[Atrial fibrillation and cognitive impairment: a narrative review]. / Fibrilación auricular y deterioro cognitivo: una revisión narrativa.

INTRODUCTION: Atrial fibrillation (AF) is the most common arrhythmia in clinical practice and its incidence and prevalence increase with age, as does cognitive impairment (CI). DEVELOPMENT: Prospective observational studies have shown that AF can significantly increase the risk of stroke, which is an important cause of CI, but it has also been established that the association between the two diseases may be independent of stroke and other shared risk factors. However, the pathophysiological mechanism linking the two entities is still unclear as it is likely to be a multifactorial process (cardioembolic silent strokes, proinflammatory states and cerebral hypoperfusion), with preliminary evidence of a link between atrial cardiomyopathy without AF and cognitive dysfunction. The association between AF and CI raises the possibility that therapeutic interventions aimed at managing this arrhythmia may prevent or delay the onset of CI. Anticoagulation has been shown to significantly reduce the risk of stroke in patients with AF and, with it, the risk of CI, but the effect of other therapeutic interventions such as rhythm and rate control is inconclusive. CONCLUSIONS: AF and CI are an important health problem worldwide and the demographic trend predicts exponential growth of both conditions in the coming years. Therefore, it seems necessary to increase our knowledge of the pathophysiological mechanisms related to them in order to establish effective preventive strategies.

TITLE: Fibrilación auricular y deterioro cognitivo: una revisión narrativa.Introducción. La fibrilación auricular (FA) es la arritmia más común en la práctica clínica y su incidencia y prevalencia aumentan con la edad, como ocurre con el deterioro cognitivo (DC). Desarrollo. Estudios observacionales prospectivos han demostrado que la FA puede aumentar significativamente el riesgo de sufrir un ictus, y éste es una causa importante de DC, pero también se ha establecido que la asociación entre ambas enfermedades puede ser independiente del ictus y otros factores de riesgo compartidos. Sin embargo, el mecanismo fisiopatológico que relaciona ambas entidades todavía no se conoce con exactitud, ya que es probable que se trate de un proceso multifactorial (ictus silentes cardioembólicos, estados proinflamatorios e hipoperfusión cerebral), y existe evidencia preliminar de una relación entre la miocardiopatía auricular sin FA y la disfunción cognitiva. La asociación entre FA y DC plantea la posibilidad de que las intervenciones terapéuticas dirigidas al manejo de esta arritmia puedan prevenir o retrasar la aparición del DC. La anticoagulación ha demostrado reducir de forma significativa el riesgo de ictus en pacientes con FA y, con ello, el riesgo de DC, pero el efecto de otras intervenciones terapéuticas, como el control del ritmo y de la frecuencia, no es concluyente. Conclusiones. La FA y el DC constituyen un importante problema de salud a nivel mundial, y la tendencia demográfica augura el crecimiento exponencial de ambas entidades en los próximos años. Por ello, parece necesario ampliar el conocimiento respecto a los mecanismos fisiopatológicos que las relacionan con el objetivo de establecer estrategias preventivas eficaces.

Fibrilación auricular y deterioro cognitivo: una revisión narrativa / Atrial fibrillation and cognitive impairment: a narrative review

Introducción: La fibrilación auricular (FA) es la arritmia más común en la práctica clínica y su incidencia y prevalencia aumentan con la edad, como ocurre con el deterioro cognitivo (DC). Desarrollo: Estudios observacionales prospectivos han demostrado que la FA puede aumentar significativamente el riesgo de sufrir un ictus, y éste es una causa importante de DC, pero también se ha establecido que la asociación entre ambas enfermedades puede ser independiente del ictus y otros factores de riesgo compartidos. Sin embargo, el mecanismo fisiopatológico que relaciona ambas entidades todavía no se conoce con exactitud, ya que es probable que se trate de un proceso multifactorial (ictus silentes cardioembólicos, estados proinflamatorios e hipoperfusión cerebral), y existe evidencia preliminar de una relación entre la miocardiopatía auricular sin FA y la disfunción cognitiva. La asociación entre FA y DC plantea la posibilidad de que las intervenciones terapéuticas dirigidas al manejo de esta arritmia puedan prevenir o retrasar la aparición del DC. La anticoagulación ha demostrado reducir de forma significativa el riesgo de ictus en pacientes con FA y, con ello, el riesgo de DC, pero el efecto de otras intervenciones terapéuticas, como el control del ritmo y de la frecuencia, no es concluyente. Conclusiones: La FA y el DC constituyen un importante problema de salud a nivel mundial, y la tendencia demográfica augura el crecimiento exponencial de ambas entidades en los próximos años. Por ello, parece necesario ampliar el conocimiento respecto a los mecanismos fisiopatológicos que las relacionan con el objetivo de establecer estrategias preventivas eficaces.(AU)

