Contenido en filtros tras angioplastia y colocación de stent carotídeo: relación con lesiones isquémicas en la resonancia magnética de difusión / Filter content after carotid angioplasty and stenting: relation to ischemic lesions in diffusion-weighted imaging

Objetivos. Evaluar la relación entre el material recogido en filtros distales tras angioplastia y colocación de stent carotídeo (ASC) y la aparición de lesiones isquémicas cerebrales en la RM potenciada en difusión (RMD). Determinar la influencia que tienen variables demográficas, clínicas y del procedimiento en el proceso embolígeno y en la isquemia post-ASC. Material y método. Se analizó histológicamente el contenido de los filtros de 76 pacientes sometidos a ASC por estenosis grave de la arteria carótida interna (ACI) (60 hombres; edad media 68,39 años; rango: 46-82), valorándose el volumen (< 1 λ=0,001 ml=1μl; 1-10 λ; y > 10 λ) y la composición de las partículas. Se realizó RMD previa y 24h después del procedimiento, recogiéndose la aparición de lesiones, número, tamaño y distribución. Se correlacionaron estadísticamente los datos anteriores y con variables demográficas, clínicas y del procedimiento. Resultados. Cincuenta y ocho pacientes (76,3%) presentaron sintomatología previa al procedimiento. El 64,5% de los filtros (49) presentó partículas, la mayoría menores de 1 λ (77,5%), predominando los agregados fibrinoplaquetarios, restos celulares y cristales de colesterol. Doce pacientes (15,8%) demostraron lesiones en la RMD post-ASC, sin relación con el contenido en los filtros. No se encontró correlación estadística entre la presencia de material en los filtros y otras variables. Conclusiones. La isquemia post-ASC no depende únicamente de la carga embolígena y su naturaleza. La menor prevalencia de lesiones post-ASC en nuestra serie en comparación con otras indica que la adecuada selección de pacientes y la experiencia minimizan la influencia negativa de algunas variables, como la edad, en su aparición (AU)

Objectives. To evaluate the relation between the material retrieved from distal filters after carotid angioplasty and stenting and the development of ischemic brain lesions in diffusion-weighted imaging (DWI). To determine the influence of demographic, clinical, and procedural variables in the pathogenesis of emboli and in ischemia after carotid angioplasty and stenting. Material and methods. We submitted the contents of the filters of 76 patients (60 men; mean age, 68.39years; range, 46-82) who had undergone angioplasty and stenting for severe stenosis of the internal carotid artery for histologic analysis evaluating volume (< 1 λ=0.001ml = 1μl; 1-10 λ; and > 10 λ) and the composition of the particles. All patients underwent DWI before and 24hours after the procedure; we recorded whether lesions appeared and their number, size, and distribution. We correlated the findings with demographic, clinical, and procedural variables. Results. Symptoms were present before the procedure in 58 (76.3%) patients. Particles were present in 49 (64.5%) of the filters; most particles (77.5%) were 1 λ with a predominance of fibrin-platelet aggregates, cell remnants, and cholesterol crystals. DWI after the procedure detected lesions in 12 (15.8%) patients. We found no statistically significant correlation between filter contents and lesion detection after the procedure or between filter contents and other variables. Conclusions. Ischemia after carotid angioplasty and stenting does not depend solely on the embolic load and its nature. We consider that the lower prevalence of postprocedural lesions in our series compared to others suggests that appropriate patient selection and experience minimize the negative influence of some variables like age in their development(AU)

[Filter content after carotid angioplasty and stenting: relation to ischemic lesions in diffusion-weighted imaging]. / Contenido en filtros tras angioplastia y colocación de stent carotídeo: relación con lesiones isquémicas en la resonancia magnética de difusión.

