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INTRODUCTION: We studied racial differences in post-stroke outcomes using a prospective, population-based cohort of stroke survivors as part of the Brain Attack Surveillance in Corpus Christi (BASIC) project. METHODS: Neurologic (NIHSS, range of 0-42, higher scores are worse), functional (ADLs/IADLs, range 1-4, higher scores are worse), and cognitive (3MSE, range 0-100, higher scores are better) outcomes were measured 90 days after stroke. Cox proportional hazards and negative binomial linear regression models were used to examine the associations between race and 90-day all-cause mortality and NIHSS, respectively, whereas linear regression was used for ADLs/IADLs and 3MSE scores. Covariates included demographics, initial NIHSS, comorbidities, prior stroke history, tPA treatment status, pre-stroke disability, and pre-stroke cognition. The mortality model was also adjusted for DNR status. RESULTS: At 90 days post-stroke, Black American individuals (BAs) (n = 122) had a median (IQR) NIHSS of 2 (1,6) compared to NIHSS of 1 (0,3) in non-Hispanic White American individuals (NHWs) (nâ¯=â¯795). BAs had a median (IQR) ADL/IADL score of 2.41 (1.50, 3.39) compared to 2.00 (1.27, 2.95) in NHWs. BAs scored a median of 84 (75, 92) on the 3MSE compared to NHWs' score of 91.5 (83, 96). Death occurred in 23 (8%) of BAs and 268 (15%) of NHWs within 90 days among those who participated in baseline. After adjustment for covariates, functional outcomes at 90 days were worse in BAs compared to NHWs, with 15.8% (95% CI=5.2, 26.4) greater limitations in ADLs/IADLs and 43.9% (95% CI=12.0, 84.9) greater severity of stroke symptoms. Cognition at 90 days was 6.5% (95% CI=2.4, 10.6) lower in BAs compared to NHWs. BAs had a 35.4% lower (95% CI=-9.8, 61.9) hazard rate of mortality than NHWs. CONCLUSIONS: In this prospective, population-based community sample, BAs had worse neurologic, functional and cognitive outcomes at 90 days compared to NHWs. Future research should investigate how social determinants of health including structural racism, neighborhood factors and access to preventive and recovery services influences these racial disparities.
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Accidente Cerebrovascular , Blanco , Humanos , Estados Unidos/epidemiología , Negro o Afroamericano , Estudios Prospectivos , Factores de Riesgo , Accidente Cerebrovascular/epidemiologíaRESUMEN
OBJECTIVE: To compare 18-year (2000-2017) temporal trends in ischemic stroke rates by ethnicity, sex, and age. METHODS: Data are from a population-based stroke surveillance study conducted in Nueces County, Texas, a geographically isolated, biethnic, urban community. Active (screening hospital admission logs, hospital wards, intensive care units) and passive (screening inpatient/emergency department discharge diagnosis codes) surveillance were used to identify cases aged ≥45 (n = 4,875) validated by stroke physicians using a consistent stroke definition over time. Ischemic stroke rates were derived from Poisson regression using annual population counts from the US Census to estimate the at-risk population. RESULTS: In those aged 45-59 years, rates increased in non-Hispanic Whites (104.3% relative increase; p < 0.001) but decreased in Mexican Americans (-21.9%; p = 0.03) such that rates were significantly higher in non-Hispanic Whites in 2016-2017 (p for ethnicity-time interaction < 0.001). In those age 60-74, rates declined in both groups but more so in Mexican Americans (non-Hispanic Whites -18.2%, p = 0.05; Mexican Americans -40.1%, p = 0.002), resulting in similar rates for the 2 groups in 2016-2017 (p for ethnicity-time interaction = 0.06). In those aged ≥75, trends did not vary by ethnicity, with declines noted in both groups (non-Hispanic Whites -33.7%, p = 0.002; Mexican Americans -26.9%, p = 0.02). Decreases in rates were observed in men (age 60-74, -25.7%, p = 0.009; age ≥75, -39.2%, p = 0.002) and women (age 60-74, -34.3%, p = 0.007; age ≥75, -24.0%, p = 0.02) in the 2 older age groups, while rates did not change in either sex in those age 45-59. CONCLUSION: Previously documented ethnic stroke incidence disparities have ended as a result of declining rates in Mexican Americans and increasing rates in non-Hispanic Whites, most notably in midlife.
