Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 41
Filtrar
1.
Med Intensiva (Engl Ed) ; 48(3): 165-173, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38431382

RESUMO

Transcranial ultrasonography is a non-invasive, bedside technique that has become a widely implemented tool in the evaluation and management of neurocritically ill patients. It constitutes a technique in continuous growth whose fundamentals (and limitations) must be known by the intensivist. This review provides a practical approach for the intensivist, including the different sonographic windows and planes of insonation and its role in different conditions of the neurocritical patients and in critical care patients of other etiologies.


Assuntos
Ultrassonografia Doppler em Cores , Ultrassonografia Doppler Transcraniana , Humanos , Ultrassonografia Doppler Transcraniana/métodos , Ultrassonografia Doppler em Cores/métodos , Ultrassonografia , Cuidados Críticos
2.
Med. intensiva (Madr., Ed. impr.) ; 48(3): 165-173, Mar. 2024. graf, ilus
Artigo em Espanhol | IBECS | ID: ibc-231022

RESUMO

La ultrasonografía transcraneal es una técnica no invasiva y disponible a pie de cama que se ha convertido en una herramienta accesible y consolidada en la evaluación y el manejo clínico de los pacientes neurocríticos. Se trata de una técnica en continuo crecimiento cuyos fundamentos (y sus limitaciones) deben ser conocidos por el intensivista. Esta revisión aporta un enfoque práctico para el intensivista, incluyendo las diferentes ventanas y planos de insonación y su papel en la patología específica propia de los pacientes neurocríticos y en los pacientes críticos de otras etiologías. (AU)


Transcranial ultrasonography is a non-invasive, bedside technique that has become a widely implemented tool in the evaluation and management of neurocritically ill patients. It constitutes a technique in continuous growth whose fundamentals (and limitations) must be known by the intensivist. This review provides a practical approach for the intensivist, including the different sonographic windows and planes of insonation and its role in different conditions of the neurocritical patients and in critical care patients of other etiologies. (AU)


Assuntos
Humanos , Ultrassonografia Doppler Transcraniana/história , Ultrassonografia Doppler Transcraniana/tendências , Unidades de Terapia Intensiva , Estado Terminal , Ultrassonografia , Ultrassonografia Doppler Dupla , Monitorização Neurofisiológica
3.
Nutr. hosp ; 40(5): 993-999, SEPTIEMBRE-OCTUBRE, 2023. tab
Artigo em Inglês | IBECS | ID: ibc-226300

RESUMO

Aim: to investigate the effects of low sodium formula salt combined with the Chinese Modified Dietary Approaches to Stop Hypertension (DASH) diet on cerebrovascular function in patients with hypertension and type 2 diabetes. Methods: an eight-week single-arm trial was conducted in 66 patients with hypertension and type 2 diabetes to investigate effects of low sodium formula salt (potassium chloride 56 %, sodium chloride 23 %, 5 g/day) combined with Chinese Modified DASH diet on cerebrovascular function (measured by transcranial Doppler sonography), indicators of chronic diseases (blood pressure, blood glucose and blood lipids) and urinary excretion. The above indicators were performed before and after intervention. Results: fifty-nine subjects completed the study. Peak systolic velocity, mean flow velocity, end-diastolic velocity, pulsatility index and resistance index of internal cerebral artery and vertebral artery decreased significantly (p < 0.05); pulsatility index and resistance index of anterior cerebral artery and middle cerebral artery decreased significantly (p < 0.05); and end-diastolic velocity and pulsatility index of basilar artery decreasedsignificantly (p < 0.05). Systolic blood pressure, diastolic blood pressure, fasting blood glucose and postprandial blood glucose decreased significantly (p < 0.001; p < 0.001; p < 0.001; p < 0.001). Blood pressure and blood glucose control rates increased significantly (p < 0.001). Conclusions: based on the study, 23 % low-sodium formula combined with CM-DASH diet pattern can improve cerebrovascular function in community patients with hypertension complicated with diabetes and has a good short-term benefit of blood pressure and glucose control. (AU)


Objetivo: investigar los efectos de una sal baja en sodio combinada con la versión china de la dieta DASH (del inglés Dietary Approaches to StopHypertension) modificada en la función cerebrovascular en pacientes con hipertensión y diabetes tipo 2. Métodos: en 66 pacientes con hipertensión y diabetes tipo 2 se llevó a cabo un ensayo de ocho semanas para investigar los efectos de la sal baja en sodio (cloruro de potasio 56 %, cloruro de sodio 23 %, 5 g/día) combinada con la dieta DASH en su versión china modificada en la función cerebrovascular (medido por sonografía Doppler transcraneal), los indicadores de enfermedades crónicas (presión arterial, glucosa sanguínea y lípidos sanguíneos) y la excreción urinaria. Los indicadores anteriores se midieron antes y después de la intervención. Resultados: cincuenta y nueve sujetos completaron el estudio. La velocidad sistólica máxima, la velocidad media del flujo, la velocidad diastólica final, el índice de pulsatilidad y el índice de resistencia de la arteria cerebral anterior y la arteria vertebral disminuyeron significativamente (p < 0,05); el índice de pulsatilidad y el índice de resistencia de la arteria cerebral anterior y la arteria media disminuyeron significativamente (p < 0,05); y la velocidad diastólica final y el índice de pulsatilidad de la arteria basilar disminuyeron significativamente (p < 0,05). La presión arterial sistémica, la presión arterial diastólica, la glucosa arterial en ayuno y la glucemia posprandial disminuyeron significativamente (p < 0,001, p < 0,001, p < 0,001, p < 0,001). La presión arterial y las tasas de control de glucosa en sangre aumentaron significativamente (p < 0,001). Conclusiones: la fórmula de sal con un 23 % de sodio combinada con la dieta DASH en su versión china modificada puede mejorar la función cerebrovascular en pacientes comunitarios con hipertensión complicada por la diabetes y es beneficiosa a corto plazo para la presión arterial y el control de la glucosa. (AU)


Assuntos
Humanos , Pessoa de Meia-Idade , Idoso , Dieta Hipossódica , Abordagens Dietéticas para Conter a Hipertensão/métodos , Hipertensão/terapia , Diabetes Mellitus Tipo 2/terapia , China , Projetos Piloto
4.
Nutr Hosp ; 40(5): 993-999, 2023 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-37732352