OBJECTIVES: To evaluate the relation between the material retrieved from distal filters after carotid angioplasty and stenting and the development of ischemic brain lesions in diffusion-weighted imaging (DWI). To determine the influence of demographic, clinical, and procedural variables in the pathogenesis of emboli and in ischemia after carotid angioplasty and stenting. MATERIAL AND METHODS: We submitted the contents of the filters of 76 patients (60 men; mean age, 68.39 years; range, 46-82) who had undergone angioplasty and stenting for severe stenosis of the internal carotid artery for histologic analysis evaluating volume (< 1 λ = 0.001 ml = 1 µl; 1-10 λ; and > 10 λ) and the composition of the particles. All patients underwent DWI before and 24 hours after the procedure; we recorded whether lesions appeared and their number, size, and distribution. We correlated the findings with demographic, clinical, and procedural variables. RESULTS: Symptoms were present before the procedure in 58 (76.3%) patients. Particles were present in 49 (64.5%) of the filters; most particles (77.5%) were 1 λ with a predominance of fibrin-platelet aggregates, cell remnants, and cholesterol crystals. DWI after the procedure detected lesions in 12 (15.8%) patients. We found no statistically significant correlation between filter contents and lesion detection after the procedure or between filter contents and other variables. CONCLUSIONS: Ischemia after carotid angioplasty and stenting does not depend solely on the embolic load and its nature. We consider that the lower prevalence of postprocedural lesions in our series compared to others suggests that appropriate patient selection and experience minimize the negative influence of some variables like age in their development.

Recursos asistenciales en ictus en España 2010: análisis de una encuesta nacional del Grupo de Estudio de Enfermedades Cerebrovasculares / Health care resources for stroke patients in Spain, 2010: analysis of a national survey by the Cerebrovascular Diseases Study Group

Introduction: Stroke is currently a major social health problem. For this reason, the Spanish Ministry of Health approved the Stroke National Strategy (SNS) in 2008 to improve the prevention, treatment and rehabilitation of stroke patients. This plan intends to guarantee 24-hour, 365-days neurological assistance in the whole country by the end of 2010. Our aim was to analyse the situation of stroke assistance in Spain in 2009. Material and methods: A committee of neurologists practicing in the different autonomous communities (AC), and who had not participated in the preparation of the SNS, was created. A national survey was performed including the number of stroke units (SU) and their characteristics (monitoring, 24-h/7-day on-call neurology service, nursing staff ratio and the use of protocols), bed ratio of SU/100,000 people, availability of intravenous thrombolysis therapy, neurovascular intervention (NI) and telemedicine. Results: We included data from 145 hospitals. There are 39 SU in Spain, unevenly distributed. The ratio between SU bed/number of people/AC varied from 1/75,000 to 1/1,037,000 inhabitants; Navarra and Cantabria met the goal. Intravenous thrombolysis therapy is used in 80 hospitals; the number of treatments per AC was between 7 and 536 in 2008. NI was performed in the 63% of the AC, with a total of 28 qualified hospitals (although only 1 hospital performed it 24h, 7days a week in 2009). There were 3 hospitals offering clinical telemedicine services. Conclusions: Assistance for stroke patients has improved in Spain compared to previous years, but there are still some important differences between the AC that must be eliminated to achieve the objectives of the SNS (AU)

Introducción: El ictus constituye un importante problema sociosanitario. Por ese motivo, el Ministerio de Sanidad aprobó en 2008 la Estrategia Nacional en Ictus (ENI) con el objetivo de mejorar la prevención, tratamiento y rehabilitación del paciente con ictus. Se pretende garantizar una atención neurológica en todo el país y a cualquier hora del día para final del 2010. Nuestro objetivo fue analizar la situación de la atención al ictus en España en el año 2009. Material y métodos: Se constituyó un comité de neurólogos de las diferentes CC. AA. que no hubieran participado en la ENI. Se elaboró una encuesta nacional que recogió el número de unidades de ictus (UI) y la dotación (monitorización, guardia de neurología 24h/7 días, ratio de enfermería y existencia de protocolos), ratio cama UI/100.000 habitantes, presencia de trombólisis iv, intervencionismo neurovascular (INV) y telemedicina. Resultados: Se incluyeron datos de 145 hospitales. Existen 39 UI distribuidas de un modo desigual. La relación cama de UI/número de habitantes/comunidad autónoma osciló entre 1/75.000 a 1/1.037.000 habitantes, cumpliendo el objetivo Navarra y Cantabria. Se realiza trombólisis iv en 80 hospitales, el número osciló entre 7-536 tratamientos/CC. AA. durante el año 2008. Se realiza INV en el 63% de las CC. AA., teniendo 28 centros capacitados, aunque sólo 1 la realizaba en 2009 las 24h/7 día. Existen 3 centros con telemedicina. Conclusiones: La asistencia al ictus ha mejorado en España respecto a unos años atrás, pero todavía existen importantes desigualdades por CC. AA. que deberían superarse si se quiere cumplir el objetivo de la ENI (AU)

Health care resources for stroke patients in Spain, 2010: analysis of a national survey by the Cerebrovascular Diseases Study Group.

