Working memory and left medial temporal cortical thickness.

OBJECTIVE: To perform a pilot study to investigate the association between working memory and cortical thickness in a sample of attention deficit/hyperactivity disorder (ADHD) children. METHODS: Seventeen children aged 7-10 years diagnosed with ADHD and 16 healthy children underwent a magnetic resonance scan for cortical thickness measurements. Data was correlated with working memory performance using the Backwards Digit Span subtest of the Wechsler Intelligence Scale for Children. RESULTS: Working memory impairment, evidenced by lower scores on the Backwards Digit Span, was observed in patients with ADHD compared to healthy controls. There was a direct correlation between working memory and cortical thickness of the left medial temporal lobe (Spearman's correlation coefficient: 0.499; p < 0.005). CONCLUSIONS: Our data suggests, for the first time, a correlation between working memory, evaluated by the Backwards Digit Span, and left medial temporal cortical thickness.

Working memory and left medial temporal cortical thickness / Memória de trabalho e espessura cortical temporal medial esquerda

ABSTRACT Objective To perform a pilot study to investigate the association between working memory and cortical thickness in a sample of attention deficit/hyperactivity disorder (ADHD) children. Methods Seventeen children aged 7-10 years diagnosed with ADHD and 16 healthy children underwent a magnetic resonance scan for cortical thickness measurements. Data was correlated with working memory performance using the Backwards Digit Span subtest of the Wechsler Intelligence Scale for Children. Results Working memory impairment, evidenced by lower scores on the Backwards Digit Span, was observed in patients with ADHD compared to healthy controls. There was a direct correlation between working memory and cortical thickness of the left medial temporal lobe (Spearman’s correlation coefficient: 0.499; p < 0.005). Conclusions Our data suggests, for the first time, a correlation between working memory, evaluated by the Backwards Digit Span, and left medial temporal cortical thickness.

RESUMO Objetivo Realizar estudo piloto para investigar a associação entre memória de trabalho e espessura cortical em crianças com transtorno de défict de atenção e hiperatividade (TDAH). Métodos Dezessete crianças com TDAH, entre 7 e 10 anos, e dezesseis crianças saudáveis foram submetidas a ressonância magnética para aferição de espessura cortical. Os dados foram correlacionados com desempenho da memória de trabalho usando a ordem inversa do subteste Dígitos da Escala de Inteligência Wechsler para Crianças. Resultados Prejuízos na memória de trabalho, evidenciado pela menor pontuação na ordem inversa do subteste Dígitos, foram observados em pacientes com TDAH, em comparação com crianças saudáveis. Observou-se correlação direta entre memória de trabalho e espessura do lobo temporal médio à esquerda (coeficiente de correlação de Spearman: 0,499; p < 0,005). Conclusões Nossos dados sugerem, pela primeira vez, uma correlação entre memória de trabalho, avaliada através da pontuação na ordem inversa do subteste Dígitos, e espessura do córtex temporal medial à esquerda.

How can Continuous Performance Test help to assess inattention when mood and ADHD symptoms coexist?

Depression and attention-deficit/hyperactivity disorder (ADHD) are prevalent, and often comorbid, disorders, with varying severity levels among patients. Inattention is a symptom present in both disorders, which often makes their differential diagnosis difficult in clinical practice (depression only versus comorbidity). This study aimed to investigate the influence of depressive symptoms on attention performance using one of the most common tasks in clinical practice, the continuous performance test (CPT). Ninety-three college students (60 men, 33 women) with a mean age of 24 years old were investigated with self-reports and semi-structured interviews for ADHD; the Beck Depression Inventory (BDI) was used for depression ratings. Attention measures were derived from the CPT. There was no correlation between depression and ADHD symptoms; in addition, depression was not correlated with any of the CPT scores; ADHD symptomatology was the only predictor of changes in those CPT variables (commission and omission errors and d prime). ADHD-associated impairment on the CPT was not augmented by the presence of depressive symptoms, making neuropsychological results on this test helpful for the differential diagnosis. When attention deficits are observed in individuals with mild or moderate depression, they are most likely not attributed to depression.

