Thrombogenicity of biodegradable metals

Biodegradable metals offer a promising means to ameliorate many of the long-term risks associated with vascular devices made of conventional biostable stent metals. While numerous biodegradable metal alloys have been developed and characterized in animal models, knowledge of their blood reactivity and thrombogenicity remains unknown. Metal hemocompatibility is particularly valuable because current generation drug-eluting stents pose a significant long-term thrombosis risk. In this study, four pure metals, widely used as degradable base materials (Fe, Zn, Mg, and Mo), and three alloys commonly used in cardiovascular devices [NiTi, CoCr, and stainless steel (SS)] were evaluated. This work examined how each of these metals activate platelets, coagulation factors, and inflammation using in vitro hemocompatibility assays and a clinically relevant ex vivo non-human primate arteriovenous shunt model. Testing found that while all metals promoted a downstream activation of platelets and coagulation in flowing whole blood, platelet and fibrin attachment to Mg was markedly reduced. Additionally, Fe and Mo trended toward higher platelet attachment and contact pathway activation. Overall, the results suggest that Mg may delay clot initiation, but not eliminate clot formation, indicating the importance of understanding thrombosis in Mg alloys that are currently being developed for clinical use as biodegradable stents.

Utilising a 'Community of Practice' to support pharmacists to work in residential aged care: protocol for a longitudinal evaluation

INTRODUCTION

A Community of Practice is briefly defined as a group of people with a shared interest in a given area of practice who work collaboratively to grow collective knowledge. Communities of Practice have been used to facilitate knowledge exchange and improve evidence-based practice. Knowledge translation within the residential aged care sector is lacking, with barriers such as inadequate staffing and knowledge gaps commonly cited. In Australia, a Federal inquiry into residential aged care practices led to a recommendation to embed pharmacists within residential aged care facilities. Onsite practice in aged care is a new role for pharmacists in Australia. Thus, support is needed to enable pharmacists to practice in this role.The primary aim is to evaluate the processes and outcomes of a Community of Practice designed to support pharmacists to work in aged care.

METHODS AND ANALYSIS

A longitudinal, single-group, pretest-post-test design in which the intervention is a Community of Practice. The Community of Practice will be established and made available for 3 years to all Australian pharmacists interested in, new to or established in aged care roles. The Community of Practice will be hosted on online discussion platforms, with additional virtual meetings and annual symposia. The following data will be collected from all members of the Community of Practice: self-evaluation of the processes and outcomes of the Community of Practice (via the CoPeval scale) and confidence in evidence-based practice (EPIC scale), collected via online questionnaires annually; and discussion platform usage statistics and discussion transcripts. A subset of members will be invited to participate in annual semi-structured individual interviews.Data from the online questionnaire will be analysed descriptively. Discussion transcripts will be analysed using topic modelling and content analysis to identify the common topics discussed and their frequencies. Qualitative data from individual interviews will be thematically analysed to explore perceptions and experiences with the intervention for information/knowledge exchange, impact on practice, and sharing/promoting/implementing evidence-based practice.

ETHICS AND DISSEMINATION

Human ethics approval has been granted by the University of Western Australia's Human Ethics Committee (2023/ET000000). No personal information will be included in any publications and reports to funding bodies.Findings will be disseminated to all members of the Community of Practice, professional organisations, social and mass media, peer-review journals, research and professional conferences and annual reports to the funding body.

Co-delivery of HIV pre-exposure prophylaxis (PrEP) and HIV testing among publicly insured adolescents and young adults (AYA) receiving medication for opioid use disorder (MOUD)

BACKGROUND

Low rates of HIV pre-exposure prophylaxis (PrEP) prescribing contribute to the disproportionate burden of HIV in the United States. Among adolescent and young adults (AYA) with opioid use disorder, HIV testing and PrEP co-prescription rates are poorly characterized.

METHODS

We performed a retrospective analysis involving deidentified data from Philadelphia's Medicaid beneficiaries ages 16-29 years who were prescribed medication for opioid use disorder (MOUD) from 2015 to 2020 and continuously Medicaid-enrolled for ≥6 months prior to that prescription. After identifying the presence of a qualifying diagnosis signifying a PrEP indication, we examined the outcome of appropriate PrEP co-prescriptions and HIV testing using generalized estimating equations (GEE) modeling.

RESULTS

We identified 795 AYA Medicaid beneficiaries with 1269 qualified treatment episodes. We calculated a PrEP prescribing rate of 29.47 per 1000 person-years among AYA receiving MOUD. The HIV testing rate was 63.47 per 1000 person-years among AYA receiving MOUD. GEE modeling revealed that individuals receiving methadone were more likely (aOR=2.62, 95% CI=1.06-6.49) to receive HIV testing within 6 months after a PrEP-qualifying diagnosis compared to those receiving other MOUD medications. Those who only saw outpatient behavioral health providers were less likely (aOR=0.48, 95% CI=0.24-0.99) to have received an HIV test within 6 months after the PrEP-qualifying diagnosis compared to those receiving inpatient behavioral health services.

CONCLUSIONS

Co-prescription of PrEP and HIV testing among AYA receiving MOUD was rare in this large urban publicly insured population. Interventions are needed to increase HIV prevention services for this key population of AYA at risk for HIV infection.

Can the Reboot coaching programme support critical care nurses in coping with stressful clinical events? A mixed-methods evaluation assessing resilience, burnout, depression and turnover intentions

BACKGROUND

Critical care nurses (CCNs) are routinely exposed to highly stressful situations, and at high-risk of suffering from work-related stress and developing burnout. Thus, supporting CCN wellbeing is crucial. One approach for delivering this support is by preparing CCNs for situations they may encounter, drawing on evidence-based techniques to strengthen psychological coping strategies. The current study tailored a Resilience-boosting psychological coaching programme [Reboot] to CCNs. Other healthcare staff receiving Reboot have reported improvements in confidence in coping with stressful clinical events and increased psychological resilience. The current study tailored Reboot for online, remote delivery to CCNs (as it had not previously been delivered to nurses, or in remote format), to (1) assess the feasibility of delivering Reboot remotely, and to (2) provide a preliminary assessment of whether Reboot could increase resilience, confidence in coping with adverse events and burnout.

METHODS

A single-arm mixed-methods (questionnaires, interviews) before-after feasibility study design was used. Feasibility was measured via demand, recruitment, and retention (recruitment goal: 80 CCNs, retention goal: 70% of recruited CCNs). Potential efficacy was measured via questionnaires at five timepoints; measures included confidence in coping with adverse events (Confidence scale), Resilience (Brief Resilience Scale), depression (PHQ-9) and burnout (Oldenburg-Burnout-Inventory). Intention to leave (current role, nursing more generally) was measured post-intervention. Interviews were analysed using Reflexive Thematic Analysis.

RESULTS

Results suggest that delivering Reboot remotely is feasible and acceptable. Seventy-seven nurses were recruited, 81% of whom completed the 8-week intervention. Thus, the retention rate was over 10% higher than the target. Regarding preliminary efficacy, follow-up measures showed significant increases in resilience, confidence in coping with adverse events and reductions in depression, burnout, and intention to leave. Qualitative analysis suggested that CCNs found the psychological techniques helpful and particularly valued practical exercises that could be translated into everyday practice.

CONCLUSION

This study demonstrates the feasibility of remote delivery of Reboot and potential efficacy for CCNs. Results are limited due to the single-arm feasibility design; thus, a larger trial with a control group is needed.

