RESUMEN
SUMMARY: The aim of this study was to compare the clinical value of vertebral artery ultrasound (VAU), Magnetic Resonance Angiography (MRA) and Digital Subtraction Angiography (DSA) on vertebral artery stenosis in patients with posterior circulation ischemia. Seventy-three patients with posterior circulation ischemia underwent vertebral artery ultrasound and magnetic resonance angiography as well as digital subtraction angiography, and the diagnosis of vertebral artery stenosis (VAS) and the degree of stenosis (normal, mild stenosis, moderate stenosis, severe stenosis, and occlusion) were recorded and compared between digital subtraction angiogram and vertebral artery ultrasound and magnetic resonance angiography. The vertebral artery stenosis rates on digital subtraction angiography and vertebral artery ultrasound were 87.30 % (55/63) and 49.20 % (31/63), respectively, and the difference was statistically significant. The rates of vertebral artery stenosis on digital subtraction angiography and, magnetic resonance angiography was 90.38 % (47/52) and 88.46 % (46/ 52), respectively, and the differences was not statistically significant. The sensitivity, accuracy, negative predictive value, and positive predictive value of vertebral artery ultrasound in diagnosing vertebral artery stenosis were 51.35 %, 54.76 %, 18.18 %, and 95.00 %, respectively, lower than those of magnetic resonance angiography, which were 91.89 %, 90.48 %, 57.14 %, and 97.14 %, respectively. Of the noninvasive imaging techniques, vertebral artery ultrasound does not accurately characterize vertebral artery stenosis and its degree of stenosis. Magnetic resonance angiography effectively screens for vertebral artery stenosis and its degree of stenosis, and can be used as a reliable tool for vertebral artery stenosis in posterior circulation cerebral infarction, and can be used in conjunction with digital subtraction angiogram in order to improve diagnostic convenience and accuracy.
El objetivo de este estudio fue comparar el valor clínico de la ecografía de la arteria vertebral (VAU), la angiografía por resonancia magnética (ARM) y la angiografía por sustracción digital (DSA) en la estenosis de la arteria vertebral en pacientes con isquemia de la circulación posterior. A 73 pacientes con isquemia de la circulación posterior se les realizó una ecografía de la arteria vertebral y una angiografía por resonancia magnética, así como una angiografía por sustracción digital, y se les diagnosticó estenosis de la arteria vertebral (EVA) y el grado de estenosis (normal, estenosis leve, estenosis moderada, estenosis grave, y oclusión) se registraron y compararon la angiografía por sustracción digital y la ecografía de la arteria vertebral y la angiografía por resonancia magnética. Las tasas de estenosis de la arteria vertebral en la angiografía por sustracción digital y la ecografía de la arteria vertebral fueron del 87,30 % (55/63) y del 49,20 % (31/63), respectivamente, y la diferencia fue estadísticamente significativa. Las tasas de estenosis de la arteria vertebral en la angiografía por sustracción digital y la angiografía por resonancia magnética fueron del 90,38 % (47/52) y del 88,46 % (46/52), respectivamente, y las diferencias no fueron estadísticamente significativas. La sensibilidad, precisión, valor predictivo negativo y valor predictivo positivo de la ecografía de la arteria vertebral en el diagnóstico de estenosis de la arteria vertebral fueron 51,35 %, 54,76 %, 18,18 % y 95,00 %, respectivamente, inferiores a los de la angiografía por resonancia magnética, que fueron 91,89 %, 90,48 %, 57,14 % y 97,14 %, respectivamente. De las técnicas de imagen no invasivas, la ecografía de la arteria vertebral no caracteriza con precisión la estenosis de la arteria vertebral y su grado de estenosis. La angiografía por resonancia magnética detecta eficazmente la estenosis de la arteria vertebral y su grado de estenosis, y puede usarse como una herramienta confiable para la estenosis de la arteria vertebral en el infarto cerebral de circulación posterior, y puede ser utilizada junto con la angiografía por sustracción digital para mejorar el diagnóstico y la exactitud.