INTRODUCTION: Stroke is currently a major social health problem. For this reason, the Spanish Ministry of Health approved the Stroke National Strategy (SNS) in 2008 to improve the prevention, treatment and rehabilitation of stroke patients. This plan intends to guarantee 24-hour, 365-days neurological assistance in the whole country by the end of 2010. Our aim was to analyse the situation of stroke assistance in Spain in 2009. MATERIAL AND METHODS: A committee of neurologists practicing in the different autonomous communities (AC), and who had not participated in the preparation of the SNS, was created. A national survey was performed including the number of stroke units (SU) and their characteristics (monitoring, 24-h/7-day on-call neurology service, nursing staff ratio and the use of protocols), bed ratio of SU/100,000 people, availability of intravenous thrombolysis therapy, neurovascular intervention (NI) and telemedicine. RESULTS: We included data from 145 hospitals. There are 39 SU in Spain, unevenly distributed. The ratio between SU bed/number of people/AC varied from 1/75,000 to 1/1,037,000 inhabitants; Navarra and Cantabria met the goal. Intravenous thrombolysis therapy is used in 80 hospitals; the number of treatments per AC was between 7 and 536 in 2008. NI was performed in the 63% of the AC, with a total of 28 qualified hospitals (although only 1 hospital performed it 24h, 7 days a week in 2009). There were 3 hospitals offering clinical telemedicine services. CONCLUSIONS: Assistance for stroke patients has improved in Spain compared to previous years, but there are still some important differences between the AC that must be eliminated to achieve the objectives of the SNS.

Internal carotid artery stenting in patients with near occlusion: 30-day and long-term outcome.

BACKGROUND AND PURPOSE: The natural history of the carotid NO is poorly characterized, and the management of patients remains controversial. We report the results and complications associated with CAS and follow-up. MATERIALS AND METHODS: Between March 2000 and March 2009, 116 of 836 CAS procedures were performed in patients with carotid NO (13.9%). A total of 99 men (85.3%) and 17 women (14.7%) with a mean age of 65.8 years were included. Presenting symptoms were TIA in 44 patients (37.9%) and minor stroke or noninvalidating stroke in 61 (52.6%). One hundred five patients (90.5%) were symptomatic. RESULTS: A distal filter was used for cerebral protection in 92 patients (79.3%). Transient hemodynamic alterations were frequent during balloon inflation: hypotension (37.1%), bradycardia (48.3%), and asystole in 24.1%. Four patients (3.4%) developed a TIA after CAS. Stroke in progression was arrested in the 1 patient (0.9%). The median follow-up period for patients was 36 months. Asymptomatic restenosis >70% occurred in 5 patients (4.3%); asymptomatic occlusion occurred in 3 patients (2.6%). During follow-up, 3 patients (2.6%) experienced a stroke, 1 ipsilateral (at 19 months) and 2 contralateral (at 6 and 30 months, respectively). Thirteen patients (11.2%) died, 7 from vascular causes. CONCLUSIONS: Our study showed that carotid NO is an under-recognized condition, and CAS would seem to be beneficial when performed by an experienced neurointerventional team.

Volume and composition of emboli in neuroprotected stenting of the carotid artery.