Introduction: Atrial fibrillation (AF) is the most common arrhythmia in clinical practice and its incidence and prevalence increase with age, as does cognitive impairment (CI). Development: Prospective observational studies have shown that AF can significantly increase the risk of stroke, which is an important cause of CI, but it has also been established that the association between the two diseases may be independent of stroke and other shared risk factors. However, the pathophysiological mechanism linking the two entities is still unclear as it is likely to be a multifactorial process (cardioembolic silent strokes, proinflammatory states and cerebral hypoperfusion), with preliminary evidence of a link between atrial cardiomyopathy without AF and cognitive dysfunction. The association between AF and CI raises the possibility that therapeutic interventions aimed at managing this arrhythmia may prevent or delay the onset of CI. Anticoagulation has been shown to significantly reduce the risk of stroke in patients with AF and, with it, the risk of CI, but the effect of other therapeutic interventions such as rhythm and rate control is inconclusive. Conclusions: AF and CI are an important health problem worldwide and the demographic trend predicts exponential growth of both conditions in the coming years. Therefore, it seems necessary to increase our knowledge of the pathophysiological mechanisms related to them in order to establish effective preventive strategies.(AU)

Endarterectomy, Stenting, or Medical Treatment for Symptomatic Carotid Near-Occlusion: Results from CAOS, a Multicenter Registry Study.

BACKGROUND AND PURPOSE: The treatment of symptomatic carotid near-occlusion is controversial. Our aim was to analyze the results of carotid endarterectomy and carotid artery stent placement in patients with symptomatic carotid near-occlusion and to identify factors related to technical failure, periprocedural complications, and restenosis. MATERIALS AND METHODS: We conducted a multicenter, prospective nonrandomized study. Patients with angiography-confirmed carotid near-occlusion were included. We assessed the revascularization rate and periprocedural stroke or death. Twenty-four-month clinical and carotid imaging follow-up was performed, and rates of carotid restenosis or occlusion, ipsilateral stroke, and mortality were analyzed. Carotid artery stent placement, carotid endarterectomy, and medical treatment were compared. RESULTS: One hundred forty-one patients were included. Forty-four carotid artery stent placement and 23 carotid endarterectomy procedures were performed within 6 months after the event. Complete revascularization was achieved in 83.6%, 81.8% in the carotid artery stent placement group and 87% with carotid endarterectomy (P = .360). Periprocedural stroke or death occurred in 6% (carotid artery stent placement = 2.3%; carotid endarterectomy = 13%; P = .077) and was not related to revascularization failure. The carotid restenosis or occlusion rate was 8.3% (5% restenosis, 3.3% occlusion); with carotid artery stent placement it was 10.5%; and with carotid endarterectomy it was 4.5% (P = .419). The 24-month cumulative rate of ipsilateral stroke was 4.8% in the carotid artery stent placement group, 17.4% for carotid endarterectomy, and 13.1% for medical treatment (P = .223). Mortality was 12%, 4.5%, and 5.6%, respectively (P = .422). Revascularization failure and restenosis occurred more frequently in patients with full collapse compared with patients without full collapse (33.3% versus 5.6%, P = .009; 21.4% versus 2.9%, P = .032, respectively). CONCLUSIONS: Carotid artery stent placement and carotid endarterectomy are associated with high rates of failure and periprocedural stroke. Carotid near-occlusion with full collapse appears to be associated with an increased risk of technical failure and restenosis. Carotid near-occlusion revascularization does not seem to reduce the risk of stroke at follow-up compared with medical treatment.