Asunto(s)
Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Insuficiencia Vertebrobasilar/diagnóstico por imagen , Angiografía de Substracción Digital , Ultrasonografía , Angiografía por Resonancia Magnética , Valor Predictivo de las Pruebas , Sensibilidad y EspecificidadRESUMEN
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 patients with any definite cause for vestibular symptoms, a noncontrolled metabolic disease or any contraindication to MRA or TCD. The patients in the study group were sex- and age-matched with subjects who did not have vestibular symptoms (control group). Our final group of patients included 24 patients (study, n=12; control, n=12). RESULTS: The MRA results did not demonstrate significant differences in the findings between our study and control groups. TCD demonstrated that the systolic pulse velocity of the right middle cerebral artery, end diastolic velocity of the basilar artery, pulsatility index (PI) of the left middle cerebral artery, PI of the right middle cerebral artery, and PI of the basilar artery were significantly higher in the study group than in the control group, suggesting abnormalities affecting the microcirculation of patients with a clinical diagnosis of VBI compared with controls. CONCLUSION: MRA failed to reveal abnormalities in patients with a clinical diagnosis of VBI compared with controls. The PI of the basilar artery, measured using TCD, demonstrated high sensitivity (91%) and specificity (91%) for detecting clinically diagnosed VBI.
Asunto(s)
Humanos , Arteria Basilar/diagnóstico por imagen , Insuficiencia Vertebrobasilar/diagnóstico por imagen , Ultrasonografía Doppler Transcraneal/métodos , Angiografía por Resonancia Magnética , Velocidad del Flujo Sanguíneo , MicrocirculaciónRESUMEN
Resumen Los eventos cerebrovasculares afectan el territorio de la circulación posterior pueden tener un comportamiento benigno,sin embargo, la oclusión de la arteria basilar suele tener consecuencias devastadoras. El uso de trombolísis sistémica ointra-arterial y la terapia endovascular son opciones terapéuticas con recuperación funcional apropiada. Se reportan doscasos de trombosis arterial basilar cuyo diagnóstico temprano permitió un manejo combinado entre embolectomía endovasculary trombólisis con resultados adecuados.
Abstract Stroke of the posterior cerebral circulation may have a benign course but basilar artery thrombosis usually have devastating consequences. Systemic thrombolysis and endovascular treatment are promising options with appropriate functional outcomes. We report two cases of basilar artery thrombosis in which early diagnosis and treatment with endovascular embolectomy and thrombolysis showed good results.
Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Trombosis , Arteria Basilar , Insuficiencia Vertebrobasilar , Terapia Trombolítica , Costa RicaRESUMEN
Abstract Introduction: The aim of this study was to examine the association of inter-arm systolic blood pressure difference (IASBPD) with carotid artery stenosis, subclavian artery stenosis and vertebral artery stenosis in patients who underwent carotid endarterectomy. Methods: A total of 141 patients (29 females, 112 males; mean age 71.2±10.4 years; range 47 to 92 years) who underwent carotid endarterectomy between September 2010 and December 2017 were retrospectively evaluated. We classified patients into four groups according to the IASBPD ˂ 10 mmHg, ≥ 10 mm Hg, ≥ 20 mmHg and ≥ 30 mmHg. The stenosis of both subclavian and vertebral arteries was considered as ≥ 50%. Results: Of the 141 patients, 44 (31.2%) had ≥ 10 mmHg, 29 (20.5%) had ≥ 20 mmHg and 4 (2.8%) had ≥ 30 mmHg of IASBPD. 26 patients (18.4%) were diagnosed with significant subclavian artery stenosis and 18 (69.2%) of them had more than 20 mmHg of IASBPD. Of the 29 patients with IASBPD ≥ 20 mmHg, 19 patients (65.5%) had a significant subclavian artery stenosis. We found a significant correlation between preoperative symptoms and subclavian artery stenosis (P=0.018) and overall perioperative stroke was seen more frequently in patients with subclavian artery stenosis (P=0.041). A significant positive correlation was observed between vertebral artery stenosis and subclavian artery stenosis (P=0.01). Conclusion: Patients who were diagnosed with both subclavian artery stenosis and IASBPD (≥ 20 mmHg) had a higher risk of postoperative stroke and death, had higher total cholesterol, LDL-C, blood creatinine level, and were more symptomatic.
Asunto(s)
Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Síndrome del Robo de la Subclavia/fisiopatología , Insuficiencia Vertebrobasilar/fisiopatología , Presión Sanguínea/fisiología , Endarterectomía Carotidea/métodos , Complicaciones Posoperatorias/etiología , Valores de Referencia , Síndrome del Robo de la Subclavia/complicaciones , Insuficiencia Vertebrobasilar/complicaciones , Determinación de la Presión Sanguínea/métodos , Estudios Retrospectivos , Factores de Riesgo , Estadísticas no Paramétricas , Accidente Cerebrovascular/etiología , Periodo PreoperatorioRESUMEN
No abstract available.