BACKGROUND AND PURPOSE: Periprocedural microembolization is a major and permanent risk for patients treated by angioplasty and stent placement of high-grade carotid stenoses. Little is known however about the characteristics and significance of these embolized particles. Our aim was to assess the volume and composition of debris captured by filters during carotid angioplasty and stent placement (CAS) of severe internal carotid artery (ICA) stenoses. MATERIALS AND METHODS: Institutional review board approval and informed consent from all subjects were obtained. Two hundred one patients (mean age, 66.2 years; range, 35-82 years) with > or = 70% stenosis of the ICA underwent filter-protected CAS. Ultrastructural and semiquantitative analysis of the volume of filters was obtained. Multifactorial statistical analysis was performed to determine factors related to debris volume and composition. RESULTS: Transient ischemic attack occurred in 6 patients (3%), and a major stroke, in 1 (0.5%). Debris was found in 117 filters (58.2%), with volume <1 lambda (0.001 mL) in 71%. The number of balloon dilations, age older than 65 years, and calcified plaques in pre-CAS angiography were significantly associated with the presence of particulates inside the filters (P < .03, P < .004, and P < .05, respectively). CONCLUSIONS: Vessel wall and atheromatous plaques are the main source of microemboli during CAS. Embolization is mainly related to the number of balloon dilations during CAS. Planning a proper and individualized strategy for the procedure in each patient is essential to minimize the potential effects of manipulation during CAS.

[Outcome of intraarterial procedures in acute ischemic stroke]. / Resultados del intervencionismo en el ictus isquémico agudo.

INTRODUCTION: In addition to the thrombolytic agents, mechanical devices are being used in intraarterial procedures in acute stroke patients. The intervention protocol and outcomes of intraarterial procedures performed in the Hospital Virgen del Rocío in 2003-2004 are described. METHODS: The results in each arterial occlusion site and case-control study of the middle cerebral artery (MCA), the placebo group in PROACT II study (Prolyse in Acute Cerebral Thromboembolism II) as historic control group, are described. RESULTS: A total of 32 procedures were performed: 18 MCA occlusions, 8 basilar thrombosis and 6 intracranial carotid occlusions. Urokinase, abciximab and mechanical devices were used in 60%, 26% and 60% of the cases, respectively. MCA occlusions: 60% of the cases improved in 24 hours (25% remained asymptomatic). Only 25% controls remained independent versus 55% of the treated patients (p=0.001). Recanalization and complete recanalization rates were 95 % and 45 %, respectively (18% and 2% in the control group). Symptomatic intracranial hemorrhage (SICH) rate was 18% vs 4% in cases and controls. Basilar thrombosis: only one patient died and 57% of the remaining patients were independent. Carotid occlusions: no complete recanalization was achieved and only one patient was independent. Evolution time in SICH patients was longer (p=0.04), with increased international normalized ratio (INR) for thromboplastin time (p=0.06) and old ischemic lesions in brain CT scan (p=0.02) and they were more dependent at three months (p=0.01). CONCLUSIONS: Intraarterial procedures in MCA occlusions achieve high rates of recanalization and better clinical outcomes than those described in isolated intraarterial thrombolysis. Long-term outcomes in basilar thrombosis were also excellent. Nevertheless, the natural evolution of carotid occlusions was not modified.

[Financial analysis of intraarterial procedures in acute stroke]. / Análisis económico del intervencionismo en el ictus agudo.

INTRODUCTION: Since the most decisive factor related to the cost of stroke is disability, any acute phase intervention to reduce disability will probably be cost-effective. The present acute stroke phase analysis is the first cost-benefit study on intraarterial procedures in acute stroke phase. METHOD: Case-control study focusing on the cost of stroke including acute stroke patients subjected to interventionism in Hospital Virgen del Rocío in 2003-2004 was conducted. The data obtained was subsequently extrapolated to the number of patients who would have been treated if intraarterial procedures could be performed on a 24 hour-day basis. RESULTS: 32 patients were treated in 2003-2004. Direct cost (devices and human resources) of each treated patient was 10,502 euros and global saving in hospital stay and rehabilitation was 11,069 euros, resulting in 567 euros net saving per patient. Nevertheless, 92 patients would have been treated if intraarterial procedures could have been performed on a 24 hour-day basis, resulting in better financial results with 5,792 saving for each treated patient. CONCLUSIONS: Intracraneal procedures in acute stroke has been shown to be cost-effective since cost of material and human resources is greatly exceeded by the saving in hospitalization and rehabilitation as a result of reduction in patient disability.

