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Diagnosis in psychiatry faces familiar challenges. Validity and utility remain elusive, and confusion regarding the fluid and arbitrary border between mental health and illness is increasing. The mainstream strategy has been conservative and iterative, retaining current nosology until something better emerges. However, this has led to stagnation. New conceptual frameworks are urgently required to catalyze a genuine paradigm shift.
Methods
We outline candidate strategies that could pave the way for such a paradigm shift. These include the Research Domain Criteria (RDoC), the Hierarchical Taxonomy of Psychopathology (HiTOP), and Clinical Staging, which all promote a blend of dimensional and categorical approaches.
Results
These alternative still heuristic transdiagnostic models provide varying levels of clinical and research utility. RDoC was intended to provide a framework to reorient research beyond the constraints of DSM. HiTOP began as a nosology derived from statistical methods and is now pursuing clinical utility. Clinical Staging aims to both expand the scope and refine the utility of diagnosis by the inclusion of the dimension of timing. None is yet fit for purpose. Yet they are relatively complementary, and it may be possible for them to operate as an ecosystem. Time will tell whether they have the capacity singly or jointly to deliver a paradigm shift.
Conclusions
Several heuristic models have been developed that separately or synergistically build infrastructure to enable new transdiagnostic research to define the structure, development, and mechanisms of mental disorders, to guide treatment and better meet the needs of patients, policymakers, and society.
In 2021, approximately 15,000 men in Germany died from prostate cancer (PCa). The national health policy is considering shifting from annual digital rectal examination (DRE)-based screening to an age-related prostate-specific antigen (PSA)-based risk-adapted and organized screening strategy. Our research investigated the cost–utility of the current DRE-based strategy versus organized age-related PSA-based risk-adaptive PCa screening strategies in Germany.
Methods
We adapted the Swedish Prostata model to the German context, recalibrating it with PCa clinical and epidemiological data from the national and state registries. The model includes preclinical and clinical disease health states defined by tumor, nodal, and metastatic stages and Gleason scores, and assumes that the benefits of screening arise from stage shift. We assessed the cost–utility of 14 strategies, ranging from no screening to DRE, and age-related, PSA-based, risk-adapted screening. Health state utility values and test characteristics were sourced from the literature. Inpatient and outpatient care costs were derived from the German diagnostic-related groups and uniform-based valuation systems.
Results
Among all strategies evaluated and compared with no screening, the “DRE only” strategy led to substantial overdiagnosis, the highest incremental cost, and minimal quality-adjusted life years (QALY) gains. PSA testing starting at 50 to 60 years with reflex MRI for PSA greater than 3 ng/mL cases followed by combined systemic and targeted biopsy reduced the number of biopsies and overdiagnosis by 75 percent and 26 percent, albeit for fewer QALYs and higher costs (dominated) than the same strategy without reflex MRI. The PSA-based risk-adaptive strategy, starting at 50 to 60 years without reflex MRI, demonstrated an 85 percent probability of being cost effective within the EUR30,000 (USD32,211) to EUR100,000 (USD107,369)/QALY willingness-to-pay range.
Conclusions
While Germany’s HTA emphasizes clinically added benefits and health-related quality of life, cost-effectiveness analysis substantiates this evidence. As a standalone early detection tool, DRE leads to substantial overdiagnosis, unnecessary biopsies, and increased healthcare costs. Overall, this study demonstrated the importance of age-related PSA risk-adaptive PCa screening. The value of MRI deserves further investigation, considering MRI’s positive effect on screening acceptability.
Dysfunctional changes in the glutamatergic system play an important role in the pathophysiology of depression. Glutamate regulates various neuronal function, such as nerve migration, excitability, plasticity, as well as long-term potentiation and long-term synaptic depression. Failures in this process might cause emotional/cognitive changes associated with stress-induced depressive symptoms, a part of our current understanding of the pathophysiology of depression. These changes might be related to deviations in biochemical blood parameters, but also to volatile organic compounds (VOCs) measured in breath.
Objectives
1) To replicate our previous finding that concentration of volatile organic compounds in expiratory breath gas and metabolites derived from MR spectroscopy distinguish unmedicated depressed patients from healthy participants, (2) to determine whether the amount of these VOCs is associated with severity of depression and anxiety, and (3) to correlate breath-VOC-content with glutamatergic neurotransmission and energy metabolism derived from MR spectroscopy.
