RESUMO
BACKGROUND: Irritability and anxiety frequently co-occur in pediatric populations. Studies separately looking at the neural correlates of these symptoms have identified engagement of similar neural systems - particularly those implicated in emotional processing. Both irritability and anxiety can be considered negative valence emotional states that might relate to emotion dysregulation. However, previous work has not examined the neural responding during the performance of an emotion regulation task as a function of interaction between irritability and anxiety simultaneously. METHODS: This fMRI study involved 155 participants (90 with significant psychopathologies and 92 male) who performed the Affective Stroop Task, designed to engage emotion regulation as a function of task demands. The Affective Reactivity Index (ARI) was used to index irritability and the Screen for Child Anxiety Related Emotional Disorders (SCARED) was used to index anxiety. RESULTS: Levels of irritability, but not anxiety, was positively correlated with responses to visual images within the right rostro-medial prefrontal cortex and left anterior cingulate cortex during view trials. The second region of ventral anterior cingulate cortex showed a condition-by-emotion-by-ARI score-by-SCARED score interaction. Specifically, anxiety level was significantly correlated with a decreased differential BOLD response to negative relative to neutral view trials but only in the presence of relatively high irritability. CONCLUSIONS: Atypical maintenance of emotional stimuli within the rostro-medial prefrontal cortex may exacerbate the difficulties faced by adolescents with irritability. Moreover, increased anxiety combined with significant irritability may disrupt an automatic emotional conflict-based form of emotion regulation that is particularly associated with the ventral anterior cingulate cortex.
Assuntos
Regulação Emocional , Adolescente , Criança , Masculino , Humanos , Encéfalo/diagnóstico por imagem , Emoções/fisiologia , Imageamento por Ressonância Magnética , Transtornos de Ansiedade , Humor Irritável/fisiologiaRESUMO
Patients frequently visit the emergency department with conditions that place them at risk of worse outcomes when accompanied by coagulopathy. Routine tests of coagulation-prothrombin time, partial thromboplastin time, platelets, and fibrinogen-have shortcomings that limit their use in providing emergency care. One alternative is to investigate coagulation disturbance with viscoelastic monitoring (VEM), a coagulation test that measures the timing and strength of blood clot development in real time. VEM is widely used and studied in cardiac surgery, liver transplant surgery, anesthesia, and trauma. In this article, we review the technique of VEM and the biologic rationale of using it in addition to routine tests of coagulation in emergency clinical situations. Then, we review the evidence (or lack thereof) for using VEM in the diagnosis and treatment of specific conditions. Finally, we describe the limitations of the test and future directions for clinical use and research in emergency medicine.
Assuntos
Transtornos da Coagulação Sanguínea/diagnóstico , Serviço Hospitalar de Emergência , Tromboelastografia/métodos , HumanosRESUMO
Two of the most commonly used substances by adolescents in the United States are cannabis and alcohol. Cannabis use disorder (CUD) and alcohol use disorder (AUD) are associated with impairments in decision-making processes. One mechanism for impaired decision-making in these individuals is thought to be an inability to adequately represent future events during decision-making. In the current study involving 112 adolescents, we used a comparative optimism task to examine the relationship between relative severity of CUD/AUD (as indexed by the CUD/AUD Identification Tests [CUDIT/AUDIT]) and atypical function within neural systems underlying affect-based neural represenation future events. Greater CUDIT scores were negatively related to responses within subgenual anterior and posterior cingulate cortex when processing high-intensity potential future positive and negative events. There was also a particularly marked negative relationship between CUD symptoms and blood oxygen level-dependent (BOLD) responses within visual and premotor cortices to high-intensity, negatively valenced potential future events. However, AUD symptom severity was not associated with dysfunction within these brain regions. These data indicate that relative risk/severity of CUD is associated with reduced responsiveness to future high-intensity events. This may impair decision-making where future significant consequences should guide response choice.
