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Hoy — Mayo 14th 2024Tus fuentes RSS

Bacterial growth in patients with low back pain and Modic changes: protocol of a multicentre, case-control biopsy study

Por: Rolfsen · M. P. · Gammelsrud · K. W. · Espeland · A. · Braten · L. C. · Mjones · S. B. · Austevoll · I. · Dolatowski · F. C. · Arrestad · M. B. · Toppe · M. K. · Orlien · I. E. · Holberg-Petersen · M. · Fagerland · M. · Zwart · J.-A. · Storheim · K. · Hellum · C.
Introduction

Bacterial infection and Modic changes (MCs) as causes of low back pain (LBP) are debated. Results diverged between two randomised controlled trials examining the effect of amoxicillin with and without clavulanic acid versus placebo on patients with chronic LBP (cLBP) and MCs. Previous biopsy studies have been criticised with regard to methods, few patients and controls, and insufficient measures to minimise perioperative contamination. In this study, we minimise contamination risk, include a control group and optimise statistical power. The main aim is to compare bacterial growth between patients with and without MCs.

Methods and analysis

This multicentre, case–control study examines disc and vertebral body biopsies of patients with cLBP. Cases have MCs at the level of tissue sampling, controls do not. Previously operated patients are included as a subgroup. Tissue is sampled before antibiotic prophylaxis with separate instruments. We will apply microbiological methods and histology on biopsies, and predefine criteria for significant bacterial growth, possible contamination and no growth. Microbiologists, surgeons and pathologist are blinded to allocation of case or control. Primary analysis assesses significant growth in MC1 versus controls and MC2 versus controls separately. Bacterial disc growth in previously operated patients, patients with large MCs and growth from the vertebral body in the fusion group are all considered exploratory analyses.

Ethics and dissemination

The Regional Committees for Medical and Health Research Ethics in Norway (REC South East, reference number 2015/697) has approved the study. Study participation requires written informed consent. The study is registered at ClinicalTrials.gov (NCT03406624). Results will be disseminated in peer-reviewed journals, scientific conferences and patient fora.

Trial registration number

NCT03406624.

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Raman difference spectroscopy and U-Net convolutional neural network for molecular analysis of cutaneous neurofibroma

by Levi Matthies, Hendrik Amir-Kabirian, Medhanie T. Gebrekidan, Andreas S. Braeuer, Ulrike S. Speth, Ralf Smeets, Christian Hagel, Martin Gosau, Christian Knipfer, Reinhard E. Friedrich

In Neurofibromatosis type 1 (NF1), peripheral nerve sheaths tumors are common, with cutaneous neurofibromas resulting in significant aesthetic, painful and functional problems requiring surgical removal. To date, determination of adequate surgical resection margins–complete tumor removal while attempting to preserve viable tissue–remains largely subjective. Thus, residual tumor extension beyond surgical margins or recurrence of the disease may frequently be observed. Here, we introduce Shifted-Excitation Raman Spectroscopy in combination with deep neural networks for the future perspective of objective, real-time diagnosis, and guided surgical ablation. The obtained results are validated through established histological methods. In this study, we evaluated the discrimination between cutaneous neurofibroma (n = 9) and adjacent physiological tissues (n = 25) in 34 surgical pathological specimens ex vivo at a total of 82 distinct measurement loci. Based on a convolutional neural network (U-Net), the mean raw Raman spectra (n = 8,200) were processed and refined, and afterwards the spectral peaks were assigned to their respective molecular origin. Principal component and linear discriminant analysis was used to discriminate cutaneous neurofibromas from physiological tissues with a sensitivity of 100%, specificity of 97.3%, and overall classification accuracy of 97.6%. The results enable the presented optical, non-invasive technique in combination with artificial intelligence as a promising candidate to ameliorate both, diagnosis and treatment of patients affected by cutaneous neurofibroma and NF1.

Task shifting in Dutch nursing practice: A repeated cross‐sectional analysis of nurses' experiences

Abstract

Aim

This study aims firstly to identify shifts in the execution of medical tasks by nurses in the past decade. Secondly, it aims to explore nurses' perspectives on task shifting: how they think task shifting affects the quality of care, the attractiveness of nursing practice and their collaboration with physicians.

Design

A quantitative repeated cross-sectional study.

Methods

A nationwide survey was conducted among Dutch registered nurses (RNs) working in hospitals and home care, first in 2012 and again in 2022, with sample sizes of 359 and 362, respectively. Analyses were based on descriptive statistics and logistic and linear regressions.

Results

Between 2012 and 2022, there was a significant increase in the execution of only one medical task by nurses, namely prescribing over-the-counter medication. The majority reported in both years that task shifting has positive impact on their professional autonomy and the attractiveness of nursing practice. However, most nurses also reported that task shifting increased their workload (72.7% in 2022) could lead to conflicts in care teams (20.9% in 2022 compared to 14.7% in 2012) and may cause physicians to feel threatened (32.8% in 2022 and 29.9% in 2012). There were no significant changes in nurses' perception of the impact of task shifting on quality of care, the attractiveness of nursing practice and the nurse–physician relationship.

