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asbryobvrz · Wysłany: Wto 20:31, 15 Mar 2011

68 patients with multiple sclerosis evoked potentials observed

Have clinical evidence of retrobulbar optic neuritis who rate their VEp 95 abnormal, and no abnormal clinical evidence of optic nerve damage occurred chapter j1. SEP class I major anatomical basis for the sensory fibers of peripheral myelinated and central nervous pathways, the nerve impulse is characterized by hopping conduction. MS pathological changes of myelin and demyelination and segmental demyelination accompanied by other pathological changes. If the neural pathway has hardened on the spot, then Lang's flying junction of sodium channel activation threshold increased, the lesion of nerve impulses can not activate the sodium channel, resulting in the original hopping conduction into the local transmission, resulting in transmission of nerve impulses block. SEP showed prolonged P40 latency. Because sensory pathways involved in varying degrees of nerve fibers is difficult to synchronize a transmission of impulses. SEP waveforms in the performance of the poorly differentiated, wave discrete new. This group of cases, lower limb weakness, difficulty walking, or paralysis and other symptoms vertebral beam, or accompanied by a sense of thoracolumbar tightening, body linen surgery, urine disorders, 57 cases (83. Cool

, the SEP abnormality rate 76.4, indicating that there is a corresponding high rate of abnormal signs were SEP. Abnormal BAEP in this group was 54, significantly lower dry VEP and SEP, which is more of the steps related to MS brain stem involvement. Abnormal BAEP this group of patients mainly in Ⅲ, v wave latencies, v wave amplitudes and V / I exception. The BAEP abnormal reaction to a variety of MS is still difficult to present a single interpretation of the pathological changes, because these reactions are not unique to the disease, but the BAEP for suspicious lesions found in brain stem lesions and provide an objective index, if for VEP,[link widoczny dla zalogowanych], SEP joint detection for MS have a greater diagnostic value of clinical data in this group cases of male MS36, EP 35 side of the {female MS32 abnormal cases, EP abnormalities in 29 cases; sex abnormal incidence of EP was no statistical significance. Can be seen from the table,[link widoczny dla zalogowanych], in patients older than 40 years higher than the EP's unusual in patients younger than 40 years of age. This may be caused by F longer duration, relapse more often,[link widoczny dla zalogowanych], the reason a wide range of decay change. The patients were improved and discharged after hospital treatment,[link widoczny dla zalogowanych], but only 16 patients underwent EP, of which 2 cases and 1 case of BAEP vEP had improved, most did not change significantly, which may be due to acute inflammation of the treatment, edema lifted, so that signs and symptoms improved, but the myelin damage fully repaired yet or not asked the reason, in some cases,[link widoczny dla zalogowanych], several years after the review is still abnormal EP