Multidisciplinary perspectives on roles of hospital pharmacists in tertiary settings: a qualitative study

In today's complex healthcare landscape, exacerbated by resource constraints at various levels, optimization of health professionals' roles is becoming increasingly paramount. Interprofessional collaboration, underpinned by role recognition and teamwork, leads to improved patient and organizational outcomes. Hospital pharmacists play a pivotal role in multidisciplinary teams, and it is imperative to understand multidisciplinary viewpoints on hospital pharmacists' roles to guide role prioritization and organizational efficiency. However, no study extensively investigated multidisciplinary views on values of diverse pharmacist roles in tertiary settings. This study aims to address this gap by examining non-pharmacist health professionals' views on hospital pharmacists' roles, recognizing their specialized niches as a crucial step towards optimizing their roles and services in Australia and internationally. Multiple focus group discussions and interviews were held via a virtual conferencing platform. Study participants were recruited using the study investigators' professional networks who were non-pharmacist health professionals with experience working with pharmacists in hospital settings. Data were collected from transcripts of the focus group recordings, which were later summarized using descriptive statistics and thematic analysis. Overarching themes were categorized and mapped against work system models to conceptualize organizational implications of multidisciplinary feedback, linking them to patient and organizational outcomes. Twenty-seven health professionals participated across focus groups and interviews, with the majority of professions being doctors and nurses. Three major themes were identified as follows: (i) overarching perceptions regarding hospital pharmacists; (ii) professional niches of hospital pharmacists; and (iii) future opportunities to optimize hospital pharmacy services. Valued professional niches included patient and health professional educators, transition-of-care facilitators, and quality use of medicines analysts. The study highlights critical insights into hospital pharmacists' roles in Australia, identifying their niche expertise as vital to healthcare efficiency and success. Based on multidisciplinary feedback, the study advocates for strategic role optimization and targeted research for enhanced clinical, economic, and organizational outcomes.

A Randomised Clinical Feasibility Trial of a Breast Immobilisation Device: The SuPPORT 4 All Bra

AIMS

Despite the breast being a mobile organ, there is currently no standard suitable immobilisation device to optimise radiotherapy for women with larger breasts treated after a wide local excision. The SuPPORT 4 All (S4A) bra was co-designed with patients and radiotherapy professionals. The purpose of this study was to test the feasibility of using the S4A bra in the existing breast cancer radiotherapy pathway.

MATERIALS AND METHODS

A randomised feasibility trial was conducted in a single institution; the primary feasibility endpoint was the recruitment of 50 participants. Efficacy endpoints were also tested, including assessment of skin reactions, dose to organs at risk and patient comfort. Fifty women were randomised to receive either standard radiotherapy with no immobilisation (control) or radiotherapy with the S4A bra (intervention). A separate planning study was undertaken on the cases randomised to receive the S4A bra. Participants in the intervention arm (S4A bra) underwent two planning computed tomography scans, one with the bra on and one without the bra; allowing direct comparison of organs at risk data for S4A bra versus no bra.

RESULTS

All women who started radiotherapy wearing the S4A bra completed treatment with the bra; patient comfort did not change across the 3 weeks of treatment. Positional accuracy using the bra was comparable with existing published accuracy for methods without immobilisation. The mean ipsilateral lung doses showed some improvement when positioning with the S4A bra was compared with the no bra set-up (3.72 Gy versus 4.85 Gy for right-sided cases, 3.23 Gy versus 3.62 Gy for left-sided cases).

CONCLUSIONS

The S4A bra is feasible to use in the radiotherapy pathway with good patient adherence. The S4A bra has potential to reduce dose to organs at risk (specifically ipsilateral lung dose) while maintaining good breast tissue coverage, and improved patient dignity, warranting further investigation on a larger scale.

Influence of Annealing on the Structural, Morphological, Photoluminescence and Visible Absorption Properties of Mg Doped CuO Micro Grains

Narrow band gap oxide materials that harvest visible light have gained considerable attention for numerous visible light mediated applications. In this current work, a typical Mg doped CuO bulk material was prepared by a simple wet chemical method. The prepared material was annealed in three different temperatures viz.; 300 °C, 400 and 500 °C in air atmosphere to tune the optical band gap. XRD studies reveal that the average crystallite size increases with increase in annealing temperature. FESEM images of all the samples show their bulk nature with different grain sizes and morphologies. XPS survey scan spectra exhibit photoelectron emissions of Cu2p, O1s and Mg 1s with binding energies 933.69 eV, 533.41 eV and 1304.2 eV for all the samples and validated the effective incorporation of Mg ions into the CuO lattice. PL spectra reveal the polychromatic UV- visible luminescence bands for all the annealed samples, whereby the PL intensity is found to be decreasing as the annealing temperature increases. Finally, the band gap decreases with annealing temperature and indicates that the sample annealed at 500 °C can be exploited for visible light assisted applications such as solar cells, photocatalysis and photoelectrochemical cell.

Feasibility and Safety of Single-Isocenter/Multi-Lesion (SIML) HyperArc Brain SRT: Clinical Implementation and Early Outcomes

PURPOSE/OBJECTIVE(S)

Patients with multiple brain metastases may not tolerate relatively longer treatment times for traditional stereotactic radiation therapy (SRT) with individual isocenter plans for each lesion due to discomfort or co-morbidities. SRT using a single-isocenter/multi-lesion (SIML) HyperArc volumetric modulated arc therapy (VMAT) plan with flattening filter free (FFF) beam could significantly shorten overall treatment time, and improve patient comfort, compliance, and clinic efficiency. We report early clinical results of treating multiple brain metastases with SIML HyperArc SRT.

MATERIALS/METHODS

Twenty-three patients with multiple brain metastatic tumors (range, 2-9 lesions; total treated lesions, n = 96) were simulated using Encompass support and Q-fix mask, and treated with a highly-conformal SIML VMAT SRT plans via non-coplanar HyperArc geometry. Mean tumor distance to isocenter was 5.3 cm, maximum up to 7 cm. Common prescriptions were 25-30 Gy/5 fractions, 24-27 Gy/3 fractions, and 20 Gy/1 fraction prescribed to each planning target volume (PTV) using 2 mm margin around standard gross tumor volume (GTV) delineated on contrasted enhanced MP-RAGE MRI fusion. Acuros dose calculation for 6MV-FFF beam was used for tissue heterogeneity corrections. Alliance A071801 criteria was used for dose constraints to organs at risk (OAR) and target conformality. Treatment was delivered every other day with CBCT-guidance, adjustments made with 6DOF couch corrections on a medical linear accelerator, and treatment delivery time within 15 minutes. Local control rates were reported, and toxicity profile rated based on CTCAE v5.0 for brain radionecrosis, optic neuropathy, and brainstem dysfunction.

RESULTS

All plans met Alliance A071801 requirements for each tumor coverage, dose to OAR including optic apparatus, brainstem, and spinal cord. Mean GTV and PTV volume were 9.4 cc (range, 0.3-54.8 cc) and 16.13 cc (range, 1.0-80.2 cc). Patient-specific quality assurance results were 98.3% for gamma passing criteria of 2%/2mm. Independent in-house Monte Carlo physics second check agreed with HyperArc plans by ±3.0%. Mean follow up was 6 months (range, 0.0-18.6 months). Of the 23 patients treated, 17 (74%) had post-treatment MRI imaging to assess local control and toxicity. Local control was achieved in 69/73 (95%) of treated and followed lesions. CTCAE grade 2 radionecrosis occurred in 2 patients and were managed with dexamethasone. No CTCAE grade 3+ events of radionecrosis, optic pathway dysfunction, or brainstem toxicity were observed.

