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"Fader, Mandy"
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Novel Insights into the Proteus mirabilis Crystalline Biofilm Using Real-Time Imaging
2015
The long-term use of indwelling catheters results in a high risk from urinary tract infections (UTI) and blockage. Blockages often occur from crystalline deposits, formed as the pH rises due to the action of urease-producing bacteria; the most commonly found species being Proteus mirabilis. These crystalline biofilms have been found to develop on all catheter materials with P. mirabilis attaching to all surfaces and forming encrustations. Previous studies have mainly relied on electron microscopy to describe this process but there remains a lack of understanding into the stages of biofilm formation. Using an advanced light microscopy technique, episcopic differential interference contrast (EDIC) microscopy combined with epifluorescence (EF), we describe a non-destructive, non-contact, real-time imaging method used to track all stages of biofilm development from initial single cell attachment to complex crystalline biofilm formation. Using a simple six-well plate system, attachment of P. mirabilis (in artificial urine) to sections of silicone and hydrogel latex catheters was tracked over time (up to 24 days). Using EDIC and EF we show how initial attachment occurred in less than 1 h following exposure to P. mirabilis. This was rapidly followed by an accumulation of an additional material (indicated to be carbohydrate based using lectin staining) and the presence of highly elongated, motile cells. After 24 h exposure, a layer developed above this conditioning film and within 4 days the entire surface (of both catheter materials) was covered with diffuse crystalline deposits with defined crystals embedded. Using three-dimensional image reconstruction software, cells of P. mirabilis were seen covering the crystal surfaces. EDIC microscopy could resolve these four components of the complex crystalline biofilm and the close relationship between P. mirabilis and the crystals. This real-time imaging technique permits study of this complex biofilm development with no risk of artefacts due to sample manipulation. A full understanding of the stages and components involved in crystalline encrustation formation will aid in the development of new protocols to manage and ultimately prevent catheter blockage.
Journal Article
Experiences and impact of living with incontinence associated stigma: A protocol for a systematic review and narrative synthesis of qualitative studies
by
Avery, Miriam
,
Macaulay, Margaret
,
Fader, Mandy
in
Biology and Life Sciences
,
Complications and side effects
,
Dementia
2022
Incontinence is global health and social issue, with urinary incontinence alone affecting over 400 million people. Incontinence can lead to physical harms such as skin damage, but it also commonly causes social and psychological harms, including those associated with stigma. For many people, treatment to cure incontinence does not work or is not suitable and they live with the long-term consequences of incontinence. At the moment, no stigma reduction interventions (increasingly used with other conditions such as mental health problems and HIV) have been developed for people living with incontinence. As a starting point for developing such an intervention, this review will address the questions 1) What are the incontinence (urinary or faecal) associated experiences of stigma of people living with incontinence? 2) What is the impact of incontinence associated stigma on their lives? The reviewers will search Embase, Medline, PsychINFO and the Cumulative Index to Nursing and Allied Health Literature using controlled vocabulary and relevant search terms. Articles assessed to meet inclusion criteria will be included. Once duplicates have been removed, titles and abstracts will be screened and full texts of selected research articles will be reviewed. An adapted Joanna Briggs Institute Data Extraction Form will be used to collect the data and quality will be assessed using the Joanna Briggs Institute checklist for qualitative research appraisal tool. A framework approach (using the Revised Framework for Understanding Non-communicable Disease Related Stigma) will be used to organise, integrate, interpret and summarise findings from included articles. The review will be reported in accordance with the Enhancing Transparency in reporting the synthesis of qualitative research statement. Prospero registration number CRD42021259065. The systematic review described in this protocol will provide the first in-depth, comprehensive understanding of people's experiences of the stigma associated with incontinence and the impact that it has on their lives. It will identify broader influences of contextual variables such as age, sex, cause and type of incontinence, socio-economic culture and geographical location. The review aims to provide insights to support the development of incontinence associated stigma reduction interventions.
