The role of acetylcholinesterase and butyrylcholinesterase activity in the development of delirium in acute stroke.

Aim: Our study aimed to test whether plasma acetylcholinesterase and butyrylcholinesterase enzyme activity were related to the presence and intensity of delirium in acute stroke patients. Methods: We carried out a matched (age and gender) case-control study, in a sample of consecutive patients with an acute infarct or intracerebral haemorrhage (≤7 days). We assessed delirium using the DSM-5 criteria and the Delirium Rating Scale, and we measured plasma acetylcholinesterase and butyrylcholinesterase enzyme activity after the patient's admission in the stroke unit and before hospital discharge. Mantel-Haenszel's chi-square was used to test bivariate associations between cases (delirious patients) and controls (non-delirious patients). Results: At admission in the stroke unit, cases and controls did not present significant differences in plasma acetylcholinesterase or butyrylcholinesterase activity. At hospital discharge (18 cases and 21 controls) patients who have had delirium at admission had higher levels of butyrylcholinesterase activity. Butyrylcholinesterase activity may secondarily increase due to the inflammatory process associated with neuronal dysfunction in delirium patients.

O nascimento e o desenvolvimento da neuro-psicanálise / The birth and development of neuro-psychoanalysis / El nacimiento y desarrollo del neuro-psicoanálisis

A Neuro-Psicanálise é uma área de investigação e estudo conceptual e epistemológico focado na reavaliação das hipóteses propostas pelo modelo psicanalítico da mente perante o recente manancial de novos dados científicos provindo de diferentes áreas de Cérebro e da sua atividade cerebral, o que tem permitindo o desenvolvimento e esclarecimento dos modelos neuro-dinâmicos relacionados com a atividade mental tanto consciente, assim como inconsciente. Os autores fizeram uma resenha sobre as circunstâncias de ordem histórica, filosófica e científica por detrás do nascimento deste movimento de diálogo entre a Psicanálise e as Neurociências Modernas, a Sociedade Internacional para a Neuro-Psicanálise, cujos fundamentos históricos estão consubstanciados na própria obra e vida de Sigmund Freud, o qual iniciou a vida profissional, como investigador em laboratórios de histologia médica, aí se interessou pelo estudo do sistema nervoso central e mais tarde iniciou atividade clínica em Neurologia. Somente a partir dos anos 50 do Seculo XX ocorreram as primeiras iniciativas precursoras para uma investigação neurocientífica moderna e foi na década de 80 que começou a surgir o manancial de dados científicos provindos de diferentes áreas de investigação neurológica, os quais permitem aventar as possibilidades de existirem eventuais correlações e correspondências entre os termos psicológicos e psicanalíticos com certas áreas e circuitos neurofisiológicos do Cérebro, assim possibilitando reabertura de um diálogo tão desejado por Freud e expresso na sua monografia intitulada: "Projecto para uma Psicologia Científica" de 1895, entre o modelo psicanalítico da Mente e os modelos neurobiológicos e neurocientíficos do Cérebro.

Neuro-Psychoanalysis is an area of conceptual and epistemological research focused on the reevaluation of hypotheses proposed by the psychoanalytic model of Mind (Psyché) facing recent and new scientific data emerging from the investigations over different Brain's areas and activities, which allows a development and clarification of new neuro-dynamic models related to both conscious and unconscious mental activity. The authors reviewed the historical, philosophical and scientific circumstances behind the birth of this movement of dialogue between Psychoanalysis and Modern Neurosciences, the International Society for Neuro-Psychoanalysis, whose historical foundations are embodied in the work and life of Sigmund Freud, who started his professional life as a researcher in medical histology laboratories and became interested in the study of the central nervous system and later on began his clinical practice in Neurology. Only at the decade of the 50s, the first precursor initiatives over modern neuroscientific research have taken place and only at the 80s emerge several sources of scientific data from different areas of neurological research which allowed the first possibilities for possible correlations and correspondences between psychological and psychoanalytic terms with certain areas and neurophysiological circuits of the Brain, thus enabling the reopening of a dialogue desired by Freud, in his monograph entitled: "Project for a Scientific Psychology" from 1895, between the psychoanalytic model of Mind and new neurobiological and neuroscientific models of the Brain.