Ultrasonographic and hemodynamic characteristics of patients with symptomatic carotid near-occlusion: results from a multicenter registry study.

PURPOSE: The ultrasonographic and hemodynamic features of patients with carotid near-occlusion (CNO) are still not well known. Our aim was to describe the ultrasonographic and hemodynamic characteristics of a cohort of patients with CNO. METHODS: A prospective, observational, nationwide, and multicenter study was conducted from January/2010 to May/2016. Patients with digital subtraction angiography (DSA)-confirmed CNO were included. We collected information on clinical and demographic characteristics, carotid and transcranial ultrasonography and DSA findings, presence of full-collapse, collateral circulation, and cerebrovascular reactivity (CVR). RESULTS: One hundred thirty-five patients were analyzed. Ultrasonographic and DSA diagnosis of CNO were concordant in only 44%. This disagreement was related to the presence/absence of full-collapse: 45% of patients with CNO with full-collapse were classified as a complete carotid occlusion, and 40% with a CNO without full-collapse were interpreted as severe stenosis (p < 0.001). Mean velocities (mV) and pulsatility indexes (PIs) were significantly lower in the ipsilateral middle cerebral artery compared with the contralateral (43 cm/s vs 58 cm/s, p < 0.001; 0.80 vs 1.00, p < 0.001). Collateral circulation was identified in 92% of patients, with the anterior communicating artery (73%) being the most frequent. CVR was decreased or exhausted in 66% of cases and was more frequent in patients with a poor or absent collateral network compared with patients with ≥ 2 collateral arteries (82% vs 56%, p = 0.051). CONCLUSION: The accuracy of carotid ultrasonography in the diagnosis of CNO seems to be limited, with significant discrepancies with DSA. Decreased ipsilateral mV, PI, and CVR suggest a hemodynamic compromise in patients with CNO.

Sex differences in long-term quality of life after stroke: Influence of mood and functional status. / Diferencias de género en la calidad de vida a largo plazo tras un ictus: influencia del estado funcional y el estado de ánimo.

OBJECTIVE: To evaluate long-term quality of life (QoL) in patients who have experienced a stroke and to analyse differences in QoL between sexes. METHODS: We conducted a descriptive, cross-sectional, observational study to gather sociodemographic variables and risk factors; data were also obtained on QoL, mood, and functional status using validated scales. The study was approved by our centre's ethics committee. RESULTS: Our final sample included 124 patients; mean age was 71.30±11.99 years. In the QoL study, the EuroQol-5D dimensions in which participants presented most problems were anxiety/depression (66.7%) and pain/discomfort (62.2%). We found significant inter-sex differences in the dimensions of mobility and usual activities (P=.016 and P=.005, respectively). Women also achieved substantially poorer EuroQoL-5D index values than men (0.45±0.45 vs. 0.65±0.38; P=.013). QoL was found to be associated with dependence for the activities of daily living (r=0.326; P=.001) and depressed mood (r=-0.514; P<.0001). According to the predictive model for the EQ-5D index, 72% of the score on QoL items is explained by functional status, dependence for the activities of daily living (basic and instrumental), and depressed mood. Being married, in contrast, seems to be a protective factor. CONCLUSION: Stroke survivors have poor long-term QoL; this is more marked in women than in men, especially in the dimensions of mobility and usual activities.

The risk of recurrent stroke at 24 months in patients with symptomatic carotid near-occlusion: results from CAOS, a multicentre registry study.