RESUMO

Introduction: Aim: to investigate the effects of low sodium formula salt combined with the Chinese Modified Dietary Approaches to Stop Hypertension (DASH) diet on cerebrovascular function in patients with hypertension and type 2 diabetes. Methods: an eight-week single-arm trial was conducted in 66 patients with hypertension and type 2 diabetes to investigate effects of low sodium formula salt (potassium chloride 56 %, sodium chloride 23 %, 5 g/day) combined with Chinese Modified DASH diet on cerebrovascular function (measured by transcranial Doppler sonography), indicators of chronic diseases (blood pressure, blood glucose and blood lipids) and urinary excretion. The above indicators were performed before and after intervention. Results: fifty-nine subjects completed the study. Peak systolic velocity, mean flow velocity, end-diastolic velocity, pulsatility index and resistance index of internal cerebral artery and vertebral artery decreased significantly (p < 0.05); pulsatility index and resistance index of anterior cerebral artery and middle cerebral artery decreased significantly (p < 0.05); and end-diastolic velocity and pulsatility index of basilar artery decreased significantly (p < 0.05). Systolic blood pressure, diastolic blood pressure, fasting blood glucose and postprandial blood glucose decreased significantly (p < 0.001; p < 0.001; p < 0.001; p < 0.001). Blood pressure and blood glucose control rates increased significantly (p < 0.001). Conclusions: based on the study, 23 % low-sodium formula combined with CM-DASH diet pattern can improve cerebrovascular function in community patients with hypertension complicated with diabetes and has a good short-term benefit of blood pressure and glucose control.


Introducción: Objetivo: investigar los efectos de una sal baja en sodio combinada con la versión china de la dieta DASH (del inglés Dietary Approaches to Stop Hypertension) modificada en la función cerebrovascular en pacientes con hipertensión y diabetes tipo 2. Métodos: en 66 pacientes con hipertensión y diabetes tipo 2 se llevó a cabo un ensayo de ocho semanas para investigar los efectos de la sal baja en sodio (cloruro de potasio 56 %, cloruro de sodio 23 %, 5 g/día) combinada con la dieta DASH en su versión china modificada en la función cerebrovascular (medido por sonografía Doppler transcraneal), los indicadores de enfermedades crónicas (presión arterial, glucosa sanguínea y lípidos sanguíneos) y la excreción urinaria. Los indicadores anteriores se midieron antes y después de la intervención. Resultados: cincuenta y nueve sujetos completaron el estudio. La velocidad sistólica máxima, la velocidad media del flujo, la velocidad diastólica final, el índice de pulsatilidad y el índice de resistencia de la arteria cerebral anterior y la arteria vertebral disminuyeron significativamente (p < 0,05) ; el índice de pulsatilidad y el índice de resistencia de la arteria cerebral anterior y la arteria media disminuyeron significativamente (p < 0,05); y la velocidad diastólica final y el índice de pulsatilidad de la arteria basilar disminuyeron significativamente (p < 0,05). La presión arterial sistémica, la presión arterial diastólica, la glucosa arterial en ayuno y la glucemia posprandial disminuyeron significativamente (p < 0,001, p < 0,001, p < 0,001, p < 0,001). La presión arterial y las tasas de control de glucosa en sangre aumentaron significativamente (p < 0,001). Conclusiones: la fórmula de sal con un 23 % de sodio combinada con la dieta DASH en su versión china modificada puede mejorar la función cerebrovascular en pacientes comunitarios con hipertensión complicada por la diabetes y es beneficiosa a corto plazo para la presión arterial y el control de la glucosa.


Assuntos
Diabetes Mellitus Tipo 2 , Abordagens Dietéticas para Conter a Hipertensão , Hipertensão , Humanos , Glicemia , Pressão Sanguínea , Diabetes Mellitus Tipo 2/complicações , Dieta Hipossódica , População do Leste Asiático , Álcoois Graxos/farmacologia , Hipertensão/complicações , Projetos Piloto , Cloreto de Sódio na Dieta
5.
Rev. mex. anestesiol ; 46(2): 140-143, abr.-jun. 2023. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1508634

RESUMO

Resumen: La estenosis carotídea (EC) ocurre en 13% de los pacientes con estenosis valvular aórtica (EVA). El riesgo de evento vascular cerebral (EVC), en los pacientes con EC significativa sometidos a cirugía valvular cardíaca, puede aumentar hasta 11%. Someter a un paciente con EVA crítica y fracción de eyección del ventrículo izquierdo (FEVI) disminuida a endarterectomía carotídea es todo un reto anestésico, cuyo principal objetivo es evitar la hipotensión y el bajo gasto cardíaco. La anestesia regional es una opción para estos pacientes. Presentamos el caso de un hombre de 70 años con diagnóstico de EC significativa y EVA crítica con disfunción ventricular izquierda, al que se realizó endarterectomía carotídea con bloqueo del plexo cervical superficial por alto riesgo de colapso circulatorio. Dicha estrategia anestésica permitió mantener al paciente despierto durante la cirugía, al valorar continuamente su estado neurológico. Asimismo, se documentaron los cambios transoperatorios en el NIRS (Near-infrared spectroscopy) cerebral y Doppler transcraneal (DTC), los cuales se correlacionaron con el estado clínico del paciente. En un segundo tiempo se hizo cambio valvular aórtico sin complicaciones. En este caso destaca la importancia de la anestesia regional y el monitoreo neurológico con Doppler transcraneal, en pacientes sometidos a endarterectomía carotídea con alto riesgo quirúrgico por EVA crítica.


Abstract: Carotid stenosis occurs in 13% of patients with aortic valve stenosis. The risk of stroke in patients with significant carotid stenosis undergoing heart valve surgery may increase to 11%. Proposing a patient with critical aortic valve stenosis and left ventricular dysfunction to carotid endarterectomy is an anesthetic challenge, where the objective is to avoid hypotension and low cardiac output. Regional anesthesia is an option for these patients. Due to the high incidence of intraoperative stroke during carotid endarterectomy, continuous neurological monitoring is of relevance. We present the case of a 70-year-old man diagnosed with significant carotid stenosis and critical aortic valve stenosis and left ventricular dysfunction who underwent carotid endarterectomy with superficial cervical plexus block due to a high risk of circulatory collapse. In addition, this anesthetic strategy made it possible to keep the patient awake during surgery, and to continuously assess their neurological status. Likewise, transoperative changes in brain NIRS and transcranial Doppler were documented, which correlated with the patient's clinical status. In a second time, aortic valve replacement was performed without complications. This case highlights the importance of regional anesthesia and neurological monitoring in patients undergoing carotid endarterectomy with high surgical risk due to critical aortic valve stenosis.