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Accidente Cerebrovascular Isquémico , Accidente Cerebrovascular , Anciano , Encéfalo , Etnicidad , Femenino , Humanos , Masculino , Americanos Mexicanos , Persona de Mediana Edad , Accidente Cerebrovascular/diagnóstico , Texas/epidemiologíaRESUMEN
OBJECTIVES: We explored how the new, tissue-based stroke definition impacted incidence estimates, including an ethnic comparison, in a population-based study. METHODS: Stroke patients, May, 2014-May, 2016 in Nueces County, Texas were ascertained and validated using source documentation. Overall, ethnic-specific and age-specific Poisson regression models were used to compare first-ever ischemic stroke and intracerebral hemorrhage (ICH) incidence between old and new stroke definitions, adjusting for age, ethnicity, sex, and National Institutes of Health Stroke Scale score. RESULTS: Among 1308 subjects, 1245 (95%) were defined as stroke by the old definition and 63 additional cases (5%) according to the new. There were 12 cases of parenchymal hematoma (PH1 or PH2) that were reclassified from ischemic stroke to ICH. Overall, incidence of ischemic stroke was slightly higher under the new compared to the old definition (RR 1.07; 95% CI 0.99-1.16); similarly higher in both Mexican Americans (RR 1.06; 95% CI 1.00-1.12) and Non Hispanic whites (RR 1.09, 95% CI 0.97-1.22), p(ethnic difference)=0.36. Overall, incidence of ICH was higher under the new definition compared to old definition (RR 1.16; 95% CI 1.05-1.29), similarly higher among both Mexican Americans (RR 1.14; 95% CI 1.06-1.23) and Non Hispanic whites (RR 1.20, 95% CI 1.03-1.39), p(ethnic difference)=0.25. CONCLUSION: Modest increases in ischemic stroke and ICH incidence occurred using the new compared with old stroke definition. There were no differences between Mexican Americans and non Hispanic whites. These estimates provide stroke burden estimates for public health planning.
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Accidente Cerebrovascular Hemorrágico/etnología , Accidente Cerebrovascular Isquémico/etnología , Americanos Mexicanos , Terminología como Asunto , Población Blanca , Anciano , Femenino , Necesidades y Demandas de Servicios de Salud , Accidente Cerebrovascular Hemorrágico/clasificación , Accidente Cerebrovascular Hemorrágico/diagnóstico , Humanos , Incidencia , Accidente Cerebrovascular Isquémico/clasificación , Accidente Cerebrovascular Isquémico/diagnóstico , Masculino , Persona de Mediana Edad , Evaluación de Necesidades , Factores Raciales , Medición de Riesgo , Factores de Riesgo , Texas/epidemiologíaRESUMEN
Mexican Americans (MAs) have been shown to have worse outcomes after stroke than non-Hispanic Whites (NHWs), but it is unknown if ethnic differences in stroke quality of care may contribute to these worse outcomes. We investigated ethnic differences in the quality of inpatient stroke care between MAs and NHWs within the population-based prospective Brain Attack Surveillance in Corpus Christi (BASIC) Project (February 2009- June 2012). Quality measures for inpatient stroke care, based on the 2008 Joint Commission Primary Stroke Center definitions were assessed from the medical record by a trained abstractor. Two summary measure of overall quality were also created (binary measure of defect-free care and the proportion of measures achieved for which the patient was eligible). 757 individuals were included (480 MAs and 277 NHWs). MAs were younger, more likely to have hypertension and diabetes, and less likely to have atrial fibrillation than NHWs. MAs were less likely than NHWs to receive tPA (RR: 0.72, 95% confidence interval (CI) 0.52, 0.98), and MAs with atrial fibrillation were less likely to receive anticoagulant medications at discharge than NHWs (RR 0.73, 95% CI 0.58, 0.94). There were no ethnic differences in the other individual quality measures, or in the two summary measures assessing overall quality. In conclusion, there were no ethnic differences in the overall quality of stroke care between MAs and NHWs, though ethnic differences were seen in the proportion of patients who received tPA and anticoagulant at discharge for atrial fibrillation.