Journal Article
A qualitative study of continence service provision for people living with dementia at home in the UK: Still inadequate?
2022
Incontinence is a major problem for people with dementia (PWD) and their family/friend caregivers, often causing substantial harm, including residential care admission. The incontinence needs of PWD are complex and different from those of people without dementia. The aim of this study was to investigate carer and nurse perceptions of continence service provision and potential improvements.
A secondary analysis of qualitative data was undertaken. Semi-structured interviews (n = 45) were undertaken with PWD, family caregivers and healthcare professionals (continence or dementia nurses) in the UK. PWD and caregivers were recruited via www.joindementiaresearch.nihr.ac.uk and via dementia/carer groups. Nurses were recruited via their employers. Framework analysis was used. The COREQ Research guideline statement assists reporting.
Four themes were found. Firstly, there was a lack of awareness of the service and waiting time. Many caregivers were unaware of continence services and dementia nurses often viewed it as a pad provision service. Caregivers reported long waits not meeting their urgent needs. Secondly, product provision was often inadequate. Most caregivers self-purchased all or many products and substantial variation in product provision was found. The number of products provided was often inadequate. Thirdly, a sense that \"nothing can be done\" was observed by some nurses and caregivers. Caregivers believed that, if nothing else, care information should be provided. Finally, suggestions for improvements were made, including proactive service signposting, joint clinics with dementia services, improved information before crisis point, dementia training for continence nurses and improved product provision.
Continence service inadequacies for PWD and caregivers have been reported for many years. This study demonstrates service provision remains unsatisfactory in the UK. Stakeholders propose a range of service improvements. It highlights that listening to the voices of PWD, caregivers and nurses is crucial for services seeking to improve continence services for PWD living at home.
Journal Article
Biofilm Development on Urinary Catheters Promotes the Appearance of Viable but Nonculturable Bacteria
by
Koerfer, Verena V.
,
Keevil, C. William
,
Wilks, Sandra A.
in
Antibiotics
,
Antimicrobial agents
,
Bacteria
2021
Several antimicrobial urinary catheter materials have been developed, but, although laboratory studies may show a benefit, none have significantly improved clinical outcomes. The use of poorly designed laboratory testing and lack of consideration of the impact of VBNC populations may be responsible. Catheter-associated urinary tract infections have serious consequences, for both patients and health care resources. Much work has been carried out to develop an antimicrobial catheter. Although such developments have shown promise under laboratory conditions, none have demonstrated a clear advantage in clinical trials. Using a range of microbiological and advanced microscopy techniques, a detailed laboratory study comparing biofilm development on silicone, hydrogel latex, and silver alloy-coated hydrogel latex catheters was carried out. Biofilm development by Escherichia coli , Pseudomonas aeruginosa , and Proteus mirabilis on three commercially available catheters was tracked over time. Samples were examined with episcopic differential interference contrast (EDIC) microscopy, culture analysis, and staining techniques to quantify viable but nonculturable (VBNC) bacteria. Both qualitative and quantitative assessments found biofilms to develop rapidly on all three materials. EDIC microscopy revealed the rough surface topography of the materials. Differences between culture counts and quantification of total and dead cells demonstrated the presence of VBNC populations, where bacteria retain viability but are not metabolically active. The use of nonculture-based techniques showed the development of widespread VBNC populations. These VBNC populations were more evident on silver alloy-coated hydrogel latex catheters, indicating a bacteriostatic effect at best. The laboratory tests reported here, which detect VBNC bacteria, allow more rigorous assessment of antimicrobial catheters, explaining why there is often minimal benefit to patients. IMPORTANCE Several antimicrobial urinary catheter materials have been developed, but, although laboratory studies may show a benefit, none have significantly improved clinical outcomes. The use of poorly designed laboratory testing and lack of consideration of the impact of VBNC populations may be responsible. While the presence of VBNC populations is becoming more widely reported, there remains a lack of understanding of the clinical impact or influence of exposure to antimicrobial products. This is the first study to investigate the impact of antimicrobial surface materials and the appearance of VBNC populations. This demonstrates how improved testing is needed before clinical trials are initiated.
