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1.
Ann Neurol ; 92(2): 184-194, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35599442

RESUMO

OBJECTIVE: To examine rates of intravenous thrombolysis (IVT), mechanical thrombectomy (MT), door-to-needle (DTN) time, door-to-puncture (DTP) time, and functional outcome between patients with admission magnetic resonance imaging (MRI) versus computed tomography (CT). METHODS: An observational cohort study of consecutive patients using a target trial design within the nationwide Swiss-Stroke-Registry from January 2014 to August 2020 was carried out. Exclusion criteria included MRI contraindications, transferred patients, and unstable or frail patients. Multilevel mixed-effects logistic regression with multiple imputation was used to calculate adjusted odds ratios with 95% confidence intervals for IVT, MT, DTN, DTP, and good functional outcome (mRS 0-2) at 90 days. RESULTS: Of the 11,049 patients included (mean [SD] age, 71 [15] years; 4,811 [44%] women; 69% ischemic stroke, 16% transient ischemic attack, 8% stroke mimics, 6% intracranial hemorrhage), 3,741 (34%) received MRI and 7,308 (66%) CT. Patients undergoing MRI had lower National Institutes of Health Stroke Scale (median [interquartile range] 2 [0-6] vs 4 [1-11]), and presented later after symptom onset (150 vs 123 min, p < 0.001). Admission MRI was associated with: lower adjusted odds of IVT (aOR 0.83, 0.73-0.96), but not with MT (aOR 1.11, 0.93-1.34); longer adjusted DTN (+22 min [13-30]), but not with longer DTP times; and higher adjusted odds of favorable outcome (aOR 1.54, 1.30-1.81). INTERPRETATION: We found an association of MRI with lower rates of IVT and a significant delay in DTN, but not in DTP and rates of MT. Given the delays in workflow metrics, prospective trials are required to show that tissue-based benefits of baseline MRI compensate for the temporal benefits of CT. ANN NEUROL 2022;92:184-194.


Assuntos
Isquemia Encefálica , Acidente Vascular Cerebral , Idoso , Isquemia Encefálica/complicações , Isquemia Encefálica/diagnóstico por imagem , Isquemia Encefálica/terapia , Feminino , Fibrinolíticos/uso terapêutico , Humanos , Imageamento por Ressonância Magnética , Masculino , Estudos Prospectivos , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/diagnóstico por imagem , Acidente Vascular Cerebral/terapia , Terapia Trombolítica/métodos , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Fluxo de Trabalho
2.
Rev Med Suisse ; 19(840): 1598-1604, 2023 Sep 06.
Artigo em Francês | MEDLINE | ID: mdl-37671760

RESUMO

Rapidly progressive dementia is distinguished from other neurocognitive disorders by its rapid onset (less than two years from first symptoms to diagnosis). It comprises a wide range of etiologies, including Creutzfledt-Jakob disease and Alzheimer's disease. When faced with a recent and rapid onset of major cognitive impairment, it is essential to rule out delirium or any other cause that may lead to rapid cognitive decline (such as stroke, encephalitis, or epileptic seizure). The work-up is based on a detailed history (drugs, exposure, medical history), a thorough clinical examination, and a broad biological work-up including MRI, lumbar puncture and EEG. Management should rapidly involve a neurologist or a specialized center.


Les démences rapidement progressives se distinguent des autres troubles neurocognitifs par leur rapidité d'installation, soit moins de deux ans entre les premiers symptômes et le diagnostic. Elles comprennent des étiologies très diverses, comme les maladies de Creutzfeldt-Jakob et d'Alzheimer. Face à un trouble cognitif rapidement progressif et récent, il est essentiel d'exclure un état confusionnel ou une autre cause pouvant mener à un déclin cognitif rapide (par exemple, AVC, encéphalite ou crise d'épilepsie). Le bilan repose sur une anamnèse étendue (médicaments, exposition, antécédents), un examen clinique complet et un panel d'examens paracliniques pouvant notamment comprendre une IRM, une ponction lombaire et un EEG. La prise en charge doit impérativement intégrer un neurologue ou un centre spécialisé.