6.
Rev Esp Anestesiol Reanim (Engl Ed) ; 70(5): 269-275, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37150439

RESUMO

BACKGROUND: Brain ultrasound allows measuring the cerebral flow velocity, brain midline shift and optic nerve sheath diameter. Literature is scarce in determining the feasibility to perioperatively perform these measurements altogether and the cerebrovascular behavior in patients scheduled for elective craniotomy. METHODS: We assessed bilateral cerebral flow velocities, composite index, brain midline shift and optic nerve sheath diameter by cerebral ultrasound in patients scheduled for elective craniotomy before anesthetic induction, at extubation, and at 6 and 24 h after. The aim was to assess the feasibility of brain ultrasound in patients for elective craniotomy and to describe the changes in cerebral flow velocities, brain midline shift and optic nerve sheath diameter from baseline values at different times in the postoperative period. RESULTS: Sixteen patients were included, of these two were excluded from analysis due to an inadequate sonographic window. There were no changes throughout the study regarding cerebral flow velocity, brain midline shift nor optic nerve sheath diameter assessments. All parameters were maintained in the physiological range without significant variations during the procedure. No perioperative complications were detected. CONCLUSIONS: The results of our study show the feasibility to perform a perioperative assessment of cerebral flow velocity, brain midline shift or optic nerve sheath diameter jointly and successfully to obtain additional information of baseline cerebral hemodynamics in patients scheduled for elective craniotomy and their postoperative changes during the first 24 h. Future studies with lager samples are needed to address the efficacy of cerebral ultrasound as a monitoring tool.


Assuntos
Encéfalo , Ultrassonografia Doppler Transcraniana , Humanos , Estudos de Viabilidade , Velocidade do Fluxo Sanguíneo , Craniotomia , Nervo Óptico/diagnóstico por imagem
7.
Rev. esp. anestesiol. reanim ; 70(5): 269-275, May. 2023. tab
Artigo em Espanhol | IBECS | ID: ibc-219859

RESUMO

Introducción: La ecografía cerebral permite valorar las velocidades del flujo sanguíneo cerebral (VFSC), la desviación de la línea media (DLM) y el diámetro de la vaina del nervio óptico (DVNO). La literatura es escasa en determinar la viabilidad de realizar dichas medidas, de forma conjunta en el perioperatorio, en pacientes programados para craneotomía electiva. Métodos: Evaluamos las VFSC de forma bilateral con sus índices compuestos, la DLM y el DVNO por medio de ultrasonido cerebral en pacientes programados para craneotomía electiva antes de la inducción anestésica, en la extubación inmediata, a las seis y 24 horas posoperatorias. El objetivo fue evaluar la viabilidad del uso de la ecografía cerebral en pacientes sometidos a craneotomía electiva y describir los cambios de estas mediciones en diferentes momentos con respecto a los valores basales. Resultados: Fueron incluidos 16 pacientes en el estudio, de los cuales dos se excluyeron del análisis debido a una mala ventana ecográfica. No hubo cambios a lo largo del estudio con respecto a las VFSC, tampoco en la DLM o en el DVNO. Todos los parámetros se mantuvieron dentro de los rangos fisiológicos sin variaciones significativas durante el procedimiento. No hubo complicaciones perioperatorias. Conclusiones: Los resultados de nuestro trabajo muestran la factibilidad de realizar una valoración perioperatoria de las VFSC, DLM y DVNO de forma conjunta y exitosa para obtener información de la hemodinámica cerebral basal en pacientes programados para craneotomía electiva y valorar sus cambios durante las primeras 24 horas del posoperatorio. Son necesarios estudios con mayor número de pacientes para evaluar la eficacia del ultrasonido cerebral como herramienta de monitorización neurológica perioperatoria.(AU)


Background: Brain ultrasound allows measuring the cerebral flow velocity, brain midline shift and optic nerve sheath diameter. Literature is scarce in determining the feasibility to perioperatively perform these measurements altogether and the cerebrovascular behavior in patients scheduled for elective craniotomy. Methods: We assessed bilateral cerebral flow velocities, composite index, brain midline shift and optic nerve sheath diameter by cerebral ultrasound in patients scheduled for elective craniotomy before anesthetic induction, at extubation, and at 6 and 24 hours after. The aim was to assess the feasibility of brain ultrasound in patients for elective craniotomy and to describe the changes in cerebral flow velocities, brain midline shift and optic nerve sheath diameter from baseline values at different times in the postoperative period. Results: Sixteen patients were included, of these two were excluded from analysis due to an inadequate sonographic window. There were no changes throughout the study regarding cerebral flow velocity, brain midline shift nor optic nerve sheath diameter assessments. All parameters were maintained in the physiological range without significant variations during the procedure. No perioperative complications were detected. Conclusions: The results of our study show the feasibility to perform a perioperative assessment of cerebral flow velocity, brain midline shift or optic nerve sheath diameter jointly and successfully to obtain additional information of baseline cerebral hemodynamics in patients scheduled for elective craniotomy and their postoperative changes during the first 24 hours. Future studies with lager samples are needed to address the efficacy of cerebral ultrasound as a monitoring tool.(AU)


Assuntos
Humanos , Neoplasias do Nervo Óptico , Craniotomia , Ultrassonografia Doppler Transcraniana , Neurocirurgia , Estudos Prospectivos , Nervo Óptico
8.
Arch. argent. pediatr ; 120(6): 415-419, dic. 2022. tab, graf
Artigo em Inglês, Espanhol | LILACS, BINACIS | ID: biblio-1398285

RESUMO

Introducción. El uso del Doppler transcraneal (DTC) en pacientes neurocríticos se reporta cada vez más en las terapias intensivas pediátricas. El objetivo de esta encuesta es conocer los usos y prácticas del DTC en la atención neurocrítica y el proceso de formación del personal que realiza el estudio. Materiales y métodos. Encuesta a profesionales de 23 unidades de terapia intensiva pediátrica de Argentina. Resultados. Porcentaje de respuesta del 86 %. Se utilizó en sospecha de muerte encefálica (n = 20), trauma de cráneo (n = 16) y accidente cerebrovascular (n = 16). El intensivista pediátrico es quien realiza los estudios (n = 13/20). Los encuestados utilizan el Doppler para decidir conductas y tratamientos, comenzar el proceso de evaluación de muerte encefálica, solicitar tomografía de cerebro y manejar la presión de perfusión cerebral con vasopresores. Conclusión. Todos los encuestados utilizan los hallazgos del DTC para guiar tratamientos o conductas. La mitad de los encuestados está poco conforme con la capacitación recibida.


