Nursing students' clinical judgment skills in simulation and clinical placement: a comparison of student self-assessment and evaluator assessment.

BACKGROUND: Clinical judgment is an important and desirable learning outcome in nursing education. Students must be able to self-assess their clinical judgment in both the simulation and clinical settings to identify knowledge gaps and further improve and develop their skills. Further investigation is needed to determine the optimal conditions for and reliability of this self-assessment. AIMS: This study aimed to compare the same group of students' self-assessment of clinical judgment with an evaluator's assessment in both simulation and clinical settings. The study further aimed to investigate whether the Dunning-Kruger effect is present in nursing students' self-assessment of clinical judgment. METHODS: The study applied a quantitative comparative design. It was conducted in two learning settings: an academic simulation-based education course, and a clinical placement course in an acute care hospital. The sample consisted of 23 nursing students. The Lasater Clinical Judgment Rubric was used to collect data. The scores were compared using a t-test, intraclass correlation coefficient, Pearson's correlation coefficient, and Bland-Altman plots. The Dunning-Kruger effect was investigated using linear regression analysis and a scatter plot. RESULTS: The results showed an inconsistency between student self-assessment and evaluator assessment of clinical judgment in both simulation-based education and clinical placement. Students overestimated their clinical judgment when compared to the more experienced evaluator's assessment. Differences between students' scores and the evaluator's scores were larger when the evaluator's scores were low, indicating the presence of the Dunning-Kruger effect. CONCLUSION: It is vital to acknowledge that student self-assessment alone may not be a reliable predictor of a student's clinical judgment. Students who had a lower level of clinical judgment were likely to be less aware that this was the case. For future practice and research, we recommend a combination of student self-assessment and evaluator assessment to provide a more realistic view of students' clinical judgment skills.

Collagen Density Modulates the Immunosuppressive Functions of Macrophages.

Tumor-associated macrophages (TAMs) support tumor growth by suppressing the activity of tumor-infiltrating T cells. Consistently, TAMs are considered a major limitation for the efficacy of cancer immunotherapy. However, the molecular reason behind the acquisition of an immunosuppressive TAM phenotype is not fully clarified. During tumor growth, the extracellular matrix (ECM) is degraded and substituted with a tumor-specific collagen-rich ECM. The collagen density of this tumor ECM has been associated with poor patient prognosis but the reason for this is not well understood. In this study, we investigated whether the collagen density could modulate the immunosuppressive activity of TAMs. The murine macrophage cell line RAW 264.7 was three-dimensionally cultured in collagen matrices of low and high collagen densities mimicking healthy and tumor tissue, respectively. Collagen density did not affect proliferation or viability of the macrophages. However, whole-transcriptome analysis revealed a striking response to the surrounding collagen density, including the regulation of immune regulatory genes and genes encoding chemokines. These transcriptional changes were shown to be similar in murine bone marrow-derived macrophages and TAMs isolated from murine tumors. Strikingly, coculture assays with primary T cells showed that macrophages cultured in high-density collagen were less efficient at attracting cytotoxic T cells and capable of inhibiting T cell proliferation more than macrophages cultured in low-density collagen. Our study demonstrates that a high collagen density can instruct macrophages to acquire an immunosuppressive phenotype. This mechanism could reduce the efficacy of immunotherapy and explain the link between high collagen density and poor prognosis.

A nutritional intervention program improves the nutritional status of geriatric patients at nutritional risk-a randomized controlled trial.

OBJECTIVES: To investigate the effect of a nutrition intervention program for geriatric nutritional at-risk patients. DESIGN: A randomized controlled trial. SETTING: Department of geriatric medicine in a university hospital and in the primary healthcare sector, Copenhagen. SUBJECTS: Geriatric patients ( N = 144) at nutritional risk. INTERVENTION: The intervention consisted of an individual dietary plan for home, including pre-discharge advice on nutritional intake, combined with three follow-up visits after discharge (one, four, and eight weeks). MAIN MEASURES: Change in body weight, Barthel Index, hand-grip strength and self-rated health from baseline (discharge) to three months after discharge, readmission, and mortality (90 and 120 days). RESULTS: The mean (SD) age in total sample was 87.2 (6.2) years. Sample size in the intervention group (IG) was N = 72, and in the control group (CG), N = 72. IG had a mean (SD) weight gain of 0.9 (4.2) kg compared to a weight loss of 0.8 (3.6) kg in the CG ( P = 0.032). In addition, an improvement in self-rated health was seen in the IG compared to CG (IG: 23 (47%) vs. CG: 12 (24%); P = 0.021). No significant difference between groups was found in functional status, mortality, or readmission rates. CONCLUSION: An individual dietary plan based on everyday food, combined with three follow-up visits (one, four, and eight weeks) after discharge, led to an improvement in nutritional status and self-rated health in geriatric patients.

