescribing (PIP) has not focused on care home residents and/or has not utilized the recently developed and validated Screening Tool of Older Persons’ potentially inappropriate Prescriptions (STOPP) criteria. Objective: The aim of this study was to estimate the prevalence of PIP in older people with dementia living in six residential care homes in England, using the STOPP criteria. Methods: A retrospective analysis was conducted using medication data collected for older people with dementia in six residential care homes in England who participated in the prospective, longitudinal EVIDEM — End of Life (EoL) study. Of the 133 residents recruited to the study, medication administration records were available for and reviewed at two timepoints (approximately 16 weeks apart) for 119 residents and 110 residents, respectively. The prevalence of PIP at these timepoints was determined using 31 of the 65 STOPP criteria applicable when there is no access to residents’ medical records. Results: At the first timepoint, 68 potentially inappropriate medications (PIMs) were identified. Fifty-five residents (46.2%) were prescribed one or more PIM(s), eleven (9.2%) were prescribed two or more PIMs and two (1.7%) were prescribed three PIMs. Thirteen of the 31 STOPP criteria utilized in this study (41.9%) were used to identify PIP. Long-term (i.e. >1 month) neuroleptics (antipsychotics) were the most frequently prescribed PIMs (n = 25; 21.0%), followed by non-steroidal anti-inflammatory drugs (NSAIDs) for >3 months, proton pump inhibitors (PPIs) at maximum therapeutic dosage for >8 weeks, tricyclic antidepressants (TCAs) in patients with dementia and long-term (i.e. >1 month), long-acting benzodiazepines.At the second timepoint, 57 PIMs were identified; 45 residents (40.9%) were prescribed one or more PIM(s) and 10 (9.1%) were prescribed two or more PIMs, but only one resident (0.9%) was prescribed three PIMs. Of the 31 STOPP criteria utilized in this study, ten (32.3%) were used to identify PIP. Long-term (i.e. >1 month) antipsychotics were again the most frequently prescribed PIMs (n = 21; 19.1%), followed by PPIs at maximum therapeutic dosage for >8 weeks, NSAIDS for >3 months and TCAs in patients with dementia.A significant correlation was found at both timepoints between the number of medicines prescribed and occurrence of PIP. Conclusions: This study found that over two-fifths of older people with dementia residing in six residential care homes in England were prescribed at least one PIM at each timepoint. Long-term (i.e. >1 month) antipsychotics, NSAID use for >3 months and PPI use at maximum therapeutic dosage for >8 weeks were the most prevalent PIMs. Regular medication review that targets, but is not limited to, these medications is required to reduce PIP in the residential care home setting. The STOPP criteria represent a useful tool to facilitate such review in this patient population.

Anti-infective photodynamic biomaterials for the prevention of intraocular lens-associated infectious endophthalmitis

Bacterial attachment onto intraocular lenses (IOLs) during cataract extraction and IOL implantation is a prominent aetiological factor in the pathogenesis of infectious endophthalmitis. Photodynamic therapy (PDT) and photodynamic antimicrobial chemotherapy (PACT) have shown that photosensitizers are effective treatments for cancer, and in the photoinactivation of bacteria, viruses, fungi and parasites, in the presence of light. To date, no method of localizing the photocytotoxic effect of a photosensitizer at a biomaterial surface has been demonstrated. Here we show a method for concentrating this effect at a material surface to prevent bacterial colonization by attaching a porphyrin photosensitizer at, or near to, that surface, and demonstrate the principle using IOL biomaterials. Anionic hydrogel copolymers were shown to permanently bind a cationic porphyrin through electrostatic interactions as a thin surface layer. The mechanical and thermal properties of the materials showed that the porphyrin acts as a surface cross-linking agent, and renders surfaces more hydrophilic. Importantly, Staphylococcus epidermidis adherence was reduced by up to 99.02+/-0.42% relative to the control in intense light conditions and 91.76+/-5.99% in the dark. The ability to concentrate the photocytotoxic effect at a surface, together with a significant dark effect, provides a platform for a range of light-activated anti-infective biomaterial technologies.

An exploration of nursing home managers' knowledge of and attitudes towards the management of pain in residents with dementia

The aims of this study were to explore the knowledge, attitudes and beliefs that nursing home managers hold with regard to the assessment and management of pain in residents with dementia and to determine how these may be affected by the demographic characteristics of the respondents.

‘It's showed me the skills that he has’: pharmacists' and mentors' views on pharmacist supplementary prescribing

Objectives Supplementary prescribing has seen pharmacists assume greater responsibility for prescribing in collaboration with doctors. This study explored the context and experiences, in relation to the practice of supplementary prescribing, of pharmacists and physicians (who acted as their training mentors) at least 12 months after pharmacists had qualified as supplementary prescribers.

Cholinesterase inhibitor and memantine use in newly admitted nursing home residents with dementia.

OBJECTIVES: To quantify the use of cholinesterase inhibitors (ChEIs) and memantine in nursing home (NH) residents with dementia upon NH admission and 3 months later and to examine factors associated with reduction in therapy.