Introduction. The use of transcranial Doppler (TCD) ultrasoundin neurocritical patients is reported to be increasingly common in pediatric intensive care units. The objective of this survey was to know about the use and practice of TCD ultrasound in neurocritical care and the training process of staff members performing it. Materials and methods. Survey administered to providers from 23 pediatric intensive care units of Argentina. Results. The percentage of response was 86%. TCD ultrasound was used for suspected brain death (n = 20), head injury (n = 16), and stroke (n = 16). Pediatric intensivists perform the test (n = 13/20). Surveyed participants use TCD ultrasound to decide on treatment and management, start brain death assessment, request brain computed tomography, and manage cerebral perfusion pressure with vasopressors. Conclusion. All surveyed participants use TCD ultrasound findings to guide management or treatments. Half of surveyed participants are little satisfied with their training.


Assuntos
Humanos , Pré-Escolar , Criança , Morte Encefálica , Cuidados Críticos/métodos , Argentina , Unidades de Terapia Intensiva Pediátrica , Ultrassonografia Doppler Transcraniana/métodos
9.
Med. crít. (Col. Mex. Med. Crít.) ; 36(6): 363-370, Aug. 2022. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1506661

RESUMO

Resumen: Introducción: preeclampsia, la complicación más común del embarazo, ocasiona más de 76,000 muertes maternas al año, principalmente por complicaciones neurológicas. La alteración en la vasorregulación cerebral es clave en la patogénesis de dichas complicaciones. La ecografía Doppler transcraneal (EDT) evalúa el flujo de las principales arterias cerebrales, pero se desconocen los cambios que presentan las pacientes con preeclampsia/eclampsia. Objetivo: descripción de los cambios en el flujo sanguíneo cerebral evaluados mediante EDT en pacientes con preeclampsia/eclampsia. Material y métodos: se realizó EDT a las pacientes con diagnóstico de preeclampsia y/o eclampsia atendidas de forma consecutiva en la Unidad de Cuidados Intensivos del Hospital Civil de Guadalajara, del 01 de marzo de 2019 al 01 de marzo de 2021 y grupo control de embarazadas sanas; describimos el patrón de flujo de las arterias cerebrales anterior, media, posterior y arteria basilar. Resultados: Ochenta pacientes, 50 con preeclampsia/eclampsia y 30 embarazadas sanas, edad 23 ± 6.7, 50% primigestas, 34.8 ± 4.3 semanas de gestación. La presión de perfusión cerebral de las arterias cerebrales media derecha > 74 mmHg (sensibilidad 0.88, especificidad 0.86, ABC 0.92) y anterior derecha > 69 mmHg (sensibilidad 0.89, especificidad 0.93, ABC 0.92) tuvieron la mayor asociación con preeclampsia/eclampsia. El índice de flujo sanguíneo de las arterias cerebrales posteriores tuvo asociación significativa con eclampsia (p = 0.02), ABC: 0.695 (p = 0.009), punto de corte ≥ 34.6 cm/s (sensibilidad 1.0, especificidad 0.43, OR 26). Conclusiones: un incremento generalizado de la presión de perfusión es el hallazgo más común en preeclampsia/eclampsia. Aumento en el índice de flujo sanguíneo en las arterias cerebrales posteriores se asocia a complicaciones neurológicas graves en pacientes con preeclampsia.


Abstract: Introduction: preeclampsia, the most common complication of pregnancy, leads to > 76,000 maternal deaths annually, mainly due to neurological complications. An alteration in cerebral vasoregulation is key in the pathogenesis of these complications. Transcranial Doppler Ultrasound (TCD) evaluates the flow of the main cerebral arteries and could help to predict the development of preeclampsia/eclampsia and its complications. Objective: to determine the most frequent cerebral blood flow changes in preeclampsia/eclampsia. Material and methods: we prospectively analyzed by TCD patients with preeclampsia/eclampsia on admission to the ICU. Results: Eighty patients, 50 with preeclampsia/eclampsia and 30 healthy pregnant women, age 23 ± 6.7, 50% primigravida, 34.8 ± 4.3 weeks gestation. Cerebral perfusion pressure of right middle cerebral arteries > 74 mmHg (sensitivity 0.88, specificity 0.86, AUC 0.92) and right anterior cerebral arteries > 69 mmHg (sensitivity 0.89, specificity 0.93, AUC 0.92), had the highest association with preeclampsia/eclampsia. Posterior cerebral artery blood flow index had significant association with eclampsia (p = 0.02), AUC 0.695 (p = 0.009), with a cut-off ≥ 34.6 cm/s (sensitivity 1.0, specificity 0.43, OR 26). Conclusions: a generalized increase in perfusion pressure is the most common finding in preeclampsia/eclampsia. Hyper flow in the posterior cerebral arteries may predict severe neurological complications.


Resumo: Introdução: a pré-eclâmpsia, complicação mais comum da gravidez, causa mais de 76,000 mortes maternas anualmente, principalmente devido a complicações neurológicas. A vasorregulação cerebral alterada é fundamental na patogênese dessas complicações. A ultrassonografia Doppler transcraniana (DTC) avalia o fluxo das principais artérias cerebrais, as alterações que os pacientes com pré-eclâmpsia/eclâmpsia apresentam são desconhecidas. Objetivo: descrição das alterações do fluxo sanguíneo cerebral avaliados por DTC em pacientes com pré-eclâmpsia/eclâmpsia. Material e métodos: DTC foi realizado em pacientes com diagnóstico de pré-eclâmpsia e/ou eclâmpsia tratados consecutivamente na unidade de terapia intensiva do Hospital Civil de Guadalajara, de 1o de março de 2019 a 1o de março de 2021 e um grupo controle de gestantes saudáveis; descrevemos o padrão de fluxo das artérias cerebrais anterior, média, posterior e da artéria basilar. Resultados: 80 pacientes, 50 com pré-eclâmpsia/eclâmpsia e 30 gestantes saudáveis, idade 23 ± 6.7, 50% primíparas, 34.8 ± 4.3 semanas de gestação. A pressão de perfusão cerebral das artérias cerebrais médias direitas > 74 mmHg (sensibilidade 0.88, especificidade 0.86, AUC 0.92) e anterior direita > 69 mmHg (sensibilidade 0.89, especificidade 0.93, AUC 0.92), teve a maior associação com pré-eclâmpsia/eclâmpsia. O índice de fluxo sanguíneo das artérias cerebrais posteriores, teve associação significativa com eclâmpsia (p = 0.02), AUC: 0.695 (p = 0.009), ponto de corte ≥ 34.6 cm/s (sensibilidade 1.0, especificidade 0.43, OR 26). Conclusões: Um aumento generalizado da pressão de perfusão é o achado mais comum na pré-eclâmpsia/eclâmpsia. O aumento da taxa de fluxo sanguíneo nas artérias cerebrais posteriores está associado a complicações neurológicas graves em pacientes com pré-eclâmpsia.