Conclusion

There was an increase in the execution of prescribing over-the-counter-medication by nurses between 2012 and 2022. However, both in 2012 and in 2022, as the majority of nurses reported that task shifting increased their workload, there is reason to worry about this negative consequence of task shifting, e.g. with regard to labour market issues. Further research, also among the medical profession, is needed to better understand and address the implications of task shifting for the nursing profession.

Implications for the Profession

Implications for the nursing profession include potential scope expansion with complex tasks, attracting more individuals to nursing careers, although an eye must also be kept on what that means for the workload of nurses and the relationship with physicians.

Impact

Nurse prescribing medicines was more executed in 2022 compared to 2012. Nurses had a predominantly positive perspective on task shifting, but still felt it can cause conflicts in care teams, high workload and physicians feeling threatened. These results can help during implementation of task shifting and in monitoring the perceived effects of task shifting among nurses.

Reporting Method

This study followed the STROBE reporting guideline for cross-sectional studies.

Patient or Public Contribution

No Patient or Public Contribution. This study focussed on the task shifting (perspectives) of nurses.

Nurses' use of ‘wellness’ supplements during the COVID‐19 pandemic in the United States

Abstract

Aim

Quantify disparities and identify correlates and predictors of ‘wellness’ supplement use among nurses during the first year of the pandemic.

Design

Longitudinal secondary analysis of Nurses' Health Studies 2 and 3 and Growing Up Today Study data.

Methods

Sample included 36,518 total participants, 12,044 of which were nurses, who completed surveys during the first year of the COVID-19 pandemic (April 2020 to April 2021). Analyses were conducted in March 2023. Modified Poisson models were used to estimate disparities in ‘wellness’ supplement use between nurses and non-healthcare workers and, among nurses only, to quantify associations with workplace-related predictors (occupational discrimination, PPE access, workplace setting) and psychosocial predictors (depression/anxiety, county-level COVID-19 mortality). Models included race/ethnicity, gender identity, age and cohort as covariates.

Results

Nurses were significantly more likely to use all types of supplements than non-healthcare workers. Lacking personal protective equipment and experiencing occupational discrimination were significantly associated with new immune supplement use. Depression increased the risk of using weight loss, energy and immune supplements.

Conclusion

Nurses' disproportionate use of ‘wellness’ supplements during the COVID-19 pandemic may be related to workplace and psychosocial stressors. Given well-documented risks of harm from the use of ‘wellness’ supplements, the use of these products by nurses is of concern.

Impact

‘Wellness’ supplements promoting weight loss, increased energy, boosted immunity and cleansing of organs are omnipresent in today's health-focused culture, though their use has been associated with harm. This is of added concern among nurses given their risk of COVID-19 infection at work. Our study highlighted the risk factors associated with use of these products (lacking PPE and experiencing occupational discrimination). Findings support prior research suggesting a need for greater public health policy and education around the use of ‘wellness’ supplements.

Reporting Method

STROBE guidelines were followed throughout manuscript.

Patient or Public Contribution

No patient or public contribution was involved.

Understanding and maximising the community impact of seasonal malaria chemoprevention in Burkina Faso (INDIE-SMC): study protocol for a cluster randomised evaluation trial

Por: Moreno · M. · Barry · A. · Gmeiner · M. · Yaro · J. B. · Serme · S. S. · Byrne · I. · Ramjith · J. · Ouedraogo · A. · Soulama · I. · Grignard · L. · Soremekun · S. · Koele · S. · ter Heine · R. · Ouedraogo · A. Z. · Sawadogo · J. · Sanogo · E. · Ouedraogo · I. N. · Hien · D. · Sirima · S. B
Introduction

Seasonal malaria chemoprevention (SMC) involves repeated administrations of sulfadoxine-pyrimethamine plus amodiaquine to children below the age of 5 years during the peak transmission season in areas of seasonal malaria transmission. While highly impactful in reducing Plasmodium falciparum malaria burden in controlled research settings, the impact of SMC on infection prevalence is moderate in real-life settings. It remains unclear what drives this efficacy decay. Recently, the WHO widened the scope for SMC to target all vulnerable populations. The Ministry of Health (MoH) in Burkina Faso is considering extending SMC to children below 10 years old. We aim to assess the impact of SMC on clinical incidence and parasite prevalence and quantify the human infectious reservoir for malaria in this population.

Methods and analysis

We will perform a cluster randomised trial in Saponé Health District, Burkina Faso, with three study arms comprising 62 clusters of three compounds: arm 1 (control): SMC in under 5-year-old children, implemented by the MoH without directly observed treatment (DOT) for the full course of SMC; arm 2 (intervention): SMC in under 5-year-old children, with DOT for the full course of SMC; arm 3 (intervention): SMC in under 10-year-old children, with DOT for the full course of SMC. The primary endpoint is parasite prevalence at the end of the malaria transmission season. Secondary endpoints include the impact of SMC on clinical incidence. Factors affecting SMC uptake, treatment adherence, drug concentrations, parasite resistance markers and transmission of parasites will be determined.