Assuntos
Doença de Alzheimer , Disfunção Cognitiva , Demência , Médicos , Humanos , Transtornos Neurocognitivos
3.
Acta Haematol ; 144(1): 88-90, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32155618

RESUMO

Acquired hemophilia A (AHA) is a rare but serious condition, usually associated with significant spontaneous or traumatic bleeding and a high mortality rate. In this report, we describe the case of an elderly patient presenting a transient ischemic attack concurrently with AHA. A thrombotic event in AHA is occasionally associated with the use of bypassing agents for treatment, but a spontaneous thrombotic event has not ever been described.


Assuntos
Hemofilia A/diagnóstico , Ataque Isquêmico Transitório/diagnóstico , Idoso de 80 Anos ou mais , Biomarcadores , Coagulação Sanguínea , Testes de Coagulação Sanguínea , Diagnóstico Diferencial , Fator VIII/administração & dosagem , Fator VIII/uso terapêutico , Hemofilia A/etiologia , Hemofilia A/terapia , Humanos , Ataque Isquêmico Transitório/etiologia , Ataque Isquêmico Transitório/terapia , Masculino , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/uso terapêutico , Avaliação de Sintomas , Tomografia Computadorizada por Raios X , Resultado do Tratamento
4.
Rev Med Suisse ; 16(705): 1598-1604, 2020 Sep 09.
Artigo em Francês | MEDLINE | ID: mdl-32914590

RESUMO

Influenza A and B infections are marred with variable morbidity and, in some cases, develop into severe or even fatal respiratory, circulatory and neurologic complications. Respiratory complications are most common and involve primary-Influenza pneumonia and pneumonia from bacterial or fungal superinfections. Nonrespiratory complications can affect several organs/systems, namely the heart (myocarditis, type 1 and 2 myocardial infarction) and the nervous system (stroke, encephalitis, Guillain-Barré Syndrome). This article provides an overview of the basic pathophysiological aspects of Influenza virus infection, reviews the main severe respiratory and nonrespiratory complications and discusses the different treatments with their respective indications, contraindications and limitations.


L'infection par les virus de la grippe de types A et B (influenza A et B) est grevée d'une morbidité variable, pouvant évoluer en diverses complications respiratoires, circulatoires et neurologiques sévères, voire fatales. Les complications pulmonaires sont les plus fréquentes et l'on distingue parmi elles les pneumonies dues au virus de celles par surinfection bactérienne ou fongique. Les complications extrapulmonaires, plus rares, peuvent toucher divers organes, dont le cœur (myocardite, infarctus du myocarde de types 1 et 2) et le système nerveux (AVC, encéphalite, syndrome de Guillain-Barré). Cet article aborde les aspects physiopatho logiques de base de la grippe, passe en revue les principales complications sévères pulmonaires et extrapulmonaires, et discute les indications, contre-indications et limites des différents traitements disponibles.


Assuntos
Alphainfluenzavirus/patogenicidade , Betainfluenzavirus/patogenicidade , Cardiopatias/virologia , Influenza Humana/fisiopatologia , Influenza Humana/virologia , Doenças do Sistema Nervoso/virologia , Cardiopatias/fisiopatologia , Humanos , Doenças do Sistema Nervoso/fisiopatologia
5.
Stroke ; 45(12): 3561-6, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25370581

RESUMO

BACKGROUND AND PURPOSE: We investigated whether uptake of (18)fluoro-2-deoxy-d-glucose (18FDG) positron emission tomography-computed tomography (PET-CT) correlated to clinical symptoms and presence of microembolic signals (MES) detected by transcranial Doppler in patients with carotid stenosis. METHODS: 18FDG-PET-CT and MES detection was performed in consecutive patients with 50% to 99% symptomatic or asymptomatic carotid stenoses. Uptake index was defined by a target to background ratio (TBR) between maximum standardized uptake value of the carotid plaque and the mean standardized uptake value of the jugular veins. End points for analysis were presence of symptoms and presence of MES. RESULTS: We included 123 stenosis derived from 110 patients, 60 symptomatic and 63 asymptomatic. MES positive (+) lesions were found in 16%. TBR values were higher in symptomatic compared with asymptomatic (median 2.07 versus 1.78; P<0.0018) and in MES+ compared with MES- plaques (median 2.14 versus 1.86; P<0.008). TBR values were also higher in asymptomatic MES+ compared with MES- plaques (median 1.97 versus 1.76; P<0.03). The best TBR threshold value for symptomatic versus asymptomatic, for MES+ versus MES-, for symptomatic MES+ versus symptomatic or asymptomatic MES-, and for asymptomatic MES+ versus asymptomatic MES- plaques was 1.9. Sensitivity/specificity were, respectively, 56/77%, 73/63%, 79/64%, and 80/77%. We found a strong correlation between number of MES and TBR values (ρ 0.26; P=0.0043). CONCLUSIONS: 18FDG-PET-CT accurately detected high-risk carotid plaques. Also given its strong correlation to MES, 18FDG-PET-CT may be a useful tool in clinical practice.