Asunto(s)
Stents Liberadores de Fármacos , Stents , Arteria Vertebral , Insuficiencia VertebrobasilarRESUMEN
No abstract available.
Asunto(s)
Enfermedades de los Nervios Craneales , Nervios Craneales , Ronquera , Insuficiencia Vertebrobasilar , Parálisis de los Pliegues VocalesRESUMEN
We report an unusual case of an 83-year-old man who was admitted with dizziness and repeated drop attacks. He was diagnosed with bilateral carotid artery occlusion and he underwent a left subclavian to left carotid bypass with ringed polytetrafluoroethylene graft. The patient's postoperative course was uneventful and no symptoms presented during a 6-month follow-up. Finally, we discuss on proper management of such patients.
Asunto(s)
Anciano de 80 o más Años , Humanos , Arterias Carótidas , Enfermedades de las Arterias Carótidas , Arteria Carótida Común , Arteria Carótida Interna , Mareo , Estudios de Seguimiento , Patología , Politetrafluoroetileno , Síncope , Trasplantes , Insuficiencia VertebrobasilarRESUMEN
OBJECTIVE@#To investigate the severity of blood steal and the hemodynamic profiles in patients with subclavian artery stenosis combined with vertebral artery stenosis.@*METHODS@#A retrospective analysis was performed of transcranial Doppler (TCD) data from patients with subclavian artery stenosis (SAS) and concomitant unilateral/bilateral vertebral artery stenosis (VAS, >50%) or occlusion in our institution between February, 2014 and July, 2018.Thirty-seven patients with SAS combined with VAS (SAS+VAS) were reviewed for types of blood steal, peak systolic velocities of blood flow in affected subclavian artery and the contralateral vertebral artery, and the findings of hyperemia testing.These data were also reviewed for 39 SAS patients without VAS (control group) for comparison of blood steal and hemodynamic profiles.@*RESULTS@#In SAS+VAS group, 5 patients showed no blood steal; blood steal in stage Ⅰ was found in 22 patients, stage Ⅱ in 7, and stage Ⅲ in 3, as compared to the numbers of 17, 12 and 10 in the control group, respectively (H=9.431, =0.002).The peak systolic velocity of the contralateral vertebral artery was 43.91±17.43 cm/s in SAS+VAS group, significantly lower than that in the control group (53.56±17.45 cm/s; = 629.5, =0.006).Hyperemia testing showed a significant difference in the negative rate between SAS+VAS group and the control group[35.1%(13/37) 7.7%(3/39);=8.603, =0.003).@*CONCLUSIONS@#SAS combined with VAS may lead to reduced compensatory blood flow in the contralateral vertebral artery to lessen the severity of subclavian steal syndrome.
Asunto(s)
Humanos , Hemodinámica , Flujo Sanguíneo Regional , Fisiología , Estudios Retrospectivos , Síndrome del Robo de la Subclavia , Arteria Vertebral , Insuficiencia VertebrobasilarRESUMEN
RESUMEN INTRODUCCIÓN: El manejo endovascular de la estenosis de la arteria vertebral en pacientes con infarto cerebral recurrente continúa siendo un tema con múltiples lagunas de conocimiento debido a la poca evidencia científica con la que se cuenta en la actualidad. CASOS CLÍNICOS: Se informan dos casos típicos de estenosis vertebral y recurrencia de infarto cerebral cerebral manejados con dispositivos endovasculares alternativos a los utilizados en la actualidad (stent balón expandible medicado con zotarolimus), con desenlaces clínicos e imagenológicos satisfactorios. Se describe la técnica usada, la condición clínica y se ilustran los resultados angiográficos. CONCLUSIÓN: A la luz de las nuevas generaciones de dispositivos y técnicas neuroendovasculares, consideramos que debe realizarse una evaluación cuidadosa e individual de los pacientes con recurrencia de enfermedad cerebrovascular y estenosis vertebral, a pesar de un manejo médico optimizado. Aún se requieren estudios conrolados que permitan la uniformidad futura en la selección de pacientes y la toma de decisiones.
