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Bicuspid aortic valve is considered to have a multifactorial origin. Some research suggests a defect in neural crest cell signalling may increase the risk of developing bicuspid aortic valve, and also impact on the proximal conduction system.
Purpose:
To examine electrocardiographic parameters in unselected newborns from the general population diagnosed with bicuspid aortic valve within 30 days after birth.
Methods:
This is a substudy of the Copenhagen Baby Heart Study; a multicentre, prospective, population-based cohort study with prenatal inclusion. Cardiac examination, including transthoracic echocardiography and electrocardiography, were obtained within 30 days after birth. Newborns diagnosed with bicuspid aortic valve were matched 1:4 with newborns with structurally normal hearts based on age, sex, gestational age, weight, and length at examination.
Results:
A total of 127 newborns with bicuspid aortic valve (84 boys, median age 11 days) and 508 controls (336 boys, median age 11 days) were included. Newborns with bicuspid aortic valve had a significantly longer PR-interval (100 vs 96 ms, p = 0.011) and QRS duration (56 vs 54 ms, p = 0.042), and a significantly lower R-wave amplitude in V6 (759 vs 906 µV, p = 0.047) compared to controls. However, when correcting for multiple testing none of the results were significant.
Conclusion:
Newborns from the general population with bicuspid aortic valve demonstrated a slightly longer PR-interval, a longer QRS duration, and a lower maximum R-wave amplitude in V6 than matched controls, although non-significant after correcting for multiple testing. This may represent early signs of conduction abnormalities, but longitudinal follow-up will provide further clarification.
It remains unclear which individuals with subthreshold depression benefit most from psychological intervention, and what long-term effects this has on symptom deterioration, response and remission.
Aims
To synthesise psychological intervention benefits in adults with subthreshold depression up to 2 years, and explore participant-level effect-modifiers.
Method
Randomised trials comparing psychological intervention with inactive control were identified via systematic search. Authors were contacted to obtain individual participant data (IPD), analysed using Bayesian one-stage meta-analysis. Treatment–covariate interactions were added to examine moderators. Hierarchical-additive models were used to explore treatment benefits conditional on baseline Patient Health Questionnaire 9 (PHQ-9) values.
Results
IPD of 10 671 individuals (50 studies) could be included. We found significant effects on depressive symptom severity up to 12 months (standardised mean-difference [s.m.d.] = −0.48 to −0.27). Effects could not be ascertained up to 24 months (s.m.d. = −0.18). Similar findings emerged for 50% symptom reduction (relative risk = 1.27–2.79), reliable improvement (relative risk = 1.38–3.17), deterioration (relative risk = 0.67–0.54) and close-to-symptom-free status (relative risk = 1.41–2.80). Among participant-level moderators, only initial depression and anxiety severity were highly credible (P > 0.99). Predicted treatment benefits decreased with lower symptom severity but remained minimally important even for very mild symptoms (s.m.d. = −0.33 for PHQ-9 = 5).
Conclusions
Psychological intervention reduces the symptom burden in individuals with subthreshold depression up to 1 year, and protects against symptom deterioration. Benefits up to 2 years are less certain. We find strong support for intervention in subthreshold depression, particularly with PHQ-9 scores ≥ 10. For very mild symptoms, scalable treatments could be an attractive option.
Fifty-three tests designed to measure aspects of creative thinking were administered to 410 air cadets and student officers. The scores were intercorrelated and 16 factors were extracted. Orthogonal rotations resulted in 14 identifiable factors, a doublet, and a residual. Nine previously identified factors were: verbal comprehension, numerical facility, perceptual speed, visualization, general reasoning, word fluency, associational fluency, ideational fluency, and a factor combining Thurstone's closure I and II. Five new factors were identified as originality, redefinition, adaptive flexibility, spontaneous flexibility, and sensitivity to problems.
A battery of 32 tests was administered to a sample including 144 Air Force Officer Candidates and 139 Air Cadets. The factor analysis, using Thurstone's complete centroid method and Zimmerman's graphic method of orthogonal rotations, revealed 12 interpretable factors. The non-reasoning factors were interpreted as verbal comprehension, numerical facility, perceptual speed, visualization, and spatial orientation. The factors derived from reasoning tests were identified as general reasoning, logical reasoning, education of perceptual relations, education of conceptual relations, education of conceptual patterns, education of correlates, and symbol substitution. The logical-reasoning factor corresponds to what has been called deduction, but eduction of correlates is perhaps closer to an ability actually to make deductions. The area called induction appears to resolve into three eduction-of-relations factors. Reasoning factors do not appear always to transcend the type of test material used.