El neuro-psicoanálisis es un área de investigación y de estudio conceptual y epistemológico centrado en la reevaluación de las hipótesis propuestas por el modelo psicoanalítico de la Mente frente a la riqueza reciente de nuevos datos científicos provenientes de diferentes áreas del Cerebro y su actividad cerebral, lo que ha permitido desarrollo y clarificación de modelos neurodinámicos relacionados tanto con la actividad mental consciente como inconsciente. Los autores revisaron las circunstancias históricas, filosóficas y científicas detrás del nacimiento de este movimiento de diálogo entre la Psicoanálisis y las Neurociencias, la Sociedad Internacional para el Neuro-Psicoanálisis, cuyos fundamentos históricos están encarnados en el trabajo y la vida de Sigmund Freud quien comenzó su vida profesional como investigador en laboratorios de histología médica e se interesó en el estudio del sistema nervioso central y más tarde comenzó la actividad clínica en Neurología. Solo a partir de los años 50 del siglo XX tuvieron lugar las primeras iniciativas precursoras para la investigación neurocientífica moderna, y fue en los años 80 que comenzó a surgir la fuente de datos científicos de diferentes áreas de la investigación neurológica, lo que permite avanzar las posibilidades de la existencia de posibles correlaciones y correspondencias entre términos psicológicos y psicoanalíticos con ciertas áreas y circuitos neurofisiológicos del cerebro, permitiendo así la reapertura de un diálogo tan deseado por Freud en su monografía titulada: "Proyecto para una psicología científica" de 1895 entre el modelo psicoanalítico de la mente y los nuevos modelos neurobiológicos y neurocientíficos del cerebro.

Headache at the Chronic Stage of Ischemic Stroke.

BACKGROUND: Headache in ischemic stroke survivors after the acute stage is incompletely described. OBJECTIVE: We aimed to prospectively describe the characteristics of headache and the predictors of headache at the chronic stage after ischemic stroke. METHODS: We conducted a prospective observational cohort study including 102 acute ischemic stroke patients admitted to a Stroke Unit. Patients were interviewed at the acute and the chronic stage (12 months after stroke). Characteristics of those headaches were collected using a previously validated headache questionnaire enabling headache classification following the International Headache Society criteria. Pre-stroke headache history was registered using the same instrument. RESULTS: Forty-five patients out of 89 with completed follow-up (51%) reported headache at the chronic stage. In most of the patients, headache was sporadic, mild, pressure-like, with a duration of minutes to hours, with characteristics of tension-type headache in 51% (n = 23/45). Headache was a reactivation of pre-stroke headache in 33% (n = 15/45), different from pre-stroke headache in 44% (n = 20/45), and of new-onset in 22% (n = 10/45). Only 1 patient had a new-onset headache at the acute stage that persisted with the same characteristics at the chronic stage. Pre-stroke headache (OR = 5.3; 95% CI [2.01-13.98] P = .001) and female sex (OR = 3.5; 95% CI [1.3-9.4] P = .013) predicted headache at the chronic stage after stroke, controlling for age, severity, and location of stroke. CONCLUSIONS: Headache in ischemic stroke survivors at the chronic stage is more frequent in women and in patients with pre-stroke headache. It is most frequently a headache with different characteristics of the pre-stroke headache and only rarely a new-onset headache starting at the acute stage and persisting at the chronic stage.

Neuropsychiatric sequelae of stroke.