Assuntos
Alcoolismo/fisiopatologia , Encéfalo/fisiopatologia , Abuso de Maconha/fisiopatologia , Adolescente , Emoções , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Estados UnidosRESUMO
OBJECTIVE: In septic patients, multiple retrospective studies show an association between large volumes of fluids administered in the first 24 h and mortality, suggesting a benefit to fluid restrictive strategies. However, these studies do not directly estimate the causal effects of fluid-restrictive strategies, nor do their analyses properly adjust for time-varying confounding by indication. In this study, we used causal inference techniques to estimate mortality outcomes that would result from imposing a range of arbitrary limits ("caps") on fluid volume administration during the first 24 h of intensive care unit (ICU) care. DESIGN: Retrospective cohort study SETTING: ICUs at the Beth Israel Deaconess Medical Center, 2008-2012 PATIENTS: One thousand six hundred thirty-nine septic patients (defined by Sepsis-3 criteria) 18 years and older, admitted to the ICU from the emergency department (ED), who received less than 4 L fluids administered prior to ICU admission MEASUREMENTS AND MAIN RESULTS: Data were obtained from the Medical Information Mart for Intensive Care III (MIMIC-III). We employed a dynamic Marginal Structural Model fit by inverse probability of treatment weighting to obtain confounding adjusted estimates of mortality rates that would have been observed had fluid resuscitation volume caps between 4 L-12 L been imposed on the population. The 30-day mortality in our cohort was 17%. We estimated that caps between 6 and 10 L on 24 h fluid volume would have reduced 30-day mortality by - 0.6 to - 1.0%, with the greatest reduction at 8 L (- 1.0% mortality, 95% CI [- 1.6%, - 0.3%]). CONCLUSIONS: We found that 30-day mortality would have likely decreased relative to observed mortality under current practice if these patients had been subject to "caps" on the total volume of fluid administered between 6 and 10 L, with the greatest reduction in mortality rate at 8 L.
Assuntos
Hidratação , Mortalidade Hospitalar , Sepse , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Serviço Hospitalar de Emergência , Humanos , Unidades de Terapia Intensiva , Tempo de Internação , Pessoa de Meia-Idade , Respiração Artificial , Estudos Retrospectivos , Sepse/mortalidade , Sepse/terapia , Fatores de TempoRESUMO
BACKGROUND: Intravenous fluids, an essential component of sepsis resuscitation, may paradoxically worsen outcomes by exacerbating endothelial injury. Preclinical models suggest that fluid resuscitation degrades the endothelial glycocalyx, a heparan sulfate-enriched structure necessary for vascular homeostasis. We hypothesized that endothelial glycocalyx degradation is associated with the volume of intravenous fluids administered during early sepsis resuscitation. METHODS: We used mass spectrometry to measure plasma heparan sulfate (a highly sensitive and specific index of systemic endothelial glycocalyx degradation) after 6 h of intravenous fluids in 56 septic shock patients, at presentation and after 24 h of intravenous fluids in 100 sepsis patients, and in two groups of non-infected patients. We compared plasma heparan sulfate concentrations between sepsis and non-sepsis patients, as well as between sepsis survivors and sepsis non-survivors. We used multivariable linear regression to model the association between volume of intravenous fluids and changes in plasma heparan sulfate. RESULTS: Consistent with previous studies, median plasma heparan sulfate was elevated in septic shock patients (118 [IQR, 113-341] ng/ml 6 h after presentation) compared to non-infected controls (61 [45-79] ng/ml), as well as in a second cohort of sepsis patients (283 [155-584] ng/ml) at emergency department presentation) compared to controls (177 [144-262] ng/ml). In the larger sepsis cohort, heparan sulfate predicted in-hospital mortality. In both cohorts, multivariable linear regression adjusting for age and severity of illness demonstrated a significant association between volume of intravenous fluids administered during resuscitation and plasma heparan sulfate. In the second cohort, independent of disease severity and age, each 1 l of intravenous fluids administered was associated with a 200 ng/ml increase in circulating heparan sulfate (p = 0.006) at 24 h after enrollment. CONCLUSIONS: Glycocalyx degradation occurs in sepsis and septic shock and is associated with in-hospital mortality. The volume of intravenous fluids administered during sepsis resuscitation is independently associated with the degree of glycocalyx degradation. These findings suggest a potential mechanism by which intravenous fluid resuscitation strategies may induce iatrogenic endothelial injury.
