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Robustness of radiomic features in <sup>123</sup>I-ioflupane-dopamine transporter single-photon emission computer tomography scan

by Viktor Laskov, David Rothbauer, Hana Malikova

Radiomic features are usually used to predict target variables such as the absence or presence of a disease, treatment response, or time to symptom progression. One of the potential clinical applications is in patients with Parkinson’s disease. Robust radiomic features for this specific imaging method have not yet been identified, which is necessary for proper feature selection. Thus, we are assessing the robustness of radiomic features in dopamine transporter imaging (DaT). For this study, we made an anthropomorphic head phantom with tissue heterogeneity using a personal 3D printer (polylactide 82% infill); the bone was subsequently reproduced with plaster. A surgical cotton ball with radiotracer (123I-ioflupane) was inserted. Scans were performed on the two-detector hybrid camera with acquisition parameters corresponding to international guidelines for DaT single photon emission tomography (SPECT). Reconstruction of SPECT was performed on a clinical workstation with iterative algorithms. Open-source LifeX software was used to extract 134 radiomic features. Statistical analysis was made in RStudio using the intraclass correlation coefficient (ICC) and coefficient of variation (COV). Overall, radiomic features in different reconstruction parameters showed a moderate reproducibility rate (ICC = 0.636, p 0.9, p

Comparing didactic approaches for practical skills learning in Scandinavian nursing simulation centres: A qualitative comparative study

Abstract

Aim

To explore and compare the didactic approaches to practical skills learning at simulation centres in Scandinavian universities and university colleges.

Background

Academic simulation centres are an important arena for learning practical nursing skills which are essential to ensure competent performance regarding patient safety and quality of care. Knowledge of didactic approaches to enhance learning is essential in promoting the provision and retention of students' practical nursing skills. However, research on didactical approaches to practical nursing skills learning is lacking.

Design

A qualitative comparative design was used.

Methods

During November and December 2019, interviews were conducted with a total of 37 simulation centre directors or assistant directors, each of whom possessed in-depth knowledge of practical skills in teaching and learning. They represented bachelor nursing education in Denmark, Norway and Sweden. A qualitative deductive content analysis was conducted.

Results

The results revealed all five predetermined didactical components derived from the didactical relationship model. Twenty-two corresponding categories that described a variation in didactic approaches to practical skills learning in Scandinavian nursing simulation centres were identified. The didactical components of Learning process revealed mostly similarities, Setting mostly differences and Assessment showed only differences in didactic approaches.

Conclusion

Although various didactic approaches were described across the countries, no common approach was found. Nursing educational institutions are encouraged to cooperate in developing a shared understanding of how didactic approaches can enhance practical skills learning.

Implications for Profession and/or Patient Care

Cross-country comparisons of practical nursing skills learning in Scandinavian countries highlight the importance of educator awareness concerning the impact diverse didactic approaches may have on competent performance in nursing education. Competent performance is pivotal for ensuring patient safety and the provision of high-quality care.

Patient or Public Contribution

No Patient or Public Contribution.

Reporting Method

This study followed the Consolidated Criteria for Reporting Qualitative Research reporting guidelines.

Out‐of‐pocket expenditure among patients with diabetic foot ulcer in a tertiary care hospital of south India: A cross‐sectional study