Neuropsychological assessment before and after radiotherapy in a child with an intracranial tumor: case report / Avaliação neuropsicológica antes e após radioterapia em uma criança com tumor intracraniano: relato de caso

INTRODUCTION: Brain tumors are the most common solid tumors and the second largest group of neoplasms diagnosed in childhood. Treatment includes surgery, radiotherapy, and chemotherapy. However, radiotherapy can cause complications, e.g., cognitive deficits. CASE DESCRIPTION: We describe the case of a child diagnosed with a brain tumor evaluated before and after radiotherapy to investigate cognitive decline after treatment. The results showed a decline in Intelligence Quotient (IQ) scores and reversal of the predominance of verbal and nonverbal skills. After radiotherapy, the subject showed slowness, academic deficits, and difficulties learning new information. COMMENTS: Even though the post-treatment evaluation showed scores compatible with the average, comparison between pre- and post-treatment evaluations demonstrated the impact of radiotherapy on the subject's cognitive profile. These results highlight the importance of evaluating patients who undergo radiotherapy before and after treatment and understanding neuropsychological scores associated with the subjects' complaints (AU)

INTRODUÇÃO: Tumores cerebrais são os tumores sólidos mais comuns e o segundo maior grupo de neoplasias diagnosticadas na infância. O tratamento inclui cirurgia, radioterapia e quimioterapia. No entanto, a radioterapia pode causar complicações, como, por exemplo, déficits cognitivos. DESCRIÇÃO DO CASO: Descrevemos o caso de uma criança diagnosticada com tumor cerebral e avaliada antes e após tratamento com radioterapia para investigar declínio cognitivo pós-tratamento. Os resultados demonstraram um declínio nos escores de Quociente de Inteligência (QI) e uma reversão da predominância em habilidades verbais e não verbais. Após a radioterapia, o sujeito demonstrou lentidão, déficits acadêmicos e dificuldade para aprender novas informações. COMENTÁRIO: Embora a avaliação pós-tratamento tenha mostrado escores compatíveis com a média, a comparação entre as avaliações pré e pós-tratamento evidenciaram o impacto da radioterapia sobre o perfil cognitivo do paciente. Esses resultados salientam a importância de avaliar pacientes tratados com radioterapia antes e após o tratamento e de entender os escores neuropsicológicos associados às queixas dos pacientes (AU)

Neuropsychological assessment before and after radiotherapy in a child with an intracranial tumor: case report.

INTRODUCTION: Brain tumors are the most common solid tumors and the second largest group of neoplasms diagnosed in childhood. Treatment includes surgery, radiotherapy, and chemotherapy. However, radiotherapy can cause complications, e.g., cognitive deficits. CASE DESCRIPTION: We describe the case of a child diagnosed with a brain tumor evaluated before and after radiotherapy to investigate cognitive decline after treatment. The results showed a decline in Intelligence Quotient (IQ) scores and reversal of the predominance of verbal and nonverbal skills. After radiotherapy, the subject showed slowness, academic deficits, and difficulties learning new information. COMMENTS: Even though the post-treatment evaluation showed scores compatible with the average, comparison between pre- and post-treatment evaluations demonstrated the impact of radiotherapy on the subject's cognitive profile. These results highlight the importance of evaluating patients who undergo radiotherapy before and after treatment and understanding neuropsychological scores associated with the subjects' complaints.

Perfil neuropsicológico de adultos com queixas de desatenção: diferenças entre portadores de TDAH e controles clínicos / Neuropsychological profile of adults with attention deficits: differences between ADHD and clinical controls