The limitations of existing methods for the prediction of swelling behavior of compacted soils are examined. Both the purely theoretical approach and the purely empirical approach are found to be inadequate. The present study is based on a semi-empirical approach in which a model of swelling behavior is developed leading to equations relating swelling potential or swelling pressure of a compacted soil to its plasticity index, clay content and initial molding water content. The model is based on the concepts of the diffuse double layer, modified by introducing empirical constants to account for elastic swelling effects and other limitations involved in the direct application of double layer theory to real soils. The empirical constants are evaluated from the results of experimental investigations carried out on a large number of soil samples representing a wide variation of clay content as well as consistency limits.
It is shown that the predicted values of the swelling potential and swelling pressure based on the proposed model agree closely with the experimental results of this study and those reported in the literature. Furthermore, the equations developed in this study are of a more general nature and appear to be applicable to a larger range of soil types than those previously published.
The process of deformation in clays is visualized as the combination of recoverable deformation resulting from bending and rotation of individual particles and irrecoverable deformation due to relative movement between adjacent particles at their points of contact. The relative movement between particles is treated as a rate process in which interparticle bonds are continually broken and reformed as the deformation proceeds. Accordingly, the rate of deformation is governed by the activation energy associated with the rupture of interparticle bonds. Thus, in terms of a rheological model, the fundamental element consists of a spring, representing the recoverable deformation, in series with a rate process dashpot representing the irrecoverable deformation.
Owing to the heterogeneous nature of the fabric of clay soils, i.e. varying particle size, shape, orientation, surface characteristics, etc., a wide range of activation energies, elastic stiffness, and other material properties is anticipated. This is accounted for by assuming a Gaussian distribution for the model properties. Thus, the complete rheological model postulated in this study consists of a combination of spring and dashpot elements covering the complete spectrum of model properties.
The response of the rheological model is analyzed for creep and constant strain-rate loading. The analysis is accomplished numerically using a digital computer since no closed form solution exists for the non-linear systems of equations that result from this model. Experimental data for a number of triaxial tests on clays under various conditions of loading are presented for comparison with the model behavior.
Background: Sex is associated with differences in early outcomes with preterm males at greater risk for mortality and morbidity. The objective of this study was to examine preterm sex differences in neurodevelopmental outcomes and brain development from early-life to 8-years. Methods: A prospective cohort of preterm infants born 24-32 weeks gestation were followed to 8-years with standardized measures. MRI scans were performed after birth, term-equivalent age and 8-years. Associations between sex, risk factors, brain volumes, white matter fractional anisotropy (FA) and outcomes were assessed using generalized estimating equations. Results: Preterm males (N=83) and females (N=72) had similar risk factors, brain injury and pain exposure. Sex was a predictor of cognitive scores (P=0.02) and motor impairment (P=0.03), with males having lower cognitive scores and higher motor impairment over time. There was a sex effect for FA (P=0.04), with males having lower FA over time. There were significant sex-brain injury and sex-pain interactions for cognitive and motor outcomes. Conclusions: In this longitudinal study, preterm males had lower cognitive scores and greater motor impairment, which may relate to differences in white matter maturation. Effects of brain injury and pain on outcomes is moderated by sex, indicating a differential response to early-life adversity in preterm males and females.
Both impulsivity and compulsivity have been identified as risk factors for problematic use of the internet (PUI). Yet little is known about the relationship between impulsivity, compulsivity and individual PUI symptoms, limiting a more precise understanding of mechanisms underlying PUI.
Aims
The current study is the first to use network analysis to (a) examine the unique association among impulsivity, compulsivity and PUI symptoms, and (b) identify the most influential drivers in relation to the PUI symptom community.
Method
We estimated a Gaussian graphical model consisting of five facets of impulsivity, compulsivity and individual PUI symptoms among 370 Australian adults (51.1% female, mean age = 29.8, s.d. = 11.1). Network structure and bridge expected influence were examined to elucidate differential associations among impulsivity, compulsivity and PUI symptoms, as well as identify influential nodes bridging impulsivity, compulsivity and PUI symptoms.
Results
Results revealed that four facets of impulsivity (i.e. negative urgency, positive urgency, lack of premeditation and lack of perseverance) and compulsivity were related to different PUI symptoms. Further, compulsivity and negative urgency were the most influential nodes in relation to the PUI symptom community due to their highest bridge expected influence.
Conclusions
The current findings delineate distinct relationships across impulsivity, compulsivity and PUI, which offer insights into potential mechanistic pathways and targets for future interventions in this space. To realise this potential, future studies are needed to replicate the identified network structure in different populations and determine the directionality of the relationships among impulsivity, compulsivity and PUI symptoms.