Assuntos
Endotélio/fisiopatologia , Hidratação/efeitos adversos , Glicocálix/efeitos dos fármacos , Sepse/tratamento farmacológico , Administração Intravenosa , Adulto , Idoso , Angiopoietina-2/análise , Angiopoietina-2/sangue , Fator Natriurético Atrial/análise , Fator Natriurético Atrial/sangue , Biomarcadores/análise , Biomarcadores/sangue , Endotélio/efeitos dos fármacos , Endotélio/metabolismo , Feminino , Hidratação/métodos , Hidratação/estatística & dados numéricos , Glicocálix/metabolismo , Heparitina Sulfato/análise , Heparitina Sulfato/sangue , Humanos , Masculino , Espectrometria de Massas/métodos , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/análise , Peptídeo Natriurético Encefálico/sangue , Ressuscitação/efeitos adversos , Ressuscitação/métodos , Ressuscitação/estatística & dados numéricos , Sepse/sangue , Sepse/fisiopatologia , Sindecana-1/análise , Sindecana-1/sangue , Trombomodulina/análise , Trombomodulina/sangue , Ativador de Plasminogênio Tecidual/análise , Ativador de Plasminogênio Tecidual/sangue , Receptor 1 de Fatores de Crescimento do Endotélio Vascular/análise , Receptor 1 de Fatores de Crescimento do Endotélio Vascular/sangueRESUMO
Trauma screening is an important element for providing trauma-informed services to youth in residential care. Unfortunately, lack of time and resources may deter clinicians from conducting trauma screening at intake. This study tested the psychometric properties of the Brief Trauma Symptom Screen for Youth (BTSSY), which could be used during intake into residential care. Participants included 572 youth, ages 10-18 years (M = 14.28 years, SD = 2.31), of whom 58.9% were boys, 78.7% were Caucasian, 51.7% were youth receiving services in residential care, 15.6% were youth with clinical needs, and 32.7% were typically developing youth from the local community. Participants completed the BTSSY; other questionnaires of psychopathology, childhood maltreatment, and symptomology of posttraumatic stress disorder (PTSD); and diagnostic interviews, which were conducted by licensed psychiatrists. The total BTSSY score had a good composite reliability (CR) of .80 and was valid based on a significant positive correlation, r = .64, with the UCLA PTSD-Reaction Index. The BTSSY score was also fair, area under the curve = .75, at detecting a diagnosis of PTSD from a psychiatrist. Significant group differences in the BTSSY scores were found between youth with a diagnosis of PTSD and the other two groups, with moderate-to-large effect sizes, ds = 0.73-1.22. Preliminary results indicated the BTSSY may be a useful screening tool for identifying youth at residential care intake who may need additional assessment for PTSD. Limitations and implications for future research and practice are discussed.
Spanish Abstracts by Asociación Chilena de Estrés Traumático (ACET) Psicometría de la escala breve de síntomas de trauma para jóvenes en atención residencial TAMIZAJE BREVE DE SÍNTOMAS DE TRAUMA PARA JOVENES La detección de los traumas es un elemento importante para proporcionar servicios informados en el trauma a los jóvenes en atención residencial. Desafortunadamente, la falta de tiempo y recursos puede impedir a los médicos realizar detección de traumas en el ingreso. Este estudio probó las propiedades psicométricas de la Escala Breve de Síntomas de Trauma para Jóvenes (BTSSY en su sigla en inglés), que podría usarse durante el ingreso a la atención residencial. Los participantes incluyeron 572 jóvenes, de 10 a 18 años (M = 14.28 años, DE = 2.31), de los cuales 58.9% eran niños, 78.7% eran caucásicos, 51.7% eran jóvenes que recibían servicios de atención residencial, 15.6% eran jóvenes con necesidades clínicas, y 32.7% eran jóvenes con desarrollo normativo de la comunidad local. Los participantes completaron el BTSSY; otros cuestionarios de psicopatología, maltrato infantil, y sintomatología del trastorno de estrés postraumático (TEPT); y entrevistas de diagnóstico, realizadas por psiquiatras calificados. El puntaje BTSSY total tuvo una buena confiabilidad compuesta (CR en su sigla en inglés) de .80 y fue válido en base a una correlación positiva significativa, r = .64, con el Índice de Reacción del TEPT de UCLA. El puntaje BTSSY también fue favorable, área bajo la curva = .75, al detectar un diagnóstico del TEPT de un psiquiatra. Se encontraron diferencias significativas entre los grupos en los puntajes BTSSY entre los jóvenes con diagnóstico del TEPT y los otros dos grupos, con tamaños del efecto moderados a grandes, ds = 0.73-1.22. Los resultados preliminares indicaron que el BTSSY puede ser una herramienta útil de detección para identificar a los jóvenes que reciben atención residencial y que pueden necesitar una evaluación adicional para el TEPT. Se discuten las limitaciones e implicaciones para futuras investigaciones y la práctica.
