The changes of electroencephalogram(EEG) in patients with dementia are most commonly studied by analyzing power or magnitude in certain traditionally defined frequency bands. However because of the absence of on identified metric which quantifies the complex amount of information, there are many limitations in using such a linear method. According to chaos theory, irregular signals of EEG cal also result from low dimensional deterministic chaos. Chaotic nonlinear dynamics in the EEG can be studied by calculating the correlation dimension. The authors have analyzed EEG epochs from three patients with dementia of Alzheimer type and three matched control subject. The result showed that patients with dementia of Alzheimer type had significantly lower correlation dimension than non-demented controls on 12 channels. Topographic analysis showed that the correlation dimensions were significantly lower in patients with Alzheimer's disease on frontal, temporal, central, and occipital head regions. These results show that brains of patients with dementia with dementia of Alzheimer type have a decreased complexity of electrophysiological behavior. We conclude that the nonlinear analysis such as calculating correlation dimension can be a promising tool for detecting changes in the complexity of brain dynamics.
Alzheimer Disease ; Brain ; Dementia* ; Electroencephalography* ; Head ; Humans ; Nonlinear Dynamics*

There is a wide array of designation for cutaneous vascular disorders based on clinical characteristics, histology, embryology, cellular biology, and hemodynamics. The cutaneous vascular disorders can be divided into hemangioma and vascular malformation according to the biologic classification based on cell kinetics i.e. endothelial hyperplasia. There are clinical and histologic differences between them. In this study, clinical, histologic and im-munohistochemical evaluations were attempted on 40 cases of cutaneous vascular disorders diagnosed the period between 1985 and 1993. The results are as follows: 1) Twenty-three out of forty cases were immunoreacive for proliferating cell nuclear antigen(PCNA). The lesions composed of capillary-sized blood vessels with endothelial hyperplasia were diffusely reactive, whereas those composed largely of dilated blood vessels with or without focal endothelial hyperplasia were only focally reactive. 2) Each groups of the classic classification contained both reactive and nonreactive cases except nevus flammeus and juvenfle hemangioma. 3) In contrast to the cases nonreactive for PCNA, those reactive for PCNA contained areas of proliferating small vessels, which showed reactivity for PCNA. In conclusion, the cutaneous vascular disorders diagnosed by the classic classification are heterogeneous in the pattern of the endothelial hyperplasia and the PCNA staining. Therefore it should be classified by the clinical and the histologic characteristics.
Hemangioma

The patient was a 52-year-old female with swelling in both lower legs and peripheral blood eosinophilia. Biopsy specimen revealed the heavy infiltration of eosinophils with sparse small lymphocytes showing mild atypia. The diagnosis was Kimura disease. The symptoms including eosinophilia were relieved by steroid treatment. At 17 months from initial biopsy, the patient developed swelling of the buttock. At 25 months, fever and dyspnea with multiple lung nodules developed. Wedge resection revealed multiple aggregates of CD3(+), CD56(+), Epstein-Barr virus(+) large atypical lymphocytes with necrosis. The patient was finally diagnosed with extranodal NK/T cell lymphoma (NKTL). Epstein-Barr virus in situ hybridization retrospectively performed on the previous biopsies demonstrated Epstein-Barr virus infection in small CD3(+) lymphocytes. The patient expired after 26 months despite chemotherapy. Blood eosinophilia correlated well with disease activity during the clinical course. This case shows not only unusual histologic features, which hampered the correct diagnosis, but also a unique clinical manifestation of NKTL.
Angiolymphoid Hyperplasia with Eosinophilia ; Biopsy ; Buttocks ; Dyspnea ; Eosinophilia ; Eosinophils ; Epstein-Barr Virus Infections ; Female ; Fever ; Herpesvirus 4, Human ; Humans ; In Situ Hybridization ; Leg ; Lung ; Lymphocytes ; Lymphoma ; Middle Aged ; Morphinans ; Muscle, Skeletal ; Necrosis ; Retrospective Studies

The patient was a 52-year-old female with swelling in both lower legs and peripheral blood eosinophilia. Biopsy specimen revealed the heavy infiltration of eosinophils with sparse small lymphocytes showing mild atypia. The diagnosis was Kimura disease. The symptoms including eosinophilia were relieved by steroid treatment. At 17 months from initial biopsy, the patient developed swelling of the buttock. At 25 months, fever and dyspnea with multiple lung nodules developed. Wedge resection revealed multiple aggregates of CD3(+), CD56(+), Epstein-Barr virus(+) large atypical lymphocytes with necrosis. The patient was finally diagnosed with extranodal NK/T cell lymphoma (NKTL). Epstein-Barr virus in situ hybridization retrospectively performed on the previous biopsies demonstrated Epstein-Barr virus infection in small CD3(+) lymphocytes. The patient expired after 26 months despite chemotherapy. Blood eosinophilia correlated well with disease activity during the clinical course. This case shows not only unusual histologic features, which hampered the correct diagnosis, but also a unique clinical manifestation of NKTL.
Angiolymphoid Hyperplasia with Eosinophilia ; Biopsy ; Buttocks ; Dyspnea ; Eosinophilia ; Eosinophils ; Epstein-Barr Virus Infections ; Female ; Fever ; Herpesvirus 4, Human ; Humans ; In Situ Hybridization ; Leg ; Lung ; Lymphocytes ; Lymphoma ; Middle Aged ; Morphinans ; Muscle, Skeletal ; Necrosis ; Retrospective Studies