Surveillance of non–ventilator-associated hospital-acquired pneumonia (NV-HAP) is complicated by subjectivity and variability in diagnosing pneumonia. We compared a fully automatable surveillance definition using routine electronic health record data to manual determinations of NV-HAP according to surveillance criteria and clinical diagnoses.
Methods:
We retrospectively applied an electronic surveillance definition for NV-HAP to all adults admitted to Veterans’ Affairs (VA) hospitals from January 1, 2015, to November 30, 2020. We randomly selected 250 hospitalizations meeting NV-HAP surveillance criteria for independent review by 2 clinicians and calculated the percent of hospitalizations with (1) clinical deterioration, (2) CDC National Healthcare Safety Network (CDC-NHSN) criteria, (3) NV-HAP according to a reviewer, (4) NV-HAP according to a treating clinician, (5) pneumonia diagnosis in discharge summary; and (6) discharge diagnosis codes for HAP. We assessed interrater reliability by calculating simple agreement and the Cohen κ (kappa).
Results:
Among 3.1 million hospitalizations, 14,023 met NV-HAP electronic surveillance criteria. Among reviewed cases, 98% had a confirmed clinical deterioration; 67% met CDC-NHSN criteria; 71% had NV-HAP according to a reviewer; 60% had NV-HAP according to a treating clinician; 49% had a discharge summary diagnosis of pneumonia; and 82% had NV-HAP according to any definition according to at least 1 reviewer. Only 8% had diagnosis codes for HAP. Interrater agreement was 75% (κ = 0.50) for CDC-NHSN criteria and 78% (κ = 0.55) for reviewer diagnosis of NV-HAP.
Conclusions:
Electronic NV-HAP surveillance criteria correlated moderately with existing manual surveillance criteria. Reviewer variability for all manual assessments was high. Electronic surveillance using clinical data may therefore allow for more consistent and efficient surveillance with similar accuracy compared to manual assessments or diagnosis codes.
The European Food Safety Authority has suggested that EU countries implement the 2 × 24 h diet recall (2 × 24 h DR) method and physical activity (PA) measurements for national dietary surveys. Since 2000, Denmark has used 7 d food diaries (7 d FD) with PA questionnaires and measurements. The accuracy of the reported energy intakes (EI) from the two diet methods, pedometer-determined step counts and self-reported time spent in moderate-to-vigorous PA (MVPA) were compared with total energy expenditure measured by the doubly labelled water (TEEDLW) technique and with PA energy expenditure (PAEE), respectively. The study involved fifty-two male and sixty-eight female volunteers aged 18–60 years who were randomly assigned to start with either the 24 h DR or the web-based 7 d FD, and wore a pedometer for the first 7 d and filled in a step diary. The mean TEEDLW (11·5 MJ/d) was greater than the mean reported EI for the 7 d FD (9·5 MJ/d (P < 0·01)) but the same as the 2 × 24 h DR (11·5 MJ/d). The proportion of under-reporters was 34 % (7 d FD) and 4 % (2 × 24 h DR). Most participants preferred the 7 d DR as it was more flexible, despite altering their eating habits. Pearson’s correlation between steps corrected for cycling and PAEE was r = 0·44, P < 0·01. Spearman’s correlation for self-reported hours spent in MVPA and PAEE was r = 0·58, P < 0·01. The 2 × 24 h DR performs better than the existing 7 d FD method. Pedometer-determined steps and self-reported MVPA are good predictors of PAEE in adult Danes.
Metabolic dysfunction and excess accumulation of adipose tissue are detrimental side effects from breast cancer treatment. Diet and physical activity are important treatments for metabolic abnormalities, yet patient compliance can be challenging during chemotherapy treatment. Time-restricted eating (TRE) is a feasible dietary pattern where eating is restricted to 8 h/d with water-only fasting for the remaining 16 h. The purpose of this study is to evaluate the effect of a multimodal intervention consisting of TRE, healthy eating, and reduced sedentary time during chemotherapy treatment for early-stage (I–III) breast cancer on accumulation of visceral fat (primary outcome), other fat deposition locations, metabolic syndrome and cardiovascular disease risk (secondary outcomes) compared with usual care. The study will be a two-site, two-arm, parallel-group superiority randomised control trial enrolling 130 women scheduled for chemotherapy for early-stage breast cancer. The intervention will be delivered by telephone, including 30–60-minute calls with a registered dietitian who will provide instructions on TRE, education and counselling on healthy eating, and goal setting for reducing sedentary time. The comparison group will receive usual cancer and supportive care including a single group-based nutrition class and healthy eating and physical activity guidelines. MRI, blood draws and assessment of blood pressure will be performed at baseline, after chemotherapy (primary end point), and 2-year follow-up. If our intervention is successful in attenuating the effect of chemotherapy on visceral fat accumulation and cardiometabolic dysfunction, it has the potential to reduce risk of cardiometabolic disease and related mortality among breast cancer survivors.