Changes in nursing students' self-reported professional competence in simulation-based education and clinical placement: A longitudinal study.

BACKGROUND: A primary learning outcome for nursing students is to achieve the professional competence necessary to provide safe and high-quality care in complex and specialized health services. Simulation-based education (SBE) and clinical placement are two educational settings in which nursing students' professional competence can be facilitated as a learning outcome. OBJECTIVES: The study objectives were to investigate changes in nursing students' self-reported professional competence in SBE and clinical placement and the transfer of this competence from SBE to clinical placement. We also aimed to investigate which competence areas were highest and lowest rated. DESIGN: A quantitative longitudinal survey design was applied. SETTINGS: The study took place from May 2019 to January 2020 in a simulation center at a Norwegian university and clinical placement in hospital units. PARTICIPANTS: Bachelor nursing students (N = 38) in their second and third year of a four-year part-time Norwegian nursing bachelor's degree program. METHODS: The Nurse Professional Scale Short Form (NPC Scale-SF) consisting of six competence areas was used to measure nursing students' self-reported professional competence across four time points. Paired sample t-test and descriptive statistics were used to analyse data. RESULTS: For changes in the longitudinal perspective, students' self-reported professional competence increased significantly. In the transfer perspective, from SBE to clinical placement, four competence areas declined significantly. Value-based nursing care were scored highest, whilst Development, leadership, and organization of nursing care were scored lowest score at all time-points. CONCLUSIONS: Findings indicate that nursing students' self-reported professional competence increased in the longitudinal perspective. Supporting students in transfer of professional competence should be addressed in SBE and clinical placement, whilst nursing education should be strengthened concerning development, leadership, and organization of nursing care.

Manual closed-loop insulin delivery in children and adolescents with type 1 diabetes: a phase 2 randomised crossover trial.

BACKGROUND: Closed-loop systems link continuous glucose measurements to insulin delivery. We aimed to establish whether closed-loop insulin delivery could control overnight blood glucose in young people. METHODS: We undertook three randomised crossover studies in 19 patients aged 5-18 years with type 1 diabetes of duration 6.4 years (SD 4.0). We compared standard continuous subcutaneous insulin infusion and closed-loop delivery (n=13; APCam01); closed-loop delivery after rapidly and slowly absorbed meals (n=7; APCam02); and closed-loop delivery and standard treatment after exercise (n=10; APCam03). Allocation was by computer-generated random code. Participants were masked to plasma and sensor glucose. In APCam01, investigators were masked to plasma glucose. During closed-loop nights, glucose measurements were fed every 15 min into a control algorithm calculating rate of insulin infusion, and a nurse adjusted the insulin pump. During control nights, patients' standard pump settings were applied. Primary outcomes were time for which plasma glucose concentration was 3.91-8.00 mmol/L or 3.90 mmol/L or lower. Analysis was per protocol. This trial is registered, number ISRCTN18155883. FINDINGS: 17 patients were studied for 33 closed-loop and 21 continuous infusion nights. Primary outcomes did not differ significantly between treatment groups in APCam01 (12 analysed; target range, median 52% [IQR 43-83] closed loop vs 39% [15-51] standard treatment, p=0.06;

Childhood social circumstances and body mass index in adult life: the Metropolit 1953 Danish male birth cohort.