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BACKGROUND AND PURPOSE: Poststroke functional outcome is critical to stroke survivors. We sought to determine whether adherence to current stroke performance measures is associated with better functional outcome 90 days after an ischemic stroke. METHODS: Utilizing the Brain Attack Surveillance in Corpus Christi cohort, we examined adherence to 7 ischemic stroke performance measures from February 2009 to June 2012. Adherence to the measures was analyzed in aggregate using a binary defect-free score and an opportunity score, representing the proportion of eligible measures met. The opportunity score ranges from 0 to 1, with values closer to 1 implying better adherence. Functional outcome, defined by an activities of daily living and instrumental activities of daily living (ADL/IADL) score (range 1-4, higher scores worse), was ascertained at 90 days poststroke. Tobit regression models were fitted to examine the associations between the performance measures and functional outcome, adjusting for demographic and clinical characteristics, including stroke severity. RESULTS: There were 565 patients with ischemic stroke included in the analysis. The median ADL/IADL score was 2.32 (interquartile range [IQR]: 1.41-3.41). The median opportunity score was 1 (IQR: 0.8-1), and 58.4% of the patients received defect-free care. After adjustment, the opportunity score (P = .67) and defect-free care (P = .92) were not associated with functional outcome. CONCLUSION: In this population, adherence to a composite of current stroke performance measures was not associated with poststroke functional outcome after adjustment for other factors. Performance measures that are associated with improved functional outcome should be developed and incorporated into stroke quality measures.
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BACKGROUND: Studies have suggested that women may receive lower stroke quality of care (QOC) than men, although population-based studies at nonacademic centers are limited. We investigated sex disparities in stroke QOC in the Brain Attack Surveillance in Corpus Christi Project. METHODS: All ischemic stroke patients admitted to 1 of 6 Nueces County nonacademic hospitals between February 2009 and June 2012 were prospectively identified. Data regarding compliance with 7 performance measures (PMs) were extracted from the medical records. Two overall quality metrics were calculated: a composite score of QOC representing the number of achieved PMs over all patient-appropriate PMs, and a binary measure of defect-free care. Multivariable models with generalized estimating equations assessed the association between sex and individual PMs and between sex and overall quality metrics. RESULTS: A total of 757 patients (51.6% female) were included in our analysis. After adjustment, women were less likely to receive deep vein thrombosis prophylaxis at 48 hours (relative risk [RR] = .945; 95% CI, .896-.996), an antithrombotic by 48 hours (RR = .952; 95% CI, .939-.965), and to be discharged on an antithrombotic (RR = .953; 95% CI, .925-.982). Women had a lower composite score (mean difference -.030, 95% CI -.057 to -.003) and were less likely to receive defect-free care than men (RR = .914; 95% CI, .843-.991). CONCLUSIONS: Women had lower overall stroke QOC than men, although absolute differences in most individual PMs were small. Further investigation into the factors contributing to the sex disparity in guideline-concordant stroke care should be pursued.
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Isquemia Encefálica/terapia , Servicios de Salud Comunitaria/normas , Disparidades en Atención de Salud/normas , Evaluación de Procesos, Atención de Salud/normas , Indicadores de Calidad de la Atención de Salud/normas , Accidente Cerebrovascular/terapia , Anciano , Anciano de 80 o más Años , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/fisiopatología , Femenino , Fibrinolíticos/administración & dosificación , Adhesión a Directriz/normas , Humanos , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Alta del Paciente/normas , Guías de Práctica Clínica como Asunto/normas , Pautas de la Práctica en Medicina/normas , Estudios Prospectivos , Medición de Riesgo , Factores de Riesgo , Factores Sexuales , Accidente Cerebrovascular/diagnóstico , Accidente Cerebrovascular/fisiopatología , Texas , Resultado del Tratamiento , Trombosis de la Vena/prevención & controlRESUMEN