In 2019 there were 1,760 patients in Denmark’s hospitals who experienced cardiac arrest (IHCA patients = In Hospital Cardiac Arrest patients). Of these patients about 70% survived. There is only limited knowledge about the mental and cognitive state of cardiac arrest survivors. However, it seems, that cardiac arrest survivors, perform mentally and cognitively worse compared to the background population. The mental and cognitive difficulties can lead to reduced quality of life for both those affected and their relatives.
Objectives
Because the above-mentioned area has limited knowledge, further studies are needed to shed more light into the problem.
Methods
To find out if the patients can be included in the study, the patient journals will be studied. After that there will be performed an interview-survey-based study, in which IHCA patients’ possible symptoms of depression, anxiety, PTSD and suicide risk, the patients’ quality of life and any cognitive disorder, shortly after and three months after cardiac arrest, will be examined. The study will also, if possible, focus on the patients’ relatives and on the eventual difficulties they may experience in the aftermath of a relative surviving a cardiac arrest. The above-mentioned will be done using already existing relevant psychiatric and neuropsychological examination tools. In relation to the patients’ relatives, however, a separate survey tool, that has been developed, will be used.
Results
It is an ongoing study. Results are expected in 2023.
Conclusions
In the long run the study hopefully can contribute to establishing relevant help, counseling and rehabilitation for the patients and relatives affected.
Biomarkers in CSF could provide etiological clues and diagnostic tools for psychotic disorders. However, an overview of all CSF findings in individuals with psychotic disorders compared to healthy controls is lacking.
Objectives
To analyse CSF findings from individuals with psychotic disorders compared to healthy controls.
Methods
PubMed, EMBASE, Cochrane Library, Web of Science, ClinicalTrials.gov, and PsycINFO were searched November 3rd, 2021. Case-control studies including patients with non-affective, psychotic disorder compared to healthy controls measuring at least one biomarker in CSF are included. Standardized Mean Differences (SMD) and random-effects analyses were used.
Results
141 studies, covering 192 biomarkers, were included. 161 biomarkers have not previously been included in meta-analyses. Most markers measured showed no significant differences, including the dopamine metabolites HVA and DOPAC. Patients with psychotic disorders showed increased CSF levels of noradrenaline (SMD, 0.53; 95% CI, 0.15-0.90), MHPG (SMD, 0.30; 95% CI, 0.05-0.55), 5-HIAA (SMD, 0.11; 95 % CI, 0.01-0.21), kynurenic acid (SMD, 1.58; 95% CI, 0.26-2.91), kynurenine (SMD, 1.00; 95% CI, 0.58-1.42), IL-6 (SMD, 0.58; 95% CI, 0.39-0.77), IL-8 (SMD, 0.47; 95% CI, 0.18-0.77), anandamide (SMD, 0.78; 95% CI, 0.53-1.02), albumin ratio (SMD, 0.53; 95% CI, 0.10-0.96), total protein (SMD, 0.31; 95% CI, 0.14-0.48), and glucose (SMD, 0.57; 95% CI, 0.08-1.06). Neurotensin (SMD, -0.67; 95% CI, -0.89 to -0.46) and GABA (SMD, -0.29; 95% CI, -0.50 to -0.09) were decreased.
Conclusions
These findings suggest that dysregulation of the immune and adrenergic system and blood-brain barrier dysfunction might play a role in the pathophysiology of psychotic disorders.
The COVID-19 pandemic has affected mental health globally, but the impact on referrals and admissions to mental health services remains understudied.
Objectives
To assess patterns in psychiatric admissions, referrals, and suicidal behavior before and during the COVID-19 pandemic in Denmark.
Methods
Utilizing hospital and Emergency Medical Services (EMS) health records covering 46% of the Danish population, we compared psychiatric in-patients, referrals to mental health services and suicidal behavior in years prior to the COVID-19 pandemic to levels during the first lockdown (March 11 – May 17, 2020), inter-lockdown period (May 18 – December 15, 2020), and second lockdown (December 16, 2020 – February 28, 2021) using negative binomial models.