AIMS: To examine whether father's social class was associated with body mass index (BMI) at age 20 and 50 years in a cohort of men born in 1953 and to explore the role of birth weight, cognitive function (IQ), and educational status in these relationships. METHODS: We used data from the Metropolit cohort which includes 11,532 Danish men born in 1953 with information on father's socioeconomic position (SEP) at participant's birth and assessments of height, weight, cognitive performance, and education at age 20. In 2004, 6292 of these men participated in a follow-up survey on health and behaviour. Linear and logistic regression were used to investigate the association of father's social class with BMI among the 5117 men with complete information on all variables. RESULTS: Between age 20 and 50, mean BMI increased from 21.4 to 26.1 kg/m(2), while the prevalence of overweight (BMI ≥25 kg/m(2)) increased from 8.1 to 57.8%. Men of fathers who were skilled or unskilled workers had higher odds of being overweight (OR = 1.32, 95% CI 1.13-1.53) or often obese (OR = 1.28, 95% CI 1.03-1.60) at age 50 years compared to those with fathers being self-employed, employee, or civil servants when adjusted for the other socially correlated indicators of impaired childhood development. In the linear regression analyses, mean BMI at both age 20 and 50 were around 0.3 kg/m(2) higher in men with fathers from working class compared to those self-employed, employee, or civil servants. CONCLUSIONS: This study supports that among men, father's SEP influences the development of obesity later in adult life.

Increased rate of home-death among patients in a Danish general practice.

INTRODUCTION: Most terminally ill patients wish to die at home. The aim of this study was to investigate whether the home-death rate was higher than the Danish average in a general practice with a systematic approach to palliative care and to examine if the number of clinical contacts between the practice and its patients was associated with place of death. METHODS: In a large (6,500 patients) four-doctor general practice outside of Copenhagen, adult patients who died between 2015 and 2018 were identified. Accidental or suicidal deaths were excluded. Data on age, gender, diagnosis, place of death, the primarily responsible physician and the number of clinical contacts during the last four months of life were retrieved from the patients' medical files. RESULTS: A total of 201 patients were included (mean age at time of death = 82.4 years) of whom 99 patients (49%) died at home/in a nursing home and 93 patients (46%) died in hospital/hospice. Compared with regional data, the proportion of home-death was higher in the study population (national (43%, p = 0.09), regional (39%, p = 0.01), municipal (44%, p = 0.18)). The odds of death in hospital were nine times higher if no GP was directly involved in the palliative phase (p = 0.001). However, no significant difference in the number of contacts with the GP between patients who died at home or in hospital/hospice was observed. CONCLUSIONS: The proportion of home-death in the studied general practice was higher than home-death recorded in regional data. Having a GP involved in the palliative phase was associated with home-death independently of the number of GP contacts in the trajectory. FUNDING: The study received funding from the PLU-Fund (Praktiserende Lægers Uddannelsesfond). TRIAL REGISTRATION: not relevant.

Collagen density regulates the activity of tumor-infiltrating T cells.

BACKGROUND: Tumor progression is accompanied by dramatic remodeling of the surrounding extracellular matrix leading to the formation of a tumor-specific ECM, which is often more collagen-rich and of increased stiffness. The altered ECM of the tumor supports cancer growth and metastasis, but it is unknown if this effect involves modulation of T cell activity. To investigate if a high-density tumor-specific ECM could influence the ability of T cells to kill cancer cells, we here studied how T cells respond to 3D culture in different collagen densities. METHODS: T cells cultured in 3D conditions surrounded by a high or low collagen density were imaged using confocal fluorescent microscopy. The effects of the different collagen densities on T cell proliferation, survival, and differentiation were examined using flow cytometry. Cancer cell proliferation in similar 3D conditions was also measured. Triple-negative breast cancer specimens were analyzed for the number of infiltrating CD8+ T cells and for the collagen density. Whole-transcriptome analyses were applied to investigate in detail the effects of collagen density on T cells. Computational analyses were used to identify transcription factors involved in the collagen density-induced gene regulation. Observed changes were confirmed by qRT-PCR analysis. RESULTS: T cell proliferation was significantly reduced in a high-density matrix compared to a low-density matrix and prolonged culture in a high-density matrix led to a higher ratio of CD4+ to CD8+ T cells. The proliferation of cancer cells was unaffected by the surrounding collagen-density. Consistently, we observed a reduction in the number of infiltrating CD8+ T-cells in mammary tumors with high collagen-density indicating that collagen-density has a role in regulating T cell abundance in human breast cancer. Whole-transcriptome analysis of 3D-cultured T cells revealed that a high-density matrix induces downregulation of cytotoxic activity markers and upregulation of regulatory T cell markers. These transcriptional changes were predicted to involve autocrine TGF-ß signaling and they were accompanied by an impaired ability of tumor-infiltrating T cells to kill autologous cancer cells. CONCLUSIONS: Our study identifies a new immune modulatory mechanism, which could be essential for suppression of T cell activity in the tumor microenvironment.