BACKGROUND AND PURPOSE: Studies have established a relation between recanalization and improved clinical outcome in acute ischemic stroke patients; however, intra-arterial clot size has not been routinely assessed. The aim of the study was to determine the impact of intra-arterial thrombus burden on intra-arterial treatment (IAT) and clinical outcome. METHODS: A retrospective review of our IAT stroke database included procedure time, recanalization, symptomatic intracranial hemorrhage, poor outcome (modified Rankin Scale score >/=4 at discharge), and mortality. The modified Thrombolysis in Myocardial Infarction thrombus grade was dichotomized into grades 0 to 3 (no clot or moderate thrombus, <2 vessel diameters) versus grade 4 (large thrombus, >2 vessel diameters). RESULTS: Data were collected on 135 patients with thrombus grading. The baseline median National Institutes of Health Stroke Scale score was higher in patients of grade 4 compared with grades 0 to 3 (19 vs 17, P=0.012). Grade 4 thrombi required longer (median, range) times for IAT (113, 37 to 415 minutes vs 74, 22 to 215 minutes, respectively; P<0.001) and higher rates of mechanical clot disruption (wire, angioplasty, snare, stent, or Merci retriever) compared with grades 0 to 3 (76% vs 53%, P=0.005). There were no differences in rates of symptomatic intracranial hemorrhage (6.6% vs 4.1%, P=0.701) or recanalization (50% vs 61%, P=0.216) in grade 4 versus grades 0 to 3. Multivariate analysis adjusted for age, baseline National Institutes of Health Stroke Scale score, and artery of involvement showed that grade 4 thrombi were independently associated with poor outcome (odds ratio=2.4; 95% CI, 1.06 to 5.57; P=0.036) and mortality (odds ratio=4.0; 95% CI, 1.2 to 13.2; P=0.023). CONCLUSIONS: High thrombus grade as measured by the modified Thrombolysis in Myocardial Infarction criteria may be a risk factor that contributes to poor clinical outcome.
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Angioplastia , Isquemia Encefálica/patología , Trombosis Intracraneal/cirugía , Anciano , Angioplastia/instrumentación , Angioplastia/métodos , Angioplastia/estadística & datos numéricos , Daño Encefálico Crónico/epidemiología , Daño Encefálico Crónico/etiología , Daño Encefálico Crónico/prevención & control , Isquemia Encefálica/etiología , Angiografía Cerebral , Hemorragia Cerebral/inducido químicamente , Hemorragia Cerebral/epidemiología , Terapia Combinada , Femenino , Fibrinolíticos/administración & dosificación , Fibrinolíticos/efectos adversos , Fibrinolíticos/uso terapéutico , Humanos , Infusiones Intraarteriales , Trombosis Intracraneal/complicaciones , Trombosis Intracraneal/diagnóstico por imagen , Trombosis Intracraneal/tratamiento farmacológico , Trombosis Intracraneal/patología , Masculino , Persona de Mediana Edad , Reperfusión , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Stents , Terapia Trombolítica/efectos adversos , Terapia Trombolítica/estadística & datos numéricos , Resultado del TratamientoRESUMEN
BACKGROUND AND PURPOSE: The optimal approach for acute ischemic stroke patients who do not respond to intravenous recombinant tissue plasminogen activator (IV rt-PA) is uncertain. This study evaluated the safety and response to intra-arterial thrombolytics (IATs) in patients unresponsive to full-dose IV rt-PA. METHODS: A case series from a prospectively collected database on consecutive acute ischemic stroke patients treated with IATs after 0.9 mg/kg IV rt-PA during a 7-year interval was collected. Primary outcome measures included symptomatic intracranial hemorrhage and mortality. As indicators of response, secondary outcome measures were recanalization and discharge disposition. RESULTS: Sixty-nine patients (mean+/-SD age, 60+/-13 years; range, 26 to 85 years; 55% male) with a median pretreatment National Institutes of Health Stroke Scale score of 18 (range, 6 to 39) were included. IV rt-PA was started at 124+/-32 minutes (median, 120 minutes) and IAT, at 288+/-57 minutes (median, 285 minutes). IATs consisted of reteplase (n=56), alteplase (n=7), and urokinase (n=6), with an average total dosage of 2.8 U, 8.6 mg, and 700 000 U, respectively. Symptomatic intracranial hemorrhage occurred in 4 of 69 (5.8%) patients; 3 cases were fatal. Recanalization was achieved in 50 (72.5%) and a favorable outcome (home or inpatient rehabilitation) in 38 (55%). CONCLUSIONS: IAT therapy after full-dose IV rt-PA in patients with persisting occlusion and/or lack of clinical improvement appears safe compared with IV rt-PA alone or low-dose IV rt-PA followed by IAT. A high rate of recanalization and favorable outcome can be achieved.