Análisis económico del intervencionismo en el ictus agudo / Financial analysis of intraarterial procedures in acute stroke

Introducción. El determinante más importante del coste del ictus es el estado de discapacidad, por lo que cualquier intervención en fase aguda que reduzca la discapacidad será probablemente coste-efectiva. El presente análisis es el primer estudio de coste-beneficio del intervencionismo en fase aguda del ictus. Métodos. Se ha realizado un estudio de casos y controles de costes de los pacientes con ictus agudo tratados mediante intervencionismo en el Hospital Virgen del Rocío en los años 2003-2004 y posteriormente se han extrapolado los datos obtenidos al supuesto del número real de pacientes que habrían sido tratados si hubiera estado organizado el intervencionismo como atención continua. Resultados. En los años 2003-2004 se han tratado a 32 pacientes. El coste directo (material fungible + recursos humanos) por cada paciente tratado fue de 10.502 euros y el ahorro global en estancia hospitalaria más rehabilitación resultó de 11.069 euros por paciente, resultando, por tanto, en un ahorro neto de 567 euros por paciente. Sin embargo, si el intervencionismo hubiese estado organizado de forma continua se habrían tratado a 92 pacientes, resultando la evaluación económica más favorable con un ahorro de 5.792 euros por cada paciente tratado. Conclusiones. El tratamiento intervencionista ha demostrado ser coste-efectivo, ya que el gasto derivado del material y los recursos humanos necesarios es superado con creces por el ahorro en tiempos de hospitalización y rehabilitación que se deriva de la reducción de la discapacidad de los pacientes

Introduction. Since the most decisive factor related to the cost of stroke is disability, any acute phase intervention to reduce disability will probably be cost-effective. The present acute stroke phase analysis is the first cost-benefit study on intraarterial procedures in acute stroke phase. Method. Case-control study focusing on the cost of stroke including acute stroke patients subjected to interventionism in Hospital Virgen del Rocío in 2003-2004 was conducted. The data obtained was subsequently extrapolated to the number of patients who would have been treated if intraarterial procedures could be performed on a 24 hour-day basis. Results. 32 patients were treated in 2003-2004. Direct cost (devices and human resources) of each treated patient was 10,502 euros and global saving in hospital stay and rehabilitation was 11,069 euros, resulting in 567 euros net saving per patient. Nevertheless, 92 patients would have been treated if intraarterial procedures could have been performed on a 24 hour-day basis, resulting in better financial results with 5,792 saving for each treated patient. Conclusions. Intracraneal procedures in acute stroke has been shown to be cost-effective since cost of material and human resources is greatly exceeded by the saving in hospitalization and rehabilitation as a result of reduction in patient disability

Resultados del intervencionismo en el ictus isquémico agudo / Outcome of intraarterial procedures in acute ischemic stroke

Introducción. Además de los agentes trombolíticos, se están empleando dispositivos mecánicos en el intervencionismo en pacientes con ictus agudo. Se describe el protocolo y resultados del intervencionismo en el Hospital Virgen del Rocío durante los años 2003-2004. Métodos. Descripción de resultados en cada tipo de oclusión y estudio caso-control de oclusiones de arteria cerebral media (ACM) tratadas empleando como control histórico el grupo placebo del estudio PROACT II (Prolyse in Acute Cerebral Thromboembolism II). Resultados. Se realizaron 32 procedimientos: 18 oclusiones ACM, 8 trombosis basilares y 6 carótidas intracraneales. Se empleó urocinasa, abciximab y disrupción mecánica en un 60, 26 y 60% de pacientes, respectivamente. Oclusiones ACM: el 60% mejoraron en 24 h (25% quedaron asintomáticos). Sólo el 25% de controles quedaron independientes frente a un 55 % de los tratados (p=0,001). La tasa de recanalización y recanalización completa fue del 95 y 45%, respectivamente (18 y 2% en el grupo control). La tasa de hemorragia intracraneal sintomática (HICS) fue del 18% en el grupo tratado y del 4% en el control. Trombosis basilares: un paciente falleció y el 57% de los restantes alcanzó la independencia. Oclusiones carotídeas: en ningún caso se consiguió la recanalización completa y sólo alcanzó la independencia un paciente. Los pacientes con HICS tenían un tiempo de evolución más prolongado (p=0,04), un international normalized ratio (INR) mayor para el tiempo de tromboplastina (p=0,06) e infartos antiguos en la tomografía computarizada cerebral (p=0,02) y quedaban más dependientes al tercer mes (p=0,01). Conclusiones. El intervencionismo en oclusiones de ACM consigue altas tasas de recanalización y mejores resultados clínicos que los descritos para la fibrinólisis intraarterial aislada. Los resultados a largo plazo en las trombosis basilares fueron también excelentes. Sin embargo, no se modificó la evolución natural de las oclusiones carotídeas