BACKGROUND AND PURPOSE: The risk of recurrent stroke amongst patients with symptomatic carotid near-occlusion (SCNO) has not been clearly established, and its management remains controversial. The aim was to define the 24-month risk of recurrent stroke and to analyse the effect of the different treatment modalities (medical treatment and revascularization) in a population of patients with SCNO. METHODS: A multicentre, nationwide, prospective study from January 2010 to May 2016 was performed. Patients with angiography-confirmed SCNO were included. The primary end-point was ipsilateral ischaemic stroke including periprocedural events within 24 months following the presenting event. Revascularization results and periprocedural complications, ipsilateral transient ischaemic attack, disabling or fatal stroke, and mortality were also noted. RESULTS: The study population comprised 141 patients from 17 Spanish centres. Seventy patients (49.6%) were treated by revascularization (carotid stenting in 47, endarterectomy in 23). Complete revascularization was achieved in 58 patients (83%). Periprocedural stroke or death occurred in 5.7%. The 24-month cumulative incidence of the primary end-point was 11.1% (95% confidence interval 5.8-16.4; n = 15), 12% in the medical treatment group and 10.2% in the revascularization group, log-rank P = 0.817. The cumulative rates of ipsilateral ischaemic stroke or transient ischaemic attack, disabling or fatal stroke, and mortality, were 17%, 4.5% and 7.5%, respectively. CONCLUSIONS: The rate of ipsilateral ischaemic stroke in patients with SCNO seems to be lower than the known rate associated with severe carotid stenosis without near-occlusion. The potential benefit of revascularization in the prevention of stroke in patients with SCNO may be influenced by the effectiveness and safety of the procedure.

A stroke care management system prevents outcome differences related to time of stroke unit admission.

INTRODUCTION: Evidence supports that admitting patients with stroke during different hospital work periods is related to distinct outcomes. We aimed to analyse outcomes in patients according to the period and time of admission to the stroke unit. METHODS: Retrospective study. For purposes of data analysis, patients were grouped according to the following time periods: a) day of the week, b) period of the year, c) shift. We analysed demographic characteristics, stroke type and severity, and the percentage undergoing thrombolysis in each group. The measures used to evaluate early outcomes were the National Institutes of Health Stroke Scale (NIHSS), neurological complications (NC), and in-hospital mortality. Functional outcome at 3 months was determined using the modified Rankin scale. RESULTS: The stroke unit admitted 1250 patients. We found NC to be slightly more frequent for weekend admissions than for weekday admissions, but this trend does not seem to have influenced in-hospital mortality. Regarding functional outcome at 3 months, 67.0% of weekday vs. 60.7% of weekend admissions were independent (P=.096), as were 65.5% of patients admitted during the academic months vs. 63.5% of those admitted during summer holidays (P=.803). We identified no significant differences in 3-month mortality linked to the day or period of admission; however, for the variable 'shift', 13.2% of the patients died during the morning shift, 11.5% during the afternoon shift, and 6.0% during the night shift (P=.017). We identified a trend toward higher rates of thrombolysis administration on weekdays, during the morning shift, and during the academic months. CONCLUSIONS: Time of admission to the stroke unit did not affect early outcomes or functional independence at 3 months.

Association between subclinical carotid atherosclerosis, hyperhomocysteinaemia and mild cognitive impairment.

OBJECTIVE: Evidence suggests that intima-media thickness (IMT) and plasma homocysteine (Hcy) levels are associated with one another, and both appear to be related to cognitive dysfunction. However, no connection between both factors taken together and mild cognitive impairment (MCI) has been established. This study analysed potential relationships between IMT, Hcy and MCI. METHODS: We included 105 patients with MCI and 76 controls with no history of vascular disease. All participants underwent laboratory analyses, a carotid ultrasound, and clinical and neuropsychological assessment. We used the Mantel-Haenszel test (MHT), ANCOVA and multiple linear regression models (MLRM) to examine any associations between IMT, Hcy and cognitive state. RESULTS: The MHT revealed a significant association between IMT and risk of MCI (z = 4.285, P < 0.0001). The OR for the upper quartile vs the lower quartile was 5.12 (95% CI: 2.12-12.36). MHT also showed a clear association between Hcy levels and risk of MCI (z = 3.01, P = 0.003). OR for the upper vs the lower quartile was 3.39 (95% CI: 1.41-8.12). Additionally, we found a correlation between IMT and Hcy (r = 0.162, P = 0.032). CONCLUSIONS: Our results suggest that there is a connection between IMT, Hcy levels and presence of amnestic MCI in a population with no history of clinically manifest atherosclerosis. Furthermore, there is also a connection between the IMT and Hcy levels themselves.