Abstract

Diabetic foot ulcer is a debilitating complication of long-standing diabetes mellitus. Patients lose their earning potential, face repeated hospitalizations, and are forced to bear heavy treatment costs. This places an enormous financial burden on the patients and their families. This study seeks to ascertain the out-of-pocket expenditure among these patients and correlate it with their risk factor profile. In this hospital-based cross-sectional study, a total of 154 patients with diabetic foot ulcers or amputations have been studied with an elaborate patient questionnaire and relevant clinical examinations. The costs incurred and the risk factors of the patients were analyzed for statistical association. The median total annual out-of-pocket expenditure for the management of diabetic foot ulcers among the study participants was found to be ₹29 775 (₹9650–₹81 120) ($378.14 [$122.56–$1030.22]). Out of the total expenditure, 58.49% went towards direct medical costs, 5.64% towards direct non-medical costs, and 35.88% for indirect costs. Medications, ulcer dressing and periodic debridement have accounted for 79.26% of direct medical costs. Transportation (61.37%) and patient's loss of income (89.45%) account for the major costs under the direct non-medical and indirect cost categories, respectively. A high ulcer grade and area, long ulcer duration, and past history of ulcers have higher expenditure. Patients seeking treatment from private establishments and those engaged in professional/skilled occupations have higher expenses. Adequate dressing of foot ulcers and proper footwear are associated with lower treatment expenditure. 68.8% of the participants have faced catastrophic expenditure due to treatment costs of diabetic foot ulcers. Adequate glycaemic control and proper foot care are necessary. Patients must seek medical care at the earliest in case of foot ulceration. Clinicians must provide proper wound care, institute effective antibiotics, and manage the complications. Government and insurance schemes are required to alleviate the patients' financial burden.

Low-value MRI of the knee in Norway: a register-based study to identify the proportion of potentially low-value MRIs and estimate the related costs

Por: Hofmann · B. · Havik · V. · Andersen · E. R. · Brandsaeter · I. O. · Kjelle · E.
Objectives

The objective of this study is to investigate the proportion of potentially low-value knee MRI in Norway and to provide an estimate of the related costs.

Design

Register study based on conditional data extraction and analysis of data from Control and Reimbursement of Healthcare Claims registry in Norway.

Setting

MRI in public specialist healthcare with universal health coverage (Norway).

Participants

48 212 MRIs for 41 456 unique patients and 45 946 reimbursement claims.

Outcome measures

Proportion of MRIs of the knee that (1) did not have a relevant tentative diagnosis prior to the knee MRI, (2) did not have a relevant alternative image of the knee before the MRI or (3) did not have a relevant code from the specialist care within 6 months after the MRI, and those that had combinations of 1, 2 and 3. Estimated costs for those that had combinations of 1, 2 and 3.

Results

Very few patients (6.4%) had a relevant diagnosis code or prior imaging examination when having the MRI and only 14.6% got a knee-related diagnosis code from the specialist care within 6 months after the MRI. 21.8% of the patients had knee X-ray, CT or ultrasound within 6 months before the MRI. Between 58% and 85% of patients having knee MRIs in Norway have no relevant examinations or diagnoses six months prior to or after the MRI examination. These examinations are unlikely to benefit patients and they correspond to between 24 108 and 35 416 MRIs at a cost of 6.7–9.8 million per year.

Conclusion

A substantial proportion of MRIs of the knee in Norway have no relevant examinations or diagnoses before or after the MRI and are potentially of low value. Reducing low-value MRIs could free resources for high-value imaging, reduce waiting times, improve the quality of care and increase patient safety and professional integrity.

Nursing standards, language and age as variables associated with clinical competence for nurses in long‐term care facilities: A cross‐sectional study

Abstract

Aim

To identify and examine the explanatory variables associated with clinical competence among registered nurses (RNs) and practical nurses (PNs) working in long-term care facilities (LTCF) for older adults.

Design and Methods

This was a cross-sectional study. The competence test, ‘the Ms. Olsen test’, was used for data collection. A convenience sample of 337 nursing staff working in LTCFs for older adults was selected between December 2020 and January 2021. A quantitative, non-experimental approach with multiple linear regression analysis examined the explanatory variables associated with clinical competence and the outcome variables.

Results

The main findings of the linear regression analysis show that the nursing staff's increasing age, use of Swedish as a working language and use of the Finnish nursing practice standards had statistically significant relationships with clinical competence among the participating nursing staff.

Conclusion

This is the first knowledge test that has been developed to test nursing staff's clinical competence in elderly care. In this study in Finland, the highest clinical competence was among the nursing staff who were Swedish-speaking RNs working in institutional care homes caring for patients according to national practice standards.