Methods
25 antidepressant-free patients with major depression according to DSM V (18-65 years of age) are recruited from our out- and inpatient clinics. The controls will consist of 25 healthy age-and-sex-matched participants. Breath gas analyses will be carried out at awakening, and 30 and 60 minutes thereafter, and at 5pm using PTR-TOF-MS with direct on time measurement through a special sampler. A 7 Tesla Siemens Terra MRI scanner will be used to undertake spectroscopic measurements. Concentrations of glutamate and β-hydroxybutyrate levels in the pregenual and dorsal anterior cingulate gyrus will subsequently be assessed.
Results
Statistical analysis for differences between groups corrected for multiple measurements will be carried out. Concentration of VOCs will be correlated with brain metabolism and severity of symptoms.
Conclusions
VOCs in breath are proposed to be an efficient and non-invasive marker for depression-related biochemical changes related to disease severity, and eventually useful for personalized treatment planning.
Agitation in Alzheimer’s dementia (AAD) is prevalent, distressing, and burdensome. Medications for agitation are commonly prescribed off-label, although use is hindered by safety and tolerability concerns. This pooled analysis evaluates the safety and tolerability of brexpiprazole in patients with AAD.
Methods:
Data were pooled from three Phase 3, 12-week, placebo-controlled trials (NCT01862640, NCT01922258, NCT03548584) (overall, and by brexpiprazole dose). The primary objective of each trial was to assess the efficacy of brexpiprazole on agitation. Safety was a secondary objective.
Results:
658 patients were randomized to brexpiprazole (0.5–3 mg/day, depending on the trial; n=655 treated), and 389 patients were randomized to placebo (n=388 treated). Mean baseline age was 73.5–74.2 years, and mean time since diagnosis of Alzheimer’s disease was 28.2–35.6 months. The pooled incidence of treatment-emergent adverse events (TEAEs) was 51.1% with brexpiprazole, with no notable differences between doses, and 45.9% with placebo. The incidence of serious TEAEs was 6.4% (brexpiprazole) versus 4.1% (placebo), and the incidence of TEAEs leading to discontinuation was 6.3% versus 3.4%, respectively. TEAEs that occurred in ≥2% of patients receiving brexpiprazole and more than in placebo-treated patients were insomnia (3.7% versus 2.8%), somnolence (3.4% versus 1.8%), nasopharyngitis (2.7% versus 2.6%), and urinary tract infection (2.6% versus 1.5%). Other TEAEs of interest included falls (1.7% versus 2.6%) and sedation (0.3% versus 0.0%). TEAE categories of interest included extrapyramidal symptom (EPS)-related TEAEs (5.3% versus 3.1%), cardiovascular TEAEs (3.7% versus 2.3%), and cerebrovascular TEAEs (0.5% versus 0.3%). The mean change from baseline to last visit in Mini–Mental State Examination score was 0.21 (brexpiprazole) and 0.14 (placebo). Six patients receiving brexpiprazole (0.9%) and one patient receiving placebo (0.3%) died; none of the deaths was considered related to brexpiprazole.
Conclusion:
Based on pooled data, brexpiprazole was well tolerated in patients with AAD, and had a clinical safety profile consistent with that of brexpiprazole in other indications. Patients receiving brexpiprazole had a similar incidence of sedation, EPS events, falls, cardiovascular events, and cerebrovascular events compared with placebo, and no worsening of cognition. The incidence of death was low, and no deaths were considered related to study treatment.
Aripiprazole is the third generation Antipsychotic, and Dopamine serotonin system stabiliser.It is partial agonist at D2 and 5 HT1 A and antagonist at 5 HT2.Most commonly seen adverse effects are Akathesia, fatugue,insomnia and headache the major advanatage is less propensity for extrapyramidal side effects and lmetabolic side eefects.
Objectives
To report a case of Schizophrenia treated with Aripiprazole 15mg/day developiing occular gyric crisis which was tratment resistant.
Methods
We administered Electroconvulsvive therapy, bidirectional brief pulse constant current 8 ECTS, under General anesthesia with medical fitness .