CONCLUSION

SIML HyperArc Brain SRT for multiple brain metastases has excellent local control and low toxicity profile in our patients. It can significantly reduce treatment delivery time as compared to traditional multiple-isocenter brain SRT or chronologically separate treatment courses and thus, help to improve patient comfort, compliance, ease of care, and clinic workflow. Longer median follow up of SIML brain SRT on larger patient cohort is warranted.

Genomic evaluation of feed efficiency in US Holstein heifers

There is growing interest in improving feed efficiency traits in dairy cattle. The objectives of this study were to estimate the genetic parameters of residual feed intake (RFI) and its component traits [dry matter intake (DMI), metabolic body weight (MBW), and average daily gain (ADG)] in Holstein heifers, and to develop a system for genomic evaluation for RFI in Holstein dairy calves. The RFI data were collected from 6,563 growing Holstein heifers (initial body weight = 261 ± 52 kg; initial age = 266 ± 42 d) for 70 d, across 182 trials conducted between 2014 and 2022 at the STgenetics Ohio Heifer Center (South Charleston, OH) as part of the EcoFeed program, which aims to improve feed efficiency by genetic selection. The RFI was estimated as the difference between a heifer's actual feed intake and expected feed intake, which was determined by regression of DMI against midpoint MBW, age, and ADG across each trial. A total of 61,283 SNPs were used in genomic analyses. Animals with phenotypes and genotypes were used as training population, and 4 groups of prediction population, each with 2,000 animals, were selected from a pool of Holstein animals with genotypes, based on their relationship with the training population. All traits were analyzed using univariate animal model in DMU version 6 software. Pedigree information and genomic information were used to specify genetic relationships to estimate the variance components and genomic estimated breeding values (GEBV), respectively. Breeding values of the prediction population were estimated by using the 2-step approach: deriving the prediction equation of GEBV from the training population for estimation of GEBV of prediction population with only genotypes. Reliability of breeding values was obtained by approximation based on partitioning a function of the accuracy of training population GEBV and magnitudes of genomic relationships between individuals in the training and prediction population. Heifers had DMI (mean ± SD) of 8.11 ± 1.59 kg over the trial period, with growth rate of 1.08 ± 0.25 kg/d. The heritability estimates (mean ± SE) of RFI, MBW, DMI, and growth rate were 0.24 ± 0.02, 0.23 ± 0.02, 0.27 ± 0.02, and 0.19 ± 0.02, respectively. The range of genomic predicted transmitted abilities (gPTA) of the training population (-0.94 to 0.75) was higher compared with the range of gPTA (-0.82 to 0.73) of different groups of prediction population. Average reliability of breeding values from the training population was 58%, and that of prediction population was 39%. The genomic prediction of RFI provides new tools to select for feed efficiency of heifers. Future research should be directed to find the relationship between RFI of heifers and cows, to select individuals based on their lifetime production efficiencies.

First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment

The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60 live days using a fiducial mass of 5.5 t. A profile-likelihood ratio analysis shows the data to be consistent with a background-only hypothesis, setting new limits on spin-independent WIMP-nucleon, spin-dependent WIMP-neutron, and spin-dependent WIMP-proton cross sections for WIMP masses above 9  GeV/c^{2}. The most stringent limit is set for spin-independent scattering at 36  GeV/c^{2}, rejecting cross sections above 9.2×10^{-48}  cm at the 90% confidence level.

Behaviours that contribute to pharmacist professionalism: a scoping review

OBJECTIVES

Clearly understanding and describing professional behaviours of pharmacists allows the profession, researchers and policy-makers to observe and monitor the professionalism of pharmacists, and design interventions to improve it where needed. The primary objective of this review was to identify which behaviours are discussed to contribute to professionalism in registered pharmacists in peer-reviewed literature. The secondary objective was to review the identified behaviours using a behavioural specification framework to understand how they are expressed.

DESIGN

A scoping literature review was conducted.

DATA SOURCES

An electronic database search of Scopus, Embase, PsycINFO, PsychArticles, Emcare and Medline limited to articles published in English from 1 January 2000 to 21 October 2022 was conducted.

ELIGIBILITY CRITERIA

Eligible articles contributed behaviourally relevant content with reference to registered pharmacists' professionalism.

DATA EXTRACTION AND SYNTHESIS

Extracted behaviourally relevant content was subject to researcher's familiarisation, then deductive coding to one of two overarching definitions of technical or non-technical behaviour. Data were then inductively coded through assignment of a descriptive code to identify categories of professional behaviour within these two overarching types of behaviour.

RESULTS

Seven articles were identified and included in the final analysis. From the extracted behaviourally relevant content, 18 categories of behaviours were identified. All articles identified behaviours in categories titled 'establishes effective relationships' and 'complies with regulations codes and operating procedures'. Identified behaviours were often broadly described and merged with descriptions of influences on them and broader outcomes that they contribute to.

CONCLUSIONS

Behaviours described to contribute to pharmacists' professionalism in the literature are broad and non-specific.

Perceptions and expectations of health professionals regarding hospital pharmacy services and the roles of hospital pharmacists: A qualitative systematic review and meta-synthesis

Background

Pharmacists have become increasingly integrated within the interprofessional hospital team as their scope of practice expanded in recent decades. However, limited research has explored how the roles of hospital pharmacists are perceived by other health professionals.

Aim/Objectives

To identify what is known about the perceptions of hospital pharmacists' roles and hospital pharmacy services held by non-pharmacist health professionals.

Methods

A systematic literature search was conducted in August 2022 in MEDLINE, Embase, and CINAHL to identify peer-reviewed articles published between 2011 and 2022. Title/abstract and full-text screening, by two independent reviewers, identified eligible articles. Inclusion criteria included qualitative studies in hospital settings that reported perceptions regarding the roles of hospital pharmacists held by non-pharmacist health professionals. Data were extracted using a standardised extraction tool. Collated qualitative data underwent inductive thematic analysis by two independent investigators to identify codes, which were reconciled and merged into over-arching themes through a consensus process. Findings were assessed to measure confidence using the GRADE-CERQual criteria.

Results

The search resulted in 14,718 hits. After removing duplicates, 10,551 studies underwent title/abstract screening. Of these, 515 underwent full-text review, and 36 were included for analysis. Most studies included perceptions held by medical or nursing staff. Hospital pharmacists were perceived as valuable, competent and supportive. At an organisational level, the roles of hospital pharmacists were perceived to benefit hospital workflow and improve patient safety. Roles contributing to all four domains of the World Health Organization's Strategic Framework of the Global Patient Safety Challenge were recognised. Highly-valued roles include medication reviews, provision of drug information, and education for health professionals.

Conclusion

This review describes the roles hospital pharmacists performed within the interprofessional team, as reported by non-pharmacist health professionals internationally. Multidisciplinary perceptions and expectations of these roles may guide the prioritisation and optimisation of hospital pharmacy services.

Who would be a pharmacist? A national representative cross-sectional survey of pharmacists and students to explore personality traits and associations with job satisfaction and career outlook

OBJECTIVES

Pharmacists' response to practice change tends to range from apprehension to excitement. It is unknown if these varying responses are related to differing personality traits. This study aimed to describe the personality traits of Australian pharmacists, pharmacist interns and pharmacy students and any potential associations with their career satisfaction and/or outlook.