Stroke survivors are often affected by psychological distress and neuropsychiatric disturbances. About one-third of stroke survivors experience depression, anxiety or apathy, which are the most common neuropsychiatric sequelae of stroke. Neuropsychiatric sequelae are disabling, and can have a negative influence on recovery, reduce quality of life and lead to exhaustion of the caregiver. Despite the availability of screening instruments and effective treatments, neuropsychiatric disturbances attributed to stroke are currently underdiagnosed and undertreated. Stroke severity, stroke-related disabilities, cerebral small vessel disease, previous psychiatric disease, poor coping strategies and unfavourable psychosocial environment influence the presence and severity of the psychiatric sequelae of stroke. Although consistent associations between psychiatric disturbances and specific stroke locations have yet to be confirmed, functional MRI studies are beginning to unveil the anatomical networks that are disrupted in stroke-associated psychiatric disorders. Evidence regarding biochemical and genetic biomarkers for stroke-associated psychiatric disorders is still limited, and better understanding of the biological determinants and pathophysiology of these disorders is needed. Investigation into the management of these conditions must be continued, and should include pilot studies to assess the benefits of innovative behavioural interventions and large-scale cooperative randomized controlled pharmacological trials of drugs that are safe to use in patients with stroke.

Apathy and suicide-related ideation 3 months after stroke: a cross-sectional study.

BACKGROUND: Both apathy and suicide are common in poststroke patients. However, the association between poststroke apathy and suicide-related ideation (SI) in Chinese stroke patients is not clear and poorly understood. The aim of this study was to examine the association between apathy and SI in stroke. METHODS: A cross-sectional study was conducted to investigate the association in 518 stroke survivors from Acute Stroke Unit of the Prince of Wales Hospital in Hong Kong. Geriatric Mental State Examination-Version A (GMS) and Neuropsychiatric Inventory-apathy subscale (NPI-apathy) were employed to assess poststroke SI and apathy, respectively. Patients' clinical characteristics were obtained with the following scales: the National Institutes of Health Stroke Scale (NIHSS), the Mini-Mental State Examination (MMSE), and the Geriatric Depression Scale (GDS). RESULTS: Thirty-two (6.2%) stroke survivors reported SI. The SI group had a significantly higher frequency of NPI-apathy than the non-SI group (31.2% vs 5.3%, p < 0.001). The SI group also had higher GDS scores (10.47 ± 3.17 vs 4.24 ± 3.71, p < 0.001). Regression analysis revealed that NPI-apathy (OR 2.955, 95% CI 1.142-7.647, p = 0.025) was a significant predictor of SI. The GDS score also predicted SI (OR 1.436, 95% CI 1.284-1.606, p < 0.001). CONCLUSIONS: The current findings show that poststroke apathy is an independent predictor of SI 3 months after stroke. Early screening for and intervention targeting apathy through medication and psychological treatments may be necessary to improve stroke patients' apathy and reduce SI.

Post-stroke apathy: an exploratory longitudinal study.

INTRODUCTION: Post-stroke apathy is a disturbance of motivation evidenced by low initiative, difficulties in starting, sustaining or finishing any goal-directed activity, low self-activation or self-initiated behavior and emotional indifference. Apathy is a common behavioral disturbance in stroke survivors. We aimed to analyze the relationship between post-stroke apathy at 1 year after stroke and (1) apathy in acute phase; (2) demographic, pre-stroke predisposing conditions (previous mild cognitive impairment, alcohol abuse, mood/anxiety disorder) and clinical features (stroke type and location, neurological symptoms); (3) post-stroke depression and post-stroke cognitive impairment, and (4) post-stroke functional outcome, quality of life and the perception of health. METHODS: Consecutive stroke (infarct/intracerebral hemorrhage) patients without aphasia or consciousness disturbances were included in the acute phase of stroke and assessed at 1 year after stroke. We assessed apathy with the clinically rated version of the Apathy Evaluation Scale. We also assessed post-stroke depression (Montgomery Asberg Depression Rating Scale) and post-stroke cognitive impairment (attention, mental flexibility, verbal, motor and graphomotor initiative, and non-verbal and verbal abstract reasoning, and Mini-Mental State Examination), functional outcome (Barthel Index), quality of life and perception of health (EuroQol). Data were analyzed using bivariate associations (χ(2) and t test) and stepwise multivariate analysis. RESULTS: We included 76 stroke patients [32.9% women, mean age 62.9 years (SD = 10.9) and a mean of 6.9 (SD = 4.3) years of education]. Apathy was present in 17 patients in the acute phase and in 18 (23.7%) patients at 1 year after stroke. At 1 year after stroke, 41% of the acute apathetic patients remained apathetic. Sixty-one percent of new cases of post-stroke apathy were detected. Post-stroke apathy was associated only with previous cognitive impairment, apathy in acute stroke, post-stroke cognitive impairment, verbal abstract reasoning and with worse Barthel Index scale scores. In the multivariate logistic regression model, verbal abstract reasoning (odds ratio, OR = 7.03) and apathy in acute stroke (OR = 3.8) were identified as independent factors for post-stroke apathy at 1 year. Apathetic patients did not report worse quality of life or health. CONCLUSION: Apathy in acute stroke phase was a reliable indicator of post-stroke apathy. Apathy should be assessed in both phases. Verbal abstract reasoning impairment was also an independent factor for post-stroke apathy impairing patients' ability to reason about goal-directed activity. Even though apathetic patients had worse post-stroke functional outcome, they did not report losing quality of life or having worse health.