Assuntos
Transtornos de Estresse Pós-Traumáticos/diagnóstico , Inquéritos e Questionários , Avaliação de Sintomas/métodos , Adolescente , Criança , Feminino , Humanos , Masculino , Programas de Rastreamento/métodos , Psicometria , Reprodutibilidade dos Testes , Instituições Residenciais , Fatores SexuaisRESUMO
BACKGROUND: Acute appendicitis is common in the adult emergency department (ED). Computed tomography (CT) scan is frequently used to diagnose this condition, but ultrasound (US)-commonly used in pediatric diagnosis-may also have a role. OBJECTIVES: Review the clinical utility and define the frequency and diagnostic accuracy of US to diagnose appendicitis in an adult population in the ED setting. METHODS: Retrospective cohort study of patients who underwent appendiceal US in an academic, tertiary ED from July 2013-October 2015. RESULTS: There were 174 patients included, of which 39 (22%) had pathology-confirmed appendicitis. There were 25 patients who had an US scan that was positive for appendicitis, 146 (84%) were indeterminate, and 3 (1.7%) were negative. Among patients with a positive US, 25/25 (100%, 95% confidence interval [CI] 84-100%) had appendicitis, 32/146 (22%, 95% CI 16-29%) with an indeterminate US had appendicitis, and 0/3 (0%, 95% CI 0-6.2%) with a negative US had appendicitis. In the 28 definitive cases, US had a sensitivity of 64%, specificity of 2%, positive predictive value of 100%, and negative predictive value of 100%. The likelihood ratio positive and negative were 173 and 0, respectively. CONCLUSION: Our initial data suggest that an US that shows appendicitis seems to be reliable; however, a high prevalence of indeterminate studies limits the diagnostic utility as a universal approach in adult patients in the ED setting. Larger studies are needed to identify which patient populations would benefit from US as the initial imaging modality, what factors contribute to the large numbers of indeterminate results, and if any interventions may reduce the number of indeterminate results.
Assuntos
Apendicite/diagnóstico , Ultrassonografia/métodos , Ultrassonografia/normas , Adolescente , Adulto , Estudos de Coortes , Serviço Hospitalar de Emergência/organização & administração , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos , Ultrassonografia/tendências , Estados UnidosRESUMO
Trauma-informed care is recommended to improve the quality of group home services for youth. Youth exposure to trauma and associated symptoms are important factors involved in making the clinical impression that determines treatment services. This study considered three dimensions of trauma (exposure, symptoms, and clinical impression) to determine associations with behavioral incidents of youth in trauma-informed group homes and how trauma was related to changes in psychopathology from intake to discharge. Archival records of youth (N = 1,096), age 9-18 (M = 15.7 years) who received services from January 2013 to December 2017, and departed the program were used. Statistical procedures included hierarchical linear modeling and analysis of covariance. Results indicated trauma symptoms predicted emotional problems and self-injurious behavior. Youth in high- and low-trauma groups both showed decreases in behavioral incidents and psychopathology, but clinical impression of trauma moderated the change in emotional problems from intake to discharge. Youth deemed by clinicians to have lower trauma (based on history of maltreatment and expression of trauma symptoms) had greater decrease in emotional problems from admission to discharge. Limitations and implications for further research on implementation and effectiveness of trauma-informed models are discussed.