Results
The rate of psychiatric in-patients declined compared to pre-pandemic levels (RR = 0.95, 95% CI = 0.94 – 0.96, p < 0.01). Referrals were not significantly different (RR = 1.01, 95% CI = 0.92 – 1.10, p = 0.91) during the pandemic; neither was suicidal behavior among hospital contacts (RR = 1.04, 95% CI = 0.94 – 1.14, p = 0.48) nor EMS contacts (RR = 1.08, 95% CI = 1.00 – 1.18, p = 0.06). In the age group <18, an increase in the rate of psychiatric in-patients (RR = 1.11, 95% CI = 1.07 – 1.15, p < 0.01) was observed during the pandemic; however, this did not exceed the pre-pandemic, upwards trend in psychiatric hospitalizations in the age group <18 (p = 0.78).
Conclusions
The pandemic was associated with a decrease in psychiatric hospitalizations. No significant change was observed in referrals and suicidal behavior.
There is emerging evidence of heterogeneity within treatment-resistance schizophrenia (TRS), with some people not responding to antipsychotic treatment from illness onset and a smaller group becoming treatment-resistant after an initial response period. It has been suggested that these groups have different aetiologies. Few studies have investigated socio-demographic and clinical differences between early and late onset of TRS.
Objectives
This study aims to investigate socio-demographic and clinical correlates of late-onset of TRS.
Methods
Using data from the electronic health records of the South London and Maudsley, we identified a cohort of people with TRS. Regression analyses were conducted to identify correlates of the length of treatment to TRS. Analysed predictors include gender, age, ethnicity, positive symptoms severity, problems with activities of daily living, psychiatric comorbidities, involuntary hospitalisation and treatment with long-acting injectable antipsychotics.
Results
We observed a continuum of the length of treatment until TRS presentation. Having severe hallucinations and delusions at treatment start was associated shorter duration of treatment until the presentation of TRS.
Conclusions
Our findings do not support a clear cut categorisation between early and late TRS, based on length of treatment until treatment resistance onset. More severe positive symptoms predict earlier onset of treatment resistance.
Disclosure
DFdF, GKS, EF and IR have received research funding from Janssen and H. Lundbeck A/S. RDH and HS have received research funding from Roche, Pfizer, Janssen and Lundbeck. SES is employed on a grant held by Cardiff University from Takeda Pharmaceutical Comp
Edited by
James Law, University of Newcastle upon Tyne,Sheena Reilly, Griffith University, Queensland,Cristina McKean, University of Newcastle upon Tyne
Language is one of the most remarkable developmental accomplishments of childhood and a tool for life. Over the course of childhood and adolescence, language and literacy develop in dynamic complementarity, shaped by children’s developmental circumstances. Children’s developmental circumstances include characteristics of the child, their parents, family, communities and schools, and the social and cultural contexts in which they grow up. This chapter uses data collected in Growing up in Australia: The Longitudinal Study of Australian Children (LSAC) that was linked to Australia’s National Assessment of Literacy and Numeracy (NAPLAN) to quantify the effects of multiple risk factors on children’s language and literacy development. Latent class analysis and growth curve modelling are used to identify children’s developmental circumstances (i.e. risk profiles) and quantify the effects of different clusters of risk factors on children’s receptive vocabulary growth and reading achievement from age 4 to 15. The developmental circumstances that gave rise to stark inequalities in language and literacy comprise distinct clustering of sociodemographic, cognitive and non-cognitive risk factors. The results point to the need for cross-cutting social, health and education policies and coordinated multi-agency interventions efforts to address social determinants and break the cycle of developmental disadvantage.
Background: Previous studies of neonatal cerebral venous sinus thrombosis (CVST) have focused on term infants, and studies of preterm infants are lacking. In this study, we examined the clinical and radiological features, treatment and outcome of CVST in preterm infants. Methods: This was a retrospective cohort study of preterm infants (gestational age <37 weeks) with radiologically confirmed CVST. All MRI/MRV and CT/CTV scans were re-reviewed. Clinical and radiological data were analysed using descriptive statistics, ANOVA and chi-square tests. Results: A total of 26 preterm infants with CVST were included. Of these, 65% were late preterm, 27% very preterm and 8% extreme preterm. Most (73%) were symptomatic at presentation with seizures or abnormal exam. Transverse (85%) and superior sagittal (42%) sinus were common sites of thrombosis. Parenchymal brain injury was predominantly periventricular (35%) and deep white matter (31%) in location. Intraventricular hemorrhage occurred in 46%. Most infants (69%) were treated with anticoagulation. None of the treated infants had hemorrhagic complications. Outcome at follow-up ranged from no impairment (50%), mild impairment (25%) and severe impairment (25%). Conclusions: Preterm infants with CVST are often symptomatic and have white matter brain lesions. Anticoagulation treatment of preterm CVST appeared to be safe and was not associated with hemorrhagic complications.