[The impact of neurological and medical complications on the mortality and functional situation of acute stroke patients]. / Impacto de las complicaciones neurologicas y medicas sobre la mortalidad y situacion funcional de pacientes con ictus agudo.

INTRODUCTION: Stroke patients have a high risk of presenting complications, the appearance of which can condition the prognosis of the stroke. We studied the frequency and impact of the onset of several different complications on the early and mid-term prognosis of these patients. PATIENTS AND METHODS: We conducted an observation-based study of the patients admitted to a stroke unit. The complications that occurred while hospitalised were recorded, a distinction being drawn between neurological and medical complications. The study examined their influence, according to the subtype of stroke, on intra-hospital mortality and that at 90 days, as well as on the functional situation at 90 days, by analysing the clinical factors that are predictive for the appearance of complications. RESULTS: The sample consisted of 847 patients. Altogether, 29.5% of the patients presented complications, which were more frequent in haemorrhagic stroke (50.5% versus 26.6%; p < 0.0001). The most usual complications were of a neurological nature (21%). For both subtypes, the presence of complications was associated with a higher rate of mortality both in hospital (2.1% versus 12.6%; p < 0.0001) and at 90 days (5.7% versus 29.6%; p < 0.0001), and a lower probability of independence at 90 days (72.9% versus 30.4%; p < 0.0001). The severity of the stroke on admission revealed itself as the most powerful predictor of the onset of any type of complication. CONCLUSIONS: The appearance of complications during the acute phase of the stroke has an adverse influence on mortality and on the functional prognosis. The identification of predictive factors could reduce the impact upon the progress of acute stroke patients.

TITLE: Impacto de las complicaciones neurologicas y medicas sobre la mortalidad y situacion funcional de pacientes con ictus agudo.Introduccion. Los pacientes con ictus presentan un elevado riesgo de presentar complicaciones. Su aparicion puede condicionar el pronostico del ictus. Estudiamos la frecuencia y el impacto de la aparicion de diversas complicaciones en el pronostico precoz y a medio plazo en estos pacientes. Pacientes y metodos. Estudio observacional de los pacientes ingresados en una unidad de ictus. Se registraron las complicaciones durante su estancia, distinguiendose entre complicaciones neurologicas y medicas. Se estudio la influencia de estas segun subtipo de ictus en la mortalidad intrahospitalaria y a los 90 dias, y en la situacion funcional a los 90 dias, analizandose los factores clinicos predictores para la aparicion de complicaciones. Resultados. Muestra de 847 pacientes. Un 29,5% de los pacientes presento complicaciones, que fueron mas frecuentes en el ictus hemorragico (50,5% frente a 26,6%; p < 0,0001). Las complicaciones mas habituales fueron las neurologicas (21%). Para ambos subtipos, la presencia de complicaciones se asocio a mayor mortalidad intrahospitalaria (2,1% frente a 12,6%; p < 0,0001) y a 90 dias (5,7% frente a 29,6%; p < 0,0001), y menor probabilidad de independencia a 90 dias (72,9% frente a 30,4%; p < 0,0001). La gravedad del ictus al ingreso se mostro como el predictor mas potente en la aparicion de cualquier tipo de complicacion. Conclusiones. La aparicion de complicaciones durante la fase aguda del ictus influye de forma adversa en la mortalidad y en el pronostico funcional. La identificacion de factores predictores podria disminuir el impacto sobre la evolucion del paciente con un ictus agudo.

Functional outcome of stroke and the cumulative experience of a stroke unit.

OBJECTIVE: Patients with acute stroke are more likely to survive and achieve independence if they are treated in a stroke unit. Available information in our setting is scarce. We analyse the outcomes of our patients on the basis of cumulative experience in a stroke unit. PATIENTS AND METHODS: A retrospective cohort study of patients admitted to a stroke unit. We differentiate between two groups according to the year of admission: group A (July 2007-December 2009) and group B (January 2010-December 2011), analysing early outcome based on the score on the National Institute of Health stroke scale and mortality at discharge, and medium-term outcome in terms of mortality and functional status according to the modified Rankin scale at three months. RESULTS: A total 1070 patients were included. There were no differences between groups with respect to favourable outcome (68.3% vs 63.9), hospital mortality (5.1% vs 6.6%), or 90-day mortality (12.8% vs 13.1%). The percentage of patients who were independent at 90 days was greater in group B (56.3% vs 65.5%, P=.03). In the multivariate analysis adjusted for stroke subtype and fibrinolytic therapy, the association between patient independence and admission period remained present. CONCLUSIONS: The probability of functional independence in our patients increased alongside accumulated experience in our stroke unit with no differences in mortality.