Implications

These results may be useful to nursing staff and managers working in elderly care to understand the explanatory variables associated with clinical competence in elderly care in Finland and in bilingual settings. The study highlights the importance of using national nursing standards in elderly nursing care. Knowing the explanatory variables associated with clinical competence can provide guidance for the further education of nursing staff in these settings.

Impact

Caring according to national practice standards and caring for severely ill patients are associated with clinical competence.

Reporting Method

The authors adhered to the EQUATOR network guidelines Appendix S1 STROBE to report observational cross-sectional studies.

Patient or Public Contribution

Registered and PNs completed a questionnaire for the data collection.

Physical activity and cognitive function in adults born very preterm or with very low birth weight–an individual participant data meta-analysis

by Kristina Anna Djupvik Aakvik, Silje Dahl Benum, Marjaana Tikanmäki, Petteri Hovi, Katri Räikkönen, Sarah L. Harris, Lianne J. Woodward, Brian A. Darlow, Marit S. Indredavik, Stian Lydersen, Paul Jarle Mork, Eero Kajantie, Kari Anne I. Evensen

Objective

Individuals born very preterm ( Study design

Cohorts with data on physical activity and cognitive function in adults born very preterm/very low birth weight and term-born controls were recruited from the Research on European Children and Adults Born Preterm, and the Adults Born Preterm International Collaboration Consortia. A systematic literature search was performed in PubMed and Embase.

Results

Five cohorts with 1644 participants aged 22–28 years (595 very preterm/very low birth weight and 1049 controls) were included. Adults born very preterm/very low birth weight reported 1.11 (95% CI: 0.68 to 1.54) hours less moderate to vigorous physical activity per week than controls, adjusted for cohort, age and sex. The difference between individuals born very preterm/very low birth weight and controls was larger among women than among men. Neither intelligence quotient nor self-reported executive function mediated the association between very preterm/very low birth weight and moderate to vigorous physical activity. Results were essentially the same when we excluded individuals with neurosensory impairments.

Conclusion

Adults born very preterm/very low birth weight, especially women, reported less moderate to vigorous physical activity than their term-born peers. Cognitive function did not mediate this association. Considering the risk of adverse health outcomes among individuals born preterm, physical activity could be a target for intervention.

Correlation between allostatic load index and cumulative mortality: a register-based study of Danish municipalities

Por: Bruun-Rasmussen · N. E. · Napolitano · G. · Bojesen · S. E. · Ellervik · C. · Holmager · T. L. F. · Rasmussen · K. · Lynge · E.
Objectives

The aim of this study was to examine population-based allostatic load (AL) indices as an indicator of community health across 14 municipalities in Denmark.

Design

Register-based study.

Setting

Data derived from: the Lolland-Falster Health Study, the Copenhagen General Population Study and the Danish General Suburban Population Study. Nine biomarkers (systolic blood pressure, diastolic blood pressure, pulse rate, total serum cholesterol, high-density lipoprotein cholesterol, waist-to-hip ratio, triglycerides, C-reactive protein and serum albumin) were divided into high-risk and low-risk values based on clinically accepted criteria, and the AL index was defined as the average between the nine values. All-cause mortality data were obtained from Statistics Denmark.

Participants

We examined a total of 106 808 individuals aged 40–79 years.

Primary outcome measure

Linear regression models were performed to investigate the association between mean AL index and cumulative mortality risk.

Results

Mean AL index was higher in men (range 2.3–3.3) than in women (range 1.7–2.6). We found AL index to be strongly correlated with the cumulative mortality rate, correlation coefficient of 0.82. A unit increase in mean AL index corresponded to an increase in the cumulative mortality rate of 19% (95% CI 13% to 25%) for men, and 16% (95% CI 8% to 23%) for women but this difference was not statistically significant. The overall mean increase in cumulative mortality rate for both men and women was 17% (95% CI 14% to 20%).

Conclusions

Our findings indicate the population-based AL index to be a strong indicator of community health, and suggest identification of targets for reducing AL.