Apathy secondary to stroke: a systematic review and meta-analysis.

BACKGROUND: Apathy is a disturbance of motivation, frequent in survivors of stroke. Several studies have evaluated the rate of apathy secondary to stroke and risk factors. Different conclusions and contradictory findings have been published. We aimed to perform a systematic review and meta-analysis of all studies evaluating apathy secondary to stroke to better estimate its rate and risk factors, and explore associations with poorer outcomes. METHODS: We searched PubMed, Cochrane Library, PsychINFO and PsycBITE databases and screened references of included studies and review articles for additional citations. Search results and data extraction was performed independently. We systematically reviewed available publications reporting investigations on ischemic and intracerebral hemorrhagic stroke and apathy. Quality assessment of the studies was performed independently. Subgroup analyses were performed according to stroke phase (acute and post-acute), stroke past history (first-ever and any-stroke) and patient age (younger and older patients). Pooled odds ratios (OR) and standardized mean difference, and 95% confidence intervals (CI), were derived by random-effects meta-analysis. Heterogeneity was assessed with I(2) test. RESULTS: From the initial 1,399 publications, we included 19 studies (2,221 patients). The pooled rate of apathy was 36.3% (95% CI 30.3-42.8; I(2) = 46.8), which was similar for acute [39.5% (95% CI 28.9-51.1)] and post-acute phase [34.3% (95% CI 27.8-41.4)], and about three times higher than the rate of depression [12.1% (95% CI 8.2-17.3)]. Apathetic patients were on average 2.74 years older (95% CI 1.25-4.23; I(2) = 0%). No gender differences were found. Depression (OR 2.29; 95% CI 1.41-3.72; I(2) = 44%) and cognitive impairment (OR 2.90; 95% CI 1.09-7.72; I(2) = 14%) were more frequent and severe in apathetic patients. Apathy rate was similar for ischemic and hemorrhagic stroke type and for left- and right-sided hemispheric lesions. Clinical global outcome was similar between apathetic and nonapathetic patients. CONCLUSION: Apathy secondary to stroke is a more frequent neuropsychiatric disturbance than depression. Apathetic patients are more frequently and severely depressed and cognitively impaired. A negative impact of apathy secondary to stroke on clinical global outcome cannot be ascribed. Future research should properly address its predictor factors and evaluate the impact of apathy treatment options in stroke patients.

A study of suicidal thoughts in acute stroke patients.

BACKGROUND: In previous studies, suicidal thoughts in stroke patients were related to depression and recurrent stroke. The aim of this study was to describe the presence and correlates of suicidal thoughts in acute stroke patients. METHODS: We assessed the presence of suicidal thoughts in a sample of 177 consecutive acute stroke patients (≤ 4 days), using the item "suicidal thoughts" of the Montgomery and Asberg Depression Rating Scale. RESULTS: Fifteen percent of acute stroke patients had suicidal thoughts, 22% of them with explicit plans to complete suicide. Suicidal thoughts were more frequent in patients with a lower educational level (Chi-square 4.69; P = .05), previous mood disorder (Chi-square 12.80; P = .001), diabetes (Chi-square 5.48; P = .04), and acute depression (Chi-square 16.59; P = .001). In logistic regression, a lower educational level (odds ratio [OR] 5.13; 95% confidence interval [CI] 0.80-33.29), diabetes (OR 3.15; 95% CI 0.81-12.28), a previous mood disorder (OR 4.22; 95% CI 1.12-15.86), and depression (OR 7.82; 95% CI 1.58-38.71) were independent factors predicting suicidal thoughts (R(2) = 0.39%). The 23 depressed acute stroke patients with suicidal thoughts were similar in demographic, clinical, and lesion variables, and were similar in profile of depression to the 63 patients with depression but without suicidal thoughts, except for a higher frequency of a previous mood disorder in the former group (Chi-square 7.87; P = .01). CONCLUSIONS: Suicidal thoughts may develop shortly after the onset of acute stroke, especially in patients with a lower educational level, a previous mood disorder, and those who developed depressive symptoms in the acute phase of stroke. The high frequency of suicidal thoughts makes the assessment of suicidal behavior in patients with acute stroke an important clinical issue.