Clinical and neuroradiological signs in adults with type 1 neurofibromatosis.

INTRODUCTION: Type 1 neurofibromatosis is the most common neurocutaneous syndrome. Most published case series study the paediatric population. MATERIAL AND METHODS: Cross-sectional study of cases of type 1 neurofibromatosis from neurology departments that were recorded in a database. We analysed the different clinical variables providing the diagnosis as well as demographic and neuroradiological variables. RESULTS: We found a total of 31 patients with type 1 neurofibromatosis. The mean age was 28.9 years and 58.4% were women. Subjects with unidentified bright objects (UBOs) were younger than those without them (22.45±8.22 years vs. 32.5±10.64; P=.011). In contrast, subjects with neurofibromas were older than those without them (30.56±10.68 years vs. 18.25±4.34; P=.032). No sex differences were found in the presentation of clinical or radiological variables. Seven patients (22.6%) had tumours; 3 were optic pathway gliomas (1 bilateral), 3 were plexiform neurofibromas, and 1 was a pilocytic astrocytoma in the brainstem. CONCLUSIONS: Patients with type 1 neurofibromatosis presented both peripheral neurofibromas and tumorous lesions of the central nervous system. Subjects with neurofibromas were older than those who did not present them, while subjects with UBOs were younger than those without such lesions.

[A descriptive study of patients seen in a stroke unit in the Community of Extremadura]. / Estudio descriptivo de los pacientes asistidos en una unidad de ictus en la Comunidad de Extremadura.

OBJECTIVES: To describe the activity in the stroke unit (SU) of the Hospital de Caceres as well as the demographic characteristics and cardiovascular risk factors in our patients. To determine the patient's functional status at discharge. MATERIAL AND METHODS: A descriptive study of 432 patients admitted consecutively in the SU of the Hospital de Caceres from October, 2008 to May, 2010 was carried out. The different study variables (demographic, risk factors, dependence) were determined and analyzed. RESULTS: The patient prototype was a 71-year old-man from the rural environment, with hypertension, hyperlipidemia, diabetes, who had an ischemic stroke. On medical discharge from the stroke unit (SU), the patient had a mild functional dependence, after and average stay of 2.8 days in the SU. CONCLUSIONS: All patients who suffers a stroke should be attended by and benefit from the care provided in a SU. These units are organizational models that improve patient care in the acute phase, this resulting in lower mortality and disability in these patients.

[Validation of supra-aortic trunks ultrasound in the diagnosis of atherosclerotic disease of the internal carotid artery. Comparison of the results with angiography]. / Validación del estudio ultrasonológico de troncos supraaórticos en el diagnóstico de la enfermedad aterosclerótica de la arteria carótida interna. Comparación de los resultados con los de angiografía.

INTRODUCTION: Arteriosclerosis of the extra-cranial arteries is believed to be responsible for almost one-third of all ischaemic strokes. The sound diagnosis of the degree of stenosis is essential in deciding the best therapeutic strategy. Although cerebral angiography is considered the reference technique, ultrasound study (UST) is a more readily available, non-invasive and well-established procedure for quantifying carotid stenosis. However, on being a dependent exploratory technique, it is recommended that each laboratory validates its results against angiography. OBJECTIVES: To establish the validity of the neuro-ultrasound study in our laboratory for use in the diagnosis of extracranial atheromatous disease, and determine its capacity to quantify the degree of stenosis in the internal carotid artery. MATERIAL AND METHODS: A retrospective study of patients with extracranial carotid atheromatous disease, in whom the diagnostic process was carried out with carotid ultrasound as well as supra-aortic trunk digital-subtraction angiography. RESULTS: A total of 254 carotids were evaluated and the degree of stenosis being classified into > 50%, 70-99% and 100%. The UST for the first group had a sensitivity (Se) of 97%, a specificity (Sp) of 90%, a positive predictive value (PPV) of 94.6% and a negative predictive value (NPV) of 94.2%. The second group had an Se of 96.4%, Sp 93%; PPV 94.4% and NPV 95.4%. The respective values for carotid occlusion were, 85%, 96.8%, 80% and 97.8%. CONCLUSIONS: Our data validates the ability of UST performed in our Laboratory to diagnose the degree of carotid stenosis.