Results
Patient Showed complete resolution of Dystonia after second ECTs and Showed improvment in Pyschosis Parameterd. Assessment using Naranjo Protocol made.
Conclusions
Electroconvulsive therapy therapy is viable alternative to manage Dystonia when medical treatment fails
Several guidelines have been produced for the management of nutrition in patients with head and neck cancer. However, no systematic evaluation of the quality of these guidelines has been performed to date.
Method
A comprehensive search was conducted up to August 2020. The quality of guidelines was assessed by four independent reviewers using the Appraisal of Guidelines for Research and Evaluation, 2nd edition.
Results
Nine guidelines were assessed for critical evaluation. Only two guidelines were classified as ‘high quality’. The ‘scope and purpose’ domain achieved the highest mean score (75.5 ± 17.0 per cent), and the lowest domain mean score was ‘applicability’ (37.6 ± 23.0 per cent).
Conclusion
These findings highlight the variability in the methodological quality of guidelines for the management of nutrition in head and neck cancer. These results may help to improve the reporting of future guidelines and guide the selection for use in clinical practice.
There is a limited literature available showing mental health burden among adolescents following cyberbullying.
Objectives
Aim is to evaluate the association of low mood and suicidality amongst cyberbullied adolescents.
Methods
A study on CDC National Youth Risk Behavior Surveillance (YRBS) (1991-2017). Responses from adolescence related to cyberbullying and suicidality were evaluated. Chi-square and mix-effect multivariable logistic regression analysis was performed to find out the association of cyberbullying with sadness/hopelessness, suicide consideration, plan, and attempts.
Results
A total of 10,463 adolescents, 14.8% of adolescents faced cyberbullying a past year. There was a higher prevalence of cyberbullying in youths aged 15-17 years (25 vs 26 vs 23%), which included more females to males (68 vs 32%).(p<0.0001) Caucasians (53%) had the highest number of responses to being cyberbullied compared to Hispanics (24%), African Americans (11%).(p<0.0001) There was an increased prevalence of cyberbullied youths with feelings of sadness/hopelessness (59.6 vs 25.8%), higher numbers considering suicide (40.4 vs 13.2%), suicide plan (33.2 vs 10.8%), and multiple suicidal attempts in comparison to non-cyberbullied.(p<0.0001) On regression analysis, cyberbullied adolescence had a 155% higher chance of feeling sad and hopeless [aOR=2.55; 95%CI=2.39-2.72], considered suicide [1.52 (1.39-1.66)], and suicide plan [1.24 (1.13-1.36)].
Conclusions
In our study, cyberbullying was associated with negative mental health outcomes. Further research is warranted to examine the impact and outcomes of cyberbullying amongst adolescents and guiding the policies to mitigate the consequences.
ABSTRACT IMPACT: This work will inform the ongoing development of adaptive capacity and preparedness of the CTSA Program and other clinical and translational research organizations in their quest of improving processes that drive outcomes and impacts, shaping effective programs and services, and strengthening their emergency readiness and sustainability. OBJECTIVES/GOALS: -Share the progress and preliminary findings of an ‘Adaptive Capacity and Preparedness of CTSA Hubs’ CTSA Working Group; -Improve our awareness and understanding of the efficient and effective changes helping CTSA hubs build robust capacity to address METHODS/STUDY POPULATION: A multi-case study including: - Triangulating multiple sources of information and mixed methods (survey/interviews of research administrators, researchers, evaluators, and other key stakeholders), literature review, document and M&E system information analysis, and expert review; - Describing CTSA hubs’ experiences as related to research implementation, translation, and support during the time of emergency; - Administering a comprehensive survey of the CTSAs addressing their challenges, lessons learned, and practices that work in various program components/areas. Data collection includes aggregate and cross-sectional data, with representation based on CTSA size, maturity, and population density. RESULTS/ANTICIPATED RESULTS: The described approach shows sound promise to investigate and share strategies and best practices for building adaptive capacity and preparedness of CTSAs -- across various scientific sectors, translational research spectrum, and the goals outlined by NCATS for the CTSA program. The anticipated results of this research will include the identified/shared innovative solutions and lessons learned for this rapidly emerging, high-priority clinical and translational science issue. ‘High-quality lessons learned’ are those that represent principles extrapolated from multiple sources and triangulated to increase transferability to new contexts and situations. DISCUSSION/SIGNIFICANCE OF FINDINGS: The project provides useful knowledge and tools to research organizations and stakeholders across multiple disciplines -- for mitigating the impact of the COVID-19 disaster via effective adjusting programs, practices, and processes, and building capacity for future successful, ‘emergency ready and responsive’ research and training.
