Analysis of 565 thrombectomies for anterior circulation stroke: A Brazilian registry.

INTRODUCTION: The benefits of mechanical thrombectomy in the treatment of patients with acute stroke due to large vessel occlusions (LVOs) have been extensively demonstrated by randomized trials and registries in developed countries. However, data on thrombectomy outside controlled trials are scarce in developing countries. The aim of this study was to assess the safety and efficacy, and to investigate the predictors for good and poor outcomes of thrombectomy for treatment of AIS due to anterior circulation LVOs in Brazil. MATERIALS AND METHODS: This was a single center registry of thrombectomy in the treatment of stroke caused by anterior circulation LVOs. Between 2011 and 2019, a total of 565 patients were included. RESULTS: the mean baseline NIHSS score on admission was 17.2. The average baseline ASPECTS was 8, and 91.0% of patients scored ≥6. Half of the patients received intravenous thrombolysis. The mean time from symptom onset to arterial puncture was 296.4 minutes. The mean procedure time was 61.4 minutes. The rates of the main outcomes were recanalization (TICI 2b-3) 85.6%, symptomatic intracranial hemorrhage (sICH) 8,1%, good clinical outcome (mRS=0-2) 43,5%, and mortality 22.1% at three months. CONCLUSIONS: This study demonstrates the efficacy and safety of mechanical thrombectomy for treatment of patients with AIS of the anterior circulation in real-life conditions under limited facilities and resources. The results of the present study were relatively similar to those of large trials and population registers of developed countries.

Thrombectomy for Posterior Circulation Stroke: Predictors of Outcomes in a Brazilian Registry.

BACKGROUND: Acute basilar artery occlusion is a devastating life-threatening condition. Early recanalization is the therapeutic goal in patients with acute ischemic stroke. Despite the high rates of recanalization achieved with modern devices for basilar occlusions, many patients have had poor clinical outcomes. This study aimed to assess the predictors of good and poor outcomes among patients with basilar artery occlusion treated with thrombectomy. METHODS: A consecutive registry of 80 patients was included in this retrospective study. The primary end point was to access variables associated with neurologic outcomes defined by a modified Rankin Scale (mRS) score of 0-2, symptomatic intracranial hemorrhage (sICH), and mortality at 3 months follow-up. RESULTS: Recanalization was achieved in 86.2%, and the sICH rate was 8.7%. A good neurologic outcome (mRS score 0-2) was observed in 26.2% and a moderate outcome (mRS score 0-3) in 32.5% of patients. The mortality was 38.7% at 3 months follow-up. CONCLUSIONS: After thrombectomy for posterior circulation strokes, young patients, V4-proximal basilar occlusion, (high) baseline posterior circulation Alberta Stroke Program Early CT Score, and complete recanalization were independent predictors of good neurologic outcomes. Failure to recanalize was strongly related to sICH and mortality. In addition, diabetes, atrial fibrillation, and baseline National Institutes of Health Stroke Scale scores ≥10 had an independent association with mortality. This study contributes to the knowledge required to optimize recanalization treatments for posterior circulation strokes and may help to improve future clinical studies.

Prevalence of Vas Deferens Calcifications on Abdominal CT Examinations and Association With Systemic Conditions.

OBJECTIVE. The purpose of this study was to describe the prevalence of vas deferens (VD) calcifications on abdominal CT examinations and the associations between VD calcifications and several systemic conditions. MATERIALS AND METHODS. The CT examinations of male patients from January 2010 to December 2011 were retrospectively reviewed. After exclusions, the records of 1915 consecutively identified patients were analyzed. Five readers, 3rd- and 4th-year radiology residents, recorded the presence and laterality of VD calcifications and of vascular calcifications presumed due to atherosclerosis. A sixth reader parsed the patient records for diagnoses of type 2 diabetes mellitus (DM) and chronic kidney disease (CKD). RESULTS. The mean age of the entire sample population was 52.9 ± 18.9 years (range, 1-93 years). The mean age of patients with VD calcifications was 59.3 ± 12.0 (SD) years and of the group without VD calcifications was 52.9 ± 19.1 years (p = 0.17). The prevalence of VD calcification was 1.61% (31 patients): 21 (67.7%) of the patients had bilateral calcification; seven (22.6%), right-sided only; and three, (9.7%) left-sided. The frequency of DM was 28.8% (551/1915), of CKD was 7.58% (150/1915), and of atherosclerosis, 60.4% (1156/1915). The mean caliber of calcified VDs was 5.31 ± 1.29 mm versus 3.63 ± 0.63 mm for patients without calcification or any chronic condition (p < 0.0001). Among age, atherosclerosis, DM, and CKD in univariate regression analysis, only DM was associated with VD calcification (p = 0.006). However, because age (p = 0.063) and atherosclerosis (p = 0.057) were close to significant, they were included in the multivariate analysis, which also showed only DM associated with VD calcification (odds ratio, 2.14 ± 0.85). CONCLUSION. In the large cohort in this study, the prevalence of VD calcification was 1.61%. VD calcification was strongly associated with DM. The pathologic implications of VD calcification remain unclear and warrant further investigation in prospective longitudinal studies.

