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1.
Nat Commun ; 15(1): 4831, 2024 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-38844486

RESUMO

Arrays of Josephson junctions are at the forefront of research on quantum circuitry for quantum computing, simulation, and metrology. They provide a testing bed for exploring a variety of fundamental physical effects where macroscopic phase coherence, nonlinearities, and dissipative mechanisms compete. Here we realize finite-circulation states in an atomtronic Josephson junction necklace, consisting of a tunable array of tunneling links in a ring-shaped superfluid. We study the stability diagram of the atomic flow by tuning both the circulation and the number of junctions. We predict theoretically and demonstrate experimentally that the atomic circuit withstands higher circulations (corresponding to higher critical currents) by increasing the number of Josephson links. The increased stability contrasts with the trend of the superfluid fraction - quantified by Leggett's criterion - which instead decreases with the number of junctions and the corresponding density depletion. Our results demonstrate atomic superfluids in mesoscopic structured ring potentials as excellent candidates for atomtronics applications, with prospects towards the observation of non-trivial macroscopic superpositions of current states.

2.
Clin Psychol Psychother ; 30(6): 1303-1312, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37078825

RESUMO

BACKGROUND: Individuals with borderline personality disorder (BPD) are at a substantial risk of harm to themselves and others, experience high levels of functional impairment and typically are high users of tertiary healthcare to address their mental health concerns. As indicators for BPD typically emerge in adolescence, a day therapy service in Bentley, Western Australia, Touchstone Child and Adolescent Mental Health Service (CAMHS), was developed as an intensive intervention for adolescents with indicators for BPD and its associated symptomology. Touchstone utilizes mentalization-based therapy (MBT) in a therapeutic community setting, where the current study sought to document the anecdotal outcomes using the data provided at Touchstone, to enable a greater understanding of this treatment approach for adolescents with indicators for BPD. METHOD: Forty-six participants attended the Touchstone programme between 2015 and 2020. The programme involved 6 months of MBT (group and individual), occupational therapy, education and creative therapies. Measures of self-injury, mood and emergency department presentations were collected pre- and post-programme. RESULTS: Results indicate that participants show a reduction in non-suicidal acts and thoughts, as well as a reduction in negative moods and feelings from pre-Touchstone to post-Touchstone. There is also a decrease in participant presentation to tertiary emergency departments for mental health concerns. CONCLUSIONS: The current study shows evidence for the efficacy of Touchstone as an MBT therapeutic community intervention to reduce symptoms of emerging BPD and effectively reduce presentations to emergency departments for mental health presentations, alleviating pressure on tertiary hospitals and reducing economic impact of adolescents within this demographic.


Assuntos
Transtorno da Personalidade Borderline , Serviços de Saúde Mental , Humanos , Adolescente , Terapia Baseada em Meditação , Transtorno da Personalidade Borderline/psicologia , Personalidade , Hospitais , Resultado do Tratamento
3.
Personal Ment Health ; 17(4): 300-312, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36960575

RESUMO

This study assessed the effect of a mentalisation-based therapy (MBT) treatment programme on the utilisation of Western Australian public hospitals for mental health presentations over an 18-month period. Hospital data included the number of visits to the emergency department (ED), the number of inpatient admissions to hospital and length of stay of the admissions. Participants included 76 adolescents aged 13-17 years old, who presented with borderline personality disorder (BPD) traits. The Touchstone treatment programme is a time-limited intensive programme that utilises MBT in the context of a therapeutic community. Hospital data for the participants were collected and analysed from three time points; 6 months prior to attending the programme, during the 6-month programme (active treatment) and 6 months after the programme. Results found a statistically significant decrease in hospital utilisation from pre to post programme, with a decline in ED visits, inpatient admissions and admission length of stay. This study presents promising preliminary evidence for the effectiveness of an intensive MBT programme as an intervention for adolescents with BPD features and has significant implications for the public health system in terms of providing effective community-based treatment for this difficult to treat population as well as reducing pressure on tertiary care.


Assuntos
Transtorno da Personalidade Borderline , Comunidade Terapêutica , Humanos , Adolescente , Austrália Ocidental , Transtorno da Personalidade Borderline/terapia , Transtorno da Personalidade Borderline/psicologia , Austrália , Saúde Mental
4.
J Pharm Pract ; 35(5): 800-804, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33757374