Journal Article
Interventions delivered by primary or community healthcare professionals to support people living at home with dementia with activities of daily living: a systematic review and narrative synthesis
by
Santer, Miriam
,
Bradbury, Barbara
,
Manthorpe, Jill
in
Activities of Daily Living
,
Aging
,
Analysis
2024
Background
Most people living with dementia live in their own home supported by family carers. One of the most challenging problems they face is managing toilet-use and continence. Carers have repeatedly asked for better advice from healthcare professionals. The purpose of this systematic review was to inform the development of an intervention to support healthcare professionals to provide existing continence management advice to the carers of people living at home with dementia. It aimed to identify and synthesise lessons from the development and evaluation of interventions, involving primary or community healthcare professionals, to support the provision of management advice aimed at supporting people living at home with dementia and their carers with activities of daily living. Due to a lack of relevant continence or toilet-use interventions, this included, but was not limited to, toileting or continence care.
Methods
Literature (February 2009-November 2022) was searched using five databases: MEDLINE (Ovid); PsycINFO (Ovid); EMBASE (Ovid); Cumulative Index to Nursing and Allied Health Literature (CINAHL) (EBSCO); and Cochrane Central Register of Controlled Trials (CENTRAL). Empirical studies using a variety of methodologies were included and thus the quality of papers appraised using the Mixed-Methods Appraisal Tool. No studies were excluded based on quality. A narrative synthesis was undertaken.
Results
Twelve articles reporting on 10 interventions were included. Most comprised the provision of online resources only, although some combined these with online or face-to-face contact with healthcare professionals. A variety of methodologies was utilised including randomised controlled trials. The quality of included studies was variable. Six main themes were identified: mode of delivery; targeted and tailored resources; content, design and navigation; credibility; user involvement in the development and evaluation of information resources; and role of professionals and organisations.
Conclusions
Despite the urgent need to better support people living at home with dementia and their carers, this review highlights the paucity of studies reporting on interventions delivered within primary and community healthcare contexts to provide management advice aimed at supporting this population with activities of daily living. This review has identified important considerations that will potentially aid the development, delivery and evaluation of such interventions.
Systematic Review Registration
PROSPERO International Prospective Register of Systematic Reviews CRD42022372456.
Journal Article
Healthcare professionals’ experiences and views of providing continence support and advice to people living at home with dementia: “That’s a carer’s job”
by
Santer, Miriam
,
Bradbury, Barbara
,
Manthorpe, Jill
in
Aging
,
Beliefs, opinions and attitudes
,
Care and treatment
2024
Background
People living with dementia at home and their family carers often feel unsupported by healthcare professionals in managing continence problems. In turn, primary and community-based healthcare professionals have reported lacking specific knowledge on dementia-continence. This study aimed to understand more about healthcare professionals’ experiences and views of supporting people living with dementia experiencing continence problems, as part of developing acceptable resources. Having a nuanced understanding of unmet need would facilitate the design of engaging resources that enable healthcare professionals to provide more effective continence support to people living with dementia at home.
Methods
Semi-structured interviews were conducted with a range of healthcare professionals (
n
= 31) working in primary and community care in the South of England in 2023. Transcribed interviews were uploaded to NVivo 12, then analysed inductively and deductively using a thematic framework.
Results
Continence-related conversations were avoided by many healthcare professionals due to lack of dementia-continence specific knowledge. Many considered that continence problems of people living with dementia were largely outside their remit once a physical cause had been ruled out. This contributed to a lack of priority and proactivity in raising the subject of continence in their consultations. Challenges to providing support included limited consultation time and lack of access to specialist services with availability to support individuals.