10.
An. Fac. Med. (Perú) ; 81(4): 416-419, oct.-dic 2020. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1278290

RESUMO

RESUMEN Introducción. El índice de resistencia (IR) de la arteria cerebral anterior (ACA) permite evaluar el flujo sanguíneo y se utiliza para determinar el bienestar fetal. Objetivo. Determinar el flujo de la arteria cerebral anterior en muy prematuros durante las primeras 72 horas de vida. Métodos. Se revisaron historias clínicas de muy prematuros atendidos en la Unidad de Cuidados Intensivos Neonatales del Hospital Nacional Edgardo Rebagliati Martins (HNERM), EsSalud, Lima-Perú, entre los años 2011-2019. Resultados. Se revisaron 56 historias clínicas que reportaron el índice de resistencia de la arteria cerebral anterior en muy prematuros del HNERM. Los valores promedio del IR de la ACA fueron: 0,695 a las 24 horas; 0,69 a las 48 horas; y 0,667 a las 72 horas. El flujo sistólico promedio de la arteria cerebral anterior a las 48 horas de vida fue similar al de la vida intrauterina; a las 72 horas, el flujo diastólico promedio fue menor. Conclusiones. En muy prematuros atendidos en la Unidad de Cuidados Intensivos Neonatales del HNHRM, los valores promedio del IR de la ACA fueron: 0,695 a las 24 horas; 0,69 a las 48 horas; y 0,667 a las 72 horas.


ABSTRACT Introduction. The anterior cerebral artery (ACA) resistance index (IR) is used to assess blood flow and is used to determine fetal well-being. Objective. To determine the flow of the anterior cerebral artery in very preterm infants during the first 72 hours of life. Methods. Medical records of very preterm infants treated in the Neonatal Intensive Care Unit of Edgardo Rebagliati Martins National Hospital (HNERM), EsSalud, Lima-Peru, between the years 2011-2019 were reviewed. Results. 56 medical records were reviewed that reported the index of resistance of the anterior cerebral artery in very premature infants of the HNERM. The mean values of the IR of the ACA were: 0,695 at 24 hours; 0,69 at 48 hours; and 0,667 at 72 hours. The mean systolic flow of the cerebral artery prior to 48 hours of life was similar to that of intrauterine life; at 72 hours, the mean diastolic flow was lower. Conclusions. In very preterm infants treated in the Neonatal Intensive Care Unit of the HNHRM, the average RI values of the ACA were: 0,695 at 24 hours; 0,69 at 48 hours; and 0,667 at 72 hours.

11.
CES med ; 34(1): 74-82, ene.-abr. 2020. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1149158

RESUMO

Resumen El vasoespasmo cerebral es una complicación severa de la hemorragia subaracnoidea. La monitorización y la detección del vasoespasmo por mé- todos no invasivos, así como la terapia endovascular, han revolucionado la atención médica tradicional. Se presenta el caso de un paciente masculino de 45 años con aneurisma roto de la arteria comunicante anterior, quien desarrolló vasoespasmo severo refractario desde el octavo día de hemorragia subaracnoidea. El vasoespasmo fue detectado oportunamente con técnicas no invasivas y tratado en cinco ocasiones mediante terapia endovascular, logrando mejoría inmediata de los síntomas y sin secuelas neurológicas. Este reporte contribuye a demostrar el beneficio de la terapia endovascular múltiple para el manejo del vasoespasmo cerebral refractario, en combinación con la utilización de técnicas no invasivas para la monitorización y detección oportuna del vasoespasmo. Adicionalmente, se revisan las recomendaciones actuales de medicina basada en la evidencia sobre el uso del Doppler transcraneal para la detección del vasoespasmo cerebral.


Abstract Cerebral vasospasm is a severe complication of subarachnoid hemorrhage. Monitoring and detection of vasospasm by non-invasive methods as well as the endovascular therapy have revolutionized healthcare. A 45-years-old male patient presented with a ruptured aneurysm in the anterior communicating artery and developed severe refractory vasospasm since the eighth day of aneurysm rupture. Vasospasm was timely detected with non-invasive techniques and successfully endovascular therapy was provided five times with neurological and radiological recovery each time and no neurological sequelae. This report contributes to current practice as it demonstrates the benefit of repeated endovascular therapy for refractory cerebral vasospasm, especially when clinical and non-invasive monitoring shows persistence of this complication. Furthermore, we review the current evidence-based medicine recommendations about Transcranial Doppler Ultrasonography that support the monitoring and detection of cerebral vasospasm.

12.
Med Intensiva (Engl Ed) ; 44(1): 1-8, 2020.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-30270144

RESUMO

OBJECTIVE: To evaluate the feasibility of using the Sentinella® portable gamma-camera for the diagnosis of brain death (BD). DESIGN: A prospective, observational feasibility study was carried out. SETTING: Intensive Care Unit of a third level hospital. PATIENTS: Consecutive recording was made of the adults diagnosed with brain death based on clinical criteria following admission to the Intensive Care Unit in the period from January to December 2017. INTERVENTIONS: The procedure was performed at the patient bedside with the intravenous administration of technetium 99 metastable hexamethylpropylene amine oxime. The absence of perfusion in the cerebral hemispheres and brainstem was described as a pattern consistent with BD. The diagnosis was correlated to the transcranial Doppler and / or electroencephalographic findings. RESULTS: A total of 66.1% of the patients were men with an average age of 60 years [IQR: 51-72]. The most frequent causes resulting in BD were hemorrhagic stroke (48.2%, n=27), followed by traumatic brain injury (30.4%, n=17), ischemic stroke (10.7%, n=6) and post-cardiac arrest anoxic encephalopathy (7.1%, n=4). A clinical diagnosis of BD was made in all cases, and the portable gamma-camera confirmed the diagnosis in 100% of the patients with a pattern characterized by the absence of brain perfusion. In addition, the results were compared with the transcranial Doppler findings in 46 patients, confirming the presence of diastolic reverberation and / or systolic peaks. The electroencephalographic tracing was obtained in 10 cases, with the appearance of electrical silence, due to the absence of an acoustic window in the transcranial Doppler study. CONCLUSIONS: A portable gamma-camera could be a useful and feasible tool for the diagnosis of BD.