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Isquemia Encefálica/tratamiento farmacológico , Fibrinolíticos/efectos adversos , Accidente Cerebrovascular/tratamiento farmacológico , Activador de Tejido Plasminógeno/efectos adversos , Enfermedad Aguda/terapia , Adulto , Anciano , Anciano de 80 o más Años , Relación Dosis-Respuesta a Droga , Femenino , Fibrinolíticos/administración & dosificación , Humanos , Inyecciones Intraarteriales/efectos adversos , Inyecciones Intravenosas/efectos adversos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Proteínas Recombinantes de Fusión/efectos adversos , Proteínas Recombinantes/administración & dosificación , Proteínas Recombinantes/efectos adversos , Activador de Tejido Plasminógeno/administración & dosificación , Activador de Plasminógeno de Tipo Uroquinasa/administración & dosificación , Activador de Plasminógeno de Tipo Uroquinasa/efectos adversosRESUMEN
BACKGROUND: The newly developed multi-frequency transcranial Doppler (TCD) is able to differentiate gaseous from solid emboli. Our goal was to apply this technology to initially characterize emboli detected during carotid stenting with distal protection. METHODS: Patients undergoing carotid angiography and stenting were monitored with 2-2.5 MHz TCD (Embo-Dop, DWL) over the middle cerebral artery unilateral to stent deployment. Sonographers insured optimal signal recordings during the procedures. Automated emboli detection and classification software (MultiXLab version 2.0) was applied for offline count and analysis. Monitoring using the Filter Wire EX (Boston Scientific) and ACCUNET system (Guidant Corporation) was performed. RESULTS: A total of 9,649 embolic signals were detected during 11 angiographic and 10 stenting procedures. An observer confirmed the signals using the International Consensus definition. Automated software classified these events into 5,900 gaseous and 3,749 solid emboli. During contrast injections without the protection device, 1,013 emboli were detected with 28% of these being solid. With deployment of the distal protection device, 8,636 emboli were found with 40% being solid (p < 0.001). During stenting and angioplasty with the protection device, 7,395 emboli with 42% solids were detected (p < 0.001). Finally injection of contrast after the procedure, with the protection device still deployed, yielded 1,241 emboli with 31% solids (NS). Only 1 patient developed transient hemiparesthesia during ballooning that reduced the flow velocity to zero for 14 s. Neither gaseous nor solid emboli resulted in a mean flow velocity decrease or clinical symptoms. CONCLUSIONS: Microembolization frequently occurs during stenting even with deployment of the distal protection device. More solid emboli are seen during manipulations associated with lesion crossing. Although novel TCD methods yield a high frequency of embolic signals, further validation of this technique to determine the true nature, size, and number of emboli is needed.
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Angioplastia Coronaria con Balón , Estenosis Carotídea/terapia , Embolia/diagnóstico por imagen , Stents , Ultrasonografía Doppler Transcraneal/métodos , Anciano , Anciano de 80 o más Años , Angioplastia Coronaria con Balón/efectos adversos , Estenosis Carotídea/diagnóstico por imagen , Angiografía Cerebral , Embolia/etiología , Embolia Aérea/diagnóstico por imagen , Embolia Aérea/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Stents/efectos adversos , Filtros de Vena CavaRESUMEN
BACKGROUND AND PURPOSE: We routinely perform an urgent bedside neurovascular ultrasound examination (NVUE) with carotid/vertebral duplex and transcranial Doppler (TCD) in patients with acute cerebral ischemia. We aimed to determine the yield and accuracy of NVUE to identify lesions amenable for interventional treatment (LAITs). METHODS: NVUE was performed with portable carotid duplex and TCD using standardized fast-track (<15 minutes) insonation protocols. Digital subtraction angiography (DSA) was the gold standard for identifying LAIT. These lesions were defined as proximal intra- or extracranial occlusions, near-occlusions, > or =50% stenoses or thrombus in the symptomatic artery. RESULTS: One hundred and fifty patients (70 women, mean age 66+/-15 years) underwent NVUE at median 128 minutes after symptom onset. Fifty-four patients (36%) received intravenous or intra-arterial thrombolysis (median National Institutes of Health Stroke Scale (NIHSS) score 14, range 4 to 29; 81% had NIHSS > or =10 points). NVUE demonstrated LAITs in 98% of patients eligible for thrombolysis, 76% of acute stroke patients ineligible for thrombolysis (n=63), and 42% in patients with transient ischemic attack (n=33), P<0.001. Urgent DSA was performed in 30 patients on average 230 minutes after NVUE. Compared with DSA, NVUE predicted LAIT presence with 100% sensitivity and 100% specificity, although individual accuracy parameters for TCD and carotid duplex specific to occlusion location ranged 75% to 96% because of the presence of tandem lesions and 10% rate of no temporal windows. CONCLUSIONS: Bedside neurovascular ultrasound examination, combining carotid/vertebral duplex with TCD yields a substantial proportion of LAITs in excellent agreement with urgent DSA.