SUMMARY INTRODUCTION: Endovascular management of vertebral artery stenosis in patients with recurrent cerebral infarction remains a topic with multiple gaps in knowledge because of poor scientific evidence is available today. REPORT OF CASES: Here are reported two typical cases of cerebral infarction recurrence due to vertebral artery stenosis managed with new endovascular devices (balloon-expandable-stent medicated with zotaroli-mus), with satisfactory clinical and neuroimaging outcomes. Herein it is described the technique used and the angiographic findings are illustrated. CONCLUSION: In light of new devices and neurointerventional techniques, we consider that it should be done a careful and individual evaluation of patients with vertebral stenosis and stroke recurrence despite an optimized medical management. It is still required more studies that allow future consistency in the selection of patients and decision making.
Asunto(s)
Insuficiencia Vertebrobasilar , Stents , AterosclerosisRESUMEN
OBJECTIVES: We investigated clinical significance of head shaking nystagmus (HSN) and perverted HSN (pHSN) in patients with peripheral and central vestibular disorders. METHODS: We reviewed medical records of 822 consecutive subjects who were referred to a dizziness clinic. We performed neurologic examination including video-oculography in darkness for 60 seconds before, during and for 100 seconds after head-shaking. HSN was considered to develop when post-head-shaking nystagmus last at least 5 beats with latency from end of head-shaking of no more than 5 seconds, and a velocity at least 3°/sec. RESULTS: In control group (n=45), there were observed spontaneous nystagmus (SN) in 2.2%, HSN in 17.8%, pHSN in 6.7%. In patients with peripheral vestibular disorder group (n=397), there were observed SN in 14.1%, HSN in 40.6%, pHSN in 9.8%. In patients with central vestibular disorder group (n=217), there were observed SN in 17.5%, HSN in 24.0%, pHSN in 13.4%. In unspecified dizziness group (n=208), there were observed SN in 1.9%, HSN in 13.0%, pHSN in 1.9%. pHSN was frequently observed in central vestibular disorders such as stroke, vestibular migraine, cerebellar ataxia, and vertebro-basilar insufficiency. However, pHSN was also observed at higher rate than expected in peripheral vestibular disorders including benign paroxysmal positional vertigo especially involving vertical canals, Meniere disease and even in unilateral vestibulopathy. CONCLUSIONS: Our results show that perverted HSN in dizzy populations was frequently observed not only in cases of central vestibular disorders but also in peripheral disorders. Perverted HSN can develop by any conditions that cause difference in vestibular velocity storage in vertical component of vestibular-ocular reflex.
Asunto(s)
Humanos , Vértigo Posicional Paroxístico Benigno , Ataxia Cerebelosa , Oscuridad , Mareo , Cabeza , Registros Médicos , Enfermedad de Meniere , Trastornos Migrañosos , Examen Neurológico , Reflejo , Reflejo Vestibuloocular , Accidente Cerebrovascular , Insuficiencia Vertebrobasilar , Vértigo , Pruebas de Función VestibularRESUMEN
In recent two years, new reports about concepts, technologies, materials, and especially new clinical trial results for endovascular treatment of cerebrovascular diseases, has provided tremendous promise for further progress. Mechanical thrombectomy becomes a guideline-recommended therapy for acute ischemic stroke patients with large vessel occlusion, which is considered as a landmark event. The superiority of endovascular coiling over neurosurgical clipping has been further proved for intracranial aneurysm. New devices are constantly developing for aneurysm occlusion. For brain arteriovenous malformation, application of detachable-tip microcatheters improves safety of embolization procedure, and successful transvenous embolization has been also achieved in a few cases. Long-term result of carotid stenting for symptomatic patients has been proved to be noninferior to carotid endarterectomy. Meanwhile, some new trials only obtain negative results, for example, endovascular stenting for intracranial or vertebral artery stenosis both show worse outcomes compared with medical therapy alone. More advancements and investigations are needed.
Asunto(s)
Humanos , Embolización Terapéutica , Endarterectomía Carotidea , Aneurisma Intracraneal , Terapéutica , Malformaciones Arteriovenosas Intracraneales , Terapéutica , Stents , Accidente Cerebrovascular , Terapéutica , Trombectomía , Insuficiencia Vertebrobasilar , TerapéuticaRESUMEN
Sudden sensorineural hearing loss (SNHL) develops usually in unilateral ear without known etiology. In contrast, bilateral sudden SNHL is mostly related to serious systemic diseases and have a severe hearing loss and poor prognosis compared than unilateral one. We describe here a 59-year-old man presented with a bilateral sudden SNHL and vertigo possibly attributed to dolichoectasia in vertebrobasilar artery, and discuss the possible mechanism.
