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Previous issue date: 2017-12-15 / O Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / Nos ?ltimos anos diversos estudos mostraram que a Radia??o Ultravioleta Solar (R-UV)
provoca impactos em diversas ?reas, entre elas, destacam-se a sa?de humana e a climatologia.
As cidades de La Paz ? Bol?via e Natal ? Brasil caracterizam-se por apresentar fluxos de RUV
elevados ao longo de todo o ano. Tais cidades possuem caracter?sticas t?picas e pr?prias:
Natal ? uma cidade litor?nea, com clima tropical, enquanto La Paz est? localizada a uma
altitude acima de 3.600 m, nos Andes. Este trabalho teve como principais objetivos: 1) avaliar
o comportamento dos n?veis de R-UV em solo, por meio do ?ndice ultravioleta (IUV); as
Doses M?nimas Eritematosas (DEM) e a Dose Erit?mica Acumulada (DEA), nas cidades de
La Paz e Natal, no per?odo compreendido entre 1997 a 2012; 2) realizar uma descri??o das
principais caracter?sticas clim?ticas destas cidades que possam detectar potenciais fatores que
justifiquem patamares t?o elevados de radia??o e 3) avaliar a incid?ncia de fotodermatoses
(FTD) observadas em La Paz, buscando sua poss?vel associa??o com fatores clim?ticos. As
informa??es de casos de FTD na cidade de La Paz foram coletadas na Policl?nica Central do
Hospital ?Caja Nacional de Salud? (CNS). As informa??es de R-UV foram obtidas por
espectrofot?metros Brewer, instalados em ambas as localidades. Referente ? ?rea de sa?de,
utilizou-se as equa??es de estima??o generalizada para a determina??o do risco relativo de
FTD por sexo e faixa et?ria e as taxas de incid?ncia de FTD foram assim avaliadas. Com
rela??o ? intensidade da R-UV, realizou-se uma valida??o da informa??o coletada pelos
espectrofot?metros por meio de modelagem. Observou-se que, independente da ?poca do ano,
no hor?rio pr?ximo ao meio dia, os registros de IUV corresponderam ?s escalas ?Muito Alto e
Extremo? nas duas cidades. A DEM para fototipos IV (450 Jm-2) foi atingida j? nas duas
primeiras horas do dia. Nos ver?es, a DEA atingiu um m?ximo de 12.950 Jm-2 em La Paz e
7.546 Jm-2 em Natal. Em La Paz, registraram-se 12.153 casos de FTD dos quais 63,7%
correspondem ao sexo feminino. A Taxa m?dia de Incid?ncia (TI) foi de 31 casos por 100.000
habitantes, evidenciando um risco 4,7 vezes maior nos idosos comparado ?quele da faixa de 0
a 4 anos. Uma das principais dificuldades no desenvolvimento desta pesquisa foi referente ao
acesso ? informa??o de sa?de em Natal em um hospital de refer?ncia (Hospital Universit?rio
Onofre Lopes - HUOL-UFRN). Dado que a pesquisa teria que ser submetida a um comit? de
?tica para avalia??o e/ou aprova??o. Por?m, n?o havia garantia de ser aprovada. No intuito de
n?o adiar o estudo decidiu-se por restringir a an?lise dos casos cl?nicos apenas ? cidade de La
Paz. Referente ? sa?de da popula??o em La Paz destaca-se que a incid?ncia de FTD no sexo
feminino ? maior em rela??o ao masculino, com especial destaque na faixa et?ria de 15 a 59
anos. Conclui-se que h? necessidade de ado??o de novas pol?ticas e estrat?gias educativas de
prote??o individual, tanto em La Paz quanto em Natal, devido ? exposi??o das popula??es
dessas cidades aos altos fluxos de R-UV observados em solo. / In recent years several studies have shown that ultraviolet radiation (R-UV) causes impacts in
several areas, among them, human health and climatology. The cities of La Paz - Bolivia and
Natal - Brazil, are characterized by high R-UV fluxes throughout the year. These cities have
typical and proper characteristics: Natal is a coastal city with a tropical climate, while La Paz
is located at an altitude above 3,600 m in the Andes. The main objectives of this work were:
1) to evaluate the behavior of R-UV levels by means of the ultraviolet index (UVI); the
Minimum Erythemical Dose (DEM) and the Cumulative Erythema Dose (DEA)
determination, in the cities of La Paz and Natal, between 1997 and 2012; 2) to perform a
description of the main climatic characteristics of these cities that can detect potential factors
that could justify such high levels of radiation and 3) to evaluate the incidence of
photodermatoses (FTD) observed in La Paz, seeking its possible association with climatic
factors. The information on FTD cases in the city of La Paz was collected at the Central
Polyclinic of the Hospital "Caja Nacional de Salud" (CNS). The R-UV information was
obtained by Brewer spectrophotometers, installed in both locations. Regarding the health area,
the generalized estimation equations were used to determine the relative risk of FTD by sex
and age group and so the incidence rates of FTD were evaluated. About the intensity of the RUV,
it was carried out a validation of the information collected by the spectrophotometers
through modeling. It was observed that, regardless of the time of the year, around midday,
IUV records corresponded to the "Very High and Extreme" scales in the two cities. The DEM
for phototypes IV (450 Jm-2) was reached already in the first two hours of the day. In
summers, the DEA reached a maximum of 12,950 Jm-2 in La Paz and 7,546 Jm-2 in Natal. In
La Paz, there were 12,153 cases of FTD, of which 63.7% were female. The average Incidence
Rate (TI) was 31 cases per 100,000 inhabitants, showing a 4.7 times higher risk in the elderly
compared to the 0 to 4 year age range. One of the main difficulties in the development of this
research was the access to health information in Natal in a reference hospital (Hospital
Universit?rio Onofre Lopes - HUOL-UFRN) due to the research would have to be submitted
to an ethics committee for evaluation and / or approval. However, there was no guarantee of
approval. In order to not postpone the study, it was decided to restrict the analysis of the
clinical cases only to the city of La Paz. Concerning the health of the population in La Paz it
is emphasized that the incidence of FTD in the female sex is greater in relation to the male,
with special emphasis on the age group of 15 to 59 years. It is concluded that there is a need
to adopt educational policies and strategies for individual protection, both in La Paz and
Natal, due to the exposure of the populations of these cities to the high fluxes of R-UV
observed in soil.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24952 |
| Date | 15 December 2017 |
| Creators | Coariti, Jaime Rodriguez |
| Contributors | 14260192892, Mendes, David, 43298990272, Leme, Neusa Maria Paes, 87270790825, Silva, Francisco Raimundo da, 09046232468, Correa, Marcelo de Paula, 10125922353, Spyrides, Maria Helena Constantino, Fernandez, Jos? Henrique |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM CI?NCIAS CLIM?TICAS, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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