The Analyze Of Electroencephalogram And Evokde Potential In Seven Persistent Vegetative State Patiens

Objective:To analyze the relationship between clinical symptom,electroencephalogram and evoked potential in Persistent Vegetative State patients, provide evaluate evidences for PVS's diagnosis and prognosis by electrophysiological's change.Method: Clinical information of 7 patients with Persistent Vegetative State was analyzed retrospectively. EEG,BAEP,SEP were rechecked sinedie.Results:The patients were complete or partial preserve of brainstem function which in agrypnocoma after acute craniocerebral injured. In all patients, None were avake, 3 patients have aimless body movement, 2 patients can autokinesis,3 patients have eyeball pursuit movement, 2 patients can gaze on purpose, 4 patients can swallowing, 2 patients can eat by themselve, 4 patients have lightly emotional reaction. EEG: The a rhythm disappea in all 7 cases, clinical manifestation in these patientes are decorticate condition,hypermyotonia and tendon hyperreflexia; one case has short-rangeawave post-treatment,another patient has a rhythm as basilic rhythm. Clinical symptom change better with the EEG result . SEP: One patient which therapeutic effect excellence central conduction time is prolongation prior treatment, central conduction time is normal post-treatment. BAEP: Only one improved patient make a normal result.Conclusion: 1.EEG and BAEP are hard to diagnose and predict PVS,but EEG can monitor the changing of brain function, and by BAEP we can know the function of brain stem .Because only have one result of BAEP,it need a futher study to the significance.2.SEP can make a help to judge therapeutic efficacy,which can be a index to evaluate curative effect.