Students experienced near peer-led simulation in physiotherapy education as valuable and engaging: a mixed methods study.

QUESTIONS: What is the student experience of near peer-led simulation in physiotherapy education from the perspectives of students (near peer learners and near peer teachers)? What are their expectations, perceptions and engagement in this as a teaching and learning activity? Are there any short-term benefits? DESIGN: Convergent mixed-methods study. PARTICIPANTS: From a graduate entry Doctor of Physiotherapy course, 111 first-year and 20 second-year students participated. INTERVENTION: Near peer-led simulation was delivered within first-year cardiorespiratory, musculoskeletal and neurological physiotherapy curricula and as a precursor to second-year clinical placements. First-year students were near peer learners. Second-year students were near peer teachers and the simulated patients. OUTCOME MEASURES: Focus groups, pre/post-simulation questionnaires and direct observation. Data were triangulated and presented in overall themes. RESULTS: Five themes emerged: near peer-led simulation improved the students' confidence and the opportunity to make mistakes in a supportive and safe environment was valued; peer feedback was an integral part of the learning process that enriched the learning experience; the authenticity and realism created seriousness, promoted engagement and facilitated perceived knowledge transfer; there were benefits for learning for both peer learners and peer teachers; and the anticipation and emotional impact was evident. CONCLUSION: Near peer-led simulation was viewed by students as a valuable and engaging activity. Students perceived a broad range of benefits on their learning, especially from peer feedback (giving and receiving) on their performance, and had increased confidence following simulation. Peer-led simulation is an authentic and valuable component of entry-to-practice physiotherapy education.

Physiotherapy and Exercise Management of People Undergoing Surgery for Lung Cancer: A Survey of Current Practice across Australia and New Zealand.

BACKGROUND: Moderate- to high-certainty evidence supports the benefits of pre- and post-operative exercise for people undergoing surgical resection for lung cancer. Despite this, exercise programs are not commonly provided. Previous data regarding exercise practices are a decade old. Therefore, this study aimed to understand current exercise practices in surgical lung cancer care in Australia and New Zealand. METHODS: An online cross-sectional survey of Australian and New Zealand allied health professionals specialising in exercise-based interventions was carried out. Survey development and reporting adhered to CHERRIES and CROSS checklists. Institutions with thoracic surgery departments were invited to participate via email, and additional responses were sought via snowballing. RESULTS: The response rate was 81%, with a total of 70 health services responding. A total of 18 (26%) pre-operative services, 59 (84%) inpatient post-operative services, and 39 (55%) community/outpatient post-operative services were identified. Only eight (11%) services provided a pre-operative exercise program. Half of the respondents referred less than 25% of patients to community/outpatient exercise programs on hospital discharge. Respondents reported that their clinical management was predominantly influenced by established workplace practices and personal experience rather than evidence. CONCLUSIONS: The availability and uptake of pre- and post-operative exercise remain low, and work should continue to make pre/post-operative exercise training usual practice.

Methodological and Clinimetric Evaluation of Inspiratory Respiratory Muscle Ultrasound in the Critical Care Setting: A Systematic Review and Meta-Analysis.

OBJECTIVE: Significant variations exist in the use of respiratory muscle ultrasound in intensive care with no society-level consensus on the optimal methodology. This systematic review aims to evaluate, synthesize, and compare the clinimetric properties of different image acquisition and analysis methodologies. DATA SOURCES: Systematic search of five databases up to November 24, 2021. STUDY SELECTION: Studies were included if they enrolled at least 50 adult ICU patients, reported respiratory muscle (diaphragm or intercostal) ultrasound measuring either echotexture, muscle thickness, thickening fraction, or excursion, and evaluated at least one clinimetric property. Two independent reviewers assessed titles, abstracts, and full text against eligibility. DATA EXTRACTION: Study demographics, ultrasound methodologies, and clinimetric data. DATA SYNTHESIS: Sixty studies, including 5,025 patients, were included with 39 studies contributing to meta-analyses. Most commonly measured was diaphragm thickness (DT) or diaphragm thickening fraction (DTF) using a linear transducer in B-mode, or diaphragm excursion (DE) using a curvilinear transducer in M-mode. There are significant variations in imaging methodology and acquisition across all studies. Inter- and intrarater measurement reliabilities were generally excellent, with the highest reliability reported for DT (ICC, 0.98; 95% CI, 0.94-0.99). Pooled data demonstrated acceptable to excellent accuracy for DT, DTF, and DE to predicting weaning outcome after 48 to 72 hours postextubation (DTF AUC, 0.79; 95% CI, 0.73-0.85). DT imaging was responsive to change over time. Only three eligible studies were available for intercostal muscles. Intercostal thickening fraction was shown to have excellent accuracy of predicting weaning outcome after 48-hour postextubation (AUC, 0.84; 95% CI, 0.78-0.91). CONCLUSIONS: Diaphragm muscle ultrasound is reliable, valid, and responsive in ICU patients, but significant variation exists in the imaging acquisition and analysis methodologies. Future work should focus on developing standardized protocols for ultrasound imaging and consider further research into the role of intercostal muscle imaging.