METHODS

Australian pharmacy students, pre-registration and registered pharmacists were eligible to participate in the cross-sectional online survey that consisted of participant demographics, personality traits (using a reliable validated instrument, the Big Five Inventory) and career outlook statements (three optimistic and three pessimistic statements). Data were analysed descriptively and using linear regression.

KEY FINDINGS

The 546 respondents scored highly for agreeableness (4.0 ± 0.6) and conscientiousness (4.0 ± 0.6) and lowest in neuroticism (2.8 ± 0.8)). Pessimistic career outlook statements were predominantly neutral or disagreement, in contrast to the responses to the optimistic outlook statements that were predominantly neutral or agreement. Just over half (198 out of 368, 53%) of the registered pharmacists stated that they intended to practice in the profession for more than 10 years. For pharmacists, age had significant positive associations with the three optimistic career outlook statements and significant inverse relationships with three pessimistic career outlook statements. Neuroticism had significant inverse associations with optimistic statements and positive relationships with pessimistic statements.

CONCLUSIONS

All demographics tested was overall optimistic about the pharmacy profession with pharmacists scoring highly in agreeableness, conscientiousness and openness.

Evaluation of a training programme for critical incident debrief facilitators

BACKGROUND

Critical incident debriefs are a commonly used occupational health tool for supporting staff after traumatic work incidents. However, there is a dearth of literature evaluating training programmes for debrief facilitators.

AIMS

To evaluate a 5-day training programme to equip healthcare, social care and voluntary, community and social enterprise sector staff to act as post-incident peer supporters and debrief facilitators.

METHODS

A mixed-methods, single-arm, before-and-after study. Data were collected at baseline and post-training. The quantitative outcome measure was 'Confidence'; the sum of two items measuring confidence in (i) supporting peers after critical incidents and (ii) facilitating post-incident structured team discussions. At post-training, quantitative and qualitative feedback regarding experiences and perceptions of the training was also gathered.

RESULTS

We recruited 45 participants between October 2021 and January 2022. Confidence in supporting peers following incidents and facilitating post-incident structured team discussions increased significantly following the training, t(35) = -6.77, P < 0.001. A majority of participants reported they would do things differently because of the training and that they found the training relevant, useful and engaging. Summative content analysis of qualitative feedback indicated that participants (i) believed the role plays were an important learning tool and (ii) thought it was important that the trainer was engaging. Some participants would have preferred in-person delivery.

CONCLUSIONS

Participants valued training in post-incident peer support and debriefing skills. Organizations implementing post-incident support pathways could usefully include this training and ensure optimal uptake and engagement by (i) providing in-person and online delivery options and (ii) including role play as a learning technique.

Exploring patient experience and satisfaction with depot buprenorphine formulations: A mixed-methods study

INTRODUCTION

The introduction of depot buprenorphine for the treatment of opioid dependence allows for reduced dosing frequency compared with conventional treatments, such as oral methadone and sublingual buprenorphine-naloxone. Reduced dosing frequency is perceived to reduce issues such as high out-of-pocket costs, frequent attendance to pharmacies, stigmatisation and the risk of diversion for unsanctioned opioid use. This study aims to explore the experiences of patients receiving depot buprenorphine from an Australian publicly operated drug and alcohol service.

METHODS

Participants were recruited from the service over a 5-week period in 2021. Twenty-eight participants consented to be involved in a mixed methods quantitative verbal survey and qualitative interview process.

RESULTS

The majority of participants reported satisfaction with depot buprenorphine across the domains of efficacy, convenience and global satisfaction. Participants perceived benefits as increased convenience, reduced stigmatisation and the inability to 'skip' daily Medication Assisted Treatment for Opioid Dependence (MATOD) doses. There were mixed experiences with the ability for depot buprenorphine to 'hold' participants throughout the dosing interval. Reduced contact and disconnection from healthcare services were reported as an issue for some participants when initiating depot buprenorphine.

DISCUSSION AND CONCLUSIONS

Patient perceptions of depot buprenorphine appear to be deeply rooted in prior experience with 'conventional' MATOD treatments. Depot buprenorphine is seen to be beneficial socially, personally, and financially by the majority of patients interviewed. The potential for disconnection from services and mixed experiences of efficacy throughout the dosing period may negatively influence patient experience.

Design and implementation of a program wide pharmaceutical compounding curriculum using the scaffold learning approach

BACKGROUND AND PURPOSE

We evaluated the design and implementation of a program wide pharmaceutical compounding curriculum covering five modules over four years using the scaffold learning approach in a pharmacy degree program.

EDUCATIONAL ACTIVITY AND SETTING

A programmatic approach was taken in the development of compounding expertise, which required moving away from a compartmentalized course design to a multi-course approach spanning all four years of the pharmacy program.

FINDINGS

Since the intervention began in 2014, course failure rates, which were around 34% (2012-2014), have significantly decreased to 1.5% (2015-2019), and the percentage of students achieving distinction and above has increased four-fold from 20% (2012-2014) to 80% (2015-2019).

SUMMARY

A program wide scaffold learning approach was more effective in the development of compounding skills throughout the pharmacy program than teaching compounding techniques in different modules without clear vertical integration.

Bloodstream infections in neonates with central venous catheters in three tertiary neonatal intensive care units in Pune, India

BACKGROUND

Neonates admitted to the neonatal intensive care unit (NICU) are at risk for healthcare-associated infections, including central line-associated bloodstream infections. We aimed to characterize the epidemiology of bloodstream infections among neonates with central venous catheters admitted to three Indian NICUs.

METHODS

We conducted a prospective cohort study in three tertiary NICUs, from May 1, 2017 until July 31, 2019. All neonates admitted to the NICU were enrolled and followed until discharge, transfer, or death. Cases were defined as positive blood cultures in neonates with a central venous catheter in place for greater than 2 days or within 2 days of catheter removal.

RESULTS

During the study period, 140 bloodstream infections were identified in 131 neonates with a central venous catheter. The bloodstream infection rate was 11.9 per 1000 central line-days. Gram-negative organisms predominated, with 38.6% of cases caused by Klebsiella spp. and 14.9% by Acinetobacter spp. Antimicrobial resistance was prevalent among Gram-negative isolates, with 86.9% resistant to third- or fourth-generation cephalosporins, 63.1% to aminoglycosides, 61.9% to fluoroquinolones, and 42.0% to carbapenems. Mortality and length of stay were greater in neonates with bloodstream infection than in neonates without bloodstream infection (unadjusted analysis, p < 0.001).

CONCLUSIONS

We report a high bloodstream infection rate among neonates with central venous catheters admitted to three tertiary care NICUs in India. Action to improve infection prevention and control practices in the NICU is needed to reduce the morbidity and mortality associated with BSI in this high-risk population.

Digital Pathology, A Cognitively Efficient Teaching Strategy: Current Application and a Glimpse into Future

Introduction/Objective

If pathology education is to be efficacious, it must embrace the ramifications of cognitive load of the learners, to optimize the capacity of the working memory. When undergraduate students commence their learning of pathology, they encounter a heap of new data and classifications. Simplifying these intricate systems into assimilable subschemas and items is key for effective transfer of knowledge. The minimization of the profundity of intrinsic cognitive load is essential, considering that its impact on pathology beginners is often left unaccounted, both in active learning as well as in traditional methods of instruction. In today’s digital generation, digital pathology plays a key role by intertwining disease morphology with clinical presentation and fortifying its pathophysiologic basis. We designed a teaching methodology utilizing digital pathology to evaluate its effect on cognitive load.