Ethics and dissemination

The London School of Hygiene & Tropical Medicine’s Ethics Committee (29193) and the Burkina Faso National Medical Ethics Committee (Deliberation No 2023-05-104) approved this study. The findings will be presented to the community; disease occurrence data and study outcomes will also be shared with the Burkina Faso MoH. Findings will be published irrespective of their results.

Trial registration number

NCT05878366.

Evaluations of virtual exercise programmes for adults with mobility limitations: a scoping review protocol incorporating an equity lens to inform the development of strategies to optimise participation of under-represented groups

Por: dos Santos · R. B. · Lin · J. · Badwal · A. · Singh · H. · Jaglal · S. B. · Sperling · C. · Salbach · N. M.
Introduction

For individuals with mobility limitations, virtual exercise programmes can address the challenges of in-person participation in community exercise programmes. A synthesis of studies of virtual exercise programmes targeting mobility limitations provided outside of conventional rehabilitation services and strategies used to optimise equitable access and inclusivity in these programmes is lacking. We aim to characterise evaluations of virtual exercise programmes for adults with mobility limitations, and the nature of and extent to which equity, diversity and inclusion considerations are integrated in the research process.

Methods and analysis

A scoping review following a six-stage methodological framework, including a consultation exercise, is proposed. A comprehensive strategy will be used to search Medline, Embase, PEDro, CINAHL and Scopus to identify peer-reviewed studies evaluating virtual exercise programmes for adults with mobility limitations living in the community. Three trained reviewers will select studies independently. Data (eg, study methodology, programme structure and content, participant characteristics) will be extracted using a standardised form, and collated and summarised using quantitative and qualitative methods. The PROGRESS-Plus and International Classification of Functioning, Disability and Health frameworks will be used to classify participant characteristics and study outcomes, respectively. During the consultation exercise, key knowledge users, including exercise participants, programme providers and coordinators, and members of community organisations for persons living with disabilities and under-represented groups, will be asked to provide insights regarding the applicability of review findings. A directed content analysis of data from the consultation exercise will be performed.

Ethics and dissemination

The research ethics board at the University of Toronto approved the consultation exercise. Findings will be disseminated through peer-reviewed publications and conference presentations. Findings will enhance understanding of current research evaluating virtual exercise programmes and inform future research and strategies for promoting equitable access and outcomes for individuals with mobility limitations.

Registration details

https://doi.org/10.17605/OSF.IO/X5JMA.

Serotype 3 Experimental Human Pneumococcal Challenge (EHPC) study protocol: dose ranging and reproducibility in a healthy volunteer population (challenge 3)

Por: Hazenberg · P. · Robinson · R. E. · Farrar · M. · Solorzano · C. · Hyder-Wright · A. · Liatsikos · K. · Brunning · J. · Fleet · H. · Bettam · A. · Howard · A. · Kenny-Nyazika · T. · Urban · B. · Mitsi · E. · El Safadi · D. · Davies · K. · Lesosky · M. · Gordon · S. B. · Ferreira · D. M.
Introduction

Since the introduction of pneumococcal conjugate vaccines, pneumococcal disease rates have declined for many vaccine-type serotypes. However, serotype 3 (SPN3) continues to cause significant disease and is identified in colonisation epidemiological studies as one of the top circulating serotypes in adults in the UK. Consequently, new vaccines that provide greater protection against SPN3 colonisation/carriage are urgently needed. The Experimental Human Pneumococcal Challenge (EHPC) model is a unique method of determining pneumococcal colonisation rates, understanding acquired immunity, and testing vaccines in a cost-effective manner. To enhance the development of effective pneumococcal vaccines against SPN3, we aim to develop a new relevant and safe SPN3 EHPC model with high attack rates which could be used to test vaccines using small sample size.

Methods and analysis

This is a human challenge study to establish a new SPN3 EHPC model, consisting of two parts. In the dose-ranging/safety study, cohorts of 10 healthy participants will be challenged with escalating doses of SPN3. If first challenge does not lead into colonisation, participants will receive a second challenge 2 weeks after. Experimental nasopharyngeal (NP) colonisation will be determined using nasal wash sampling. Using the dose that results in ≥50% of participants being colonised, with a high safety profile, we will complete the cohort with another 33 participants to check for reproducibility of the colonisation rate. The primary outcome of this study is to determine the optimal SPN3 dose and inoculation regime to establish the highest rates of NP colonisation in healthy adults. Secondary outcomes include determining density and duration of experimental SPN3 NP colonisation and characterising mucosal and systemic immune responses to SPN3 challenge.

Ethics and dissemination

This study is approved by the NHS Research and Ethics Committee (reference 22/NW/0051). Findings will be published in peer-reviewed journals and reports will be made available to participants.