Virtual reality (VR) is a promising tool with the potential to enhance care of cognitive and affective disorders in the aging population. VR has been implemented in clinical settings with adolescents and children; however, it has been less studied in the geriatric population.
Objective:
The objective of this study is to determine the existing levels of evidence for VR use in clinical settings and identify areas where more evidence may guide translation of existing VR interventions for older adults.
Design and measurements:
We conducted a systematic review in PubMed and Web of Science in November 2019 for peer-reviewed journal articles on VR technology and its applications in older adults. We reviewed article content and extracted the number of study participants, study population, goal of the investigation, the level of evidence, and categorized articles based on the indication of the VR technology and the study population.
Results:
The database search yielded 1554 total results, and 55 articles were included in the final synthesis. The most represented study design was cross-sectional, and the most common study population was subjects with cognitive impairment. Articles fell into three categories for VR Indication: Testing, Training, and Screening. There was a wide variety of VR environments used across studies.
Conclusions:
Existing evidence offers support for VR as a screening and training tool for cognitive impairment in older adults. VR-based tasks demonstrated validity comparable to some paper-based assessments of cognition, though more work is needed to refine diagnostic specificity. The variety of VR environments used shows a need for standardization before comparisons can be made across VR simulations. Future studies should address key issues such as usability, data privacy, and confidentiality. Since most literature was generated from high-income countries (HICs), it remains unclear how this may be translated to other parts of the world.
We used social network analysis (SNA) to study the novel coronavirus (COVID-19) outbreak in Karnataka, India, and to assess the potential of SNA as a tool for outbreak monitoring and control. We analysed contact tracing data of 1147 COVID-19 positive cases (mean age 34.91 years, 61.99% aged 11–40, 742 males), anonymised and made public by the Karnataka government. Software tools, Cytoscape and Gephi, were used to create SNA graphics and determine network attributes of nodes (cases) and edges (directed links from source to target patients). Outdegree was 1–47 for 199 (17.35%) nodes, and betweenness, 0.5–87 for 89 (7.76%) nodes. Men had higher mean outdegree and women, higher mean betweenness. Delhi was the exogenous source of 17.44% cases. Bangalore city had the highest caseload in the state (229, 20%), but comparatively low cluster formation. Thirty-four (2.96%) ‘super-spreaders’ (outdegree ⩾ 5) caused 60% of the transmissions. Real-time social network visualisation can allow healthcare administrators to flag evolving hotspots and pinpoint key actors in transmission. Prioritising these areas and individuals for rigorous containment could help minimise resource outlay and potentially achieve a significant reduction in COVID-19 transmission.
Primary pests such as Rhyzoperta dominica may increase the contents of dockage, dust, and frass in grain mass. Although it has been suggested that frass can affect the population growth of stored product pests and ecological interactions among primary and secondary pests in stored grain, this has not been validated experimentally. Therefore, this work experimentally tested the hypothesis that R. dominica wheat frass may support population increases in secondary pests such as Tribolium confusum, T. castaneum, and Oryzaephilus surinamensis for the first time. The effect of frass on secondary pest performance was compared with the effects of various physical qualities of wheat grain (i.e., intact grain kernels, grain fragments, flour, grain + frass) and an artificially enriched control diet (milled wheat kernels, oat flakes, and yeast). The results showed that the clean intact grain kernels did not support the population growth of any tested species, and the nutrient-rich control diet provided the best support. Frass was a significantly better food medium for O. surinamensis and T. castaneum than flour or cracked grain, while T. confusum performed equally well on flour and frass. Our results showed that in terms of food quality and suitability for the tested species, frass occupied an intermediate position between the optimized breeding diet and simple uniform cereal diets such as cracked grain or flour. The results suggest that (i) the wheat frass of primary pest R. dominica is a riskier food source for the development of the tested secondary pests than intact or cracked wheat grain or flour; (ii) frass has the potential to positively influence interspecific interactions between R. dominica and the tested secondary pests; and (iii) wheat grain should be cleaned if increases in R. dominica populations and/or accumulated frass are detected.