Methods/Case Report

Active learning was implemented online using digital pathology, molecular pathology, and laboratory data in case-based setting with question-answer sessions. In small groups, students were encouraged to analyze digital pathology slides with the help of annotations and identify areas of histopathological significance. They utilized this information further to make an accurate diagnosis and answer corresponding questions, with access to answers available later, complemented with algorithms and concept maps. A 14-item structured questionnaire was delivered afterwards to evaluate the efficacy and popularity of the exercise.

Results (if a Case Study enter NA)

End-of-term examination results showed that learners developed higher-order comprehension skills along with a greater potential in interpreting histopathological data towards solving case studies. Feedback revealed a higher degree of overall satisfaction and increased ability to retain information.

Conclusion

Digital transformation of pathology education provides the kind of framework where learning happens naturally - developing in small boosts of progress until expertise is achieved, and students appreciate the value of the ‘learned thing’ along with the real utility of that knowledge. The innovative approach utilizing digitization and integration offers the opportunity of decrement in intrinsic cognitive load by invoking students to build better, reliable, long-lasting, supportable and inclusive schemata while correlating the relevant incoming information with previously stabilized knowledge and consolidating the entirety of understanding.

Environmental photochemistry by cobalt doped magnesium ferrites: UV light assisted degradation of anionic azo and cationic thiazine dyes

In the current study, cobalt magnesium ferrites (Mg_0.8-xCo_xFe₂O₄ for x values 0.2, 0.4 and 0.6) nanoparticles are prepared by combustion method. The morphology, optical, structural, photocatalytic, compositional and vibrational properties of Mg_0.8-xCo_xFe₂O₄ by the influence of cobalt doping is investigated. Fourier Transform Infrared (FTIR) Spectroscopy and X-ray diffraction (XRD) confirms the formation of spinel cubic phase of the prepared ferrites samples. The optical band gap energy shows a strong effect on crystallite size and increases from 4.2 to 4.4 eV as the concentration of cobalt gets increased. TEM images of Mg_0.8-xCo_xFe₂O₄ clearly reveal spherical nanoparticles with decreasing particle size which ranges from 16 to 10 nm. EDAX spectrum confirms the existence of Fe, Co, Mg and oxygen. The photocatalytic studies of Mg_0.8-xCo_xFe₂O₄ are performed for anionic and cationic dyes. The rate constant values of methylene blue are found as 0.017/min, 0.019/min and 0.022/min for Mg_0.8-xCo_xFe₂O₄ for x values 0.2, 0.4 and 0.6 respectively. The degradation efficacy of the prepared samples to degrade methylene blue is high (95%) and it indicates that they may be efficient in degrading environmental pollutants and may prove out to be competent photo-catalyst.

Study protocol for the online adaptation and evaluation of the 'Reboot' (Recovery-boosting) coaching programme, to prepare critical care nurses for, and aid recovery after, stressful clinical events

Background

Critical care nurses (CCNs) are routinely exposed to highly stressful events, exacerbated during the COVID-19 pandemic. Supporting resilience and wellbeing of CCNs is therefore crucial to prevent burnout. One approach for delivering this support is by preparing critical care nurses for situations they may encounter, drawing on evidence-based techniques to strengthen relevant psychological coping strategies. As such, the current study seeks to tailor a Resilience-boosting psychological coaching programme [Reboot] for CCNs, based on cognitive behavioural therapy (CBT) principles and the Bi-Dimensional Resilience Framework (BDF), and (1) to assess the feasibility of delivering Reboot via online, remote delivery to CCNs, and (2) to provide a preliminary assessment of whether Reboot could increase resilience and confidence in coping with adverse events.

Methods

Eighty CCNs (n=80) will be recruited to the 8-week Reboot programme, comprised of two group workshops and two individual coaching calls. The study uses a single-arm before-after feasibility study design and will be evaluated with a mixed-methods approach, using online questionnaires (all participants) and telephone interviews (25% of participants). Primary outcomes will be confidence in coping with adverse events (the Confidence scale) and resilience (the Brief Resilience Scale) measured at four time points.

Discussion

Results will determine whether it is feasible to deliver and evaluate a remote version of the Reboot coaching programme to CCNs, and will indicate whether participating in the programme is associated with increases in confidence in coping with adverse events, resilience and wellbeing (as indicated by levels of depression).

UV light assisted photocatalytic degradation of textile waste water by Mg0.8-xZnxFe2O4 synthesized by combustion method and in-vitro antimicrobial activities

In this paper, Magnesium Zinc Ferrite (MZF) nanoparticles (Mg_0.8-xZn_xFe₂O₄, where x = 0.2, 0.4 and 0.6) are successfully fabricated by combustion process. The prepared nanoparticles are characterized through XRD, FTIR, UV, SEM, EDS and TEM. It has been confirmed that the samples produced cubic spinel structure with crystal size in the range of 13-15 nm. From the ultraviolet spectrum, the optical band gap is calculated which ranges from 5.6 to 4.6 eV. TEM micrographs confirm the nanocrystalline nature of combustion derived ferrite nanoparticles with average particle diameter of 7-28 nm. Antibacterial studies confirmed that the nanoparticles are toxic to Pseudomonas aeruginosa consists of greatest zone of inhibition of 25 mm. The antibacterial and photocatalytic studies exhibited improved activity which is strongly influenced by the zinc doping. Photocatalytic degradation study reveal that the prepared nanoparticles function as perfect catalyst for degradation of Methylene Blue (MB) dye and Textile Dyeing Waste Water (TDWW) under UV light, thus revealing their potential usage on organic pollutants.

253 Innovative Teaching Early in Medical Career to Expose Medical Students to Surgery

Aim

At Lancashire Teaching Hospitals medical students begin their clinical career in Year 3 and are posted in General Surgery for 4 weeks, a relatively short period to experience the wide variety of surgical specialities and operative techniques. A surgical skills course - Lancashire Teaching Hospitals Surgical Skills for Medical Students (LTHSSMS) was designed and piloted. The aim was to assess the student experience of the LTHSSMS course conducted for Year 3 students at Lancashire Teaching Hospitals in 2019.

Method

This all-day course was optional, taught in groups of 15 students per course with a minimum of 2 experienced tutors. The LTHSSMS course included practical skills such as scrubbing, gloving, surgical knotting, suturing, excision of skin lesions and local anaesthetic techniques. It also included lectures on suture materials, abdominal incisions, laparoscopic and robotic surgery. There were interactive discussions to include non-technical skills, theatre in brief and WHO checklist.

Results

95% (n- 86) of students posted in surgery attended the course. 86.3% (n-75) felt the course was very relevant for their training. 90.7% (n-78) stated they enjoyed the course and 98.8% (n-85) stated they would recommend the course to fellow third-year students. 97.7% (n-84) stated the tutors delivered the course in an enthusiastic and positive manner. 79.1% (n-68) rated the audio video as excellent.

Conclusions

This course has provided a high impact surgical experience for the medical students at the beginning of their clinical careers. Similar opportunities if made available to students in all medical schools could improve and renew the interest in a surgical career.

Do pharmacy practice standards effectively describe behaviour? Reviewing practice standards using a behavioural specificity framework

Background

Guidelines and practice standards exist to communicate the conduct and behaviour expected of health care professionals and ensure consistent quality practice. It is important that they describe behaviours explicitly so they can be interpreted, enacted and measured with ease. The AACTT framework specifies behaviour in terms of the: Action to be performed, Actor who performs the action, Context where the action occurs, Target who the action is performed with/for and Time when the action is performed (AACTT). It provides the most up to date framework for specifying behaviours and is particularly relevant to complex behavioural problems that involve sequences of behaviours performed by different people. Behavioural specificity within pharmacy practice standards has not been explored.