Chronotherapy for patients with a depressive episode treated in a public outpatient mental healthcare clinic in Norway: protocol for a randomised controlled trial

Por: Ramfjord · L. S. · Kahn · N. · Langsrud · K. · Halvorsen · J. O. O. · Morken · G. · Saksvik · S. · Engvik · L. S. S. · Lydersen · S. · Kallestad · H.
Introduction

Depression is highly prevalent in outpatients receiving treatment for mental disorders. Treatment as usual (TAU) usually consists of either psychotherapy and/or antidepressant medication and often takes several weeks before clinical effect. Chronotherapy, consisting of sleep deprivation, sleep-wake phase advancement and stabilisation, and light therapy, is a possible addition to TAU that may decrease the time to treatment response. This randomised controlled trial will examine the benefits of adding chronotherapy to TAU compared with TAU alone.

Methods and analysis

The trial will include 76 participants with a depressive episode who initiate outpatient treatment at a secondary mental healthcare outpatient clinic at St. Olavs University Hospital. Participants will be randomly allocated 1:1 to either chronotherapy in addition to TAU or TAU alone. Assessments will be performed at baseline, day 3, day 4, day 7, day 14 and weeks 4, 8, 24 and 52, in addition to longer-term follow ups. The main outcome is difference in levels of depressive symptoms after week 1 using the Inventory of Depressive Symptomatology Self-Report. Secondary outcomes include levels of depressive symptoms at other time points, as well as anxiety, health-related quality of life and sleep assessed through subjective and objective measures.

Ethics and dissemination

The study protocol has been approved by the Regional Committee for Medical Research Ethics Central Norway (ref: 480812) and preregistered at ClinicalTrials.gov (ref: NCT05691647). Results will be published via peer-reviewed publications, presentations at research conferences and presentations for clinicians and other relevant groups. The main outcomes will be provided separately from exploratory analysis.

Trial registration number

NCT05691647.

All-cause and cause-specific mortality among individuals imprisoned for driving under the influence of alcohol and drugs in Norway (2000-2016): a retrospective cohort study

Por: Jamt · R. E. G. · Bukten · A. · Stavseth · M. R. · Bogstrand · S. T. · Tverborgvik · T.
Aims

To describe all-cause and cause-specific mortality and to investigate factors associated with mortality among individuals imprisoned for driving under the influence (DUI) of alcohol and psychoactive drugs in the Norwegian prison population.

Design

Retrospective cohort study. The Norwegian prison registry was linked to the Norwegian Cause of Death Registry (2000–2016).

Setting

Norway.

Participants/cases

The cohort consisted of 96 856 individuals imprisoned in Norway over a 17-year period obtained from the Norwegian prison registry.

Primary and secondary outcome measures

Adjusted ORs (aOR) with 95% CI were calculated for death due to any, natural and unnatural causes of death. Analyses were stratified according to DUI convictions: no DUI convictions, only DUI convictions (DUI only), DUI and at least one other drug and alcohol conviction (DUI drug), and DUI and at least one conviction other than drug and alcohol conviction (DUI other).

Results

In total, 29.3% individuals had one or more imprisonments for DUI. The risk of all-cause mortality was elevated for those convicted for DUI, but only in combination with other types of crimes (DUI drug: aOR=1.5, 95% CI 1.4 to 1.6, DUI other: aOR=1.2, 95% CI 1.1 to 1.4). The risk of death from natural causes was significantly elevated for DUI drug (aOR: 1.8, 95% CI 1.6 to 2.0) and for DUI other (aOR=1.3, 95% CI 1.1 to 1.6). The risk of death from unnatural causes was lower for DUI only (aOR=0.8, 95% CI 0.7 to 0.9) and elevated for DUI drug (aOR=1.5, 95% CI 1.3 to 1.6).

Conclusions

The risk of all-cause mortality was significantly elevated for those convicted of DUI, but only in combination with other types of crimes.