Assuntos
Lares para Grupos , Avaliação das Necessidades , Transtornos de Estresse Pós-Traumáticos/fisiopatologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Adolescente , Criança , Feminino , Cuidados no Lar de Adoção , Humanos , Masculino , Meio-Oeste dos Estados Unidos , Estresse Psicológico , Inquéritos e QuestionáriosRESUMO
OBJECTIVES: The outcomes of critically ill patients who undergo interhospital transfer are not well understood. Physicians assume that patients who undergo interhospital transfer will receive more advanced care that may translate into decreased morbidity or mortality relative to a similar patient who is not transferred. However, there is little empirical evidence to support this assumption. We examined country-level U.S. data from the Nationwide Readmissions Database to examine whether, in mechanically ventilated patients with sepsis, interhospital transfer is associated with a mortality benefit. DESIGN: Retrospective data analysis using complex survey design regression methods with propensity score matching. SETTING: The Nationwide Readmissions Database contains information about hospital admissions from 22 States, accounting for roughly half of U.S. hospitalizations; the database contains linkage numbers so that admissions and transfers for the same patient can be linked across 1 year of follow-up. PATIENTS: From the 2013 Nationwide Readmission Database Sample, 14,325,172 hospital admissions were analyzed. There were 61,493 patients with sepsis and on mechanical ventilation. Of these, 1,630 patients (2.7%) were transferred during their hospitalization. A propensity-matched cohort of 1,630 patients who did not undergo interhospital transfer was identified. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The exposure of interest was interhospital transfer to an acute care facility. The primary outcome was hospital mortality; the secondary outcome was hospital length of stay. The propensity score included age, gender, insurance coverage, do not resuscitate status, use of renal replacement therapy, presence of shock, and Elixhauser comorbidities index. After propensity matching, interhospital transfer was not associated with a difference in in-hospital mortality (12.3% interhospital transfer vs 12.7% non-interhospital transfer; p = 0.74). However, interhospital transfer was associated with a longer total hospital length of stay (12.8 d interquartile range, 7.7-21.6 for interhospital transfer vs 9.1 d interquartile range, 5.1-17.0 for non-interhospital transfer; p < 0.01). CONCLUSIONS: Patients with sepsis requiring mechanical ventilation who underwent interhospital transfer did not have improved outcomes compared with a cohort with matched characteristics who were not transferred. The study raises questions about the risk-benefit profile of interhospital transfer as an intervention.
Assuntos
Avaliação de Resultados em Cuidados de Saúde/estatística & dados numéricos , Transferência de Pacientes/estatística & dados numéricos , Respiração Artificial/mortalidade , Sepse/mortalidade , Sepse/terapia , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Escala de Gravidade do Ferimento , Masculino , Pessoa de Meia-Idade , Pontuação de Propensão , Análise de Regressão , Estudos Retrospectivos , Web Semântica , Estados UnidosRESUMO
OBJECTIVES: Interhospital transfer, a common intervention, may be subject to healthcare disparities. In mechanically ventilated patients with sepsis, we hypothesize that disparities not disease related would be found between patients who were and were not transferred. DESIGN: Retrospective cohort study. SETTING: Nationwide Inpatient Sample, 2006-2012. PATIENTS: Patients over 18 years old with a primary diagnosis of sepsis who underwent mechanical ventilation. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: We obtained age, gender, length of stay, race, insurance coverage, do not resuscitate status, and Elixhauser comorbidities. The outcome used was interhospital transfer from a small- or medium-sized hospital to a larger acute care hospital. Of 55,208,382 hospitalizations, 46,406 patients met inclusion criteria. In the multivariate model, patients were less likely to be transferred if the following were present: older age (odds ratio, 0.98; 95% CI, 0.978-0.982), black race (odds ratio, 0.79; 95% CI, 0.70-0.89), Hispanic race (odds ratio, 0.79; 95% CI, 0.69-0.90), South region hospital (odds ratio, 0.79; 95% CI, 0.72-0.88), teaching hospital (odds ratio, 0.31; 95% CI, 0.28-0.33), and do not resuscitate status (odds ratio, 0.19; 95% CI, 0.15-0.25). CONCLUSIONS: In mechanically ventilated patients with sepsis, we found significant disparities in race and geographic location not explained by medical diagnoses or illness severity.
Assuntos
Disparidades em Assistência à Saúde/etnologia , Unidades de Terapia Intensiva/ética , Transferência de Pacientes/ética , Racismo , Respiração Artificial/ética , Sepse/etnologia , Sepse/terapia , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , População Negra , Estudos de Coortes , Ética Médica , Feminino , Hispânico ou Latino , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Ordens quanto à Conduta (Ética Médica) , Estudos Retrospectivos , Estados UnidosRESUMO
One challenge of contemporary medical education is that shorter lengths of stay and time-limited clerkships often interrupt a student's relationship with a patient before a diagnosis is made or treatment is completed, limiting the learning experience. Medical students sometimes use electronic health records (EHRs) to overcome these limitations. EHRs provide access to patients' future medical records, enabling students to track former patients across care venues to audit their diagnostic impressions and observe outcomes. While this activity has potential to improve clinical training, there is a risk of unintended harm to patients through loss of privacy. Students need guidance on how to perform this activity appropriately. This article describes an ethical framework for tracking using an "educational registry," a list of former patients housed within the EHR that one follows longitudinally for educational purposes. Guiding principles include obtaining permission from patients, having legitimate educational intent, and restricting review of records to those essential for training. This framework could serve as a foundation for institutions seeking to develop a policy on tracking former patients, and may facilitate research on the use of EHRs to improve medical education, such as reducing diagnostic error and promoting self-directed learning.