Aim

To determine if behaviours described in the Professional Practice Standards for Australian Pharmacists specify Action, Actor, Context, Target and Time.

Methods

Two researchers independently reviewed the scope and structure of the practice standards and one extracted action statements (behaviours) verbatim. Through an iterative process, the researchers modified and developed the existing AACTT definitions to operationalise them for application to review of the action statements in the practice standards. The operational definitions, decision criteria and curated examples were combined in a codebook. The definitions were consistently applied through a directed content analysis approach to evaluate all extracted action statements by one researcher. For consistency 20% was independently checked for agreement by a second researcher.

Results

A novel codebook to apply AACTT criteria to evaluate practice standards was developed. Application of this codebook identified 768 independent behaviours. Of these, 300 (39%) described at least one discrete observable action, none specified an actor, 25 (3%) specified context, 131 (17%) specified target and 88 (11%) specified time.

Conclusion(s)

The behaviours detailed in practice standards for Australian pharmacists do not consistently specify behaviours in terms of Action, Actor, Context, Target and Time. Developers in the pharmacy profession, and beyond, should consider the behavioural specificity of their documents to improve interpretability, usability and adherence to the behaviours detailed. This also has implications for the development and evaluation of interventions to change such behaviours and improve quality of care.

Automated quantitative evaluation of fetal atrioventricular annular plane systolic excursion

OBJECTIVES

The primary aim of this study was to evaluate the feasibility of automated measurement of fetal atrioventricular (AV) plane displacement (AVPD) over several cardiac cycles using myocardial velocity traces obtained by color tissue Doppler imaging (cTDI). The secondary objectives were to establish reference ranges for AVPD during the second half of normal pregnancy, to assess fetal AVPD in prolonged pregnancy in relation to adverse perinatal outcome and to evaluate AVPD in fetuses with a suspicion of intrauterine growth restriction (IUGR).

METHODS

The population used to develop the reference ranges consisted of women with an uncomplicated singleton pregnancy at 18-42 weeks of gestation (n = 201). The prolonged-pregnancy group comprised women with an uncomplicated singleton pregnancy at ≥ 41 + 0 weeks of gestation (n = 107). The third study cohort comprised women with a singleton pregnancy and suspicion of IUGR, defined as an estimated fetal weight < 2.5^th centile or an estimated fetal weight < 10^th centile and umbilical artery pulsatility index > 97.5^th centile (n = 35). Cineloops of the four-chamber view of the fetal heart were recorded using cTDI. Regions of interest were placed at the AV plane in the left and right ventricular walls and the interventricular septum, and myocardial velocity traces were integrated and analyzed using an automated algorithm developed in-house to obtain mitral (MAPSE), tricuspid (TAPSE) and septal (SAPSE) annular plane systolic excursion. Gestational-age specific reference ranges were constructed and normalized for cardiac size. The correlation between AVPD measurements obtained using cTDI and those obtained by anatomic M-mode were evaluated, and agreement between these two methods was assessed using Bland-Altman analysis. The mean Z-scores of fetal AVPD in the cohort of prolonged pregnancies were compared between cases with normal and those with adverse outcome using Mann-Whitney U-test. The mean Z-scores of fetal AVPD in IUGR fetuses were compared with those in the normal reference population using Mann-Whitney U-test. Inter- and intraobserver variability for acquisition of cTDI recordings and offline analysis was assessed by calculating coefficients of variation (CV) using the root mean square method.

RESULTS

Fetal MAPSE, SAPSE and TAPSE increased with gestational age but did not change significantly when normalized for cardiac size. The fitted mean was highest for TAPSE throughout the second half of gestation, followed by SAPSE and MAPSE. There was a significant correlation between MAPSE (r = 0.64; P < 0.001), SAPSE (r = 0.72; P < 0.001) and TAPSE (r = 0.84; P < 0.001) measurements obtained by M-mode and those obtained by cTDI. The geometric means of ratios between AVPD measured by cTDI and by M-mode were 1.38 (95% limits of agreement (LoA), 0.84-2.25) for MAPSE, 1.00 (95% LoA, 0.72-1.40) for SAPSE and 1.20 (95% LoA, 0.92-1.57) for TAPSE. In the prolonged-pregnancy group, the mean ± SD Z-scores for MAPSE (0.14 ± 0.97), SAPSE (0.09 ± 1.02) and TAPSE (0.15 ± 0.90) did not show any significant difference compared to the reference ranges. Twenty-one of the 107 (19.6%) prolonged pregnancies had adverse perinatal outcome. The AVPD Z-scores were not significantly different between pregnancies with normal and those with adverse outcome in the prolonged-pregnancy cohort. The mean ± SD Z-scores for SAPSE (-0.62 ± 1.07; P = 0.006) and TAPSE (-0.60 ± 0.89; P = 0.002) were significantly lower in the IUGR group compared to those in the normal reference population, but the differences were not significant when the values were corrected for cardiac size. The interobserver CVs for the automated measurement of MAPSE, SAPSE and TAPSE were 28.1%, 17.7% and 15.3%, respectively, and the respective intraobserver CVs were 33.5%, 15.0% and 17.9%.

CONCLUSIONS

This study showed that fetal AVPD can be measured automatically by integrating cTDI velocities over several cardiac cycles. Automated analysis of AVPD could potentially help gather larger datasets to facilitate use of machine-learning models to study fetal cardiac function. The gestational-age associated increase in AVPD is most likely a result of increasing cardiac size, as the AVPD normalized for cardiac size did not change significantly between 18 and 42 weeks. A decrease was seen in TAPSE and SAPSE in IUGR fetuses, but not after correction for cardiac size. © 2021 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Contextual factors in premature CHD mortality in selected African countries within the SDG framework

Background

The sustainable development goal number 3, target 4 (SDG 3.4) seeks by 2030, a 30% reduction in four premature chronic disease mortality (4CHD) from 2015 values. Since the implementation of SDG 3.4 in 2016, the highest risk of dying from CHD was observed in low and lower-income countries mainly in Africa. This study examined the relationship between contextual factors and diabetes-related deaths as an example of the 4CHD; to enable an improved contextualized evidence-based approach, to attain in part the SDG 3.4 among United Nations Member States in Africa region (UNMSAFR).

Methods

Country-level data was retrieved for post SDG initiative years (2016-2019) from multiple publicly available data sources for 32 selected UNMSAFR located in the International Diabetes Federation (IDF) East and West Africa Region. Multiple linear regression was employed to ascertain the association between diabetes-related deaths in individuals 20-79 years in UNMSAFR and contextual factors identified in the SDGs framework. Two regression models were tested by conducting unweighted and weighted data analysis.

Results

The unweighted analysis showed that diabetes-related deaths in individuals 20-79 years/1,000 varied across the selected UNMSAFR in IDF East and West Regions (n = 31), with a range of 0.06 - 0.48/1,000 and an average of 0.24/1,000. Contextual factors, i.e., unemployment rate and geographical region explained 23% variability in diabetes-related deaths across the selected UNMSAFR. However, in the weighted data analysis, voice and accountability explained 47% variability in diabetes-related deaths across selected UNMSAFR in IDF East and West Region (n = 32).

Conclusions

Contextual factors such as unemployment rate, geographical region, and voice and accountability (governance) were associated with diabetes mortality; identifying that salient modifiable features can inform targeted interventions and policies to reduce premature CHD mortality.