Mania and stroke: a systematic review.

BACKGROUND: Mania is a rare consequence of stroke and according to the sparse published information it is difficult to describe its demographic, clinical and prognostic characteristics. METHODS: We performed a systematic review of all cases of mania and stroke to describe those characteristics. Studies were identified from comprehensive searches of electronic databases, reference lists of the studies collected and handbooks. Two authors independently assessed abstracts, and collected and extracted data. RESULTS: From 265 abstracts, 139 were potentially relevant. For the first analysis, which tries to answer the clinical question of the relationship between mania and stroke, 49 studies met the inclusion criteria and described 74 cases. For the second analysis, we looked for an explicit temporal and causal relationship between manic symptoms and stroke, and selected 32 studies describing 49 cases. In both analyses, the typical patient was male, without a personal or family history of psychiatric disorder, with at least one vascular risk factor, but without subcortical atrophy and had suffered a right cerebral infarct. The majority of patients (92%) presented elevated mood as the first symptom. The other frequent symptoms were an increased rate or amount of speech (71%), insomnia (69%) and agitation (63%). CONCLUSIONS: Post-stroke mania should be considered in any manic patient who presents concomitant neurological focal deficits and is older than expected for the onset of primary mania. The results of a systematic study of mania in acute stroke with subsequent follow-up and data from diffusion MR or perfusion CT in a multicenter study with a central database would be relevant.

Temperament in Portuguese university students as measured by TEMPS-A: implications for professional choice.

BACKGROUND: The structure of temperament displays subaffective traits as attributes of adaptive value. There are few studies on how different professions compare on temperaments. Our aim was to examine the relationship between the choices of Portuguese students in their fields of study, and their respective temperaments. METHODS: The sample included 1386 students from six different universities (law, engineering, arts, medicine, psychology, and nursing), of both genders (67% female), and ages between 17 and 58 (X + or - SD = 21 + or - 3.4). RESULTS: Law and art students presented a cyclothymic or irritable temperament. Engineering students presented a hyperthymic temperament. Psychology and nursing students presented predominantly depressive and anxious temperaments. Medicine students were least extreme in temperament scores or frequencies. LIMITATIONS: Nursing students came largely from one university located in a Portuguese city (northeast from Lisbon) which could be a potential limitation to be confirmed. CONCLUSIONS: Distinct temperamental profiles of students enrolled in different professional fields could be identified in our sample taking into account the presence or absence of excessive temperaments. Future physicians did not present a predominant temperament, future lawyers and artists presented predominantly a cyclothymic or irritable temperament, future engineers presented a hyperthymic temperament and, future psychologists and nurses presented predominantly depressive and anxious temperaments.

Poststroke emotional and behavior impairment: a narrative review.

Emotional and behavioral disturbances are a frequent complication in stroke survivors. They are underdiagnosed, have a high impact on quality of life and are often a precipitant of institutionalization. For the caregivers of stroke survivors, these disturbances are a main cause of exhaustion. Health professionals have an insufficient training in their diagnosis and management which demands qualified skills and dedication of a multiprofessional team. In this article, we update some of the most common or relevant poststroke emotional and behavioral disturbances, including poststroke mania and poststroke depression, poststroke anxiety disorders, posttraumatic stress disorder, personality changes with focus on apathy and disturbances of emotional expression control. Significant advances in the management of poststroke emotional and behavioral disturbances will need the use of comparable instruments and methods and multicenter collaboration.