Assuntos
Confidencialidade , Educação Médica/normas , Registros Eletrônicos de Saúde/normas , Sistema de Registros , Registros Eletrônicos de Saúde/ética , Humanos , Estudantes de MedicinaRESUMO
BACKGROUND: Previous work has shown that amygdala responsiveness to fearful expressions is inversely related to level of callous-unemotional (CU) traits (i.e. reduced guilt and empathy) in youth with conduct problems. However, some research has suggested that the relationship between pathophysiology and CU traits may be different in those youth with significant prior trauma exposure. METHODS: In experiment 1, 72 youth with varying levels of disruptive behavior and trauma exposure performed a gender discrimination task while viewing morphed fear expressions (0, 50, 100, 150 fear) and Blood Oxygenation Level Dependent responses were recorded. In experiment 2, 66 of these youth performed the Social Goals Task, which measures self-reports of the importance of specific social goals to the participant in provoking social situations. RESULTS: In experiment 1, a significant CU traits-by-trauma exposure interaction was observed within right amygdala; fear intensity-modulated amygdala responses negatively predicted CU traits for those youth with low levels of trauma but positively predicted CU traits for those with high levels of trauma. In experiment 2, a bootstrapped model revealed that the indirect effect of fear intensity amygdala response on social goal importance through CU traits is moderated by prior trauma exposure. CONCLUSIONS: This study, while exploratory, indicates that the pathophysiology associated with CU traits differs in youth as a function of prior trauma exposure. These data suggest that prior trauma exposure should be considered when evaluating potential interventions for youth with high CU traits.
Assuntos
Sintomas Afetivos/fisiopatologia , Tonsila do Cerebelo/fisiopatologia , Transtorno da Conduta/fisiopatologia , Empatia/fisiologia , Medo/fisiologia , Neuroimagem Funcional/métodos , Relações Interpessoais , Trauma Psicológico/fisiopatologia , Comportamento Social , Percepção Social , Adolescente , Sintomas Afetivos/diagnóstico por imagem , Tonsila do Cerebelo/diagnóstico por imagem , Criança , Transtorno da Conduta/diagnóstico por imagem , Expressão Facial , Reconhecimento Facial/fisiologia , Feminino , Objetivos , Humanos , Imageamento por Ressonância Magnética , Masculino , Trauma Psicológico/diagnóstico por imagemRESUMO
BACKGROUND: Previous work has shown that patients with conduct problems (CP) show impairments in reinforcement-based decision-making. However, studies with patients have not previously demonstrated any relationships between impairment in any of the neurocomputations underpinning reinforcement-based decision-making and specific symptom sets [e.g. level of CP and/or callous-unemotional (CU) traits]. METHODS: Seventy-two youths [20 female, mean age = 13.81 (SD = 2.14), mean IQ = 102.34 (SD = 10.99)] from a residential treatment program and the community completed a passive avoidance task while undergoing functional MRI. RESULTS: Greater levels of CP were associated with poorer task performance. Reduced representation of expected values (EV) when making avoidance responses within bilateral anterior insula cortex/inferior frontal gyrus (AIC/iFG) and striatum was associated with greater levels of CP but not CU traits. CONCLUSIONS: The current data indicate that difficulties in the use of value information to motivate decisions to avoid suboptimal choices are associated with increased levels of CP (though not severity of CU traits). Moreover, they account for the behavioral deficits observed during reinforcement-based decision-making in youth with CP. In short, an individual's relative failure to utilize value information within AIC/iFG to avoid bad choices is associated with elevated levels of CP.