Key messages

Contextual factors should be considered in policies and interventions for a comprehensive approach to premature CHD mortality reduction. Spatial clustering of CHD is critical for region interventions.

Optimization of ovine bone decalcification for increased cellular detail: a parametric study

There are many published methods of decalcifying bone for paraffin histology; however, the current literature lacks details regarding the processing of ovine tissue. Ovine bone tissue presents challenges, as samples are often denser and larger than other comparative animal models, thus increasing decalcification times. Trifluoroacetic Acid (TFAA) has previously been used to decalcify ovine bone samples for histological analysis. Unfortunately, TFAA is a strong acid and often results in loss of cellular detail, especially in the connected soft tissue. This is generally manifested as over staining with eosin, and a decrease in cellular features which impacts overall histological interpretation. It is well known that leaving tissue in acid for long periods degrades cellular detail; therefore, minimizing decalcification time is critical to accurately determine cellular morphology. Six decalcification solutions (8% TFAA, 20% TFAA, 8% formic acid, 20% formic acid, Formical-4, and XLCal, and three temperatures (room temperature, 30°C, 37°C), were examined to determine their effects on cellular detail in ovine vertebrae and humeral heads. These data clearly indicate that 20% formic acid at 30°C yielded better decalcification rates (2.6 d ± 0.9 d) and cellular detail (none to mild changes) for the vertebrae samples, and 20% formic acid at RT yielded the best cellular detail (none to minimal loss) for humerus samples with a moderate amount of time (6.5 d ± 1.7). These results should establish the optimal demineralization procedures for ovine bone used in scientific studies resulting in improved cellular detail while minimizing decalcification times.

Trait mindfulness and the mental and physical health of caregivers for individuals with cancer

BACKGROUND

Mindfulness plays a role in moderating the negative mental and physical health outcomes associated with caregiving. The aims of this study were to examine the relationship between trait mindfulness and the (1) psychological functioning, (2) health behaviors, (3) and physical health of caregivers for individuals diagnosed with cancer.

METHODS

Caregivers completed a battery of questionnaires and examinations assessing sociodemographic characteristics, trait mindfulness, depression, perceived stress, caregiver stress, sleep, diet, physical activity, tobacco use, alcohol use, blood pressure, and BMI. Demographics and cancer diagnostics were collected for the individuals whom caregivers supported. Linear regression, multivariate analyses, and moderator analyses were performed.

RESULTS

Of the 78 caregivers, the mean age was 63.9 (S.D.=13.1); 59% identified as female; 97% identified as White. Regression analyses indicated that caregivers who reported higher levels of trait mindfulness reported significantly less perceived stress (b= -4.38, SE= 0.88, p <.001), lower levels of depression (b= -3.74, SE= 1.10, p = .001), greater caregiver quality of life (b= -9.05, SE=2.12, p < .001), better sleep quality (b= -0.98, SE=0.44, p = 0.03), and lower rates of tobacco use (b= -10.12, SE= 3.43, p =.003). Trait mindfulness was not significantly related to diet, alcohol use, blood pressure, or BMI.

CONCLUSIONS

Higher levels of trait mindfulness are associated with positive mental and physical health measure for caregivers. Future research would benefit from further examining mindfulness-based interventions and their impacts in mitigating the negative toll of caregiving in the context of cancer.

Tridentate imidazole-based Schiff base metal complexes: molecular docking, structural and biological studies

A novel Schiff base was synthesized by the condensation of imidazole-2-carboxaldehyde with l-histidine in an equimolar ratio. The prepared Schiff base was characterized by elemental analysis and spectral characterization techniques. It was then complexed with a series of 3-d metal(II) ions like manganese, iron, cobalt, nickel, copper and zinc. The coordination properties, nature of bonding and stability of the complexes were deduced from elemental analysis, IR, UV-vis, ¹H NMR, mass, electronic spectra, magnetic, conductivity and thermogravimetric analysis. IR studies support the tridentate behaviour of Schiff base as well as its coordination to the central metal ion through an azomethine nitrogen, deprotonated carboxylic oxygen and imidazole ring nitrogen atoms of histidine. The electronic spectra and magnetic moment data demonstrate that the complexes have an octahedral geometry, except zinc complex, which has a tetrahedral geometry. In vitro antimicrobial activity of the synthesized compounds has been shown to exhibit excellent antibacterial and antifungal activities. The antibacterial property of the prepared Schiff base was further confirmed by conducting a docking study of target proteins involved in the antibacterial mechanism.Communicated by Ramaswamy H. Sarma.

A training model to teach early management of priapism

BACKGROUND

Ischaemic priapism is a urological emergency with early treatment required to prevent irreversible loss of erectile function. Corporal aspiration is the first step in management. Currently, there are no satisfactory training models to develop skills in a controlled environment. We have therefore developed a novel training model to teach trainees the steps of penile aspiration in a safe and representative way.

MATERIALS AND METHODS

We have developed a priapism model using an old catheterisation teaching model. Face validity of the model was assessed by participants and experienced urologists teaching on a urology boot camp. All had managed at least 5 cases of actual priapism. Responses were reported using a 5-point Likert Scale. Data were analysed using IBM SPSS Statistics V25. The intra-class correlation was calculated using a «One-way Random model».

RESULTS

Eleven urologists and seven trainees participated in the evaluation. The model appearance was reported as the best simulation trait of the priapism model. Tactile feedback from needle insertion for aspiration was also felt to be realistic with 72.6% reporting it as «Good» or «very good» and 85.7% reported the model to be realistic for needle insertion. Intra-class correlation amongst experts was 0.552. Majority of trainees (83.3%) reported a realistic simulation. All evaluators agreed or strongly agreed that the model provided a good simulated experience that would be useful in training.

CONCLUSION

Our model provides a realistic simulation of corporal aspiration. It can be used repeatedly. Overall, the proposed model appears to be a promising tool for training junior doctors in the initial management of ischaemic priapism.

Mechanisms of Atomization from Rotary Dental Instruments and Its Mitigation

Since the onset of coronavirus disease 2019, the potential risk of dental procedural generated spray emissions (including aerosols and splatters), for severe acute respiratory syndrome coronavirus 2 transmission, has challenged care providers and policy makers alike. New studies have described the production and dissemination of sprays during simulated dental procedures, but findings lack generalizability beyond their measurements setting. This study aims to describe the fundamental mechanisms associated with spray production from rotary dental instrumentation with particular focus on what are currently considered high-risk components-namely, the production of small droplets that may remain suspended in the room environment for extended periods and the dispersal of high-velocity droplets resulting in formites at distant surfaces. Procedural sprays were parametrically studied with variables including rotation speed, burr-to-tooth contact, and coolant premisting modified and visualized using high-speed imaging and broadband or monochromatic laser light-sheet illumination. Droplet velocities were estimated and probability density maps for all laser illuminated sprays generated. The impact of varying the coolant parameters on heating during instrumentation was considered. Complex structured sprays were produced by water-cooled rotary instruments, which, in the worst case of an air turbine, included droplet projection speeds in excess of 12 m/s and the formation of millions of small droplets that may remain suspended. Elimination of premisting (mixing of coolant water and air prior to burr contact) resulted in a significant reduction in small droplets, but radial atomization may still occur and is modified by burr-to-tooth contact. Spatial probability distribution mapping identified a threshold for rotation speeds for radial atomization between 80,000 and 100,000 rpm. In this operatory mode, cutting efficiency is reduced but sufficient coolant effectiveness appears to be maintained. Multiple mechanisms for atomization of fluids from rotatory instrumentation exist, but parameters can be controlled to modify key spray characteristics during the current crisis.