Prophylactic Postoperative Noninvasive Ventilation in Adults Undergoing Upper Abdominal Surgery: A Systematic Review and Meta-Analysis.

OBJECTIVES: Postoperative pulmonary complications (PPCs) are a leading cause of morbidity and mortality following upper abdominal surgery. Applying either noninvasive ventilation (NIV) or continuous positive airway pressure (CPAP) in the early postoperative period is suggested to prevent PPC. We aimed to assess whether postoperative NIV or CPAP or both prevent PPCs compared with standard care in adults undergoing upper abdominal surgery, including in those identified at higher PPC risk. Additionally, the different interventions used were evaluated to assess whether there is a superior approach. DATA SOURCES: We searched PubMed, Embase' CINAHL, CENTRAL, and Scopus from inception to May 17, 2021. STUDY SELECTION: We performed a systematic search of the literature for randomized controlled trials evaluating prophylactic NIV and/or CPAP in the postoperative period. DATA EXTRACTION: Two authors independently performed study selection and data extraction. Individual study risk of bias was assessed using the PEDro scale, and certainty in outcomes was assessed using the Grading of Recommendations Assessment, Development, and Evaluation framework. DATA SYNTHESIS: We included 17 studies enrolling 6,108 patients. No significant benefit was demonstrated for postoperative NIV/CPAP to reduce PPC (risk ratio [RR], 0.89; 95% CI, 0.78-1.01; very low certainty), including in adults identified at higher PPC risk (RR, 0.91; 95% CI, 0.77-1.07; very low certainty). No intervention approach was identified as superior, and no significant benefit was demonstrated when comparing: 1) CPAP (RR, 0.90; 95% CI, 0.79-1.04; very low certainty), 2) NIV (RR, 0.68; 95% CI, 0.41-1.13; very low certainty), 3) continuous NIV/CPAP (RR, 0.90; 95% CI, 0.77-1.05; very low certainty), or 4) intermittent NIV/CPAP (RR, 0.66; 95% CI, 0.39-1.10; very low certainty) to standard care. CONCLUSIONS: These findings suggest routine provision of either prophylactic NIV or CPAP following upper abdominal surgery may not be effective to reduce PPCs' including in those identified at higher risk.

Effect of a postoperative home-based exercise and self-management programme on physical function in people with lung cancer (CAPACITY): protocol for a randomised controlled trial.

INTRODUCTION: Exercise is important in the postoperative management of lung cancer, yet no strong evidence exists for delivery of home-based programmes. Our feasibility (phase I) study established feasibility of a home-based exercise and self-management programme (the programme) delivered postoperatively. This efficacy (phase II) study aims to determine whether the programme, compared with usual care, is effective in improving physical function (primary outcome) in patients after lung cancer surgery. METHODS AND ANALYSIS: This will be a prospective, multisite, two-arm parallel 1:1, randomised controlled superiority trial with assessors blinded to group allocation. 112 participants scheduled for surgery for lung cancer will be recruited and randomised to usual care (no exercise programme) or, usual care plus the 12-week programme. The primary outcome is physical function measured with the EORTC QLQ c30 questionnaire. Secondary outcomes include health-related quality of life (HRQoL); exercise capacity; muscle strength; physical activity levels and patient reported outcomes. HRQoL and patient-reported outcomes will be measured to 12 months, and survival to 5 years. In a substudy, patient experience interviews will be conducted in a subgroup of intervention participants. ETHICS AND DISSEMINATION: Ethics approval was gained from all sites. Results will be submitted for publications in peer-reviewed journals. TRIAL REGISTRATION NUMBER: ACTRN12617001283369.

A technical and clinical evaluation of a new assay for inhibin A and its use in second trimester Down syndrome screening.

BACKGROUND: The objective of the study was to compare a new AutoDELFIA® Inhibin A kit (B064-102) with the Access Inhibin A kit (A36097) using clinical specimens and to evaluate the AutoDELFIA® Inhibin A assay performance in screening for Down syndrome in the second trimester of pregnancy. METHODS: Using clinical samples, we performed a method comparison between new and existing inhibin A kits and assessed AutoDELFIA® Inhibin A kit precision performance. Normal median values for the second trimester of pregnancy were also determined. Finally, we evaluated the screening performance of the AutoDELFIA® Inhibin A kit together with other second trimester biomarkers for the detection of Down syndrome. RESULTS: The two methods showed a high degree of correlation (r=0.99, Pearson and Spearman correlation), and the average relative level difference between the methods at a concentration range of 41.7-1925 pg/mL was 19.6% [95% confidence interval (CI) from 17.6% to 21.5%]. The acceptable precision of the AutoDELFIA® Inhibin A kit was demonstrated: the within-lot CV% varied from 1.9% to 3.9%. The screening performance results show that AutoDELFIA® Inhibin A when added to a combination of other second trimester serum markers [human alpha foetoprotein (hAFP), free beta subunit of human chorionic gonadotropin (free hCGß) and unconjugated estriol (uE3) or hAFP and free hCGß] improves the detection rate of screening in both combinations. CONCLUSIONS: The performance of the AutoDELFIA® Inhibin A assay is highly acceptable for routine laboratory use for screening Down syndrome in the second trimester of pregnancy.

