Transcranial Doppler
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Follow-up of children with sickle cell anemia screened with transcranial Doppler and enrolled in a primary prevention program of ischemic stroke
ABSTRACT Background: Stroke is a serious complication of sickle cell anemia (SCA). The transcranial Doppler (TCD) is the risk-screening tool for ischemic strokes. The objective of the study was to describe the clinical progression of children with SCA who presented with high risk for stroke by TCD or relevant changes by magnetic resonance angiography (MRA)
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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2. Evaluation of cerebral hemodynamics by transcranial Doppler ultrasonography and its correlation with intracranial pressure in an animal model of intracranial hypertension
RESUMO Antecedentes: O Doppler transcraniano (DTC) é uma técnica não invasiva para a avaliação da hemodinâmica cerebral, porém existem controvérsias na literatura sobre sua aplicabilidade preditiva em situações de elevada pressão intracraniana (PIC). Objetivo: Investigar o fluxo sanguíneo cerebral pelo DTC e correlacioná-lo com as variaçõe
Arquivos de Neuro-Psiquiatria. Publicado em: 2022
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3. Evaluation of cerebral hemodynamic status in patients with unilateral symptomatic carotid artery stenosis during motor tasks, through use of transcranial Doppler sonography
RESUMO Antecedentes: A estenose da artéria carótida aumenta o risco de evento isquêmico cerebral por meio da alteração de diferentes parâmetros hemodinâmicos cerebrais. Objetivo: Investigar como a hemodinâmica cerebral no segmento M1 da artéria cerebral média se altera em pacientes com estenose da artéria carótida, após tarefas motoras com ultra
Arquivos de Neuro-Psiquiatria. Publicado em: 2022
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4. Chronic transfusion therapy effectiveness as primary stroke prophylaxis in sickle cell disease patients
Abstract Introduction About 10% of sickle cell anemia patients will have ischemic stroke. Adams showed stroke incidence reduction in children receiving monthly erythrocyte transfusions by reducing transcranial Doppler (TCD) velocities. Since then, chronic transfusion is recommended as primary stroke prophylaxis. This study aims to assess the effectiveness o
Hematol., Transfus. Cell Ther.. Publicado em: 2020-03
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5. Magnetic resonance angiography and transcranial Doppler ultrasound findings in patients with a clinical diagnosis of vertebrobasilar insufficiency
OBJECTIVE: To evaluate the findings of magnetic resonance angiography (MRA) and transcranial Doppler ultrasound (TCD) in patients with a clinical diagnosis of vertebrobasilar insufficiency (VBI). METHOD: From our outpatient neurotology clinic, we selected patients (using the criteria proposed by Grad and Baloh) with a clinical diagnosis of VBI. We excluded
Clinics. Publicado em: 20/01/2020
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6. Research progress in ultrasound use for the diagnosis and treatment of cerebrovascular diseases
Cerebrovascular diseases pose a serious threat to human survival and quality of life and represent a major cause of human death and disability. Recently, the incidence of cerebrovascular diseases has increased yearly. Rapid and accurate diagnosis and evaluation of cerebrovascular diseases are of great importance to reduce the incidence, morbidity and mortali
Clinics. Publicado em: 11/03/2019
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7. Genetic, laboratory and clinical risk factors in the development of overt ischemic stroke in children with sickle cell disease
ABSTRACT Cerebrovascular disease, particularly stroke, is one of the most severe clinical complications associated with sickle cell disease and is a significant cause of morbidity in both children and adults. Over the past two decades, considerable advances have been made in the understanding of its natural history and enabled early identification and treatm
Hematol., Transfus. Cell Ther.. Publicado em: 2018-06
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8. Pathophysiology and Diagnosis of Vertebrobasilar Insufficiency: A Review of the Literature
Abstract Introduction Vertebrobasilar insufficiency is defined as transitory ischemia of the vertebrobasilar circulation. Dizziness, vertigo, headaches, vomit, diplopia, blindness, ataxia, imbalance, and weakness in both sides of the body are the most common symptoms. Objective To review the literature regarding the three available diagnostic testing in
Int. Arch. Otorhinolaryngol.. Publicado em: 2017-09
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9. Interleukin-10 haplotypes are not associated with acute cerebral ischemia or high-risk transcranial Doppler in a newborn cohort of 395 children with sickle cell anemia
ABSTRACT Background: The etiology of stroke, a severe complication of sickle cell anemia, involves inflammatory processes. However, the pathogenetic mechanisms are unknown. The aim of this study was to evaluate the influence of interleukin-10 polymorphisms and haplotypes on the risk of acute cerebral ischemia and high-risk transcranial Doppler in 395 childr
Rev. Bras. Hematol. Hemoter.. Publicado em: 2017-06
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10. Cerebral vasomotor reactivity assessment using Transcranial Doppler and MRI with apnea test
Differently from previous studies that used Transcranial Doppler (TCD) and functional MRI (fMRI) for cerebral vasomotor reactivity (CVR) assessment in patients with carotid stenosis (CS), we assessed CVR using an identical stimulus, the Breath-Holding Test (BHT). We included 15 patients with CS and 7 age-matched controls to verify whether fMRI responded diff
Braz J Med Biol Res. Publicado em: 24/10/2016
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11. Clinical, hematological and genetic data of a cohort of children with hemoglobin SD
ABSTRACT INTRODUCTION: The hemoglobin FSD is very uncommon in newborn screening programs for sickle cell disease. In the program of Minas Gerais, Brazil, the clinical course of children with hemoglobin SD was observed to be heterogeneous. The objective of this study was to estimate the incidence (1999-2012) and to describe the natural history of a cohort o
Rev. Bras. Hematol. Hemoter.. Publicado em: 2016-09
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12. Hemodynamic effects of mannitol infusion in patients with acute intracerebral hemorrhage
PURPOSE: To evaluate hemodynamic effects of mannitol infusion in patients with acute intracerebral hemorrhage. METHODS: Thirty patients with acute intracerebral hemorrhage were enrolled. Transcranial doppler was used to detect variables of bilateral middle cerebral arteria (MCA) including mean velocity (Vm) and pulsitility index (PI) before and after125ml an
Acta Cir. Bras.. Publicado em: 2013-02