Pre-Flight Calibration of the Mars 2020 Rover Mastcam Zoom (Mastcam-Z) Multispectral, Stereoscopic Imager

The NASA Perseverance rover Mast Camera Zoom (Mastcam-Z) system is a pair of zoomable, focusable, multi-spectral, and color charge-coupled device (CCD) cameras mounted on top of a 1.7 m Remote Sensing Mast, along with associated electronics and two calibration targets. The cameras contain identical optical assemblies that can range in focal length from 26 mm ( 25.5 ∘ × 19.1 ∘ FOV ) to 110 mm ( 6.2 ∘ × 4.2 ∘ FOV ) and will acquire data at pixel scales of 148-540 μm at a range of 2 m and 7.4-27 cm at 1 km. The cameras are mounted on the rover's mast with a stereo baseline of 24.3 ± 0.1  cm and a toe-in angle of 1.17 ± 0.03 ∘ (per camera). Each camera uses a Kodak KAI-2020 CCD with 1600 × 1200 active pixels and an 8 position filter wheel that contains an IR-cutoff filter for color imaging through the detectors' Bayer-pattern filters, a neutral density (ND) solar filter for imaging the sun, and 6 narrow-band geology filters (16 total filters). An associated Digital Electronics Assembly provides command data interfaces to the rover, 11-to-8 bit companding, and JPEG compression capabilities. Herein, we describe pre-flight calibration of the Mastcam-Z instrument and characterize its radiometric and geometric behavior. Between April 26 t h and May 9 t h , 2019, ∼45,000 images were acquired during stand-alone calibration at Malin Space Science Systems (MSSS) in San Diego, CA. Additional data were acquired during Assembly Test and Launch Operations (ATLO) at the Jet Propulsion Laboratory and Kennedy Space Center. Results of the radiometric calibration validate a 5% absolute radiometric accuracy when using camera state parameters investigated during testing. When observing using camera state parameters not interrogated during calibration (e.g., non-canonical zoom positions), we conservatively estimate the absolute uncertainty to be < 10 % . Image quality, measured via the amplitude of the Modulation Transfer Function (MTF) at Nyquist sampling (0.35 line pairs per pixel), shows MTF Nyquist = 0.26 - 0.50 across all zoom, focus, and filter positions, exceeding the > 0.2 design requirement. We discuss lessons learned from calibration and suggest tactical strategies that will optimize the quality of science data acquired during operation at Mars. While most results matched expectations, some surprises were discovered, such as a strong wavelength and temperature dependence on the radiometric coefficients and a scene-dependent dynamic component to the zero-exposure bias frames. Calibration results and derived accuracies were validated using a Geoboard target consisting of well-characterized geologic samples.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s11214-021-00795-x.

Let's talk virtual! Online focus group facilitation for the modern researcher

BACKGROUND

Focus group discussions typically involve face-to-face facilitation. There is growing interest in utilising digital technologies to facilitate aspects of focus group research. To date, no study in the pharmacy profession has comprehensively described and evaluated a fully virtual process to focus group research, from recruitment to reimbursement.

OBJECTIVE(S)

This study aims to describe an entirely online approach to: recruiting for and facilitating virtual focus group discussions, and reimbursement of participants within the pharmacy profession. Specifically, our objectives were to identify 1) the dropout rate, 2) the geographic diversity of focus group participants, and 3) the occurrence of technological issues.

METHOD

Traditional face-to-face focus group recruitment and facilitation methods were adapted, pre-tested, and conducted using online platforms for advertising, participant expressions of interest, participant consent, focus group facilitation, and participant reimbursement. Populations of interest included community pharmacists, specialty practice pharmacists, hospital pharmacists, and pharmacy assistants and technicians across Australia.

RESULTS

Of the 153 potential participants who either completed an expression of interest to participate (135/153) or agreed to participate after direct contact (18/153), 59 confirmed that they would attend the focus group discussion (39%); 49 of the 59 (dropout rate: 17%) participated in one of eight focus groups. Collectively, there was representation from all States and Territories in Australia, as well as representation in each of the populations of interest. Three of 49 participants (6%) experienced minor technological issues during the process; no participant encountered major technological issues that precluded successful participation.

CONCLUSIONS

Our study demonstrates that an entirely online approach to focus group methodology is possible, has the potential to recruit demographically and geographically-diverse participants with low dropout rates, and can be successfully conducted with minimal technological issues. Despite the recent COVID-19 pandemic making physical focus group facilitation untenable, this fully-online approach enables research to be completed uninterrupted.

Ultrasound-guided Fascia Iliaca Plane Block for the treatment of donor site pain in the burn injured patient: a randomized control trial

Burn injuries requiring surgical intervention often result in split- thickness skin grafting procedures, with donor skin frequently harvested from the patient's anterolateral thigh. The donor site is often reported as the primary site of post-operative pain due to the damage sustained to localised nociceptors.A randomised control trial was undertaken to evaluate the impact an ultrasound-guided regional nerve block would have on patient reported pain scores in donor site wounds, and associated rescue analgesia consumption. Twenty participants requiring split-skin grafting for burn injuries of <15% total body surface area were enrolled from a tertiary burns unit and randomised to control (10 participants) or intervention group (10 participants). The intervention group received the addition of an ultrasound-guided facia iliaca plane block prior to their surgery. Primary outcome was pain score in the donor site during the postoperative phase; while secondary outcome was pain on day 1 post-surgery as measured by the numeric pain score (0-10). During the post-operative phase, the intervention group had a significantly lower median donor site pain score of 0 (interquartile range (IQR) 0 - 0), compared to the control group median 6 (IQR 4 - 7) (p < 0.001). Day 1 post-surgery the intervention group had a median pain score of 0 (IQR 0 - 4) compared to control group median 4.5 (IQR 2 - 6) (p= 0.043).The study findings demonstrated that regional anaesthesia was an effective way to reduce pain scores and requirement for additional analgesics during the postoperative phase.

Stakeholders' Perceptions of Factors Influencing the Use of Take-Home-Naloxone

Background and Aims: Opioid associated death and overdose is a growing burden in societies all over the world. In recent years, legislative changes have increased access to naloxone in the take-home setting for use by patients with a substance use disorder and bystanders, to prevent opioid overdose deaths. However, few studies have explored the factors influencing the uptake by its multiple stakeholders. The aim of this scoping review was to explore the factors influencing the use of take-home naloxone from the perspectives of different stakeholders. Methods: A scoping review methodology was adopted with a systematic search of databases EMBASE, MEDLINE and PubMed. A variation of the search words “naloxone”, “opioid” and “overdose” were used in each database. The articles were screened according to the predetermined inclusion/exclusion criteria and categorized based on their key perspective or target population. Results: The initial database search yielded a total of 1483 articles. After a series of screening processes, 51 articles were included for analysis. Two key stakeholder perspectives emerged: patients and bystanders (n = 36), and healthcare professionals (n = 15). Within the patient and bystander group, a strong consensus arose that there were positive outcomes from increased access to take-home naloxone and relevant training programs. Despite these positive outcomes, some healthcare professionals were concerned that take-home naloxone would encourage high-risk opioid use. Conclusion: Take-home naloxone is slowly being introduced into community practice, with a sense of enthusiasm from patients and bystanders. There are still a number of barriers that need to be addressed from healthcare professionals’ perspective. Future research should be aimed at emergency care professionals outside of the US, who are most experienced with naloxone and its potential impact on the community.