Validation of the Temperament Evaluation of Memphis, Pisa, Paris and San Diego (TEMPS-A): Portuguese-Lisbon version.

BACKGROUND: The TEMPS-A has been validated in 8 languages, the original being American English, and includes among others such Latin languages as Italian, French, and Spanish-Buenos Aires. This is the first Portuguese-Lisbon validation. METHODS: The sample included 1173 students from six different universities and representing most disciplines (such as medicine, law, humanities, engineering, etc.), both sexes (67% female), and ages between 17 and 58 (x+/-SD=21+/-4). Standard psychometric tests were used for internal consistency, validity, and factor analysis. RESULTS: The study upheld the 5 Factor proposed structure of TEMPS-A. Cronbach alpha varied from 0.67 for the depressive and 0.83 for the anxious, with the others in-between. We could retain all 110 items of the Interview Schedule. The highest mean scores were found for the hyperthymic, and the lowest for the irritable. As expected, depressive and anxious subscales had strong correlations, followed by the cyclothymic and anxious, and cyclothymic and irritable; in exploratory factor analysis, these subscales constituted Factor I, contrasted to the depressive and the hyperthymic as a biphasic continuum (Factor II). Females scored higher on the depressive, cyclothymic and anxious, and the males on hyperthymic and irritable. Overall, however, no temperament was "dominant" in this population, all temperaments z-scores being 3.3-4%! LIMITATIONS: Study limited to university students of young age. CONCLUSIONS: TEMPS-A Lisbon is a reliable and valid instrument. The only relatively weak factor is the depressive, which is similar to other language versions. Gender differences and correlations of temperaments are generally similar to other countries. What appears relatively special to the Portuguese is the relatively "balanced" mix of temperaments in this university student population.

Depression in acute stroke.

OBJECTIVE: Depression is one of the most frequent neuropsychiatric disturbances in stroke patients. The clinical aspects and correlations of depression in the first days after acute stroke are less known. This study aimed to 1) assess the frequency of depression, 2) describe the profile of depression of stroke patients and 3) analyze the relation between depression and demographic, predisposing and precipitating conditions, and clinical and imaging data, in acute stroke patients. METHODS: We used the Montgomery-Asberg Depression Rating Scale to assess depression in 178 consecutive acute ( 0.45) of depression between control subjects and acute stroke patients. CONCLUSIONS: Depression was present in almost one-half of the acute stroke patients and was related to previous mood disorder but not not to stroke type or location. Apathy/loss of interest was the predominant clinical feature.

Denial in the first days of acute stroke.

Denial is a disorder of self-awareness that is frequent after acute stroke, with potential negative influence in the care of patients. The aim of this study was to describe the presence and correlates of denial in acute stroke. We assessed denial in a sample of 180 consecutive acute stroke patients (< or =4 days) and in a control group of 50 acute coronary patients using the Denial of Illness Scale (DIS).41% (74) acute stroke patients (mean DIS score=4.1, SD=2.2, range 0 to 10) and 24% (12) acute coronary patients (mean DIS score=3.2, SD=1.5, range 0 to 10) presented denial (chi(2)=4.19, p=.04; U=3405.50, p=.01). Denial was more frequent and severe in patients with lower educational level (chi(2) = 5.04, p=.04; U=2110.50; p=.01), neglect (chi(2) = 21.38, p=.00; U=1130.50; p=.00), cognitive impairment (chi(2) = 6.27, p=.02; U=1181.50; p=.01) and after hemispherical lesions (chi(2) =4.68, p=.05; U=1982.50; p=.04). In logistic regression low educational level, neglect and cognitive impairment were independent factors predicting denial in stroke patients (R(2)= 21%). Patients with denial can express depressive symptoms. Patients with denial had a worse outcome at discharge (chi(2) =4.91, p=.04; U=2918.00; p=.03). Denial is a frequent phenomenon after acute stroke. We propose that there is a multifactorial model for the emergence of denial, lower educational as a predisposing condition, and acute stroke due to hemisphere lesion and causing neglect and cognitive impairment as precipitating events. All these factors limit patients' assessment of their condition and body functions.