Asunto(s)
Humanos , Persona de Mediana Edad , Arterias , Oído , Pérdida Auditiva , Pérdida Auditiva Bilateral , Pérdida Auditiva Sensorineural , Pérdida Auditiva Súbita , Pronóstico , Insuficiencia Vertebrobasilar , VértigoRESUMEN
A sudden hearing loss with vertigo may originate from vascular insufficiency and sometimes presents as an initial manifestation of posterior brain circulation infarction. However, it is unusual that sudden hearing loss and vertigo present as a prodrome of transient ischemic attack. Here we describe the case of a 54-year-old male patient with hypertension who presented with a sudden onset of hearing loss in his right ear and recurrent severe, whirling type dizziness without associated neurological signs or symptoms. The diffusion-weighted magnetic resonance imaging (MRI) was normal on initial presentation. Ten days later, however, the patient developed dysarthria. A follow-up MRI including the diffusion-weighted images was normal but cerebral angiography showed severe narrowing of right vertebral artery. Transient ischemic attack caused by vertebrobasilar artery stenosis should be considered in sudden hearing loss and vertigo, especially patients with vascular risk factors, even though images of brain MRI are normal.
Asunto(s)
Humanos , Masculino , Persona de Mediana Edad , Arterias , Encéfalo , Angiografía Cerebral , Constricción Patológica , Mareo , Disartria , Oído , Oído Interno , Estudios de Seguimiento , Pérdida Auditiva , Pérdida Auditiva Súbita , Hipertensión , Infarto , Ataque Isquémico Transitorio , Imagen por Resonancia Magnética , Factores de Riesgo , Arteria Vertebral , Insuficiencia Vertebrobasilar , VértigoRESUMEN
El síndrome de enclaustramiento (Locked-in syndrome) es una entidad neurológica altamente discapacitante, producida por lesiones en la porción ventral de la protuberancia; de etiología principalmente vascular. Clínicamente se manifiesta por tetraplejía, anartria, preservación de la conciencia y capacidad de expresarse mediante movimientos oculares. Presentamos el caso de un paciente masculino de 33 años, transferido de otra institución de salud con un cuadro clínico progresivo y poco específico, caracterizado principalmente por deterioro del estado de conciencia, dificultad respiratoria, cefalea de intensidad moderada y vómitos. Mediante pruebas de imágenes se comprobó la presencia de un área de isquemia en la región irrigada por el sistema vertebrobasilar. Se realizó un enfoque diagnóstico y terapéutico invasivo de orden endovascular.
Locked-in syndrome is a highly disabling neurological entity, due to lesions in the ventral portion of the pons, mainly vascular etiology. Clinical features are quiadriplegia, anarthria, preservation of consciousness and the ability to express by ocular movements. We shown a case of a 33 years-old man, who was transfer from another institution with a progressive and poorly specific clinical manifestations, mainly characterized by diminishing of consciousness, breathing difficulty, headache and vomiting, with the presumptive diagnosis of central nervous system infection. We performed image diagnostic tests and they shown and ischemic feature in the region of the vertebrobasilar irrigation. It was perform an endovascular diagnostic therapeutic approach.
Asunto(s)
Humanos , Masculino , Adulto , Estado de Conciencia , Cuadriplejía/cirugía , Cuadriplejía/complicaciones , Cuadriplejía/diagnóstico , Cuadriplejía/etiología , Cuadriplejía/mortalidad , Puente/lesiones , Insuficiencia Vertebrobasilar , Diagnóstico por ImagenRESUMEN
Se realizó un estudio cuasiexperimental de 52 pacientes con insuficiencia vertebrobasilar, atendidos en el Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba, desde septiembre hasta marzo del 2014, a fin de determinar los efectos de las maniobras de rotación cervical en el flujo sanguíneo a nivel de las arterias vertebrales extracraneales. Entre las variables analizadas figuraron: edad, sexo, maniobra de rotación cervical y velocidad diastólica final. Se emplearon la media y las proporciones como medidas de resumen, así como la prueba estadística de Ji al cuadrado de Friedman, con un nivel de significación de 0,05. Predominaron los afectados de 45-54 años en ambos sexos. Las maniobras de rotación cervical condujeron a una disminución en la velocidad diastólica final de las arterias vertebrales y redujeron el flujo sanguíneo arterial vertebral extracraneal.