Electroacupuncture use for treatment of taxane-induced peripheral neuropathy in patients with breast cancer: protocol for a pilot, randomised, blinded, sham-controlled trial (EA for CIPN)

Por: Choi · V. · Park · S. B. · Lacey · J. · Kumar · S. · Heller · G. · Grimison · P.
Introduction

Chemotherapy-induced peripheral neuropathy (CIPN) is a common dose-limiting side effect of neurotoxic chemotherapy. Acute symptoms of CIPN during treatment can lead to dose reduction and cessation. Trials using electroacupuncture (EA) to treat established CIPN postchemotherapy have shown some efficacy. The current trial aims to assess the feasibility and preliminary efficacy of using EA to treat CIPN during chemotherapy.

Methods and analysis

The current study is a single-centre, 1:1 randomised, sham-controlled pilot study set in a tertiary cancer hospital in Sydney, Australia, and will recruit 40 adult patients with early breast cancer undergoing adjuvant or neoadjuvant paclitaxel chemotherapy. Patients who develop CIPN within the first 6 weeks of chemotherapy will receive either true EA or sham-EA once a week for 10 weeks. The coprimary endpoints are recruitment and adherence rate, successful blinding of patients and compliance with the follow-up period. Secondary endpoints are mean change of CIPN symptoms from randomisation to end of treatment, sustained change in CIPN symptoms at 8-week and 24-week follow-up postchemotherapy, proportion of subjects attaining completion of 12 weeks of chemotherapy without dose reduction or cessation, change in acupuncture expectancy response pretreatment, during treatment and posttreatment. The primary assessment tool for the secondary endpoints will be a validated patient-reported outcome measure (European Organisation for Research and Treatment of Cancer Quality of Life Chemotherapy-Induced Peripheral Neuropathy) captured weekly from randomisation to week 12 of chemotherapy.

Ethics and dissemination

The study protocol (2021/ETH12123) has been approved by the institutional Human Research Ethics Committee at St Vincent’s Hospital Sydney and Chris O’Brien Lifehouse. Informed consent will be obtained prior to starting study-related procedures. The results will be disseminated in peer-reviewed journals and at scientific conferences.

Trial registration number

ACTRN12622000081718.

The Fit After Baby randomized controlled trial: An mHealth postpartum lifestyle intervention for women with elevated cardiometabolic risk

by Jacinda M. Nicklas, Laura Pyle, Andrey Soares, Jennifer A. Leiferman, Sheana S. Bull, Suhong Tong, Ann E. Caldwell, Nanette Santoro, Linda A. Barbour

Background

Postpartum women with overweight/obesity and a history of adverse pregnancy outcomes are at elevated risk for cardiometabolic disease. Postpartum weight loss and lifestyle changes can decrease these risks, yet traditional face-to-face interventions often fail. We adapted the Diabetes Prevention Program into a theory-based mobile health (mHealth) program called Fit After Baby (FAB) and tested FAB in a randomized controlled trial.

Methods

The FAB program provided 12 weeks of daily evidence-based content, facilitated tracking of weight, diet, and activity, and included weekly coaching and gamification with points and rewards. We randomized women at 6 weeks postpartum 2:1 to FAB or to the publicly available Text4baby (T4B) app (active control). We measured weight and administered behavioral questionnaires at 6 weeks, and 6 and 12 months postpartum, and collected app user data.

Results

81 eligible women participated (77% White, 2% Asian, 15% Black, with 23% Hispanic), mean baseline BMI 32±5 kg/m2 and age 31±5 years. FAB participants logged into the app a median of 51/84 (IQR 25,71) days, wore activity trackers 66/84 (IQR 43,84) days, logged weight 17 times (IQR 11,24), and did coach check-ins 5.5/12 (IQR 4,9) weeks. The COVID-19 pandemic interrupted data collection for the primary 12-month endpoint, and impacted diet, physical activity, and body weight for many participants. At 12 months postpartum women in the FAB group lost 2.8 kg [95% CI -4.2,-1.4] from baseline compared to a loss of 1.8 kg [95% CI -3.8,+0.3] in the T4B group (p = 0.42 for the difference between groups). In 60 women who reached 12 months postpartum before the onset of the COVID-19 pandemic, women randomized to FAB lost 4.3 kg [95% CI -6.0,-2.6] compared to loss in the control group of 1.3 kg [95% CI -3.7,+1.1] (p = 0.0451 for the difference between groups).

Conclusions

There were no significant differences between groups for postpartum weight loss for the entire study population. Among those unaffected by the COVID pandemic, women randomized to the FAB program lost significantly more weight than those randomized to the T4B program. The mHealth FAB program demonstrated a substantial level of engagement. Given the scalability and potential public health impact of the FAB program, the efficacy for decreasing cardiometabolic risk by increasing postpartum weight loss should be tested in a larger trial.

‘I'm still here, I'm alive and breathing’: The experience of Black Americans with long COVID

Abstract

Aims and Objectives

In this study, we aimed to characterize the impact of long COVID on quality of life and approaches to symptom management among Black American adults.

Background

As a novel condition, qualitative evidence concerning long COVID symptoms and their impact on quality of life can inform the refinement of diagnostic criteria and care plans. However, the underrepresentation of Black Americans in long COVID research is a barrier to achieving equitable care for all long COVID patients.

Design

We employed an interpretive description study design.

Methods

We recruited a convenience sample of 15 Black American adults with long COVID. We analysed the anonymized transcripts from race-concordant, semi-structured interviews using an inductive, thematic analysis approach. We followed the SRQR reporting guidelines.

Results

We identified four themes: (1) The impact of long COVID symptoms on personal identity and pre-existing conditions; (2) Self-management strategies for long COVID symptoms; (3) Social determinants of health and symptom management; and (4) Effects on interpersonal relationships.

Conclusion

Findings demonstrate the comprehensive ramifications of long COVID on the lives of Black American adults. Results also articulate how pre-existing conditions, social risk factors, distrust due to systemic racism, and the nature of interpersonal relationships can complicate symptom management.

Relevance to Clinical Practice

Care approaches that support access to and implementation of integrative therapies may be best suited to meet the needs of long COVID patients. Clinicians should also prioritize eliminating patient exposure to discrimination, implicit bias, and microaggressions. This is of particular concern for long COVID patients who have symptoms that are difficult to objectively quantify, such as pain and fatigue.

No Patient or Public Contribution

While patient perspectives and experiences were the focus of this study, patients were not involved with the design or conduct of the study, data analysis or interpretation, or writing the manuscript.

Establishment of oral microbiome in very low birth weight infants during the first weeks of life and the impact of oral diet implementation

by Pedro A. R. Vanzele, Luiz Gustavo Sparvoli, Patricia P. de Camargo, Carla R. Tragante, Glenda P. N. S. Beozzo, Vera L. J. Krebs, Ramon V. Cortez, Carla R. Taddei

Very low birth weight (VLBW) infants, mostly preterm, have many barriers to feeding directly from the mother’s breast, and need to be fed alternatively. Feeding is a major influencer in oral microbial colonization, and this colonization in early life is crucial for the promotion of human health. Therefore, this research aimed to observe the establishment of oral microbiome in VLBW infants during their first month of life through hospitalization, and to verify the impact caused by the implementation of oral diet on the colonization of these newborns. We included 23 newborns followed during hospitalization and analyzed saliva samples collected weekly, using 16S rRNA gene sequencing. We observed a significant decrease in richness and diversity and an increase in dominance over time (q-value Streptococcus. Our results indicate that although time is related to significant changes in the oral microbial profile, oral feeding benefits genera that will remain colonizers throughout the host’s life.

Early Neolithic pastoral land use at Alsónyék-Bátaszék, Hungary (Starčevo culture): New insights from stable isotope ratios

by Magdalena Blanz, Marie Balasse, Delphine Frémondeau, Erika Gál, Anett Osztás, Anna Zs. Biller, Éva Á. Nyerges, Denis Fiorillo, Eszter Bánffy, Maria Ivanova

The earliest introduction of livestock (cattle, goats, sheep, pigs) into the Carpathian Basin was an important step towards farming expansion into continental Europe. This spread beyond the environments of the southern Balkans was accompanied by a reduction in the spectrum of cultivated crops, changes in the relative representation of different domestic animals, and, most likely, adaptations of husbandry practices. How the earliest farmers in the Carpathian Basin kept their domestic stock is still understudied. We explored early animal management and land use strategies at the Starčevo settlement at Alsónyék-Bátaszék, Hungary (Early Neolithic, ca. 5800–5600 cal BC). Settled at the intersection of wide alluvial plains, waterlogged meadows and marshes to the east, and forested hills to the west, early farmers at Alsónyék had a wide variety of options for nourishing their livestock. We performed stable isotope ratio analysis of bone collagen (n = 99; δ13C, δ15N) and tooth enamel (nteeth = 28, sequentially sampled for δ13C and δ18O) from wild and domestic animals to locate them in the landscape and investigate herding practices on a seasonal scale. The bone collagen isotope ratios mostly indicate feeding in open environments. However, results from the sequential analysis of cattle and sheep enamel suggest diverse dietary strategies for winters, including consumption of forest resources, consumption of summer hay and grazing in an open environment. Most pigs appear to have had herbivorous diets, but several individuals likely supplemented their diet with animal protein. Stable isotope ratio results from the Lengyel phase at Alsónyék (ca. 4800–4300 cal BC) suggest more access to animal protein for pigs, and feeding in more open areas by wild boar, red deer and cattle compared to the Starčevo phase. This study’s results demonstrate considerable variability in early animal husbandry practices at Alsónyék.

Potential drug-drug interaction and its determinants among patients with cancer receiving chemotherapy in oncology centres of Northwest Ethiopia: an institutional-based cross-sectional study

Por: Wondm · S. A. · Tamene · F. B. · Gubae · K. · Dagnew · S. B. · Worku · A. A. · Belachew · E. A.
Objective

The study was conducted to assess potential drug–drug interactions (PDDIs) and its determinants among patients with cancer receiving chemotherapy.

Design and setting

An institutional-based cross-sectional study was used. This study was conducted from 1 June 2021 to 15 December 2021, in Northwest Ethiopia oncology centres.

Participants

All eligible patients with cancer received a combination of chemotherapy.

Outcomes

The prevalence and severity of PDDIs were evaluated using three drug interaction databases. Characteristics of participants were presented, arranged and summarised using descriptive statistics. The predictors and outcome variables were examined using logistic regression. The cut-off point was a p value of 0.05.

Results

Of 422 patients included in the study, 304 patients were exposed to at least one PDDI with a prevalence of 72.1% (95 % CI: 68% to 76%) using three drug interaction databases. There were varied reports of the severity of PDDI among databases, but the test agreement using the kappa index was 0.57 (95% CI: 0.52 to 0.62, p=0.0001) which is interpreted as a moderate agreement among three databases. Patients aged ≥50 years old had the risk to be exposed to PDDI by odds of 3.1 times (adjusted OR (AOR)=3.1, 95% CI (1.8 to 5.3); p=0.001) as compared with patients

Conclusion

The main finding of this study is the high prevalence of PDDI, signifying the need for strict patient monitoring for PDDIs among patients with cancer receiving chemotherapy. We suggest the use of at least three drug databases for quality screening. Patients with an age ≥50 years old, polypharmacy and comorbidity were significantly associated with PDDIs. The establishment of oncology clinical pharmacists and computerised reminder mechanisms for PDDIs through drug utilisation review is suggested.

Cohort profile: a large EHR-based cohort with linked pharmacy refill and neighbourhood social determinants of health data to assess heart failure medication adherence

Por: Adhikari · S. · Mukhyopadhyay · A. · Kolzoff · S. · Li · X. · Nadel · T. · Fitchett · C. · Chunara · R. · Dodson · J. · Kronish · I. · Blecker · S. B.
Purpose

Clinic-based or community-based interventions can improve adherence to guideline-directed medication therapies (GDMTs) among patients with heart failure (HF). However, opportunities for such interventions are frequently missed, as providers may be unable to recognise risk patterns for medication non-adherence. Machine learning algorithms can help in identifying patients with high likelihood of non-adherence. While a number of multilevel factors influence adherence, prior models predicting non-adherence have been limited by data availability. We have established an electronic health record (EHR)-based cohort with comprehensive data elements from multiple sources to improve on existing models. We linked EHR data with pharmacy refill data for real-time incorporation of prescription fills and with social determinants data to incorporate neighbourhood factors.

Participants

Patients seen at a large health system in New York City (NYC), who were >18 years old with diagnosis of HF or reduced ejection fraction (

Findings to date

Among 39 963 patients in the cohort, the average age was 73±14 years old, 44% were female and 48% were current/former smokers. The common comorbid conditions were hypertension (77%), cardiac arrhythmias (56%), obesity (33%) and valvular disease (33%). During the study period, 33 606 (84%) patients had an active prescription of beta blocker, 32 626 (82%) had ACEi/ARB/ARNI, 11 611 (29%) MRA and 7472 (19%) SGLT2i. Ninety-nine per cent were from urban metropolitan areas.

Future plans

We will use the established cohort to develop a machine learning model to predict medication adherence, and to support ancillary studies assessing associates of adherence. For external validation, we will include data from an additional hospital system in NYC.

Metformin in the prevention of type 2 diabetes after gestational diabetes in postnatal women (OMAhA): a UK multicentre randomised, placebo-controlled, double-blind feasibility trial with nested qualitative study

Por: Bolou · A. · Drymoussi · Z. · Lanz · D. · Amaefule · C. E. · Gonzalez Carreras · F. J. · Pardo Llorente · M. d. C. · Dodds · J. · Pizzo · E. · Thomas · A. · Heighway · J. · Harden · A. · Sanghi · A. · Hitman · G. · Zamora · J. · Perez · T. · Huda · M. S. B. · Thangaratinam · S.
Objective

To determine the feasibility of a definitive trial of metformin to prevent type 2 diabetes in the postnatal period in women with gestational diabetes.

Design

A multicentre, placebo-controlled, double-blind randomised feasibility trial with qualitative evaluation.

Setting

Three inner-city UK National Health Service hospitals in London.

Participants

Pregnant women with gestational diabetes treated with medication.

Interventions

2 g of metformin (intervention) or placebo (control) from delivery until 1 year postnatally.

Primary outcome measures

Rates of recruitment, randomisation, follow-up, attrition and adherence to the intervention.

Secondary outcome measures

Preliminary estimates of glycaemic effects, qualitative exploration, acceptability of the intervention and costs.

Results

Out of 302 eligible women, 57.9% (175/302) were recruited. We randomised 82.3% (144/175) of those recruited, with 71 women in the metformin group and 73 women in the placebo group. Of the participants remaining in the study and providing any adherence information, 54.1% (59/109) took at least 75% of the target intervention dose; the overall mean adherence was 64% (SD 33.6). Study procedures were found to be acceptable to women and healthcare professionals. An increased perceived risk of developing type 2 diabetes, or a positive experience of taking metformin during pregnancy, encouraged participation and adherence to the intervention. Barriers to adherence included disruption to the medication schedule caused by the washout periods ahead of each study visit or having insufficient daily reminders.