Thinking strategies used by registered nurses during drug administration in nursing homes—An observational study

Abstract

Aim

To explore registered nurses' thinking strategies during the drug administration process in nursing homes.

Design

An exploratory qualitative design.

Methods

Eight registered nurses, one male and seven female, in five nursing home wards in Mid-Norway were observed during 15 drug dispensing rounds (175 drug dispensing episodes). Think Aloud sessions with follow-up individual interviews were conducted. The Think Aloud data were analysed using deductive qualitative content analysis based on Marsha Fonteyn's description of 17 thinking strategies. Interview data were used to clarify missing information and validate the content of Think Aloud data.

Results

The registered nurses used all 17 thinking strategies described by Fonteyn, including several variants of each strategy. The three most frequent were ‘providing explanations’, ‘setting priorities’ and ‘drawing conclusions’. In addition, we found two novel thinking strategies that did not fit into Fonteyn's template, which were labelled ‘controlling’ and ‘interacting’. Among all strategies, ‘controlling’ was by far the most used, serving as a means for the registered nurses to stay on track and navigate through various interruptions, while also minimising errors during drug dispensing.

Conclusion

The study highlights the diverse thinking strategies employed by registered nurses in nursing homes during medication administration. The findings emphasise the multifaceted nature of medication administration and underscore the importance of skilled personnel in ensuring medication safety. Recognising the significance of these findings is crucial for maintaining patient well-being and upholding medication safety standards in healthcare settings.

Relevance to Clinical Practice

Understanding the thinking strategies employed by registered nurses can inform training programmes and enhance the clinical judgements of health care professionals involved in medication administration, ultimately leading to improved patient outcomes and reduced medication errors in practice.

Patient or Public Contribution

Patients were involved in this study as recipients of drugs which the nurses distributed during the observations. The patients were involved as a third party and consent to the observations was either given by the patients themselves or relatives in cases where the patient was not competent to consent. No personal information was collected about the patients.

Reporting Method

The reporting of this study adhered to the COREQ checklist.

Barriers to and facilitators of effective management of fever episodes in hospitalised Kenyan children with cancer: protocol for convergent mixed methods study

Por: Nessle · C. N. · Njuguna · F. · Dettinger · J. · Koima · R. · Nyamusi · L. · Kisembe · E. · Kinja · S. · Ndungu · M. · Njenga · D. · Langat · S. · Olbara · G. · Moyer · C. · Vik · T.
Introduction

Febrile neutropenia is an oncological emergency in children with cancer, associated with serious infections and complications. In low-resourced settings, death from infections in children with cancer is 20 times higher than in high-resourced treatment settings, thought to be related to delays in antibiotic administration and management. The barriers to effective management of fever episodes in children with cancer have not previously been described. This convergent mixed-methods study will provide the evidence to develop fever treatment guidelines and to inform their effective implementation in children with cancer at Moi Teaching and Referral Hospital (MTRH), a level 6 referral hospital in western Kenya.

Methods and analysis

Prospective data collection of paediatric patients with cancer with new fever episodes admitted to MTRH will be performed during routine treatment. Clinical variables will be collected from 50 fever episodes, including cancer diagnosis and infectious characteristics of the fever episode, and elapsed time from fever onset to various milestones in the management workflow. Semistructured qualitative interviews with healthcare providers (estimated 20 to reach saturation) will explore the barriers to and facilitators of appropriate management of fever episodes in children with cancer. The interview guide was informed by a theoretical framework and Consolidated Framework for Implementation Research. A mixed-methods analysis use of joint display tables and process mapping will link and integrate the two types of data with meta-inferences.

Ethics and dissemination

Institutional review board approval was obtained from the MTRH (0004273) and the University of Michigan (HUM0225674), and the study was registered with National Commission for Science Technology and Innovation (P/23/22885). Written consent will be obtained from all participants. Results will be formally shared with local and national policy leadership and local end users, presented at relevant national academic conferences and submitted for publication in a peer-reviewed journal.

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