A quasi-experimental study of 52 patients with vertebrobasilar failure, assisted in "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital in Santiago de Cuba was carried out from September to March, 2014, in order to determine the effects of the cervical rotation maneuvers in the blood flow at the level of the extracraneal vertebral arteries. Among the analyzed variables there were: age, sex, maneuver of cervical rotation and final diastolic speed. The mean and proportions were used as summary measures, as well as the Friedman statistical Chi squared test, with a significance level of 0,05. The 45-54 years affected patients prevailed in both sexes. The cervical rotation maneuvers led to a decrease in the final diastolic speed of the vertebral arteries and reduced the extracraneal vertebral arterial blood flow.
Asunto(s)
Insuficiencia Vertebrobasilar/terapia , Velocidad del Flujo Sanguíneo , Atención Secundaria de SaludRESUMEN
Symptomatic vertebral artery (VA) stenosis associated with bilateral carotid rete mirabile (CRM) has not been reported. We report the long-term clinical and angiographic outcome after stenting for symptomatic VA stenosis in the patient with bilateral CRM. This report is the first case that symptomatic VA stenosis associated with bilateral CRM was treated with stenting.
Asunto(s)
Adulto , Femenino , Humanos , Adulto Joven , Angioplastia de Balón , Arterias Carótidas/patología , Angiografía Cerebral , Stents , Síncope/etiología , Resultado del Tratamiento , Insuficiencia Vertebrobasilar/diagnóstico por imagenRESUMEN
Aneurysmal bone cysts (ABC) are benign bone tumors of relatively rare occurrence. Most of the lesions occur at long bones, vertebrae and flat bones. However, the cervical vertebrae involvement is uncommon. Occasionally, the ABCs compress the spinal cord and nerve roots. Depending on the level of involvement and the extent of spinal cord compression, a wide variety of neurological symptoms and signs may be noted later, ranging from mild radiculopathy to complete paraplegia or tetraplegia. A case of aneurysmal bone cyst involving the second and third cervical vertebrae in a 15 years old patient, causing compression of the right vertebral artery and subsequent vertebrobasilar insufficiency is reported. We also discuss the clinical manifestations of the vertebrobasilar insufficiency, of the spinal compression, and the surgery treatment performed in this case.
Cistos ósseos aneurismáticos são tumores ósseos benignos de ocorrência relativamente rara. A maior parte dessas lesões ocorre em ossos longos, nas vértebras e nos ossos planos. No entanto, o envolvimento das vértebras cervicais é incomum. Ocasionalmente, o cisto ósseo aneurismático pode comprimir a medula espinhal e as raízes nervosas. Dependendo do grau de envolvimento e extensão da compressão da medula espinhal, uma ampla variedade de sintomas e sinais neurológicos pode ser observada posteriormente, variando de radiculopatia suave a completa paraplegia ou tetraplegia. Relatamos um caso de cisto ósseo aneurismático envolvendo a segunda e a terceira vértebra cervical em um paciente de 15 anos, causando compressão da artéria vertebral direita e consequente insuficiência vertebrobasilar. Também discutimos as manifestações clínicas da insuficiência vertebrobasilar e da compressão espinhal e o tratamento cirúrgico realizado no caso em questão.
Asunto(s)
Humanos , Masculino , Adolescente , Quistes Óseos Aneurismáticos/complicaciones , Insuficiencia Vertebrobasilar/etiología , Arteria Vertebral , Compresión de la Médula EspinalRESUMEN
Diabetes is a major risk factor for stroke. Some studies have shown that difference between clinical signs and prognosis in diabetic patients with stroke compared to non-diabetic patients with stroke is due to difference in pattern of cerebral vascular involvement. This study was done to compare the findings of extracranial and transcranial doppler sonography in diabetic and nondiabetic patients with thrombotic stroke. This case - control study was done on 70 diabetic patients and 70 non-diabetic patients with thrombotic stroke. All patients were new cases. Extracranial and transcranial Doppler sonography was performed for all subjects. Basilar artery stenosis was significantly more frequent in diabetic cases in comparison with non-diabetic patients [P<0.05]. The prevalenc of posterior circulation stenosis in diabetic patients was significantly higher than non-diabetic patients [P<0.05]. In diabetic patients, stenosis in vertebrobasilar circulation was more frequent. Higher morbidity and mortality in diabetic patients may be due to vascular stenosis pattern