RESUMO

OBJECTIVES: Lurasidone is a new second generation (atypical) antipsychotic agent with unique receptor affinity and side-effect profiles, but limited literature is available on its use in adolescent populations. Contrasting with research treatment trials which typically recruit patients by stringent selection criteria, this case series examined the effects and tolerability of using lurasidone in adolescents within real-life clinical settings in treating complex cases who had not responded to other therapy options. METHODS: We conducted a retrospective case-note audit of 6 adolescents aged 14 to 17 years old attending community child and adolescent mental health services (CAMHS) who were prescribed lurasidone. RESULTS: Lurasidone had been prescribed for a range of "hard-to-manage" conditions with complex comorbidities, in adolescents in relation to specific use of lurasidone on the basis of clinical and pharmacological indications after exhausting more conventional treatment options. Case-note review suggested response to lurasidone was clinically positive in 3 cases, equivocal/marginal in 2 cases, and ineffective in 1 case. There were no cases of poor tolerance or adverse effects. Notably, positive responses for depressive and irritable mood symptoms were specifically recorded by prescribing clinicians, indicative of benefits on symptom improvement. No lurasidone attributed weight gain, galactorrhoea, metabolic abnormalities, sexual dysfunction or intolerance were reported. Pro-cognitive effects were not detected; but our findings were constrained by the non-systematic and incomplete information ascertainment, typical in retrospective case-note review. CONCLUSION: This case series provides preliminary data supporting lurasidone's potential use in adolescents of complex clinical needs (but without a clinical diagnosis of bipolar disorder) within real-life clinical settings. Lurasidone appears to show a weight-sparing effect, in addition to improving mood symptoms in some cases. Lurasidone deserves further study for its use in the adolescent population (outside the remit of FDA) given its potential more favorable risk-benefit profile in young people. The favorable tolerability appear to be borne out by the pharmacodynamic predictions in our complex patients who would be excluded in formal clinical trial studies.


Assuntos
Antipsicóticos , Transtorno Bipolar , Transtornos Mentais , Adolescente , Antipsicóticos/efeitos adversos , Transtorno Bipolar/tratamento farmacológico , Humanos , Cloridrato de Lurasidona/uso terapêutico , Transtornos Mentais/tratamento farmacológico , Estudos Retrospectivos
5.
J Child Adolesc Psychopharmacol ; 27(5): 462-465, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27935747

RESUMO

OBJECTIVE: This study was conducted to assess treatment decision-making capacity (TDMC) in a child and adolescent psychiatric sample and to verify possible associations between TDMC, psychiatric symptom severity, and cognitive functioning. METHODS: Twenty-two consecutively recruited patients hospitalized for an acute mental disorder, aged 11-18 years, underwent measurement of TDMC by the MacArthur Competence Assessment Tool for Treatment (MacCAT-T). The MacCAT-T interview focused on patients' current treatment, which comprised second-generation antipsychotics (45.5%), first-generation antipsychotics (13.6%), antiepileptic drugs used as mood stabilizers or lithium carbonate (45.5%), selective serotonin reuptake inhibitors (32%), and benzodiazepines (18%). We moreover measured cognitive functioning (Wechsler Intelligence Scale for Children III) and psychiatric symptom severity (Brief Psychiatric Rating Scale v 4.0). RESULTS: Patients' TDMC varied within the sample, but MacCAT-T scores were good in the sample overall, suggesting that children and adolescents with severe mental disorders could be competent to consent to treatment. The TDMC proved independent of psychiatric diagnosis while being positively associated with cognitive functioning and negatively with excitement. CONCLUSION: The MacCAT-T proved feasible for measuring TDMC in a child and adolescent psychiatric sample. TDMC in minors with severe mental disorders was not necessarily impaired. These results deserve reconsidering the interplay between minors and surrogate decision-makers as concerning treatment decisions.


Assuntos
Tomada de Decisões , Consentimento Livre e Esclarecido/psicologia , Competência Mental/psicologia , Transtornos Mentais/psicologia , Adolescente , Criança , Cognição/fisiologia , Feminino , Hospitalização , Humanos , Entrevistas como Assunto , Masculino , Transtornos Mentais/tratamento farmacológico , Transtornos Mentais/fisiopatologia , Escalas de Graduação Psiquiátrica , Psicotrópicos/uso terapêutico , Índice de Gravidade de Doença
6.
J Prenat Med ; 7(2): 25-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23991276

RESUMO

OBJECTIVE: the objective of our research was to study uterine artery doppler indices and their evolution over time after metroplasty and subsequent pregnancy in patients whose septate uterus was the only explanation for infertility. MATERIALS AND METHODS: a retrospective study. The uterine arteries of 78 patients with septate uteri were evaluated using endovaginal color doppler ultrasound before and after metroplasty. Fifty-one patients became pregnant after metroplasty and were selected as study group, pregnancy occurred within 17 months. By comparing uterine artery doppler indices before and after metroplasty, we observed that the resistive index (RI) and pulsatility index (PI) post surgery were significantly lower compared to premetroplasty levels. RESULTS: all pregnant women in the study group showed uterine resistive indexes within normal ranges, they all underwent scheduled cesarean in-tervention. Gestational evolution was normal in all patients (mean score of Apgar and birth weight); no neonatal complications were observed. CONCLUSION: metroplastic intervention in women with septate uterus as the sole cause of infertility may be a plausible alternative for patients wishing to carry a pregnancy.

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