OBJECTIVES/GOALS: People living with HIV, despite antiretroviral therapy (ART), have increased burden of inflammatory and aging-related comorbidities such as periodontitis. Oral microbiota have been linked to periodontitis, but not in the context of HIV. We aim to compare relationships between the oral microbiome and periodontal disease in HIV+ vs healthy controls. METHODS/STUDY POPULATION: In an ongoing cohort study we have been recruiting pre- and post-menopausal women with HIV+ on ART for ≥6 months and HIV- controls matched by menopausal status (target n = 30 per arm; currently HIV+: n = 30 post- and 9 pre-M; HIV-: n = 15 post- and 6 pre-M). Patients age <18 or on antibiotics within 3 mos., except prophylaxis, are excluded. Patients provide saliva, then subgingival plaque collection during a dental examination through scaling from six index teeth. Standard CDC/AAP classifications of periodontitis are used. We will perform 16S rRNA and ITS sequencing to profile bacterial and fungal communities in saliva and plaque. Linear mixed effect regression and differential abundance analyses will be used to identify microbial and mycobial oral signatures of periodontal disease severity in HIV+ and HIV- populations. RESULTS/ANTICIPATED RESULTS: We found a markedly high prevalence of severe periodontal disease in HIV+ women despite ART (59%, compared to 11% in HIV- controls). In post-menopausal women with HIV, saliva bacterial α- and β-diversity in the saliva differed significantly with periodontal disease severity. Fungal α-diversity was also significantly lower in plaque from teeth with severe loss of tissue attachment (CAL ≥4 mm). We identified bacterial and fungal taxa significantly enriched in post-menopausal HIV+ women with severe compared to no or mild periodontitis. We hypothesize, similarly, associations between the oral microbiome and periodontitis in HIV- controls. However, we expect overall diversity metrics to be significantly altered in HIV+ compared to HIV- patients, indicating long-term dysbiosis despite treatment with ART. DISCUSSION/SIGNIFICANCE OF IMPACT: Contrasting associations between the oral microbiome and periodontal disease with respect to HIV will provide evidence for the role of microbiota in accelerated aging phenotype caused by HIV. Our results would also provide rationale for interventions targeting co-morbidities in people living with HIV to account for both inflammation and dysbiosis.
Introduction: Epidemiologic and modeling studies suggest that between 45 and 70% of individuals with chronic hepatitis C virus (HCV) infection in Canada remain undiagnosed. The Canadian Association for the Study of the Liver (CASL) recommends one-time screening of baby boomers (1945-1975). Screening programs in the US have shown a very high prevalence of previously undiagnosed HCV among patients seen in the emergency department (ED). We sought to assess the feasibility of implementing a targeted birth-cohort HCV screening program in a Canadian ED setting. Methods: Patients born from 1945 to 1975 presenting to the ED of a downtown Toronto hospital were offered HCV testing. Patients with life-threatening conditions, unable to provide verbal consent in English or intoxication were excluded. Blood samples were collected by finger prick on Dried Blood Spot (DBS) collection cards and tested for anti-HCV antibody with reflex to HCV RNA. Patients with positive HCV RNA were referred to a liver specialist. Results: During a 27-month period (July 2017 - Sept 2019), 8363 patients in the birth cohort presented to the ED during daytime hours. 80% (6714) met eligibility criteria, and 48.4% (3247) were offered testing. Screening was performed by non-medical staff (mean 8/day, median spots on DBS 4). 345 (10.6%) had been previously tested, and 639 (19.7%) declined. 2136 (65.8%) patients underwent testing: median age 58.4 years (40-82), 1117 male (52.3%). Of these, 45 patients (2.1%; 95% CI 1.5%-2.7%) were anti-HCV positive: 32 (76.2%) were HCV RNA positive, 10 (23.8%) negative and 3 not done due to inadequate DBS sample. 26 patients (81.3%) were linked to care and 3 (9.4%) lost to follow-up. HCV prevalence in the ED was significantly higher than the general Canadian population (2.1% vs 0.7%; p < 0.0001) but much lower than reported rates in American EDs (2.1% vs 10.3%; p < 0.0001). Conclusion: Acceptance of HCV screening in the ED birth cohort was high and easily performed using DBS to ensure the majority of positive samples were tested for HCV RNA. Challenges included implementation that limited number of people tested, and linkage to care for HCV positive patients. HCV prevalence among this ED birth cohort was higher than the general population but lower than seen in the ED in the US. This may in part be due to exclusion of individuals with more severe medical issues, refusal by higher risk subgroups, or population and healthcare system differences between countries.