Delirium in acute subarachnoid haemorrhage.

BACKGROUND: Delirium may be a presenting feature in acute subarachnoid haemorrhage (SAH). The aim of this study was to investigate the risk factors for delirium in acute SAH and to analyse the relation between delirium and location and amount of haematic densities and hydrocephalus. METHODS: We assessed delirium in a sample of 68 consecutive patients with acute (< or =4 days) SAH (33 aneurysmal, 33 non-aneurysmal, including 9 with perimesencephalic haemorrhage), before aneurysmal treatment, using DSM-IV-R criteria and the Delirium Rating Scale (DRS). DRS scores were related to: (1) the total amount of haematic densities at 10 basal cisterns/fissures and in the 4 ventricles, using a validated rating scale, (2) the haematic densities in the prepontine cistern and the convexity of the brain and (3) hydrocephalus, using the bicaudate index, obtained from a review of admission CT scans. RESULTS: Eleven acute SAH patients presented with delirium. Older age (U = 316.5, p = 0.04), alertness disturbance (chi(2) = 5.1, p = 0.02, OR = 7.6, 95% CI = 1.5-37.3), aphasia (U = 61.5, p = 0.007) and a Hunt and Hess score >2 (U = 362.5, p = 0.02) were associated with delirium. Higher amounts of intraventricular haematic densities (chi(2) = 4.43, p = 0.04, U = 158, p = 0.001) and hydrocephalus (U = 215, p = 0.009) were also associated with higher DRS scores. Two delirious patients had basofrontal haematomas. CONCLUSIONS: Delirium was detected in 16% of acute SAH patients. Intraventricular bleeding, hydrocephalus and basofrontal haematomas contribute to the pathogenesis of delirium, through damage to anatomical networks subserving sustained attention, declarative memory and the expression of emotional behaviour.

Delirium in the first days of acute stroke.

BACKGROUND AND PURPOSE: Delirium is an acute, transient disorder of cognition and consciousness with fluctuating intensity. The aim of this study was to investigate the presence and the risk factors for delirium in the first days after stroke onset. PATIENTS AND METHODS: We assessed delirium prospectively in a sample of 218 consecutive patients (mean age 57 years) with an acute (/= 10). RESULTS: 29 (13%) acute stroke patients (mean DRS score = 13.2, SD = 2.3) and only one (2 %) acute coronary patient had delirium (chi(2) = 5.2, p = 0.02). In nine patients delirium was secondary to stroke without any additional cause, in 10 patients there were also medical complications and in the remaining 10 there were multiple potential causes for delirium. Delirium was more frequent after hemispherical than after brainstem/cerebellum strokes (p = 0.02). No other statistically significant associations with stroke locations were found. Medical complications (OR = 4.3; 95% CI = 1.8 to 10.2), neglect (OR = 3.5; 95% CI = 1.3 to 9.2), intracerebral haemorrhage (OR = 3.1; 95% CI = 1.3 to 7.5) and age >/= 65 (OR = 2.4; 95% CI = 1.0 to 5.8) were independent factors to the development of delirium in stroke patients. CONCLUSION: Delirium was more frequent in stroke than in coronary acute patients. Among stroke patients, delirium was most frequent in older patients, in those with neglect, with medical complications and with intracerebral haemorrhages. These findings indicated that delirium in acute stroke patients 1) is not a non-specific consequence of acute disease and hospitalisation and 2) is secondary to hemisphere brain damage and to metabolic disturbances due to medical complications.

Delirium in acute stroke.

Delirium is the presenting feature in a few stroke patients, but can complicate the clinical course of acute stroke in up to 48% of cases. Old age, extensive motor impairment, previous cognitive decline, metabolic and infectious complications, and sleep apnoea are all predisposing conditions for delirium. Patients with delirium have longer hospitalizations and a poorer prognosis, and are at increased risk of developing dementia. The identification of the patients at risk and non-pharmacological preventative interventions are the key measures in the management of delirium.