Conclusion
There is substantial scope to support primary and community-based healthcare professionals in their provision of continence-related support and advice to people living at home with dementia. This includes addressing knowledge deficits, enhancing confidence and instilling a sense of accomplishment.
Journal Article
PREVENTion and treatment of incontinence-associated dermatitis through a codesigned manual (PREVENT-IAD): a study protocol for a feasibility cluster randomised controlled trial with a nested process evaluation
2024
IntroductionIncontinence is commonly experienced by adults who receive care support in a residential facility or in their own home. These individuals are at risk of developing incontinence‐associated dermatitis (IAD), which is caused by prolonged and repeated exposure of the skin to urine or faeces. An IAD manual was developed providing an evidence-based clinical algorithm and an e-learning training programme for the prevention and treatment of IAD. The aim of the study is to establish the feasibility of conducting a definitive trial to examine the clinical and cost-effectiveness of the IAD manual. The objectives are to assess recruitment and attrition rates, acceptability of the IAD manual and intervention fidelity.Methods and analysisA feasibility cluster randomised controlled trial will be conducted in residential nursing homes and in the homes of people receiving formal care support in London and Hampshire, England. A total of six clusters including n=248 participants who are incontinent of urine, or faeces will be included. At each intervention site, care staff will be trained to implement the IAD manual over a 6-month period. Quantitative outcomes include IAD incidence and severity, IAD-related pain, satisfaction with care and mental health. A qualitative evaluation of care staff and care receivers’ experiences of participation will be conducted. Rates and proportions of each feasibility outcome will be described informing the sample size estimation for a definitive cluster randomised controlled trial. A thematic analysis of the qualitative data will be guided by a logic model detailing potential factors impacting on both the study methodology and adoption of the IAD manual into routine care.Ethics and disseminationThe study received the approval of the Queens Square Ethics Committee Health Research Authority 23/LO/036, (Project ID 296167). Results will be disseminated through peer-reviewed open-access journals and international conferencesTrial registration number ISRCTN70866724.
Journal Article
“It's easier to stick a tube in”: a qualitative study to understand clinicians’ individual decisions to place urinary catheters in acute medical care
by
Prieto, Jacqui
,
Fader, Mandy
,
Murphy, Catherine
in
Attitude of Health Personnel
,
Bladder
,
Catheter-Related Infections - prevention & control
2015
BackgroundIndwelling urinary catheters (IUCs) placed in acute care are a leading cause of healthcare-associated urinary tract infection. Despite initiatives to minimise the placement of IUCs, levels of inappropriate use are still considered unacceptable. IUC practice is difficult to change, and factors influencing clinicians’ decisions need to be better understood.ObjectiveTo explore why clinicians decide to place IUCs in acute medical care.MethodsWe conducted a qualitative study in the emergency department and acute medical wards of a 1200+ bed hospital, undertaking 30 retrospective think aloud and 20 semistructured interviews with nurses and physicians who made the decision to place an IUC. A purposive sample and thematic analysis were used.ResultsOpinions on when an IUC was warranted varied considerably. Inconsistency in decision-making was caused by differing beliefs on when an IUC was appropriate for each clinical indication. Numerous patient and non-patient factors, including clinical setting, resources, patient age and gender and staff workload, also impacted on each decision. Assessing when the benefit of an IUC outweighed the risk could be problematic due to conflicting goals.ConclusionsThese findings help to explain why clinicians sometimes deviate from IUC best practice guidance and resist interventions to modify practice. In order to engage nurses and physicians in change, interventions to reduce IUC use should acknowledge and respond to the complexity and lack of clarity often faced by clinicians making the decision to place an IUC. However, it is equally important that inconsistencies in IUC-related beliefs are recognised, investigated and, where appropriate, challenged.