Familial risk for psychosis may interact with environmental risk factors.
Objectives
We are studying a large birth cohort of children of mothers with psychotic disorders, themselves at high risk of developing a psychotic illness, to understand the developmental aetiology of psychotic illness.
Aims
Our aim is to examine whether exposure to environmental stressors in childhood, including timing of exposure, is a risk factor for psychotic illness, independent of familial liability. Specificity to maternal schizophrenia is explored.
Methods
We used record-linkage across state-wide registers (midwives, psychiatric, child protection and mortality, among others) to identify 15,486 offspring born in Western Australia 1980–2001 to mothers with a lifetime history of psychotic illness (case children) and compared them with 452,459 offspring born in the same period to mothers with no known psychiatric history (comparison children).
Results
A total of 4.1% of case children had developed a psychotic illness compared to 1.1% of comparison children. Exposure to environmental risk factors including obstetric complications, aboriginality, lower socioeconomic status, discontinuity in parenting and childhood abuse significantly increased risk of psychotic illness in offspring. Length and age at time of discontinuity in parenting impacted on risk. At the same time, case children were also significantly more likely than comparison children to be at risk of experiencing these adverse life events.
Conclusions
Exposure to environmental stressors is associated with psychotic illness, and timing of exposure is important. However, children already at increased familial risk for psychotic illness are also at increased risk of experiencing these environmental stressors.
Disclosure of interest
The authors have not supplied their declaration of competing interest.
As the pace of biomedical innovation rapidly evolves, there is a need to train researchers to understand regulatory science challenges associated with clinical translation. We describe a pilot course aimed at addressing this need delivered jointly through the Mayo Clinic Center for Clinical and Translational Science and the Yale-Mayo Center for Excellence in Regulatory Science and Innovation. Course design was informed by the Association for Clinical and Translational Science’s Regulatory Science Working Group’s competencies. The course used didactic, case-, and problem-based learning sessions to expose students to regulatory science concepts. Course evaluation focused on student satisfaction and learning. A total of 25 students enrolled in the first two course deliveries. Students represented several disciplines and career stages, from predoctoral to faculty. Students reported learning “an incredible amount” (7/19, 36.8%) or “a lot” (9/19, 47.4%); this was reflected in individual coursework and their course evaluations. Qualitative feedback indicated that assignments that challenged them to apply the content to their own research were appreciated. The heterogeneity of students enrolled, coupled with assessments and course evaluations, supports the statement that there is a growing need and desire for regulatory science-focused curricula. Future research will determine the long-term impact.