Conclusions

It is feasible to run a full-scale definitive trial on the effectiveness of metformin to prevent type 2 diabetes in women with gestational diabetes, during the early postnatal period. Adherence and engagement with the study could be improved with more regular reminders and potentially the addition of ongoing educational or peer support to reinforce messages around type 2 diabetes prevention.

Trial registration number

ISRCTN20930880.

Effectiveness of a midwife-led continuity of care model on birth outcomes and maternal mental health in vulnerable women: study protocol for a randomised controlled trial with an internal pilot, process evaluation and economic analysis

Por: Willan · K. · Moss · R. H. · Santorelli · G. · Ahern · S. · Bryant · M. · Bywater · T. · Blower · S. L. · Richardson · G. · Hinde · S. · Huo · D. · Wright · J. · Dickerson · J. · Innovation Hub · B. S. B.
Introduction

Women from social disadvantage are at greater risk of poor birth outcomes. The midwife-led continuity of care (MCC) model, which offers flexible and relational care from a small team of midwives, has demonstrated improved birth outcomes. In the general population, the impact of MCC on socially disadvantaged women and on birth outcomes is still unclear. This protocol describes a pragmatic evaluation of the MCC model in a socially disadvantaged population.

Methods and analysis

An open-labelled individual prospective randomised controlled trial with an internal pilot, process evaluation and economic analysis, from 1 April 2022 to 31 March 2024.

Women will be randomly allocated to MCC or standard care as part of usual midwifery practice. Participants and midwives will not be blinded, but researchers will be. An internal pilot will test the feasibility of this process.

Participants are those randomised into MCC or standard care, who consent to participate in one of two Born in Bradford (BiB) birth cohort studies. Outcomes are taken from routinely linked health data, supplemented by additional data capture. The sample size is fixed by the capacity of MCC teams, commissioning duration and numbers recruited into the cohort. The estimated maximum fixed sample size is 1,410 pregnancies (minimum 734).

Intention to treat (ITT) analysis will be undertaken to assess the impact of MCC on two independent primary outcomes. An economic evaluation will explore the impact on health resource use and a process evaluation will explore fidelity to the MCC model, and barriers/facilitators to implementation from midwives’ and women’s perspectives.

Ethics and dissemination

Ethical approval has been obtained for the randomisation in midwifery practice, use of the cohort data for evaluation and for the process evaluation. Findings will be published in peer-reviewed journals, presented at conferences and translated into policy briefings.

Trial registration number

IsRCTNhttps://doi.org/10.1186/ISRCTN31836167

Talking numbers: how women and providers use risk scores during and after risk counseling - a qualitative investigation from the NRG Oncology/NSABP DMP-1 study

Por: Blakeslee · S. B. · Gunn · C. M. · Parker · P. A. · Fagerlin · A. · Battaglia · T. · Bevers · T. B. · Bandos · H. · McCaskill-Stevens · W. · Kennedy · J. W. · Holmberg · C.
Objectives

Little research exists on how risk scores are used in counselling. We examined (a) how Breast Cancer Risk Assessment Tool (BCRAT) scores are presented during counselling; (b) how women react and (c) discuss them afterwards.

Design

Consultations were video-recorded and participants were interviewed after the consultation as part of the NRG Oncology/National Surgical Adjuvant Breast and Bowel Project Decision-Making Project 1 (NSABP DMP-1).

Setting

Two NSABP DMP-1 breast cancer care centres in the USA: one large comprehensive cancer centre serving a high-risk population and an academic safety-net medical centre in an urban setting.

Participants

Thirty women evaluated for breast cancer risk and their counselling providers were included.

Methods

Participants who were identified as at increased risk of breast cancer were recruited to participate in qualitative study with a video-recorded consultation and subsequent semi-structured interview that included giving feedback and input after viewing their own consultation. Consultation videos were summarised jointly and inductively as a team.tThe interview material was searched deductively for text segments that contained the inductively derived themes related to risk assessment. Subgroup analysis according to demographic variables such as age and Gail score were conducted, investigating reactions to risk scores and contrasting and comparing them with the pertinent video analysis data. From this, four descriptive categories of reactions to risk scores emerged. The descriptive categories were clearly defined after 19 interviews; all 30 interviews fit principally into one of the four descriptive categories.

Results

Risk scores were individualised and given meaning by providers through: (a) presenting thresholds, (b) making comparisons and (c) emphasising or minimising the calculated risk. The risk score information elicited little reaction from participants during consultations, though some added to, agreed with or qualified the provider’s information. During interviews, participants reacted to the numbers in four primary ways: (a) engaging easily with numbers; (b) expressing greater anxiety after discussing the risk score; (c) accepting the risk score and (d) not talking about the risk score.

Conclusions

Our study highlights the necessity that patients’ experiences must be understood and put into relation to risk assessment information to become a meaningful treatment decision-making tool, for instance by categorising patients’ information engagement into types.

Trial registration number

NCT01399359.