Results of kyphoplasty in the minimally invasive treatment of vertebral metastasis / Resultado da cifoplastia no tratamento minimamente invasivo das metástases vertebrais / Resultado de la cifoplastia en el tratamiento mínimamente invasivo de las metástasis vertebrales

OBJECTIVE: To evaluate the clinical and radiological outcome of minimally invasive surgical treatment of vertebral metastases using the technique of kyphoplasty. METHODS: This was a prospective observational study of patients with the diagnosis of spinal metastasis who underwent minimally invasive surgical treatment by filling the vertebral body with balloon kyphoplasty technique. Clinical evaluation included patient age at surgery, diagnosis of the tumor, biopsy results, data of the surgical procedure performed, visual pain scale (VAS) and complications related to surgery. Radiological evaluation involved the study of radiographic procedures in the anteroposterior and lateral incidences, with the analysis of vertebral body kyphosis and the occurrence of extravasation of cement. RESULTS: 22 patients with spinal metastases who were treated by balloon kyphoplasty, 8 (36%) males and 14 (64%) females were studied. The average age was 56.05 years and the mean follow-up was 8.5 months. The mean preoperative VAS was 8.73, 1.73 in the initial postoperative period, and 1.92 in the late postoperative period. CONCLUSION: Kyphoplasty proved to be a safe and effective technique for symptomatic treatment of vertebral metastases. .

OBJETIVO: Avaliar o resultado clínico e radiológico do tratamento cirúrgico minimamente invasivo das metástases vertebrais por meio da técnica de cifoplastia. MÉTODOS: Este é um estudo observacional prospectivo de pacientes com diagnóstico de metástase vertebral, que foram submetidos ao tratamento cirúrgico minimamente invasivo por meio de preenchimento do corpo vertebral com a técnica de cifoplastia com balão. A avaliação clínica incluiu a idade do paciente no momento da cirurgia, o diagnóstico do tumor, os resultados das biópsias, os dados do procedimento cirúrgico realizado, a escala visual de dor (EVA) e as complicações relacionadas à cirurgia. A avaliação radiológica envolveu o estudo dos exames radiográficos nas incidências anteroposterior e lateral, com a análise da cifose do corpo vertebral e a ocorrência de extravasamento do cimento. RESULTADOS: Foram estudados 22 pacientes portadores de metástase vertebral que foram tratados por meio de cifoplastia com balão, sendo 8 (36%) do sexo masculino e 14 (64%) do sexo feminino. A média de idade foi de 56,05 anos e o tempo médio de seguimento, 8,5 meses. A média da EVA pré-operatória foi de 8,73, no pós-operatório inicial, de 1,73 e no pós-operatório tardio, de 1,92. CONCLUSÃO: a cifoplastia mostrou-se uma técnica segura e efetiva para o tratamento sintomático das metástases vertebrais. .

OBJETIVO: Evaluar el resultado clínico y radiológico del tratamiento quirúrgico mínimamente invasivo de las metástasis vertebrales utilizando la técnica de cifoplastia. MÉTODOS: Se trata de un estudio observacional prospectivo de los pacientes con el diagnóstico de metástasis vertebral que se sometieron a tratamiento quirúrgico mínimamente invasivo mediante el llenado del cuerpo vertebral con la técnica de cifoplastia con balón. La evaluación clínica incluyó la edad del paciente en la cirugía, el diagnóstico del tumor, los resultados de la biopsia, los datos del procedimiento quirúrgico realizado, la escala visual de dolor (EVA) y las complicaciones relacionadas con la cirugía. La evaluación radiológica implicó el estudio de exámenes radiográficos en las incidencias anteroposterior y lateral, con el análisis de la cifosis del cuerpo vertebral y la ocurrencia de la extravasación del cemento. RESULTADOS: 22 pacientes con metástasis vertebrales que fueron tratados con cifoplastia con balón, siendo 8 (36%) hombres y 14 (64%) mujeres. La edad promedio fue de 56,05 años y la media de seguimiento fue de 8,5 meses. La media preoperatoria de la EVA fue 8,73, la postoperatoria inicial fue de 1,73 y la postoperatoria tardía fue 1,92. CONCLUSIÓN: La cifoplastia ha demostrado ser una técnica segura y eficaz para el tratamiento sintomático de las metástasis vertebrales. .