CONTEXTO: A distinção entre portadores e não portadores de transtorno do déficit de atenção e hiperatividade (TDAH) com queixas de desatenção representa um desafio clínico frequente, aspecto agravado pelo predomínio de estudos na literatura que comparam os perfis de portadores a controles normais, mas não a controles clínicos com queixas atencionais. OBJETIVO: Comparar o desempenho neuropsicológico de adultos portadores de TDAH segundo o Manual de Diagnóstico e Estatística das Perturbações Mentais (DSM-IV) com controles clínicos com queixas de desatenção encaminhados para avaliação neuropsicológica. MÉTODOS: Foram obtidos retrospectivamente prontuários relativos a todos os indivíduos adultos que apresentavam desatenção como queixa principal, encaminhados para avaliação neuropsicológica num intervalo de dois anos em serviço especializado, e comparados todos os portadores de TDAH (n = 56; 64,28 por cento de homens) a uma amostra de controles clínicos extraídos da mesma amostra, sem TDAH (n = 29; 58,62 por cento de homens), com idades entre 18 e 59 anos. Foram utilizadas medidas de atenção, funções executivas e memória. RESULTADOS: Os grupos revelaram-se pareados quanto a idade, escolaridade, distribuição por sexo e QI (p > 0,05). Não foram observadas diferenças entre os grupos nos testes formais para avaliação de capacidade atencional; entretanto, o grupo de portadores de TDAH apresentou pior desempenho em tarefas que envolviam memória operacional auditivo-verbal. CONCLUSÃO: Adultos portadores de TDAH podem se diferenciar de controles clínicos encaminhados com queixas de desatenção pelo desempenho deficitário em tarefas que endereçam memória operacional auditivo-verbal.

BACKGROUND: Discriminating attention deficit hyperactivity disorder (ADHD) from non-ADHD individuals referred to evaluate attention deficits is a challenge that is often faced by clinicians, which might be aggravated by the design of the majority of studies that compare ADHD to normal control comparison individuals, instead of comparing to control clinical individuals. OBJECTIVE: To compare neuropsychological performance of DSM-IV ADHD adults and clinical control individuals with attention complaints referred for neuropsychological evaluation. METHODS: We conducted a retrospective analysis through the database of a private clinic specialized in neuropsychological evaluation along a two year period. ADHD adults (n = 56; 64.28 percent male) were compared to control individuals from the same sample referred due to inattention (n = 29; 58.62 percent male), with an age range from 18 to 59 years old. Measures of attention, executive functions and memory were used. RESULTS: Groups were paired by age, schooling level, gender distribution and IQ (p > 0.05). We found no differences regarding performances in attention tasks; however, ADHD individuals showed worse performances in tasks that demand verbal working memory. DISCUSSION: When comparing ADHD adults and control individuals with complaints of attention deficits, the first group presented worse performance only in verbal working memory tasks.

Terapia cognitivo-comportamental e o TDAH subtipo desatento: uma área inexplorada

O Transtorno de Déficit de Atenção/Hiperatividade (TDAH) é definido a partir de um curso crônico o qual conduz a diversos comprometimentos. Em adultos, as maiores dificuldades são de organização, sustentação da atenção e memória. O transtorno apresenta como características nucleares a desatenção, a hiperatividade e a impulsividade, e seu diagnóstico é fundamentalmente clínico. Nosso objetivo é relatar o caso de uma cliente adulta diagnosticada com TDAH subtipo desatento e Depressão Maior, tratada apenas com Terapia Cognitivo-Comportamental (TCC) em 20 sessões. Inicialmente serão apresentadas as características clínicas do TDAH e breve revisão do tratamento com TCC. As medidas pré e pós-tratamento envolveram o Inventário de Depressão de Beck e Adult Self-Report Scale. Entre as intervenções utilizadas estavam a psicoeducação, o questionamento socrático e as estratégias de organização. Após a TCC a cliente não mais preenche critérios para depressão maior, além de apresentar redução dos sintomas de TDAH.

Attention Deficit Hyperactivity Disorder (ADHD) is defined from a chronic course which leads to several impairments. In adults, the greatest difficulties are in organization, sustained attention and memory. The disorder presents as core characteristics: inattention, hyperactivity and impulsivity and its diagnosis is mainly clinical. Our aim is to report the case of an adult client diagnosed with ADHD inattentive subtype and Major Depression, treated only with Cognitive-Behavioral Therapy (CBT) in 20 sessions. Initially we will present the clinical characteristics of ADHD and a brief review of the treatment of ADHD with CBT. We will then describe the search in the literature about the efficacy of CBT without medication in adults with ADHD inattentive subtype. The measures pre and post-treatment were: Beck Depression Inventory and Adult Self-Report Scale. Some interventions were psychoeducation, Socratic questioning and strategies to improve organization. After CBT, the client no longer meets criteria for major depression and there was a decrease in symptoms of ADHD.