Introduction. In addition to the thrombolytic agents, mechanical devices are being used in intraarterial procedures in acute stroke patients. The intervention protocol and outcomes of intraarterial procedures performed in the Hospital Virgen del Rocío in 2003-2004 are described. Methods. The results in each arterial occlusion site and case-control study of the middle cerebral artery (MCA), the placebo group in PROACT II study (Prolyse in Acute Cerebral Thromboembolism II) as historic control group, are described. Results. A total of 32 procedures were performed: 18 MCA occlusions, 8 basilar thrombosis and 6 intracranial carotid occlusions. Urokinase, abciximab and mechanical devices were used in 60%, 26% and 60% of the cases, respectively. MCA occlusions: 60% of the cases improved in 24 hours (25% remained asymptomatic). Only 25% controls remained independent versus 55% of the treated patients (p=0.001). Recanalization and complete recanalization rates were 95 % and 45 %, respectively (18% and 2% in the control group). Symptomatic intracranial hemorrhage (SICH) rate was 18% vs 4% in cases and controls. Basilar thrombosis: only one patient died and 57% of the remaining patients were independent. Carotid occlusions: no complete recanalization was achieved and only one patient was independent. Evolution time in SICH patients was longer (p=0.04), with increased international normalized ratio (INR) for thromboplastin time (p=0.06) and old ischemic lesions in brain CT scan (p=0.02) and they were more dependent at three months (p=0.01). Conclusions. Intraarterial procedures in MCA occlusions achieve high rates of recanalization and better clinical outcomes than those described in isolated intraarterial thrombolysis. Long-term outcomes in basilar thrombosis were also excellent. Nevertheless, the natural evolution of carotid occlusions was not modified

Cerebral hemodynamic changes after carotid angioplasty and stenting.

BACKGROUND AND PURPOSE: Carotid angioplasty stent placement (CAS) is an accepted alternative to endarterectomy. However, little is known about its effect on cerebral hemodynamics. We prospectively studied the early and delayed hemodynamic changes after CAS. MATERIALS AND METHODS: Sixty patients underwent CAS for >or=70% internal carotid artery stenosis. Transcranial Doppler (TCD) was done before, 6 hours, and 30 days after CAS. Cerebrovascular reserve to apnea (CVR) was measured. RESULTS: On the ipsilateral side, basal middle cerebral artery (MCA) middle flow velocity (MFV) and pulsatility index (PI) increased from 49.7 cm/s and 0.85, respectively, to 62.5 cm/s and 1.09 immediately after CAS (P < .05); anterior cerebral artery (ACA) MFV and PI increased from 50.7 cm/s and 0.90, to 58.9 cm/s and 1.08 (P < .05); and posterior cerebral artery (PCA) MFV decreased from 47.5 to 36.5 cm/s, with no change in PI (P < .05). On the contralateral side, nonsignificant changes were seen on MCA, immediately after CAS; ACA and PCA MFV decreased from 63.7 and 45.3 cm/s to 50.3 and 38.6 cm/s, respectively (P < .05); ACA and PCA PI increased from 0.96 and 1.00, respectively, to 1.04 and 1.04 (P < .05). At 30 days, ipsilateral MCA MFV and PI were 52.8 cm/s and 1.12, respectively (P < .05), and contralateral values were 49.6 cm/s (P < .05) and 1.02 (nonsignificant), respectively. Basal ipsilateral and contralateral CVR improved from 26.0% to 37.0% (P < .05), and from 30.1% to 33.5% (nonsignificant), respectively, at 30 days. CONCLUSIONS: CAS produces an early significant increase of MFV and PI in the ipsilateral anterior circulation. This effect is maintained, though minor, 30 days later. In addition, CAS results in an improvement of CVR at 30 days.