Assuntos
Morte Encefálica/diagnóstico por imagem , Câmaras gama , Cintilografia , Idoso , Lesões Encefálicas Traumáticas/complicações , Lesões Encefálicas Traumáticas/diagnóstico por imagem , Eletroencefalografia , Estudos de Viabilidade , Feminino , Acidente Vascular Cerebral Hemorrágico/complicações , Acidente Vascular Cerebral Hemorrágico/diagnóstico por imagem , Humanos , AVC Isquêmico/complicações , AVC Isquêmico/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Oximas/administração & dosagem , Síndrome Pós-Parada Cardíaca/complicações , Síndrome Pós-Parada Cardíaca/diagnóstico por imagem , Estudos Prospectivos , Cintilografia/instrumentação , Cintilografia/métodos , Tecnécio/administração & dosagem , Ultrassonografia Doppler Transcraniana
13.
Neurologia (Engl Ed) ; 35(8): 563-567, 2020 Oct.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-29291907

RESUMO

INTRODUCTION: The diagnosis of vascular parkinsonism (VP) is based on a series of clinical criteria and neuroimaging findings. An increase in transcranial Doppler ultrasonography pulsatility index (PI) has been described as a frequent finding in patients with VP. We aimed to confirm this association and to determine the PI value with the highest sensitivity and specificity for diagnosis of VP. METHOD: PI was determined in all patients admitted to Hospital Universitari i Politècnic La Fe due to parkinsonism between January 2012 and June 2016. We assessed the probability of having VP based on PI values in patients with a definite diagnosis of either VP or idiopathic Parkinson's disease (IPD). A ROC curve was created to determine the PI value with the highest sensitivity and specificity. RESULTS: We assessed a total of 146 patients with suspected parkinsonism; 54 (37%) were diagnosed with IPD and 15 (10%) with VP. Patients with VP were significantly older than those with IPD (mean age of 79 vs 68.5, P=.00144) and had a higher PI (median of 1.29 [IQR: 1.09-1.38] vs 0.96 [IQR: 0.89-1.16], P=.01328). In our sample, a PI of 1.09 conferred 84% sensitivity and 70% specificity. CONCLUSIONS: In our series, the PI was significantly higher in patients with VP than in those with IPD. We therefore support the use of transcranial Doppler ultrasonography for the initial assessment of elderly patients with akinetic-rigid syndrome.


Assuntos
Doença de Parkinson Secundária/diagnóstico , Doença de Parkinson/diagnóstico , Ultrassonografia Doppler Transcraniana/métodos , Idoso , Idoso de 80 Anos ou mais , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Neuroimagem , Doenças Vasculares
14.
Rev. argent. radiol ; 83(4): 141-150, oct. 2019. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1057416

RESUMO

Resumen Objetivo: Describir los hallazgos en resonancia magnética (RM) de encéfalo en pacientes menores de 65 años que fueron estudiados por Doppler transcraneal (DTC) con contraste de microburbujas, con antecedentes de accidente cerebrovascular (ACV) criptogénico y sospecha de foramen oval permeable (FOP). Materiales y métodos: Este estudio transversal retrospectivo incluyó pacientes de ambos sexos, menores de 65 años. Resultados: Nuestra muestra (n = 47, 47% masculino y 53% femenino, edad media de 42 años) presentó señales transitorias de alta intensidad (HITS, por su sigla en inglés) positivo en el 61,7% y HITS-negativo en el 38,3%. En pacientes HITS-positivo, predominaron las lesiones a nivel de las fibras en U subcorticales, únicas o múltiples con distribución bilateralmente simétrica. En pacientes con HITS moderados, predominaron las lesiones en el territorio vascular de la circulación posterior. Conclusión: En pacientes menores de 65 años con ACV criptogénico y lesiones en fibras en U subcorticales, únicas o múltiples con distribución bilateral y simétrica, debe tenerse en cuenta un FOP como posible causa de dichas lesiones.


Abstract Objectives: To analyze the findings on brain magnetic resonance imaging (MRI) in patients less than 65 years of age with history of cryptogenic stroke and suspected patent foramen ovale (PFO) who were studied with Contrast-Transcranial Doppler. Materials and Methods: This transversal retrospective study included both, men and women less than 65 years of age. Results: Our sample (n = 47, 47% male and 53% female, average age 42 years old) had High Intensity Transient Signals (HITS)-positive in 61.7% and HITS-negative in 38.3%. In HITS-positive patients, lesions were predominantly located on the subcortical U fibers, lone or multiple bilateral symmetric distributions. In patients with moderate-severity HITS, the posterior circulation was the most affected. Conclusion: In patients less than 65 years of age with cryptogenic stroke with lesions affecting the subcortical U fibers, with unique or multiple bilateral symmetric distributions, a PFO should be considered as an underlying cause.


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Encéfalo , Lesões Encefálicas , Lesões Encefálicas/diagnóstico por imagem , Espectroscopia de Ressonância Magnética , Ferimentos e Lesões , Imageamento por Ressonância Magnética , Causalidade , Estudos Retrospectivos , Ultrassonografia Doppler Transcraniana/métodos , Acidente Vascular Cerebral , Forame Oval Patente
15.
Cir Cir ; 87(5): 580-586, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31448774

RESUMO

Monitoring of the neurocritical in the perioperatory is in constant evolution. There are essentially two ultrasonographic application of neuromonitoring: the diameter of the sheath of the optic nerve and transcranial Doppler. Ultrasound-guided neuromonitoring can detect stenosis or occlusion of intracranial arteries, monitor the evolution of patients with vasospasm after subarachnoid hemorrhage, detect cerebral embolism, evaluate the cerebral collateral system, determine brain death, calculate indirectly Intracranial pressure and cerebral perfusion and helps in clinical decisions and early therapeutic interventions in neurocritical care. The purpose of this review is to present the applications of ultrasonography to the head of the patient in neuromonitoring.