PURPOSE: The purpose of this study was to identify characteristics of the experience of maintaining employment for people with mental disabilities. METHODS: The research design was a descriptive design using Q-methodology, which is a method of measuring subjectivity. Twenty-one participants classified 34 selected Q-statements on a nine-point scale to create a normal distribution. The PC-QUANL software program(a factor analysis program for the Q technique) was used to analyze the Q-sort data. RESULTS: Three types were extracted that described different expressions of the experience of maintaining employment for people with mental disabilities; these types explained 52.3% of the total variance. Type I is ‘Workplace support’, Type II is ‘Self-management’, Type III is ‘Experience integration’. CONCLUSION: The results of this study provide an understanding that there are different types of experiences for maintaining employment for people with mental disabilities and each type has certain characteristics. In future studies, it would be helpful to develop customized nursing interventions for psychiatric nurses while occupational rehabilitation services are being provided.
Employment* ; Humans ; Mentally Disabled Persons* ; Methods ; Nursing ; Q-Sort ; Rehabilitation ; Research Design

OBJECTIVES: We aimed to develope the Suicide Probability Scale for Adolescent (SPS-A) to evaluate the possibility of suicide behavior in adolescents. METHODS: SPS-A was adminstered to 792 middle and high school students for examining the reliability and validity. RESULTS: SPS-A was found to have significantly high internal consistency and total -subscale score correlations. Factor analysis yielded four factors of negative self-evaluation, hopelessness, suicide idea and hostility, which explained 53.28% of total variables. In the assessment of correlations with other suicide-related scales for the concurrent validity of SPS-A, Rosenberg self-esteem scale and Buss-Durkee hostility scale have significant correlations with SPS-A. However, Children's depression inventory and Hopelessness scale for adolescent did not have significant correlations with SPS-A. CONCLUSION: We concluded that SPS-A had high reliability and validity, which is usefull for evaluating suicide idea in adolescents. This study suggests that hopelessness and depressive symptoms are not for evaluating suicide risk in adolescents, unlike adult group.
Adolescent* ; Adult ; Depression ; Diagnostic Self Evaluation ; Hostility ; Humans ; Reproducibility of Results ; Suicide* ; Weights and Measures

PURPOSE: The authors report a case of optic nerve evulsion with literature review. METHOD: 15-year-old boy, who had optic nerve evulsion by tear of inferior rectus and medial rectus muscles, and hypotony by retinal and choroidal detachment RESULTS: we could preserve the eyeball with normal pressure by pars plana vitrectomy, endolaser photocoagulation and silicone oil injection
Adolescent ; Choroid ; Humans ; Light Coagulation ; Male ; Muscles ; Optic Nerve Injuries ; Optic Nerve* ; Retinaldehyde ; Silicone Oils ; Vitrectomy

OBJECTIVES: We investigated impulsivity and sensation seeking of pathological gambling, comparing with alcoholism and normal group. METHODS: 36 pathological gamblers, who were diagnosed by DSM-IV criteria, were compared with 31 alcoholism group and 26 healthy normal group with Barratt impulsivity scale and Zuckerman sensation seeking scale. RESULTS: 1) Pathological gamblers appeared to have much more impulsivity than alcoholism group or normal group. In respect to sensation seeking, no significant differences were founded among three groups. 2) Pathological gamblers tend to have more non-planning impulsivity, cognitive impulsivity, and motor impulsivity than alcoholic group. Comparing with normal group, pathological gamblers tend to have more non-planning impulsivity and motor impulsivity, but not in cognitive impulsivity. 3) There were no differences in three sub-scales including of thrill seeking, experience seeking and disinhibition out of four sub-scales of sensation seeking scale, among three groups. However, Boredom susceptibility was higher in pathological gamblers than alcoholics and normal group. CONCLUSIONS: These results suggested that personality of pathological gambler is most impulsive and boredom susceptible, which indicates that pathological gamblers is more serious pathological clinical disorder than alcoholism.
Alcoholics ; Alcoholism* ; Boredom ; Diagnostic and Statistical Manual of Mental Disorders ; Gambling* ; Humans ; Impulsive Behavior* ; Sensation

Among the complications of cataract surgery, the reported frequency of posterior capsular opacification was 20~50 percent. We experienced a case of new type of posterior capsular opacification in the seventy-one year old woman patient, who undertook the cataract operation with phacoemulsification six years ago and visited our hospital with the decreased vision. With biomicroscopic examination, posterior capsular opacification, creating a closed chamber between the lens and the posterior capsule in which a liquefied, milky white substance accumulates was detected. The patient was treated with Nd: YAG laser capsulotomy. To our knowledge, there has been no reported case of liquefied posterior capsular opacification in Korea. Therefore we report this case with literature review.
Cataract ; Female ; Humans ; Korea ; Lasers, Solid-State ; Phacoemulsification

Pheoehromocytoma is a kind of very rare endocrine disease and which is completely recovered by surgical resection of the tumor, but rapidly changing cardiovascular response to the cathecholamine during the anesthetic course and after removal of tumor make the anesthetic management difficulty. Various anesthetic agent can be used with their good and bad characteristics successfully if the pathophysiology of the disease and pharmacology of the drugs are kept in mind. We have experienced successful anesthetic management for pheocromocytoma removal using halothane-N2O-O2, and muscle relaxant and cardiovascular change was supported by pentolamine (Regitine), Propranolol(Inderal), and Levophed.
Endocrine System Diseases ; Norepinephrine ; Pharmacology