Assuntos
Córtex Cerebral/fisiopatologia , Transtorno da Conduta/fisiopatologia , Tomada de Decisões/fisiologia , Neostriado/fisiopatologia , Desempenho Psicomotor/fisiologia , Reforço Psicológico , Adolescente , Criança , Feminino , Humanos , Imageamento por Ressonância Magnética , MasculinoRESUMO
PURPOSE: To test the hypothesis that magnetic resonance (MR) imaging can quantify intratumoral superparamagnetic iron oxide (SPIO) nanoparticle uptake after nanoablation. MATERIALS AND METHODS: SPIO nanoparticles functionalized with doxorubicin were synthesized. N1-S1 hepatomas were successfully induced in 17 Sprague-Dawley rats distributed into three dosage groups. Baseline tumor R2* values (the reciprocal of T2*) were determined using 7-tesla (T) MR imaging. After intravenous injection of SPIO nanoparticles, reversible electroporation (1,300 V/cm, 8 pulses, 100-µs pulse duration) was applied. Imaging of rats was performed to determine tumor R2* values after the procedure, and change in R2* (ΔR2*) was calculated. Inductively coupled plasma mass spectrometry was used to determine intratumoral iron (Fe) concentration after the procedure, which served as a proxy for SPIO nanoparticle uptake. Mean tumor Fe concentration [Fe] and ΔR2* for each subject were assessed for correlation with linear regression, and mean [Fe] for each dosage group was compared with analysis of variance. RESULTS: ΔR2* significantly correlated with tumor SPIO nanoparticle uptake after nanoablation (r = 0.50, P = .039). On average, each 0.1-ms(-1) increase in R2* corresponded to a 0.1394-mM increase in [Fe]. There was no significant difference in mean SPIO nanoparticle uptake among dosage groups (P = .57). CONCLUSIONS: Intratumoral SPIO nanoparticle uptake after nanoablation can be successfully quantified noninvasively with 7-T MR imaging. Imaging can be used as a method to estimate localized drug delivery after nanoablation.
Assuntos
Técnicas de Ablação , Antibióticos Antineoplásicos/administração & dosagem , Carcinoma Hepatocelular/tratamento farmacológico , Doxorrubicina/administração & dosagem , Portadores de Fármacos , Óxido Ferroso-Férrico/metabolismo , Neoplasias Hepáticas Experimentais/tratamento farmacológico , Imageamento por Ressonância Magnética , Nanopartículas de Magnetita , Nanomedicina/métodos , Animais , Antibióticos Antineoplásicos/química , Antibióticos Antineoplásicos/metabolismo , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patologia , Química Farmacêutica , Doxorrubicina/química , Doxorrubicina/metabolismo , Eletroquimioterapia , Óxido Ferroso-Férrico/química , Injeções Intravenosas , Modelos Lineares , Neoplasias Hepáticas Experimentais/metabolismo , Neoplasias Hepáticas Experimentais/patologia , Masculino , Espectrometria de Massas , Ratos Sprague-Dawley , Fatores de TempoRESUMO
BACKGROUND: Suicide is the second leading cause of death for adolescents in the United States. However, relatively little is known about the forms of atypical neuro-cognitive function that are correlates of suicidal ideation (SI). One form of cognitive/affective function that, when dysfunctional, is associated with SI is emotion regulation. However, very little work has investigated the neural correlates of emotion dysregulation in adolescents with SI. METHODS: Participants (N = 111 aged 12-18, 32 females, 31 [27.9%] reporting SI) were recruited shortly after their arrival at a residential care facility where they had been referred for behavioral and mental health problems. Daily reports of SI were collected during the participants' first 90-days in residential care. Participants were presented with a task-fMRI measure of emotion regulation - the Affective Number Stroop task shortly after recruitment. Participants were divided into two groups matched for age, sex and IQ based on whether they demonstrated SI. RESULTS: Participants who demonstrated SI showed increased recruitment of regions including dorsomedial prefrontal cortex/supplemental motor area and parietal cortex during task (congruent and incongruent) relative to view trials in the context of emotional relative to neutral distracters. CONCLUSIONS: Participants with SI showed increased recruitment of regions implicated in executive control during the performance of a task indexing automatic emotion regulation. Such data might suggest a relative inefficiency in the recruitment of these regions in individuals with SI.
Assuntos
Regulação Emocional , Suicídio , Feminino , Humanos , Adolescente , Ideação Suicida , Emoções , Função ExecutivaRESUMO
This study compares the On the Way Home (OTWH) aftercare program to traditional aftercare supports on placement and school stability for 82 youth (43 treatment, 39 control) with disabilities discharging from residential care. One-year-post-discharge results revealed that negative event occurrence (i.e., returning to care or discontinuing enrollment in the community school) was three to over five times less likely for OTWH youth compared to youth in the control condition.