El monitoreo del paciente neurocrítico en el perioperatorio se encuentra en constante evolución. Existen fundamentalmente dos evaluaciones ultrasonográficas de neuromonitoreo: el diámetro de la vaina del nervio óptico y el Doppler transcraneal. En la actualidad, el neuromonitoreo guiado por ultrasonido permite detectar estenosis u oclusión de arterias intracraneales, monitorizar la evolución de los enfermos que presentan vasoespasmo tras una hemorragia subaracnoidea, detectar embolias cerebrales, evaluar el sistema colateral cerebral, determinar la muerte cerebral, calcular de manera indirecta la presión intracraneana y la perfusión cerebral, entre otras, y de esta manera poder tomar decisiones terapéuticas tempranas en el manejo del paciente neurocrítico. El motivo de esta revisión es dar a conocer las aplicaciones de la ultrasonografía a la cabecera del enfermo en neuromonitoreo.


Assuntos
Transtornos Cerebrovasculares/diagnóstico por imagem , Monitorização Neurofisiológica Intraoperatória/métodos , Neuroimagem/métodos , Nervo Óptico/diagnóstico por imagem , Assistência Perioperatória/métodos , Ultrassonografia Doppler Transcraniana , Morte Encefálica/diagnóstico por imagem , Lesões Encefálicas Traumáticas/diagnóstico por imagem , Circulação Cerebrovascular/efeitos dos fármacos , Tomada de Decisão Clínica , Humanos , Pressão Intracraniana , Órbita/diagnóstico por imagem , Fluxo Pulsátil , Hemorragia Subaracnóidea/diagnóstico por imagem , Vasoconstritores/farmacologia , Vasoespasmo Intracraniano/diagnóstico por imagem
16.
Radiologia (Engl Ed) ; 61(5): 405-411, 2019.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-31164236

RESUMO

BACKGROUND: Transcranial Doppler ultrasound (TDU) is useful in cerebrovascular patients. TDU findings are operator-dependent; they can also be influenced by anatomical and physiological variables as well as by the altitude at which the study is done. OBJECTIVE: To report the cerebral hemodynamic parameters measured by TDU in subjects who live in Quito, Ecuador (altitude 2850 meters). MATERIAL AND METHODS: We recruited 47 volunteers with no history or clinical evidence of stroke, hypertension, metabolic disorders, or hematologic disorders; 2 patients were excluded because they did not have a viable cranial window for TDU study. Thus, we recorded mean cerebral blood flow velocity, peak systolic flow velocity, end-diastolic flow velocity, and pulsatility indices in 45 patients (28 (62.2%) women; mean age, 35.9 years). We recorded patients' age, sex, and hematocrit. We analyzed cerebrovascular hemodynamic parameters by sex and age group. RESULTS: No significant differences between hemispheres were observed in mean flow velocities, except in the anterior cerebral arteries with right predominance. Flow velocities were higher in women and in the youngest age group. No significant differences in the pulsatility indices were found between sexes or between age groups. The flow velocities in this series are lower than those reported for other series. CONCLUSIONS: The hemodynamic parameters in this series are lower than in other series and are influenced by the altitude, age, and sex.


Assuntos
Circulação Cerebrovascular/fisiologia , Ultrassonografia Doppler Transcraniana , Adolescente , Adulto , Altitude , Equador , Feminino , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Adulto Jovem
17.
Neurologia (Engl Ed) ; 34(8): 536-542, 2019 Oct.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-28427768

RESUMO

INTRODUCTION: HaNDL syndrome (transient headache and neurological deficits with cerebrospinal fluid lymphocytosis) is characterised by one or more episodes of headache and transient neurological deficits associated with cerebrospinal fluid lymphocytosis. To date, few cases of HaNDL manifesting with confusional symptoms have been described. Likewise, very few patients with HaNDL and confusional symptoms have been evaluated with transcranial Doppler ultrasound (TCD). TCD data from patients with focal involvement reveal changes consistent with vasomotor alterations. DEVELOPMENT: We present the case of a 42-year-old man who experienced headache and confusional symptoms and displayed pleocytosis, diffuse slow activity on EEG, increased blood flow velocity in both middle cerebral arteries on TCD, and single-photon emission computed tomography (SPECT) findings suggestive of diffuse involvement, especially in the left hemisphere. CONCLUSIONS: To our knowledge, this is the first description of a patient with HaNDL, confusional symptoms, diffuse slow activity on EEG, and increased blood flow velocity in TCD. Our findings suggest a relationship between cerebral vasomotor changes and the pathophysiology of HaNDL. TCD may be a useful tool for early diagnosis of HaNDL.


Assuntos
Confusão/complicações , Cefaleia/complicações , Linfocitose/complicações , Doenças do Sistema Nervoso/complicações , Vasoespasmo Intracraniano/complicações , Adulto , Confusão/fisiopatologia , Eletroencefalografia , Cefaleia/líquido cefalorraquidiano , Humanos , Linfocitose/líquido cefalorraquidiano , Masculino , Doenças do Sistema Nervoso/líquido cefalorraquidiano , Síndrome , Fatores de Tempo , Ultrassonografia Doppler Transcraniana , Vasoespasmo Intracraniano/diagnóstico por imagem
18.
Rev. ecuat. neurol ; 27(2): 20-24, may.-ago. 2018. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1004018

RESUMO

Resumen Introducción: Las fístulas carótido cavernosas son malformaciones vasculares infrecuentes que generan un shunt arteriovenoso patológico que compromete el funcionamiento ocular. El diagnóstico definitivo se establece a través de una arteriografía cerebral. Sin embargo, su carácter invasivo limita su uso en el seguimiento. El objetivo de este trabajo es ilustrar el valor del estudio con ultrasonido doppler transcraneal para el diagnóstico y describir los parámetros de flujo que pudieran modificarse. Pacientes: Se realizó una revisión retrospectiva de las historias clínicas de los pacientes atendidos con diagnóstico de fistula carótido cavernosa en la unidad de ictus del Hospital CQ Hermanos Ameijeiras de La Habana, entre enero de 2005 y mayo de 2014. Se recogieron variables demográficas y de la enfermedad, así como los resultados de los estudios de imagen y ultrasonido. Resultados: Se describen las características clínicas e imagenológicas de tres enfermos en los que se confirmó el diagnóstico. En los dos pacientes con comunicaciones directas, se registró un aumento de la velocidad media de flujo en la vena oftálmica, arterializada, con disminución de la pulsatilidad; sumado a aumento en la velocidad de pico diastólico en la arteria carótida interna ipsilateral a la fístula. En el paciente con la fístula indirecta los cambios fueron menos marcados. Conclusión: El estudio con ultrasonido fue de utilidad en el diagnóstico de las fístulas carótido cavernosa. Mostró diferencias en parámetros de flujo que pueden servir para clasificar las fistulas.