Plan de atención sanitaria al ictus / Plan for stroke healthcare delivery

Introducción. Todos los pacientes con ictus han de tener el mismo grado de acceso a una atención especializada acorde con el momento evolutivo de su enfermedad, con independencia de donde vivan, de su edad, sexo o etnia. Objetivo. Elaborar un sistema organizado de atención al paciente con ictus que de respuesta a las necesidades de cada enfermo y optimice la utilización de los recursos sanitarios. Métodos. Un comité de 14 neurólogos especialistas en patología neurovascular y representativos de las diferentes comunidades autónomas evaluaron la evidencia disponible basada en una revisión de la literatura disponible. Resultados. Todos los pacientes con ictus deben ser atendidos durante su fase aguda en hospitales que dispongan de los facultativos (neurólogos) y de los medios diagnósticos y terapéuticos indicados. Los hospitales que atienden ictus en su fase aguda han de estar preparados para asistir a estos pacientes y han de disponer de un circuito de traslados previamente definido y coordinado con el servicio de urgencias extrahospitalarias. Teniendo en cuenta que los recursos son limitados éstos deben estructurarse en distintos niveles asistenciales en función de la población atendida. Esto dará lugar a tres tipos de hospitales en lo que se refiere a la atención al paciente con ictus: hospital de referencia de ictus, hospital con unidad de ictus y hospital con equipo de ictus (AU)

All stroke patients should receive the same degree of specialized healthcare attention according to the stage of their disease, independently of where they live, their age, gender or ethnicity. Objective: To create an organized healthcare system able to offer the needed care for each patient, optimizing the use of the existing resource. Methods: A committee of 14 neurologists specialized in neurovascular diseases representing different regions of Spain evaluated the available scientific evidence according to the published literature. Results: During the acute phase, all stroke patients must be evaluated in hospitals that offer access to specialized physicians (neurologists) and the indicated diagnostic and therapeutic procedures. Hospitals that deliver care to acute stroke patients must be prepared to attend these patients and need to arrange a predefined transferring circuit coordinated with the extrahospitalary emergency service. Since resources are limited, they should be structured into different care levels according to the target population. Thus, three types of hospitals will be defined for stroke care: reference stroke hospital, hospital with stroke unit, hospital with stroke team (AU)

[Plan for stroke healthcare delivery]. / Plan de atención sanitaria al ictus.

INTRODUCTION: All stroke patients should receive the same degree of specialized healthcare attention according to the stage of their disease, independently of where they live, their age, gender or ethnicity. OBJECTIVE: To create an organized healthcare system able to offer the needed care for each patient, optimizing the use of the existing resource. METHODS: A committee of 14 neurologists specialized in neurovascular diseases representing different regions of Spain evaluated the available scientific evidence according to the published literature. RESULTS: During the acute phase, all stroke patients must be evaluated in hospitals that offer access to specialized physicians (neurologists) and the indicated diagnostic and therapeutic procedures. Hospitals that deliver care to acute stroke patients must be prepared to attend these patients and need to arrange a predefined transferring circuit coordinated with the extrahospitalary emergency service. Since resources are limited, they should be structured into different care levels according to the target population. Thus, three types of hospitals will be defined for stroke care: reference stroke hospital, hospital with stroke unit, hospital with stroke team.

Silent ischemia after neuroprotected percutaneous carotid stenting: a diffusion-weighted MRI study.