Screening for sleep apnoea in mild cognitive impairment: the utility of the multivariable apnoea prediction index.

Purpose. Mild cognitive impairment (MCI) is considered an "at risk" state for dementia and efforts are needed to target modifiable risk factors, of which Obstructive sleep apnoea (OSA) is one. This study aims to evaluate the predictive utility of the multivariate apnoea prediction index (MAPI), a patient self-report survey, to assess OSA in MCI. Methods. Thirty-seven participants with MCI and 37 age-matched controls completed the MAPI and underwent polysomnography (PSG). Correlations were used to compare the MAPI and PSG measures including oxygen desaturation index and apnoea-hypopnoea index (AHI). Receiver-operating characteristics (ROC) curve analyses were performed using various cut-off scores for apnoea severity. Results. In controls, there was a significant moderate correlation between higher MAPI scores and more severe apnoea (AHI: r = 0.47, P = 0.017). However, this relationship was not significant in the MCI sample. ROC curve analysis indicated much lower area under the curve (AUC) in the MCI sample compared to the controls across all AHI severity cut-off scores. Conclusions. In older people, the MAPI moderately correlates with AHI severity but only in those who are cognitively intact. Development of further screening tools is required in order to accurately screen for OSA in MCI.

The N-terminal extension of UBE2E ubiquitin-conjugating enzymes limits chain assembly.

Protein ubiquitylation depends upon the concerted action of ubiquitin-conjugating enzymes (E2s) and ubiquitin ligases (E3s). All E2s have a conserved ubiquitin-conjugating (UBC) domain but many have variable extensions N- and C-terminal to the UBC domain. For many E2s, the function of the extension is not well understood. Here, we show that the N-terminal extension of the UBE2E proteins regulates formation of polyubiquitin chains by the processive UBC domain. Target proteins are therefore monoubiquitylated by full-length UBE2E, whereas the UBC domain alone polyubiquitylates proteins. Although the N-terminal extension of UBE2E1 is largely disordered in solution, these residues have a critical role in limiting chain building, and when fused to the highly processive E2, UBE2D2, ubiquitylation is limited. For some E2s, interaction of ubiquitin with the 'backside' of the UBC domain promotes polyubiquitylation. However, interaction of ubiquitin with the backside of the UBC domain of UBE2E1 does not appear to be important for processivity. This study underscores the importance of studying full-length E2 proteins and not just the highly conserved core domain.

Glutamate receptor subunit and calmodulin kinase II expression, with and without T maze training, in the rat hippocampus following bilateral vestibular deafferentation.

UNLABELLED: Many previous studies have shown that lesions of the peripheral vestibular system result in spatial memory deficits and electrophysiological dysfunction in the hippocampus. Given the importance of glutamate as a neurotransmitter in the hippocampus, it was predicted that bilateral vestibular deafferentation (BVD) would alter the expression of NMDA and AMPA receptors in this area of the brain. METHODS: The expression of the NR1, NR2A, NR2B, GluR1, GluR2, GluR3 and GluR 4 glutamate receptor subunits, as well as calmodulin kinase IIα (CaMKIIα) and phosphorylated CaMKIIα (pCaMKIIα), was measured in the rat CA1, CA2/3 and dentate gyrus (DG) subregions of the hippocampus, at 24 h, 72 h, 1 week, 1 month and 6 months following BVD, using western blotting. In the 6 month group, half of the animals underwent spatial forced alternating training in a T-maze. RESULTS AND DISCUSSION: For the 24 h, 72 h, 1 week and 1 month data, there was no significant effect of surgery for any hippocampal subregion. However, for the 6 month data set, T maze training had a significant effect independently of surgery. The results of these experiments suggest that BVD is not associated with large changes in glutamate receptor subunit or CaMKIIα expression in the rat hippocampus, at least in terms of both the intra-cytoplasmic and membrane receptor subunits together, that western blotting can measure. However, spatial training-associated increases in glutamate receptor and CaMKIIα expression can be induced in BVD rats with impaired spatial performance. Therefore, the neurophysiological changes underlying BVD-induced spatial learning and memory deficits are more likely to be due to up and down regulation or changes in affinity/efficacy of glutamate receptors at the membrane level than changes in subunit transcription and transduction at the intra-cytoplasmic level.