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RESUMO -Objetivo: Descrever subtipos de demência em pacientes atendidos no HC-UNICAMP. Metodo: No período 1989-1998, foram admitidos 261 pacientes com demência (89,7% estudados retrospectivamente, e 10,3% prospectivamente); idade 63,5 anos (±13,2) e educação 3,6 anos (±3,9; 25% analfabetos). O diagnóstico de demência e seus subtipos baseou-se no DSM-IV, CAMDEX, NINCDS-ADRDA, NINDS-AIREN/ADDTC, LundManchester, tap-teste liquórico, exames laboratoriais e de neuroimagem. Resultados: Sessenta e cinco pacientes (24,9%) tinham demência vascular, 62 (23,7%) Alzheimer, 28 (10,7%) hidrocefálica, 29 (11,1%) pseudodemência depressiva, 12 (4,6%) pós-traumática, 9 (3,4%) frontotemporal, 14 (5,4%) demência mista e 38 (14,5%) causas diversas ou desconhecidas. A demência foi mínima ou leve em 123 pacientes (47,1%), moderada em 45 (36,4%) e grave em 43 (16,5%). Conclusão: A proporção de demência vascular foi 24,9%, Alzheimer 23,7%, e hidrocefalia de pressão normal 10,7%, contrastando com a da literatura (20-30%, 50% e 1-4%, respectivamente), provavelmente por se tratar de casos admitidos num hospital terciário. Estudos epidemiológicos são necessários para avaliar a real proporção das síndromes demenciais na população. PALAVRAS-CHAVE: demência, doença de Alzheimer, demência vascular, CAMDEX Dementia in patients of UNICAMP University HospitalABSTRACT -Objective: To report the relative frequencies of the causes of dementia in patients seen at UNICAMP Hospital. Method: From 1989 to 1998, 261 dementia patients were admitted (89.7% studied retrospectively, and 10.3%, prospectively); mean age 63.5 years (±13.2), and education 3.6 years (±3.9; 25% illiterate). Diagnosis of dementia and its subtypes was based on DSM-IV criteria, CAMDEX, NINCDS-ADRDA, NINDS AIREN/ADDTC, Lund-Manchester, besides tap-test, including laboratory and neuroimaging examinations. Results: Sixty five patients (24.9%) had vascular dementia, 62 ( 23.7%) Alzheimer's, 29 (11.1%) depressive pseudodementia, 28 (10.9%) normal pressure hydrocephalus, 14(5.4%) mixed, 12 (4.6%) post-traumatic, 9 (3.4%) frontotemporal and 38 (14.5%) had diverse or unknown causes. Dementia was minimal or mild in 123 (47.1%), moderate in 95 (36.4%), and severe in 43 (16.5%). Conclusion: Frequency of vascular dementia was 24.9%, Alzheimer's 23.7%, and normal pressure hydrocephalus 10.7%, in disagreement with that found in the neurological literature (20-30%, 50%, and 1-4%, respectively), probably because we are dealing with cases admitted to a tertiary university hospital. Epidemiological studies are needed to disclose the true proportion of these dementia syndromes in the population.

REPORT DOCUMENTATION PAGE Public reporting burden for this collection of infonnation is eslinnated to average 1 hour per response, including the time for reviewing instmctions, searching existing data sources, gathenng and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection ot information including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204 Arlington VA 22202-4302, and to the Office of tvlanagement and Budget, Papenwork Reduction Project (0704-0188), Washington, DC 20503. The purpose of this study was to experimentally determine the impact of varying degrees of visor transmissivity and reflectivity on visual acuity. This study measured pilot's target detection range when wearing six different visor configurations: (a) no visor, (b) USAF tinted visor, (c) the Visually Coupled Acquisition and Targeting System (VCATS) 25% transmissive visor with a 9% reflective coating, (d) the VCATS 25% transmissive uncoated visor, (e) the VCATS 35% transmissive uncoated visOr with a 13% reflective coating. The results of this study showed that detection range decreased as transmissivity was decreased while detection range remained unchanged as reflectivity was increased.14. SUBJECT TERMS The results of this study showed that detection range decreased as transmissivity was decreased while detection range remained unchanged as reflectivity was increased.