Effects of a laboratory-based aerobic exercise intervention on brain volume and cardiovascular health markers: protocol for a randomised clinical trial

Por: Molina Hidalgo · C. · Collins · A. M. · Crisafio · M. E. · Grove · G. · Kamarck · T. W. · Kang · C. · Leckie · R. L. · MacDonald · M. · Manuck · S. B. · Marsland · A. L. · Muldoon · M. F. · Rasero · J. · Scudder · M. R. · Velazquez-Diaz · D. · Verstynen · T. · Wan · L. · Gianaros · P. J
Introduction

Physical activity (PA) has beneficial effects on brain health and cardiovascular disease (CVD) risk. Yet, we know little about whether PA-induced changes to physiological mediators of CVD risk influence brain health and whether benefits to brain health may also explain PA-induced improvements to CVD risk. This study combines neurobiological and peripheral physiological methods in the context of a randomised clinical trial to better understand the links between exercise, brain health and CVD risk.

Methods and analysis

In this 12-month trial, 130 healthy individuals between the ages of 26 and 58 will be randomly assigned to either: (1) moderate-intensity aerobic PA for 150 min/week or (2) a health information control group. Cardiovascular, neuroimaging and PA measurements will occur for both groups before and after the intervention. Primary outcomes include changes in (1) brain structural areas (ie, hippocampal volume); (2) systolic blood pressure (SBP) responses to functional MRI cognitive stressor tasks and (3) heart rate variability. The main secondary outcomes include changes in (1) brain activity, resting state connectivity, cortical thickness and cortical volume; (2) daily life SBP stress reactivity; (3) negative and positive affect; (4) baroreflex sensitivity; (5) pulse wave velocity; (6) endothelial function and (7) daily life positive and negative affect. Our results are expected to have both mechanistic and public health implications regarding brain–body interactions in the context of cardiovascular health.

Ethics and dissemination

Ethical approval has been obtained from the University of Pittsburgh Institutional Review Board (IRB ID: 19020218). This study will comply with the NIH Data Sharing Policy and Policy on the Dissemination of NIH-Funded Clinical Trial Information and the Clinical Trials Registration and Results Information Submission rule.

Trial registration number

NCT03841669.

Investigating the ability to adhere to cardiometabolic medications with different properties: a retrospective cohort study of >500 000 patients in the USA

Por: Lauffenburger · J. C. · Tesfaye · H. · Solomon · D. H. · Antman · E. M. · Glynn · R. J. · Lee · S. B. · Tong · A. · Choudhry · N. K.
Objective

Poor medication adherence remains highly prevalent and adversely affects health outcomes. Patients frequently describe properties of the pills themselves, like size and shape, as barriers, but this has not been evaluated objectively. We sought to determine the extent to which oral medication properties thought to be influential translate into lower objectively-measured adherence.

Design

Retrospective cohort study.

Setting

US nationwide commercial claims database, 2016–2019.

Participants

Among patients initiating first-line hypertension, diabetes or hyperlipidaemia treatment based on clinical guidelines, we measured pill size, shape, colour and flavouring, number of pills/day and fixed-dose combination status as properties.

Outcome measures

Outcomes included discontinuation after the first fill (ie, never filling again over a minimum of 1-year follow-up) and long-term non-adherence (1-year proportion of days covered

Results

Across 604 323 patients, 14.6% discontinued after filling once (ie, were non-persistent), and 54.0% were non-adherent over 1-year follow-up. Large pill size was associated with non-adherence, except for thiazides (eg, metformin adjusted OR (aOR): 1.12, 95% CI: 1.06 to 1.18). Greater pill burden was associated with a higher risk of non-adherence across all classes (eg, metformin aOR: 1.58, 95% CI: 1.53 to 1.64 for two pills/day). Taking less than one pill/day was also associated with higher risk of non-adherence and non-persistence (eg, non-persistence statin aOR: 1.29, 95% CI: 1.20 to 1.38). Pill shape, colour, flavouring and combination status were associated with mixed effects across classes.

Conclusions

Pill burden and pill size are key properties affecting adherence for almost all classes; others, like size and combination, could modestly affect medication adherence. Clinical interventions could screen patients for potential intolerance to medication and potentially implement more convenient dosing schedules.

Effects of Prebriefing Using Online Team-Based Learning in Advanced Life Support Education for Nurses

imageAn effective prebriefing strategy is needed that can improve the learning outcomes of nurses in advanced life support education. This study aimed to identify the effects of prebriefing with online team-based learning on hospital nurses' knowledge, performance, and self-efficacy in advanced life support education. A nonequivalent control group pretest-posttest design was adopted. Nurses in the experimental group (n = 26) participated in prebriefing using online team-based learning followed by self-directed learning, whereas nurses in the control group (n = 27) experienced only self-directed learning before advanced life support education. Wilcoxon signed-ranks tests were used to identify the posttest-pretest differences of the study variables in each group. Both groups showed improved knowledge, individual performance, and self-efficacy after the education. Nurses in the experimental group reported higher self-efficacy scores compared with those in the control group. There were no differences between the experimental and control groups in knowledge, individual performances, or team performance. Online team-based learning as a prebriefing modality resulted in greater improvements in self-efficacy in advanced life support education.
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