Abstract Introduction: Carotid cavernous fistulas are infrequent vascular malformations that generate a pathological arteriovenous shunt, which compromises ocular function. The definitive diagnosis is established by cerebral arteriography. However, its invasive nature limits its use in follow-up. The aim of this work is to illustrate the value of the study with transcranial doppler ultrasound for the diagnosis of cavernous carotid fistulas and to describe the flow parameters that could be modified. Patients: A retrospective review of the clinical histories of the patients treated with a diagnosis of cavernous carotid fistula was carried out in the stroke unit of the Hermanos Ameijeiras Hospital in Havana, between January 2005 and May 2014. Demographic and disease variables were collected, as well as the results of imaging and ultrasound studies. Results: We describe the clinical and imaging characteristics of three patients in whom carotid cavernous fistula was confirmed. In the two patients with direct communications, an increase of the mean flow velocity in the ophthalmic vein, arterialized, with decrease in pulsatility were registered; in addition to an increase in the diastolic peak velocity in the internal carotid artery ipsilateral to the fistula. In the patient with the indirect fistula the changes were less marked. Conclusion: The ultrasound study was useful in the diagnosis of carotid cavernous fistulas, showing differences in the flow parameters that can be used to classify the fistulas.

19.
Rev. ecuat. neurol ; 26(3): 194-196, sep.-dic. 2017. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1003982

RESUMO

ABSTRACT Background: Diagnosis of silent lacunar infarcts is complicated in remote rural areas where MRI is not available. Hospital series have suggested an association between the pulsatility index of intracranial arteries - as assessed by transcranial Doppler - and some neuroimaging signatures of cerebral small vessel disease. We aimed to assess the reliability of cerebral pulsatility indices to identify candidates for MRI screening in population-based studies assessing prevalence of silent lacunar infarctions. Methods: A random sample of stroke-free Atahualpa residents aged ≥60 years investigated with MRI underwent transcranial Doppler for calculating the pulsatility index (PI) of the middle cerebral artery (MCA). For each person, mean PI was obtained by averaging both MCAs. Using conditional logistic regression for matched pairs data, we evaluated whether the pulsatility index of both MCAs correlate with silent lacunar infarcts. Results: Silent lacunar infarcts were noticed in 28 (12%) of 234 scanned persons. Six of them were excluded due to poor insonation through transtemporal windows. The remaining 22 participants were considered case-patients and were matched 1:1 with individuals free of infarcts (controls). Moderate-to-severe white matter hyperintensities were noticed in 12 (55%) case-patients and 7 (32%) controls (p=0.228). The mean MCA PI value in the 44 participants was 1.15 ± 0.21, with no difference found across case-patients and controls, after adjustment for white matter hyperintensities (β coefficient: 3.361, 95% C.I.: -0.693 to 7.417, p=0.104). Conclusions: Cerebral PI should not be used to identify candidates for MRI screening in population-based studies assessing the burden of silent lacunar infarcts.


RESUMEN Antecedentes: El diagnóstico de infartos lacunares silentes es complicado en áreas rurales donde no se dispone de IRM. Series hospitalarias han sugerido una asociación entre el índice de pulsatilidad (IP) de las arterias intracraneales -evaluadas mediante Doppler transcraneal- y algunas de las imágenes sugestivas de enfermedad cerebral de pequeños vasos. Nuestro objetivo fue evaluar la confiabilidad del IP para identificar candidatos para la práctica de IRM en estudios poblacionales que evalúen prevalencia de infartos lacunares. Métodos: Una muestra aleatoria de residentes de Atahualpa sin evidencia de ictus, con edad ≥60 años e investigados con IRM, fueron sometidos a Doppler transcraneal, para calcular el IP de las arterias cerebrales medias. El IP medio se obtuvo promediando el IP de ambas arterias cerebrales medias. Usando regresión logística condicional, se evaluó si el IP de las arterias cerebrales medias se correlacionó con la presencia de infartos lacunares. Resultados: Se detectaron infartos lacunares silentes en 28 (12%) de 234 personas exploradas. Seis de ellos fueron excluidos debido a mala insonancia a través de ventanas transtemporales. Los 22 participantes restantes se consideraron casos y se emparejaron 1: 1 con individuos libres de infartos (controles). Se observaron hiperintensidades de sustancia blanca de moderada a grave en 12 (55%) pacientes y 7 (32%) controles (p = 0.228). El valor medio de IP en los 44 participantes fue de 1,15 ± 0,21, sin diferencias entre pacientes y controles, después del ajuste para hiperintensidades de sustancia blanca (coeficiente β: 3,361, 95% C.I.: -0,693 a 7,417, p = 0,104). Conclusiones: El IP cerebral no se debe utilizar para identificar candidatos para el cribado de IRM en estudios poblacionales que evalúen la presencia de infartos lacunares silentes.

20.
Rev. ecuat. neurol ; 26(3): 306-309, sep.-dic. 2017. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1003999

RESUMO

Resumen Introducción: En pacientes con ictus isquémico criptogénico se ha descrito una alta prevalencia de alteraciones del septum auricular relacionadas con un riesgo aumentado de presentar recurrencia. Objetivo: Presentar la historia clínica de un paciente joven con antecedente de diabetes mellitus e ictus isquémico en el que no se demuestran alteraciones arteriales. A partir de la realización de un estudio de Doppler trasncraneal con test de burbujas se diagnostica un foramen oval permeable. Conclusión: En el paciente que describimos, la realización de un estudio de DTC como parte de la evaluación inicial ayudó a precisar la etiología. La demostración de un foramen ovale permeable tiene implicaciones en la prevención secundaria del ictus.


Abstract Introduction: A high prevalence of atrial septal defects is reported in patients with cryptogenic ischemic stroke, also related to an increase of the risk of recurrence. Objective: To report case of a young patient with a history of diabetes mellitus and ischemic stroke without arterial changes proven. A transcraneal Doppler study with a bubble test helped to diagnose a patent foramen ovale. Conclusion: As part of the initial evaluation of this patient, a TCD study has helped to clarify the stroke etiology. The demonstration of a patent foramen ovale has implications for the secondary prevention of stroke.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...