Assuntos
Assistência ao Convalescente , Instituições Residenciais , Adolescente , Assistência ao Convalescente/métodos , Assistência ao Convalescente/organização & administração , Assistência ao Convalescente/estatística & dados numéricos , Feminino , Humanos , Masculino , Nebraska , Alta do Paciente , Projetos Piloto , Instituições Residenciais/métodos , Instituições Residenciais/organização & administração , Instituições Residenciais/estatística & dados numéricos , Seguridade Social , EstudantesRESUMO
OBJECTIVE: We explore patterns of childhood adversity (CA) in youth entering residential care. We also examine possible sex differences as well as the association between these patterns and key indicators of clinical functioning, including emotional problems, conduct problems, hyperactivity/inattention, prosocial behavior, peer problems, and trauma symptoms. METHOD: Data were obtained from archival records of 2,066 youth (Mage = 15.57, SD = 1.57) entering a family style residential program for the first time. The sample composition was: 65% boys, 45.8% White, 26.0% Black or African American, 12.5% Hispanic or Latino, 10.5% Multiracial, and 5.1% Other race. Inclusive latent class analysis was used to identify profiles of CA. Profile membership was used to examine sex differences and predict clinical functioning. RESULTS: Five CA profiles were found: (1) Low Exposure, (2) Familial Dysfunction, (3) Neglect/Emotional Abuse, (4) High Exposure without Sexual Abuse, and (5) High Exposure with Sexual Abuse. Girls were more likely than boys to be in Neglect/Emotional Abuse and High Exposure with Sexual Abuse profiles. Each CA profile was associated with distinct clinical outcomes. CONCLUSIONS: This study highlights the importance of considering CA patterns when working with youth entering residential care. CA screening and classification during residential care admissions could better inform interventions for youth and their families and potentially improve the effectiveness of mental health services received. Future research should continue to study the connections between CA profiles and clinical outcomes. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Assuntos
Experiências Adversas da Infância , Maus-Tratos Infantis , Transtornos Mentais , Tratamento Domiciliar , Adolescente , Criança , Feminino , Humanos , Masculino , Maus-Tratos Infantis/psicologia , Transtornos Mentais/diagnóstico , Psicopatologia , Grupos Raciais , Fatores SexuaisRESUMO
OBJECTIVE: The goal of the current study was to determine the extent to which atypical neural responsiveness during retaliation is associated with observed aggression in youth in residential care. METHOD: This functional magnetic resonance imaging study involved 83 adolescents (56 male and 27 female; mean age, 16.18 years) in residential care performing a retaliation task. Of the 83 adolescents, 42 displayed aggressive behavior within the first 3 months of residential care, whereas 41 did not. During the retaliation task, participants were offered either fair or unfair divisions of $20 pots (allocation phase) and could either accept the offer or reject it, and, by spending $1, $2, or $3, punish the partner (retaliation phase). RESULTS: The study's main findings were that aggressive adolescent showed the following: reduced down-regulation of activity within regions involved in representing the expected value of choice options (left ventromedial prefrontal cortex and left posterior cingulate cortex) as a function of offer unfairness and retaliation level; and reduced recruitment of regions implicated in response control (right inferior frontal gyrus and bilateral anterior insular cortex) and associated fronto-parietal regions as a function of retaliation level. The aggressive adolescents were also significantly more likely to have been aggressive prior to residential care and showed a strong trend for increased retaliation on the task. CONCLUSION: We suggest that individuals with a greater propensity for aggression show reduced representation of the negative consequences of retaliation and associated reduced recruitment of regions potentially involved in over-ruling these negative consequences to engage in retaliation. DIVERSITY & INCLUSION STATEMENT: We worked to ensure sex and gender balance in the recruitment of human participants. We worked to ensure that the study questionnaires were prepared in an inclusive way. We worked to ensure race, ethnic, and/or other types of diversity in the recruitment of human participants. We worked to ensure sex balance in the selection of non-human subjects. We actively worked to promote sex and gender balance in our author group. The author list of this paper includes contributors from the location and/or community where the research was conducted who participated in the data collection, design, analysis, and/or interpretation of the work. While citing references scientifically relevant for this work, we also actively worked to promote inclusion of historically underrepresented racial and/or ethnic groups in science in our reference list. While citing references scientifically relevant for this work, we also actively worked to promote sex and gender balance in our reference list. We actively worked to promote inclusion of historically underrepresented racial and/or ethnic groups in science in our author group.