Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Más filtros











Intervalo de año de publicación
1.
Int J Stroke ; 16(5): 593-601, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-32515694

RESUMEN

BACKGROUND: Some patients with ischemic stroke have poor outcomes despite small infarcts after endovascular thrombectomy, while others with large infarcts sometimes fare better. AIMS: We explored factors associated with such discrepancies between post-treatment infarct volume (PIV) and functional outcome. METHODS: We identified patients with small PIV (volume ≤ 25th percentile) and large PIV (volume ≥ 75th percentile) on 24-48-h CT/MRI in the ESCAPE randomized-controlled trial. Demographics, comorbidities, baseline, and 24-48-h stroke severity (NIHSS), stroke location, treatment type, post-stroke complications, and other outcome scales like Barthel Index, and EQ-5D were compared between "discrepant cases" - those with 90-day modified Rankin Scale(mRS) ≤ 2 despite large PIV or mRS ≥ 3 despite small PIV - and "non-discrepant cases". Multi-variable logistic regression was used to identify pre-treatment and post-treatment factors associated with small-PIV/mRS ≥ 3 and large-PIV/mRS ≤ 2. Sensitivity analyses used different definitions of small/large PIV and good/poor outcome. RESULTS: Among 315 patients, median PIV was 21 mL; 27/79 (34.2%) patients with PIV ≤ 7 mL (25th percentile) had mRS ≥ 3; 12/80 (15.0%) with PIV ≥ 72 mL (75th percentile) had mRS ≤ 2. Discrepant cases did not differ by CT versus MRI-based PIV ascertainment, or right versus left-hemisphere involvement (p = 0.39, p = 0.81, respectively, for PIV ≤ 7 mL/mRS ≥ 3). Pre-treatment factors independently associated with small-PIV/mRS ≥ 3 included older age (p = 0.010), cancer, and vascular risk-factors; post-treatment factors included 48-h NIHSS (p = 0.007) and post-stroke complications (p = 0.026). Absence of vascular risk-factors (p = 0.004), CT-based lentiform nucleus sparing (p = 0.002), lower 24-hour NIHSS (p = 0.001), and absence of complications (p = 0.013) were associated with large-PIV/mRS ≤ 2. Sensitivity analyses yielded similar results. CONCLUSIONS: Discrepancies between functional ability and PIV are likely explained by differences in age, comorbidities, and post-stroke complications, emphasizing the need for high-quality post-thrombectomy stroke care. CLINICAL TRIAL REGISTRATION: https://clinicaltrials.gov/ct2/show/NCT01778335.


Asunto(s)
Isquemia Encefálica , Accidente Cerebrovascular , Anciano , Isquemia Encefálica/complicaciones , Isquemia Encefálica/terapia , Humanos , Infarto , Factores de Riesgo , Accidente Cerebrovascular/diagnóstico por imagen , Accidente Cerebrovascular/terapia , Trombectomía , Resultado del Tratamiento
2.
Can J Neurol Sci ; 48(1): 77-86, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32684179

RESUMEN

OBJECTIVE: Decisions to treat large-vessel occlusion with endovascular therapy (EVT) or intravenous alteplase depend on how physicians weigh benefits against risks when considering patients' comorbidities. We explored EVT/alteplase decision-making by stroke experts in the setting of comorbidity/disability. METHODS: In an international multi-disciplinary survey, experts chose treatment approaches under current resources and under assumed ideal conditions for 10 of 22 randomly assigned case scenarios. Five included comorbidities (cancer, cardiac/respiratory/renal disease, mild cognitive impairment [MCI], physical dependence). We examined scenario/respondent characteristics associated with EVT/alteplase decisions using multivariable logistic regressions. RESULTS: Among 607 physicians (38 countries), EVT was chosen less often in comorbidity-related scenarios (79.6% under current resources, 82.7% assuming ideal conditions) versus six "level-1A" scenarios for which EVT/alteplase was clearly indicated by current guidelines (91.1% and 95.1%, respectively, odds ratio [OR] [current resources]: 0.38, 95% confidence interval 0.31-0.47). However, EVT was chosen more often in comorbidity-related scenarios compared to all other 17 scenarios (79.6% versus 74.4% under current resources, OR: 1.34, 1.17-1.54). Responses favoring alteplase for comorbidity-related scenarios (e.g. 75.0% under current resources) were comparable to level-1A scenarios (72.2%) and higher than all others (60.4%). No comorbidity independently diminished EVT odds when considering all scenarios. MCI and dependence carried higher alteplase odds; cancer and cardiac/respiratory/renal disease had lower odds. Being older/female carried lower EVT odds. Relevant respondent characteristics included performing more EVT cases/year (higher EVT-, lower alteplase odds), practicing in East Asia (higher EVT odds), and in interventional neuroradiology (lower alteplase odds vs neurology). CONCLUSION: Moderate-to-severe comorbidities did not consistently deter experts from EVT, suggesting equipoise about withholding EVT based on comorbidities. However, alteplase was often foregone when respondents chose EVT. Differences in decision-making by patient age/sex merit further study.


Asunto(s)
Isquemia Encefálica , Procedimientos Endovasculares , Accidente Cerebrovascular , Comorbilidad , Femenino , Humanos , Accidente Cerebrovascular/tratamiento farmacológico , Accidente Cerebrovascular/epidemiología , Activador de Tejido Plasminógeno/uso terapéutico
3.
Am J Case Rep ; 18: 1153-1156, 2017 Oct 31.
Artículo en Inglés | MEDLINE | ID: mdl-29084935

RESUMEN

BACKGROUND Carotid body tumors are rare tumors that arise from the paraganglionic cells of the carotid body. They are usually benign, requiring surgical resection as the treatment of choice. CASE REPORT We present a case of a 59-year-old man with a benign left carotid body tumor that progressed to a very large size, compromised the patient's airway, completely encased the carotid vessels, vagus and hypoglossal nerves ipsilaterally, and reached the contralateral carotid vessels and ipsilateral skull base. Because of the cranial extension of the tumor, the patient had to undergo preoperative endovascular coiling of the carotid vessels prior to total excision of the tumor. CONCLUSIONS Due to the critical location of carotid body tumors, their vascularity, and high risk of neurovascular complications, surgical resection can be quite challenging, especially when the tumor is large. We propose an approach to managing large parapharyngeal tumors by endovascular occlusion of the internal carotid artery above the skull base. Further, a suggestion is made to add a category to Shamblin's classification - Shamblin IV - for patients with skull base extension requiring preoperative endovascular intervention.


Asunto(s)
Tumor del Cuerpo Carotídeo/patología , Base del Cráneo/patología , Obstrucción de las Vías Aéreas/etiología , Obstrucción de las Vías Aéreas/terapia , Embolización Terapéutica , Humanos , Masculino , Persona de Mediana Edad , Invasividad Neoplásica
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA