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KMID : 08793200120010010036
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Annuals of Clinical Study - Seoul National Hospital
2001 Volume.2001 No. 1 p.36 ~ p.44
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An Electroencephalographical Study on the Psychiatric patients
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이준노/Lee JN
오동렬/양동선/김규현/Oh DR/Yang DS/Kim KH
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Abstract
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The electroencephalographic records and clinical data of 630 patients were analysed and reviewed. They had undergone EEG examinations at Seoul National Mental Hospital during recent 2 years(1999. 4-2001. 3). The results were as follows : 1) Among total, 81.6% of patients were ward patients and 61.6% of patients were men. The greatest number of psychiatric patients was those in schizophrenics(41.7%), and next came epilepsy(15.9%), alcohol related disorder and drug abuse(8.9%), affective disorder(6.8%), organic brain syndrome(5.9%) and mental retardation(5.9%) etc. in order of lesser frequency. 2) The psychiatric patients producing abnormal EEG were 22.1% of the total patients. The percentage of abnormal EEGs in various psychiatric disorders were as follows ; it was highest in epilepsy(46.0%), an next came organic brain disorder(27.0%), childhood psychiatric disorder(25.8%), affective disorder(23.3%), schizophrenia(19.4%), mental retardation(17.6%), alcohol and drug abuse(10.7%). 3) In age distribution, 29.7% of total patients had the age between 31-40. And next 22.4% of patients were belonged to the age group of 21-30. 4) In abnormality of EEG, the most frequent abnormal results was minimal(33.8%), and next came mild(23.0%), moderate(22.3%), minimal to mild(10.8%) and mild to moderate(5.8%), in order of lesser frequency. In epilepsy, moderate(32.6%) and minimal(30.4%) abnormality were the most frequent, but in schizophrenia, the most frequent abnormality was minimal(33.3%) and mild(33.3%). 5) In aspects of the purpose of EEG referral, most psychiatrist referred EEG in order to rule out organicity(60.8%), to follow up abnormal EEG records(13.5%) and to assess for the seizure like attack(12.4%) at the Seoul National Mental Hospital.
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KEYWORD
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