Assuntos
Estenose das Carótidas/diagnóstico , Fluordesoxiglucose F18 , Embolia Intracraniana/diagnóstico , Imagem Multimodal/métodos , Compostos Radiofarmacêuticos , Idoso , Idoso de 80 Anos ou mais , Área Sob a Curva , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons , Curva ROC , Fatores de Risco , Sensibilidade e Especificidade , Tomografia Computadorizada por Raios X , Ultrassonografia Doppler Transcraniana
6.
J Stroke ; 24(2): 266-277, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35677981

RESUMO

BACKGROUND AND PURPOSE: Knowledge about different etiologies of non-traumatic intracerebral hemorrhage (ICH) and their outcomes is scarce. METHODS: We assessed prevalence of pre-specified ICH etiologies and their association with outcomes in consecutive ICH patients enrolled in the prospective Swiss Stroke Registry (2014 to 2019). RESULTS: We included 2,650 patients (mean±standard deviation age 72±14 years, 46.5% female, median National Institutes of Health Stroke Scale 8 [interquartile range, 3 to 15]). Etiology was as follows: hypertension, 1,238 (46.7%); unknown, 566 (21.4%); antithrombotic therapy, 227 (8.6%); cerebral amyloid angiopathy (CAA), 217 (8.2%); macrovascular cause, 128 (4.8%); other determined etiology, 274 patients (10.3%). At 3 months, 880 patients (33.2%) were functionally independent and 664 had died (25.1%). ICH due to hypertension had a higher odds of functional independence (adjusted odds ratio [aOR], 1.33; 95% confidence interval [CI], 1.00 to 1.77; P=0.05) and lower mortality (aOR, 0.64; 95% CI, 0.47 to 0.86; P=0.003). ICH due to antithrombotic therapy had higher mortality (aOR, 1.62; 95% CI, 1.01 to 2.61; P=0.045). Within 3 months, 4.2% of patients had cerebrovascular events. The rate of ischemic stroke was higher than that of recurrent ICH in all etiologies but CAA and unknown etiology. CAA had high odds of recurrent ICH (aOR, 3.38; 95% CI, 1.48 to 7.69; P=0.004) while the odds was lower in ICH due to hypertension (aOR, 0.42; 95% CI, 0.19 to 0.93; P=0.031). CONCLUSIONS: Although hypertension is the leading etiology of ICH, other etiologies are frequent. One-third of ICH patients are functionally independent at 3 months. Except for patients with presumed CAA, the risk of ischemic stroke within 3 months of ICH was higher than the risk of recurrent hemorrhage.

7.
Front Neurol ; 12: 589062, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33658973

RESUMO

Background: A fatal outcome occurs in 2% of patients with Reversible Cerebral Vasoconstriction Syndrome (RCVS). Due to its rarity, guidelines for the management of the most severe forms of RCVS are lacking. Case presentation: Here, we describe the case of a 55 year-old woman who died from complications of RCVS and reviewed patients with fatal outcome reported in the literature. In our patient, the first episode of neurological deterioration was preceded by an increase of cerebral blood flow velocities assessed with transcranial Doppler. A fatal evolution could not be prevented despite therapeutic escalation consisting of multiple non-invasive and invasive treatments including cervical sympathetic bloc and continuous arterial infusion of nimodipine at the site of severe vasoconstriction. Conclusion: This case and the review of literature illustrate the challenges in the management of patients with severe RCVS. We describe here how monitoring of cerebral blood flow might help anticipate clinical worsening at the beginning of the disease and propose novel invasive and non-invasive therapeutic strategies based on monitoring of neurophysiological parameters.