High syndecan-1 levels in acute myeloid leukemia are associated with bleeding, thrombocytopathy, endothelial cell damage, and leukocytosis.

The risk of hemorrhage is influenced by multiple factors in acute myeloid leukemia (AML). We investigated whether hemorrhage in AML patients was associated with endothelial perturbation, potentially caused by thrombocytopenia, platelet dysfunction and leukocytosis. Biomarkers of endothelial perturbation, coagulation and platelet activation were analyzed in 49 AML patients, along with previously collected data on bleeding status and platelet activation markers. High levels of syndecan-1, a marker of endothelial glycocalyx degradation, were associated with bleeding, impaired platelet function, higher age, endothelial cell activation and damage, and leukocytosis. We suggest that platelet dysfunction and leukocytosis in AML causes endothelial perturbation.

Comparison of images from digital intraoral receptors and cone beam computed tomography scanning for detection of voids in root canal fillings: an in vitro study using micro-computed tomography as validation.

OBJECTIVE: To compare the diagnostic value of six intraoral digital receptors and a cone beam computed tomography scanning system for detection of voids in root fillings. METHODS: Sixty-seven root-filled roots with oval and ribbon-shaped canals were included. Three standardized radiographic examinations were performed for each root with six intraoral digital receptors. Further, the roots were examined using CBCT. Four observers measured the extension of voids in all images. The true extension of voids was recorded in cross-sectional images from micro-computed tomography scans (micro-CT). The proportion of voids observed in the radiographic image validated against micro-CT was calculated for each system. RESULTS: All intraoral receptors underestimated the extension of voids, and few false positives were recorded. CBCT resulted in a higher proportion of correctly observed voids, but with several false-positive recordings. CONCLUSIONS: The diagnostic value differed little among the six intraoral systems. CBCT overestimated in many cases the proportion of voids in root fillings.

Correlations and agreement between delta-9-tetrahydrocannabinol (THC) in blood plasma and timeline follow-back (TLFB)-assisted self-reported use of cannabis of patients with cannabis use disorder and psychotic illness attending the CapOpus randomized clinical trial.

AIMS: To assess correlations and agreement between timeline follow-back (TLFB)-assisted self-report and blood samples for cannabis use. DESIGN: Secondary analysis of a randomized trial. SETTING: Copenhagen, Denmark. PARTICIPANTS: One hundred and three patients from the CapOpus trial with cannabis use disorder and psychosis, providing 239 self-reports of cannabis use and 88 valid blood samples. MEASUREMENTS: Delta-9-tetrahydrocannabinol (THC), 11-hydroxy-delta-9-tetrahydrocannabinol (11-OH-THC) and 11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid (THC-COOH) detected in plasma using high-performance liquid chromatography with tandem mass spectrometry detection. Self-report of cannabis-use last month by TLFB. Pearson's r, sensitivity and specificity calculated as measures of correlation or agreement. FINDINGS: Correlations were strong; r = 0.75 for number of days and r = 0.83 for number of standard joints in the preceding month when excluding outliers. Including outliers, coefficients were moderate to strong (r = 0.49). There were differences in subgroups, mainly inconsistent, depending on inclusion or exclusion of outliers. Sensitivity and specificity for TLFB detecting the presence or absence of cannabis use were 95.7% [95% confidence interval (CI) 88.0-99.1%) and 72.2% (95% CI 46.5-90.3%), respectively. Using 19 days as cut-off on TLFB, they were 94.3% (95% CI 86.0-98.4%) and 94.4% (95% CI 72.2-99.9%), respectively. Area under the receiver operating characteristic (ROC) curve was 0.96. CONCLUSIONS: Timeline follow-back (TLFB)-assisted self-report of cannabis use correlates highly with plasma-delta-9-tetrahydrocannabinol in patients with comorbid cannabis use disorder and psychosis. Sensitivity and specificity of timeline follow-back appear to be optimized with 19 days as the cut-off point. As such, timeline follow-back may be superior to analysis of blood when going beyond 19 days of recall.