Thermal fluctuations have been shown to influence the thinning dynamics of planar thin liquid films, bringing predicted rupture times closer to experiments. Most liquid films in nature and industry are, however, non-planar. Thinning of such films not just results from the interplay between stabilizing surface tension forces and destabilizing van der Waals forces, but also from drainage due to curvature differences. This work explores the influence of thermal fluctuations on the dynamics of thin non-planar films subjected to drainage, with their dynamics governed by two parameters: the strength of thermal fluctuations, $\unicode[STIX]{x1D703}$, and the strength of drainage, $\unicode[STIX]{x1D705}$. For strong drainage ($\unicode[STIX]{x1D705}\gg \unicode[STIX]{x1D705}_{tr}$), we find that the film ruptures due to the formation of a local depression called a dimple that appears at the connection between the curved and flat parts of the film. For this dimple-dominated regime, the rupture time, $t_{r}$, solely depends on $\unicode[STIX]{x1D705}$, according to the earlier reported scaling, $t_{r}\sim \unicode[STIX]{x1D705}^{-10/7}$. By contrast, for weak drainage ($\unicode[STIX]{x1D705}\ll \unicode[STIX]{x1D705}_{tr}$), the film ruptures at a random location due to the spontaneous growth of fluctuations originating from thermal fluctuations. In this fluctuations-dominated regime, the rupture time solely depends on $\unicode[STIX]{x1D703}$ as $t_{r}\sim -(1/\unicode[STIX]{x1D714}_{max})\ln (\sqrt{2\unicode[STIX]{x1D703}})^{\unicode[STIX]{x1D6FC}}$, with $\unicode[STIX]{x1D6FC}=1.15$. This scaling is rationalized using linear stability theory, which yields $\unicode[STIX]{x1D714}_{max}$ as the growth rate of the fastest-growing wave and $\unicode[STIX]{x1D6FC}=1$. These insights on if, when and how thermal fluctuations play a role are instrumental in predicting the dynamics and rupture time of non-flat draining thin films.
To examine factors that influence decision-making, preferences, and plans related to advance care planning (ACP) and end-of-life care among persons with dementia and their caregivers, and examine how these may differ by race.
Design:
Cross-sectional survey.
Setting:
13 geographically dispersed Alzheimer’s Disease Centers across the United States.
Participants:
431 racially diverse caregivers of persons with dementia.
Measurements:
Survey on “Care Planning for Individuals with Dementia.”
Results:
The respondents were knowledgeable about dementia and hospice care, indicated the person with dementia would want comfort care at the end stage of illness, and reported high levels of both legal ACP (e.g., living will; 87%) and informal ACP discussions (79%) for the person with dementia. However, notable racial differences were present. Relative to white persons with dementia, African American persons with dementia were reported to have a lower preference for comfort care (81% vs. 58%) and lower rates of completion of legal ACP (89% vs. 73%). Racial differences in ACP and care preferences were also reflected in geographic differences. Additionally, African American study partners had a lower level of knowledge about dementia and reported a greater influence of religious/spiritual beliefs on the desired types of medical treatments. Notably, all respondents indicated that more information about the stages of dementia and end-of-life health care options would be helpful.
Conclusions:
Educational programs may be useful in reducing racial differences in attitudes towards ACP. These programs could focus on the clinical course of dementia and issues related to end-of-life care, including the importance of ACP.
Shunt-related adverse events are frequent in infants after modified Blalock–Taussig despite use of acetylsalicylic acid prophylaxis. A higher incidence of acetylsalicylic acid-resistance and sub-therapeutic acetylsalicylic acid levels has been reported in infants. We evaluated whether using high-dose acetylsalicylic acid can decrease shunt-related adverse events in infants after modified Blalock–Taussig.
Methods
In this single-centre retrospective cohort study, we included infants ⩽1-year-old who underwent modified Blalock–Taussig placement and received acetylsalicylic acid in the ICU. We defined acetylsalicylic acid treatment groups as standard dose (⩽7 mg/kg/day) and high dose (⩾8 mg/kg/day) based on the initiating dose.
Results
There were 34 infants in each group. Both groups were similar in age, gender, cardiac defect type, ICU length of stay, and time interval to second stage or definitive repair. Shunt interventions (18 versus 32%, p=0.16), shunt thrombosis (14 versus 17%, p=0.74), and mortality (9 versus 12%, p=0.65) were not significantly different between groups. On multiple logistic regression analysis, single-ventricle morphology (odds ratio 5.2, 95% confidence interval of 1.2–23, p=0.03) and post-operative red blood cells transfusion ⩾24 hours [odds ratio 15, confidence interval of (3–71), p<0.01] were associated with shunt-related adverse events. High-dose acetylsalicylic acid treatment [odds ratio 2.6, confidence interval of (0.7–10), p=0.16] was not associated with decrease in these events.
Conclusions
High-dose acetylsalicylic acid may not be sufficient in reducing shunt-related adverse events in infants after modified Blalock–Taussig. Post-operative red blood cells transfusion may be a modifiable risk factor for these events. A randomised trial is needed to determine appropriate acetylsalicylic acid dosing in infants with modified Blalock–Taussig.