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Isquemia Encefálica/diagnóstico por imagen , Arterias Carótidas/diagnóstico por imagen , Ultrasonografía Doppler Dúplex , Ultrasonografía Doppler Transcraneal , Enfermedad Aguda , Anciano , Angiografía de Substracción Digital , Estenosis Carotídea/diagnóstico por imagen , Femenino , Humanos , Enfermedades Arteriales Intracraneales/diagnóstico por imagen , Masculino , Sistemas de Atención de Punto , Reproducibilidad de los ResultadosRESUMEN
BACKGROUND AND PURPOSE: This study evaluated the safety and efficacy of aggressive mechanical clot disruption (AMCD) in acute stroke patients with persisting middle cerebral artery (MCA) or internal carotid artery (ICA) occlusion after thrombolytic therapy. METHODS: Retrospective case series were used from a prospectively collected stroke database on consecutive acute ischemic stroke patients treated with intra-arterial (IA) thrombolytics and mechanical clot disruption during a 5-year interval. Thrombolytic dosage, endovascular techniques, immediate and final recanalization rates, symptomatic hemorrhage, mortality, and outcome were determined. RESULTS: Thirty-two patients received AMCD. Median baseline National Institutes of Health Stroke Scale (NIHSS) score was 18, and median time to initiation of IA treatment was 261 minutes from symptom onset. ICA occlusion was noted in 16 patients and MCA occlusion in 16 patients: 22 received combined IV/IA thrombolytics, 3 received IV thrombolytics, 6 received IA thrombolytics, and 1 patient received no thrombolytics before AMCD. No immediate periprocedural complications were noted. Immediate recanalization was achieved in 38% (50% MCA, 25% ICA) and final recanalization in 75% (88% MCA, 63% ICA) of patients. Favorable outcome occurred in 19 (59%) patients, symptomatic cerebral hemorrhage in 3 (9.4%) patients, and mortality in 4 (12.5%) patients. CONCLUSIONS: AMCD can be performed safely with comparable intracerebral hemorrhage and mortality rates to other IA therapies even after use of intravenous thrombolytics in selected patients. Early deployment of this technique leads to immediate recanalization in one third of patients. AMCD may potentially shorten the time to flow restoration and improve overall recanalization rates achieved with IA therapy.
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Arteria Carótida Interna/patología , Estenosis Carotídea/terapia , Cateterismo/métodos , Infarto de la Arteria Cerebral Media/terapia , Accidente Cerebrovascular/terapia , Terapia Trombolítica/métodos , Adulto , Anciano , Cateterismo/instrumentación , Bases de Datos como Asunto , Femenino , Hemorragia/patología , Humanos , Persona de Mediana Edad , Perfusión , Estudios Retrospectivos , Factores de Tiempo , Activador de Tejido Plasminógeno/metabolismo , Resultado del TratamientoRESUMEN
Acute embolic occlusion of the intracranial internal carotid bifurcation is associated with a poor prognosis. Recanalization rates of this lesion with intravenous or intraarterial thrombolysis are exceedingly low. We describe the use of balloon angioplasty after failed thrombolysis to achieve immediate recanalization of acute carotid T occlusions in two patients. At 1-month follow-up, both patients were alive with neurologic deficits. For acute carotid T occlusion, balloon angioplasty should be considered a first-line endovascular therapy.