Automated overnight closed-loop glucose control in young children with type 1 diabetes.

BACKGROUND: We evaluated the effectiveness of automated overnight closed-loop (AOCL) insulin delivery and the influence of timing of initiation on glucose control overnight in young children with type 1 diabetes (T1D). METHODS: Eight children with T1D (four boys, four girls) (mean ± SD: 9.4 ± 2.7 years old; body mass index, 18.3 ± 2.3 kg/m(2); duration of diabetes, 3.9 ± 2.5 years; total daily insulin dose, 0.7 ± 0.1 U/kg/day; glycosylated hemoglobin, 7.9 ± 0.9%) were studied in a clinical research facility on two separate occasions. Subjects had a meal at 18:00 (77 ± 8 g of carbohydrate [CHO]) and snack at 21:00 (21 ± 6 g of CHO), both accompanied by a prandial insulin bolus. In random order, AOCL was started at 18:00 or 21:00 h and ran until 08:00 h the next day. Subcutaneous continuous glucose monitoring data were fed automatically into the model predictive control algorithm. Calculated subcutaneous insulin infusion rates were sent wirelessly to an insulin pump. Plasma glucose was measured to assess closed-loop performance. RESULTS: No rescue CHOs were administered. Time spent with plasma glucose in the target range from 3.9 to 8.0 mmol/L was 50.7% (29.0%, 72.2%), and it did not differ on the two occasions: median (interquartile range), 42% (18%, 64%) versus 58% (32%, 79%) (P = 0.161). Time when plasma glucose was above 8.0 mmol/L (42% [25%, 82%] vs. 29% [14%, 64%], P = 0.093), time below 3.9 mmol/L (0% [0%, 11%] vs. 8% [0%, 17%], P = 0.500), low blood glucose index (0.1 [0.0, 2.5] vs. 1.7 [0.4, 3.3], P = 0.380), plasma glucose at the start of AOCL (12.5 ± 2.7 vs. 11.6 ± 4.2 mmol/L, P = 0.562), and mean overnight plasma glucose (8.3 ± 2.1 vs. 7.5 ± 2.2 mmol/L, P = 0.246) were also similar. CONCLUSIONS: AOCL is feasible in young children with T1D. Comparable results were obtained when closed-loop was initiated at 18:00 or 21:00 h.

Effect of delay on measurement of blood glucose levels in young subjects with type 1 diabetes.

We investigated the effect of a 3-h time-lag between blood sampling and glucose measurement in type 1 diabetes. Blood glucose decreased by 0.47 mmol/L despite samples being collected in fluoride tubes and placed on ice. The extent of reduction differs among subjects, prevailing blood glucose and time-of-day of sample withdrawal.

Design paper: The CapOpus trial: a randomized, parallel-group, observer-blinded clinical trial of specialized addiction treatment versus treatment as usual for young patients with cannabis abuse and psychosis.

BACKGROUND: A number of studies indicate a link between cannabis-use and psychosis as well as more severe psychosis in those with existing psychotic disorders. There is currently insufficient evidence to decide the optimal way to treat cannabis abuse among patients with psychosis. OBJECTIVES: The major objective for the CapOpus trial is to evaluate the additional effect on cannabis abuse of a specialized addiction treatment program adding group treatment and motivational interviewing to treatment as usual. DESIGN: The trial is designed as a randomized, parallel-group, observer-blinded clinical trial. Patients are primarily recruited through early-psychosis detection teams, community mental health centers, and assertive community treatment teams. Patients are randomized to one of two treatment arms, both lasting six months: 1) specialized addiction treatment plus treatment as usual or 2) treatment as usual. The specialized addiction treatment is manualized and consists of both individual and group-based motivational interviewing and cognitive behavioral therapy, and incorporates both the family and the case manager of the patient.The primary outcome measure will be changes in amount of cannabis consumption over time. Other outcome measures will be psychosis symptoms, cognitive functioning, quality of life, social functioning, and cost-benefit analyses. TRIAL REGISTRATION: ClinicalTrials.gov NCT00484302.