RESUMO
Twenty patients with vasculitic neuropathy were analyzed. Sixteen of the twenty presented with classic mononeuritis multiplex but four had distal, symmetrical, sensorimotor polyneuropathy. Though vasculitic neuropathy is classically associated with Collagen vascular syndromes like, polyarteritis nodosa, rheumatoid arthritis and systemic lupus erythematosis, only 13/20 of our patients had definitive Collagen vascular disease. A large proportion (7/20) had vasculitic neuropathy as the only clinical feature.
Assuntos
Adulto , Idoso , Artrite Reumatoide/complicações , Doenças do Colágeno/complicações , Feminino , Seguimentos , Humanos , Lúpus Eritematoso Sistêmico/complicações , Masculino , Pessoa de Meia-Idade , Neurite (Inflamação)/etiologia , Doenças do Sistema Nervoso Periférico/etiologia , Nervo Fibular/fisiopatologia , Poliarterite Nodosa/complicações , Nervo Radial/fisiopatologia , Transtornos de Sensação/etiologia , Nervo Ulnar/fisiopatologia , Vasculite/complicaçõesRESUMO
The traditional concept of a clear demarcation between the vascular supply of the internal capsule and the thalamus cannot be regarded as absolute. Two cases of sensorimotor stroke due to posterior cerebral artery territory infarction are described, with CT evidence of internal capsular involvement.
Assuntos
Idoso , Encéfalo/irrigação sanguínea , Infarto Cerebral/diagnóstico , Transtornos Cerebrovasculares/diagnóstico , Hemiplegia/diagnóstico , Humanos , Masculino , Tálamo/irrigação sanguíneaRESUMO
Muscle responses evoked on transcranial stimulation of the motor cortex (corticomotor) and motor roots (spinal) were studied in 20 healthy volunteers using a simplification of Rossini's technique and conventional EMG equipment. Cortical motor responses were consistently obtained from the contralateral upper limb with tolerable stimuli. Lower limb motor responses were inconsistent and sometimes required uncomfortably high stimulus strengths. In the upper limbs, peripheral conduction time (PCT) was estimated by the latency of the response to spinal stimulation. A comparable measure of PCT was obtained for the abductor pollicis brevis (APB) from the F-responses. The difference between the latency of the corticomotor response and the PCT was considered to represent central motor conduction time (CMCT). Corticomotor latencies were: APB 18.51 +/- 1.1 msec, biceps 9.77 +/- 0.46 msec and tibialis anterior 26.5 +/- 2.9 msec. CMCT from cortex to C8/T1 segments (APB) was 4.68 +/- 0.6 msec and between cortex and C5/C6 (biceps) 4.24 +/- 0.42 msec.