8.
BMJ ; 363: k5130, 2018 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-30563885

RESUMO

WHAT IS THE ROLE OF DUAL ANTIPLATELET THERAPY AFTER HIGH RISK TRANSIENT ISCHAEMIC ATTACK OR MINOR STROKE? SPECIFICALLY, DOES DUAL ANTIPLATELET THERAPY WITH A COMBINATION OF ASPIRIN AND CLOPIDOGREL LEAD TO A GREATER REDUCTION IN RECURRENT STROKE AND DEATH OVER THE USE OF ASPIRIN ALONE WHEN GIVEN IN THE FIRST 24 HOURS AFTER A HIGH RISK TRANSIENT ISCHAEMIC ATTACK OR MINOR ISCHAEMIC STROKE? AN EXPERT PANEL PRODUCED A STRONG RECOMMENDATION FOR INITIATING DUAL ANTIPLATELET THERAPY WITHIN 24 HOURS OF THE ONSET OF SYMPTOMS, AND FOR CONTINUING IT FOR 10-21 DAYS CURRENT PRACTICE IS TYPICALLY TO USE A SINGLE DRUG.


Assuntos
Aspirina/administração & dosagem , Isquemia Encefálica/tratamento farmacológico , Clopidogrel/administração & dosagem , Ataque Isquêmico Transitório/tratamento farmacológico , Inibidores da Agregação Plaquetária/administração & dosagem , Acidente Vascular Cerebral/tratamento farmacológico , Isquemia Encefálica/prevenção & controle , Humanos , Ataque Isquêmico Transitório/prevenção & controle , Guias de Prática Clínica como Assunto , Recidiva , Prevenção Secundária , Acidente Vascular Cerebral/prevenção & controle , Fatores de Tempo
9.
J Cardiovasc Surg (Torino) ; 57(2): 145-51, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26675835

RESUMO

As a stenosis becomes more severe, blood flow through it increases in velocity to maintain volume, flow and pressure. But there is a critical point beyond which further increase in stenosis no longer allows sufficient blood to pass through to maintain volumetric flow, and the carotid artery beyond the stenosis begins to decrease in diameter. This is the near occlusion. To maintain a sufficient blood flow in affected area, there is a progressive recruitment of collaterals followed by an activation of cerebral autoregulation with dilatation of resistance vessels. When this process fails to maintain normal cerebral blood flow, oxygen extraction fraction of the affected brain tissue increases to maintain normal cerebral metabolism. Near occlusion has been described as involving 1 to 10% of all severe stenosis, but the potential for stroke from such critical stenosis is less than its appearance would suggest. The optimum management of near-occlusion therefore remains a matter of debate. Although endarterectomy for carotid stenosis of 70-99% was associated with an absolute risk reduction in any stroke or death of 16% in the original randomized trials, the benefit was less in patients with near-occlusion. In 2015, a meta-analysis focused on patients with near-occlusion confirmed only a small benefit of carotid endarterectomy or stenting compared to medical treatment in patients with near occlusion. In patients with near-occlusion and compromised hemodynamics, revascularization should improve cerebral blood flow and consequently prevent ischemic stroke. Nevertheless the effect of improved cerebral hemodynamics after revascularization on prevention of ischemic stroke is uncertain.


Assuntos
Isquemia Encefálica , Artérias Carótidas/cirurgia , Estenose das Carótidas , Gerenciamento Clínico , Velocidade do Fluxo Sanguíneo , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/etiologia , Isquemia Encefálica/prevenção & controle , Artérias Carótidas/fisiopatologia , Estenose das Carótidas/complicações , Estenose das Carótidas/diagnóstico , Estenose das Carótidas/cirurgia , Angiografia Cerebral , Circulação Cerebrovascular , Endarterectomia das Carótidas , Humanos , Imageamento por Ressonância Magnética , Tomografia Computadorizada de Emissão de Fóton Único , Tomografia Computadorizada por Raios X , Ultrassonografia Doppler
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