[Pseudo-emesis gravidarum caused by complicated cerebral venous angioma]. / Seudoemesis gravídica causada por angioma venoso cerebral complicado.

INTRODUCTION: Emesis gravidarum is a common pathology rarely requiring hospitalization to control hydroelectrolytic and metabolic alterations. Although it is typical in the first quarter of pregnancy, it can appear in any moment of the gestation. On the other hand, venous angioma (VA) is the most frequent cerebral vascular malformation. In fact, it is a variant of the normal venous drainage of the brain and it is usually an incidental finding. VA is rarely symptomatic, unless associated with cavernous angiomas. Although uncommon, the clinical complications are very varied, bleeding being the most severe one. CASE REPORT: We describe a 27 weeks pregnant healthy woman, with repetitive vomiting that was classified like emesis gravidarum. The study was enlarged due to the reappearance of vomiting, accompanied by migraine, bradypsychia and confusional state. Neuroradiological studies showed a choroid plexus haematoma from left lateral ventricle to third ventricle, secondary to the existence of a left parietal VA, without demonstration of associated cavernous angioma. CONCLUSIONS: Although it is rare, a supratentorial VA, without associated cavernous angioma, may lead to intraventricular hemorrhage. Gestation is the only risk factor associated to VA. By itself, it supposes a tendency to develop ischemic and hemorrhagic, arterial and venous vascular complications.

[Internal carotid artery vasculitis originated by cervicofacial actinomycosis as a predisponing factor to stroke]. / Vasculitis de la arteria carótida interna originada por actinomicosis cervicofacial como factor predisponente de infarto cerebral.

Actinomycosis is a chronic, suppurative, fibrotic infection produced by a gram-positive anaerobic bacteria of the normal mouth flora, the infection having tendency to fistulate and to extend without respecting tissue layers. Initial diagnosis is usually delayed due to its painless evolution. Three clinical forms are known: cervicofacial, abdominal and thoracic. Occasionally, there is vascular involvement which is mainly associated with venous thrombotic phenomena with low clinical expresion and hematogenous dissemination that can result in a formation of abscess or meningitis in the central nervous system. We report the case of a 28 year old female patient with type I diabetes and microangiopathyc complication with a internal carotid artery stenosis adjacent to mandibular angle actinomicosis. A few months later and after a miscarriage she suffered from ischemic stroke. The anticardiolipin antibody were positive at the time of stroke with post-operative period and over the next two years. To our knowledge (Medline, 1984-2004), it is the first report of internal carotid vasculitis originated by cervicofacial actinomicosis. We discuss the neuroradiological aspects of our case.

[Spider's bite that develop eyelid necrosis]. / Lesión necrótica palpebral por picadura de araña.

CASE REPORT: We report the case of a spider bite in a 7 years-old girl that develop a dermonecrosis and did not need surgical treatment. DISCUSSION: We analize the mechanisms of these kind of lesions review and update therapeutic management of these kind of lesions.

Lesión necrótica palpebral por picadura de araña / Spider´s bite that develop eyelid necrosis

Caso clínico: Se presenta el caso de un paciente de 7 años de edad que sufrió una picadura de araña común, desarrollando posteriormente una necrosis cutánea que no requirió tratamiento quirúrgico.Discusión: Se analizan los mecanismos implicados en este tipo de lesiones y realizamos una revisión y actualización del manejo terapéutico de las mismas

Case report: We report the case of a spider bite in a 7 years-old girl that develop a dermonecrosis and did not need surgical treatment.Discusión: We analize the mechanisms of these kind of lesions review and update therapeutic management of these kind of lesions