RESUMO
Stab wound of the cervical spinal cord with ipsilateral vertebral artery injury is rare. We report a case of a penetrating injury by scissors to the cervical spinal cord and right vertebral artery. The management is discussed and literature reviewed.
Assuntos
Traumatismos da Medula Espinal/etiologia , Artéria Vertebral/lesões , Ferimentos Perfurantes/etiologia , Acidentes Domésticos , Vértebras Cervicais , Pré-Escolar , Feminino , Humanos , Radiografia , Traumatismos da Medula Espinal/diagnóstico por imagem , Traumatismos da Medula Espinal/cirurgia , Artéria Vertebral/diagnóstico por imagem , Ferimentos Perfurantes/diagnóstico por imagem , Ferimentos Perfurantes/cirurgiaRESUMO
The influence of cervical and periarterial sympathectomy on endothelium-dependent relaxation of the rabbit common carotid artery was studied in vitro. Noradrenaline, serotonin, acetylcholine and papaverine concentration-response curves of sympathectomized and control rabbit common carotid artery rings were recorded and analyzed and effects of endothelium removal were investigated. Endothelium-dependent relaxation was selectively and significantly inhibited in 3 weeks postsympathectomy arterial preparations. Alterations in acetylcholine receptors of endothelial cells, decrease in endothelium-derived relaxing factor synthesis, or desensitization of medial muscular cells to endothelium-derived relaxing factor are hypothetical causes of this phenomenon.
Assuntos
Endotélio Vascular/fisiologia , Sistema Nervoso Simpático/fisiologia , Vasodilatação/fisiologia , Acetilcolina/farmacologia , Animais , Artérias Carótidas/inervação , Artérias Carótidas/fisiologia , Feminino , Técnicas In Vitro , Masculino , Norepinefrina/farmacologia , Papaverina/farmacologia , Coelhos , Serotonina/farmacologia , SimpatectomiaRESUMO
Vascular compression syndromes of the peroneal nerve are rare. The case history of a patient with a peroneal nerve compression caused by a true anterior tibial artery aneurysm is reported. The surgical excision of the aneurysm resulted in marked improvement.
Assuntos
Aneurisma/cirurgia , Síndromes de Compressão Nervosa/cirurgia , Nervo Fibular/cirurgia , Artérias da Tíbia/cirurgia , Aneurisma/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Síndromes de Compressão Nervosa/patologia , Nervo Fibular/patologia , Trombose/patologia , Trombose/cirurgia , Artérias da Tíbia/patologia , Tomografia Computadorizada por Raios XRESUMO
A 42-year-old man with ataxic tetraparesis is reported. Computerized tomography showed bilateral and symmetrical lacunar infarcts at the junctions of the posterior limb of the internal capsule and the corona radiata. Previously this clinical syndrome had been reported only with a lesion in the pons.
Assuntos
Ataxia Cerebelar/diagnóstico por imagem , Infarto Cerebral/diagnóstico por imagem , Ponte/irrigação sanguínea , Quadriplegia/diagnóstico por imagem , Adulto , Dominância Cerebral/fisiologia , Humanos , Masculino , Exame Neurológico , RadiografiaRESUMO
A rare neurovascular complication of a antebrachial arteriovenous fistula in a chronic hemodialysis patient is reported. A large brachial venous pseudoaneurysm caused median neuralgia by direct compression of the nerve. Surgical resection of the pseudoaneurysm resulted in complete relief of neuralgia.
Assuntos
Aneurisma/cirurgia , Derivação Arteriovenosa Cirúrgica , Síndrome do Túnel Carpal/cirurgia , Antebraço/irrigação sanguínea , Neuralgia/cirurgia , Complicações Pós-Operatórias/cirurgia , Diálise Renal , Adolescente , Artérias/cirurgia , Oclusão de Enxerto Vascular/cirurgia , Humanos , Masculino , Síndromes de Compressão Nervosa/cirurgiaRESUMO
The authors report an unusual case of intraradicular lumbar disc herniation. A large fragment of lumbar disc was found within the sheath of the right S1 nerve root. Surgical treatment results in a satisfactory clinical outcome. The literature on intradural and intraradicular lumbar disc herniation is reviewed.