Non-steroidal anti-inflammatory drugs for the treatment of cancer cachexia: A systematic review

Background: Cancer cachexia is a devastating syndrome of advanced malignancy which negatively impacts on patients’ morbidity, mortality and quality of life. Chronic inflammation is a key characteristic of cancer cachexia. Therefore, non-steroidal anti-inflammatory drugs (NSAIDs) may be able to break the cycle of cachexia. Aim: To systematically review the literature on the use of NSAIDs for the treatment of cachexia in advanced cancer patients. Design: All titles retrieved through searching were downloaded to a reference management database, duplicates were removed and the remaining citations were checked for eligibility. Full copies of all eligible articles were obtained and reviewed. Data sources: Electronic searches (from inception up to 09/2011) included CINAHL, MEDLINE, EMBASE, and Web of Science. Reference lists from reviewed articles, trial registers and abstracts from relevant conferences were searched. Eligibility criteria were (a) Randomised Controlled Trial; (b) participants were adults with cancer with weight loss or a clinical diagnosis of cachexia; (c) administration of oral NSAIDs. Results: Four studies were included. These studies provided some evidence of positive therapeutic effect on quality of life, performance status, inflammatory markers, weight gain and survival, but there was insufficient evidence demonstrated for their widespread use in practice. Conclusions: Insufficient studies have been performed to allow a conclusion to be formed with regard to the effectiveness of NSAIDs in the treatment of cachexia in advanced cancer. Major challenges in this patient cohort include the lack of uniformity of inclusion criteria across studies and the frailty of the patients recruited.

Prescribing for older people in nursing homes: a review of the key issues.

Prescribing of medication is one of the most common interventions that residents in nursing homes will experience. There is little doubt that medication has greatly contributed to improvements in symptom control, long-term management of medical conditions and greater longevity. However, the quality of prescribing has also been criticised and this paper outlines the issues that have proved to be most problematic and have been repeatedly highlighted in the literature. There have been numerous reports of over-use of inappropriate medicines for which there is no clinical indication or for which there is little evidence of effectiveness, and under-use of medicines that would be indicated for residents with certain medical conditions. Residents may also suffer from adverse drug events and enforced or erratic compliance. Some of these problems may arise because of the difficulties encountered by staff or a breakdown in communication when residents move from one setting to another (e.g. hospital to nursing home or vice versa).

Using debate to teach pharmacy students about ethical issues.

Objective. To create, implement, and evaluate debate as a method of teaching pharmacy undergraduate students about ethical issues. Design. Debate workshops with 5 hours of contact with student peers and facilitators and 5 hours of self-study were developed for second-year pharmacy students. Student development of various skills and understanding of the topic were assessed by staff members and student peers. Assessment. One hundred fifty students completed the workshops. The mean score for debating was 25.9 out of 30, with scores ranging from 23.2 to 28.7. Seventy percent of students agreed that the debates were a useful teaching method in the degree program. Conclusion. A series of workshops using debates effectively delivered course content on ethical issues and resulted in pharmacy students developing skills such as teamwork, peer assessment, communication, and critical evaluation. These findings suggest that pharmacy students respond favorably to a program using debates as a teaching tool.

Antimicrobial prescribing in Nursing Homes in Northern Ireland: Results of Two Point-Prevalence Surveys

AbstractBackground: In 2005, the European Commission recommended that all member states should establish or strengthen surveillance systems for monitoring the use of antimicrobial agents. There is no evidence in the literature of any surveillance studies having been specifically conducted in nursing homes (NHs) in Northern Ireland (NI). Objective: The aim of this study was to determine the prevalence of antimicrobial prescribing and its relationship with certain factors (e.g. indwelling urinary catheterization, urinary incontinence, disorientation, etc.) in NH residents in NI. Methods: This project was carried out in NI as part of a wider European study under the protocols of the European Surveillance of Antimicrobial Consumption group. Two point-prevalence surveys (PPSs) were conducted in 30 NHs in April and November 2009. Data were obtained from nursing notes, medication administration records and staff in relation to antimicrobial prescribing, facility and resident characteristics and were analysed descriptively. Results: The point prevalence of antimicrobial prescribing was 13.2% in April 2009 and 10.7% in November 2009, with a 10-fold difference existing between the NHs with the highest and lowest antimicrobial prescribing prevalence during both PPSs. The same NH had the highest rate of antimicrobial prescribing during both April (30.6%) and November (26.0%). The group of antimicrobials most commonly prescribed was the penicillins (April 28.6%, November 27.5%) whilst the most prevalent individual antimicrobial prescribed was trimethoprim (April 21.3%, November 24.3%). The majority of antimicrobials were prescribed for the purpose of preventing urinary tract infections (UTIs) in both April (37.8%) and in November (46.7%), with 5% of all participating residents being prescribed an antimicrobial for this reason. Some (20%) antimicrobials were prescribed at inappropriate doses, particularly those which were used for the purpose of preventing UTIs. Indwelling urinary catheterization and wounds were significant risk factors for antimicrobial use in April [odds ratio {OR} (95% CI) 2.0 (1.1, 3.5) and 1.8 (1.1, 3.0), respectively] but not in November 2009 [OR (95% CI) 1.6 (0.8, 3.2) and 1.2 (0.7, 2.2), respectively]. Other resident factors, e.g. disorientation, immobility and incontinence, were not associated with antimicrobial use. Furthermore, none of the NH characteristics investigated (e.g. number of beds, hospitalization episodes, number of general practitioners, etc.) were found to be associated with antimicrobial use in either April or November 2009. Conclusions: This study has identified a high overall rate of antimicrobial use in NHs in NI, with variability evident both within and between homes. More research is needed to understand which factors influence antimicrobial use and to determine the appropriateness of antimicrobial prescribing in this population in general and more specifically in the management of recurrent UTIs.