Journal Article
Trial to compare mixed-use (multi-use and single-use) intermittent catheter management with single-use management over 12 months (The MultICath Trial): protocol for a non-inferiority randomised controlled trial
2024
IntroductionEvaluating the safety and acceptability of reusing catheters for intermittent catheterisation (IC) is one of the top 10 continence research priorities identified by the UK James Lind Alliance Priority Setting Partnership in 2008. There are an estimated 50 000 IC users in England and this number is rising. Globally, both single-use catheters (thrown away after use) and multi-use/reusable ones (cleaned between uses) are used. Using multi-use catheters as well as single-use ones (mixed-use) could bring benefits (eg, reducing plastic waste and patients never running out of catheters) and offer more choice to users. Evidence is needed that mixed-use is at least as safe and acceptable as using only single-use catheters.MethodsThe MultICath Trial is a non-inferiority randomised controlled trial involving 578 participants. The aim is to compare mixed-use catheter management with single-use catheter management over 12 months. Participants are randomised on a 1:1 basis to either mixed-use catheter management, which includes an evidence-based cleaning method for the multi-use catheters (intervention) or single-use catheter management (control). Following randomisation, participants are followed up for 12 months. The primary outcome is at least one episode of microbiologically confirmed symptomatic urinary tract infection with help-seeking or self-help behaviour over the 12-month follow-up period. Laboratory analysis of patient-initiated urine samples is blind. Secondary outcomes include antibiotic use, microhaematuria, visible blood on catheter/in urine, quality of life and health economics. A qualitative sub-study to examine participant experiences using mixed-use is included.Ethics and disseminationEthical review was undertaken by South Central-Hampshire A Research Ethics Committee and favourable opinion was granted on 12 July 2019 (reference: 19/SC/0334). Written, informed consent to participate was obtained from all participants. Results will be disseminated in peer-reviewed publications, in the National Institute for Health and Care Research journal library and to participants and the public via a lay summary published on the trial website.Trial registration number ISRCTN42028483.
Journal Article
Cost-effectiveness of a primary healthcare intervention to treat male lower urinary tract symptoms: the TRIUMPH cluster randomised controlled trial
by
Ridd, Matthew J
,
Macaulay, Margaret
,
Worthington, Jo
in
Case reports
,
Cost analysis
,
Cost-Benefit Analysis
2024
ObjectivesTo estimate the cost-effectiveness of a primary care intervention for male lower urinary tract symptoms (LUTS) compared with usual care.DesignEconomic evaluation alongside a cluster randomised controlled trial from a UK National Health Service (NHS) perspective with a 12-month time horizon.SettingThirty NHS general practice sites in England.Participants1077 men aged 18 or older identified in primary care with bothersome LUTS.InterventionsA standardised and manualised intervention for the treatment of bothersome LUTS was compared with usual care. The intervention group (n=524) received a standardised information booklet with guidance on conservative treatment for LUTS, urinary symptom assessment and follow-up contacts for 12 weeks. The usual care group (n=553) followed local guidelines between general practice sites.MeasuresResource use was obtained from electronic health records, trial staff and participants, and valued using UK reference costs. Quality-adjusted life-years (QALYs) were calculated from the EQ-5D-5L questionnaire. Adjusted mean differences in costs and QALYs and incremental net monetary benefit were estimated.Results866 of 1077 (80.4%) participants had complete data and were included in the base-case analysis. Over the 12-month follow-up period, intervention and usual care arms had similar mean adjusted costs and QALYs. Mean differences were lower in the intervention arm for adjusted costs −£29.99 (95% CI −£109.84 to £22.63) while higher in the intervention arm for adjusted QALYs 0.001 (95% CI −0.011 to 0.014). The incremental net monetary benefit statistic was £48.01 (95% CI −£225.83 to £321.85) at the National Institute for Health and Care Excellence UK threshold of £20 000 per QALY. The cost-effectiveness acceptability curve showed a 63% probability of the intervention arm being cost-effective at this threshold.ConclusionsCosts and QALYs were similar between the two arms at 12 months follow-up. This indicates that the intervention can be implemented in general practice at neutral cost.Trial registration numberISRCTN11669964.
Journal Article