BACKGROUND AND PURPOSE: To assess by diffusion-weighted MR imaging (DWI) the efficacy of cerebral protection devices in avoiding embolization and new ischemic lesions in patients with severe internal carotid artery (ICA) stenosis undergoing carotid artery stent placement (CAS). METHODS: One hundred sixty-two CASs in the extracranial ICA were performed with the use of distal filters. Mean age of the patients was 68.5 years (range, 33-86) and 122 patients (75.3%) were symptomatic. MR imaging was performed in all patients during the 3-day period before CAS, and DWI was obtained within 24 hours after the procedure. Ninety-five patients (58.6%) were monitored by transcranial Doppler ultrasonography for microemboli detection in the territory of the middle cerebral artery (MCA), ipsilateral to the vessel being treated. RESULTS: Twenty-eight patients (17.3%) showed 58 new ischemic foci in DWI, and 13 patients (46.4%) had multiple foci. Location of new lesions was mainly in the vascular territory supplied by the treated vessel (19 patients; 67.9%), but also in the contralateral MCA (1 patient; 3.6%), and the posterior fossa (4 patients; 14.3%). A significant relationship (P < .03) was found between occurrence of transient ischemic attack (TIA) and appearance of new lesions. Microembolic signals (MES) were detected in 88 patients (92.6%), with no relationship between number of MES and the appearance of new ischemic foci. CONCLUSION: New ischemic foci were observed in 17.3% of the patients undergoing neuroprotected CAS. Appearance of new ischemic lesions were only significantly related to the occurrence of TIA but not to the number of MES registered or other variables. Despite the encouraging results, the incidence of new ischemic lesions should promote research for safer techniques and devices.

Necrosis laminar cortical causada por infarto cerebral / Cortical laminar necrosis caused by cerebral infarction

No disponible

No disponible

Predictors of good outcome in medium to large spontaneous supratentorial intracerebral haemorrhages.

OBJECTIVE: To determine potential predictors of good outcome in primary medium to large intracerebral haemorrhages (ICH) which could be useful for selecting patients for surgical procedures. METHODS: Subjects were 138 patients with spontaneous hemispheric ICH >20 ml. They were non-surgically treated and were admitted consecutively to 15 hospitals within the first 12 hours of symptom onset (mean (SD), 5.8 (3.1) hours). Haematoma volume was measured on computed tomography (CT) at admission. Stroke severity was assessed by the Canadian stroke scale (CSS). Good outcome was defined as modified Rankin score < or =2 at three months. RESULTS: At the end of the follow up period, 45 patients (32.6%) had good outcome. Baseline stroke severity, systolic and diastolic blood pressure, body temperature, and acute phase reaction biochemical markers (ESR, C-reactive protein, fibrinogen, neutrophil count) were significantly associated with good outcome in bivariate analyses. Of the initial CT scan variables, intraventricular contamination, deep location, mass effect, and greater ICH volume were related to poor outcome. On multiple logistic regression analysis, cortical location of bleeding (odds ratio 3.79 (95% confidence interval 1.2 to 12.01); p = 0.023), high CSS score (OR 2.3 (1.6 to 3.1); p<0.0001), and low fibrinogen concentrations (OR 0.92 (0.87 to 0.97); p = 0.001) were independent predictors of good outcome. These three factors correctly classified 85% of patients. CONCLUSIONS: Good outcome in medium to large ICH can be predicted on admission by three readily assessable factors (CSS score, ICH location, and fibrinogen levels). These predictors may be helpful in selecting patients for surgical treatment.

[Compression of the internal carotid artery due to elongated styloid process]. / Compresión de la arteria carótida interna por una apófisis estiloides alargada.

INTRODUCTION: Elongation of the styloid process has been reported as a source of pain in the head and neck region. However, transient ischemic attack (TIA) due to mechanical compression of the internal carotid artery (ICA) by an elongated styloid process has never been mentioned in the literature. CASE REPORT: Male aged 36 years, with a ten-year history of dull intermittent pain in the left side of the neck that worsened on turning the head, suffered a TIA in the silvian territory, ten days after a minor neck trauma. The eco-Doppler exploration demonstrated a compression of the ICA after rotation of the head. The arteriography revealed an stenosis of the cervical ICA by an external compression. The length of the elongated process in the orthopantomogram and the computed tomography was 35 mm. Angiotomography showed a closed relationship between the tip of the left elongated process and the stenosis of the ICA. Surgical styloidectomy was performed via an extraoral approach under general anaesthesia. The excised specimen measured 30 mm long. All symptoms were relieved with no recurrence during a three-year follow up period. CONCLUSION: TIA should be taken into account in the clinical feature associated to an elongated styloid process. Angiotomography is very reliable to define the anatomic relationship between the styloid process and the ICA. The treatment of choice is surgical shortening trough an external approach which provides an adequate control of the carotid artery.