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        "resumen" => "<span class="elsevierStyleSectionTitle">Background</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Methicillin-resistant <span class="elsevierStyleItalic">Staphylococcus aureus</span> &#40;MRSA&#41; plays a well-recognised pathogenic role in cystic fibrosis &#40;CF&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Aims</span><p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">To evaluate the prevalence and incidence of colonisation by MRSA&#44; clinical impact of MRSA colonisation &#40;year after first MRSA isolation&#41;&#44; risk factors and pattern of antimicrobial resistance&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Retrospective review of paediatric CF patients colonised with MRSA followed-up at the CF Unit of Hospital de Santa Maria 2003&#8211;2007&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Twelve of the 60 patients followed-up during this period were MRSA-positive at some time &#40;chronic colonisation in 3 patients&#41;&#46; Mean age at acquisition was 9 years 10 months and mean time interval between CF diagnosis and MRSA acquisition 5 years 7 months&#46;</p><p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">An important rise in MRSA colonisation prevalence and incidence was observed&#44; with the highest rate seen in 2007 &#40;prevalence 14&#46;3&#37; and incidence 8&#46;9&#37;&#41;&#46;</p><p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Four patients had received anti-staphylococcal prophylaxis with flucloxacillin&#46;</p><p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">An increase in the total number of in-patient days was observed in four patients &#40;two with chronic colonisation&#41;&#46; Deterioration in lung function was seen in five patients &#40;including the three patients with chronic colonisation&#41;&#46; Only one patient had a decrease in body mass index percentile&#46;</p><p id="spar0080" class="elsevierStyleSimplePara elsevierViewall">Resistance to clindamycin and rifampin was the most frequently seen&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0085" class="elsevierStyleSimplePara elsevierViewall">This study revealed significant clinical deterioration in patients with chronic colonisation by MRSA&#44; reinforcing the importance of effective and timely decolonisation strategies&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Introdu&#231;&#227;o</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Ao <span class="elsevierStyleItalic">Staphylococcus</span> aureus resistente &#224; meticilina &#40;MRSA&#41; &#233; classicamente reconhecido um papel patog&#233;nico no &#226;mbito da fibrose qu&#237;stica &#40;FQ&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Objectivos</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Avalia&#231;&#227;o da evolu&#231;&#227;o da preval&#234;ncia e incid&#234;ncia da coloniza&#231;&#227;o por MRSA&#44; impacto cl&#237;nico no ano ap&#243;s o primeiro isolamento&#44; factores de risco e padr&#227;o de resist&#234;ncia antimicrobiana&#46;</p> <span class="elsevierStyleSectionTitle">M&#233;todos</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Estudo retrospectivo dos doentes pedi&#225;tricos colonizados por MRSA seguidos no centro de FQ do Hospital de Santa Maria de 2003 a 2007&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">O MRSA foi isolado em secre&#231;&#245;es respirat&#243;rias de 12 dos 60 doentes seguidos durante este per&#237;odo &#40;coloniza&#231;&#227;o cr&#243;nica em 3 doentes&#41;&#46; A idade m&#233;dia &#224; data do primeiro isolamento foi de 9 anos e 10 meses e o tempo m&#233;dio entre o diagn&#243;stico de FQ e a aquisi&#231;&#227;o de MRSA de 5 anos e 7 meses&#46;</p><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Verificou-se um aumento da preval&#234;ncia e incid&#234;ncia de coloniza&#231;&#227;o por MRSA&#44; com um m&#225;ximo atingido em 2007 &#40;preval&#234;ncia 14&#44;3&#37; e incid&#234;ncia 8&#44;9&#37;&#41;&#46; Quatro doentes cumpriram antibioticoterapia profil&#225;ctica antiestafiloc&#243;cica com flucloxacilina&#46;</p><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">No ano ap&#243;s o primeiro isolamento de MRSA&#44; constatou-se um aumento do n&#250;mero de dias de internamento em 4 doentes &#40;2 com coloniza&#231;&#227;o cr&#243;nica&#41; e deteriora&#231;&#227;o da fun&#231;&#227;o pulmonar em 5&#44; incluindo a totalidade dos doentes com coloniza&#231;&#227;o cr&#243;nica&#46; Apenas um doente apresentou diminui&#231;&#227;o de percentil de &#237;ndice de massa corporal&#46;</p><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">As resist&#234;ncias mais frequentemente encontradas foram &#224; rifampicina e &#224; clindamicina&#46;</p> <span class="elsevierStyleSectionTitle">Conclus&#245;es</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Este estudo revelou ocorr&#234;ncia de deteriora&#231;&#227;o cl&#237;nica relevante em doentes com coloniza&#231;&#227;o cr&#243;nica por MRSA&#44; refor&#231;ando a import&#226;ncia da implementa&#231;&#227;o de estrat&#233;gias eficazes e precoces de erradica&#231;&#227;o&#46;</p>"
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Vol. 16. Issue 4.
Pages 527-542 (July - August 2010)
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Vol. 16. Issue 4.
Pages 527-542 (July - August 2010)
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The impact of methicillin-resistant Staphylococcus aureus colonisation on paediatric cystic fibrosis patients’ morbidity
Colonização por Staphylococcus aureus resistente à meticilina: Que impacto na morbilidade de doentes pediátricos com fibrose quística?
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Joana Fermeiro1,
Corresponding author
jsnfermeiro@hotmail.com

Correspondence to/Correspondência: Departamento da Criança e da Família do Hospital de Santa Maria, Avenida Professor Egas Moniz, 1649-035 Lisboa.
, Patrícia Reis1, Susana Castanhinha1, Luísa Pereira2, Celeste Barreto3, Doutor João Gomes-Pedro4
1 Interna do Internato Complementar de Pediatria/Resident, Paediatrics
2 Assistente Hospitalar Graduada de Pediatria/Consultant, Paediatrics specialist
3 Chefe de Serviço de Pediatria/Head, Paediatrics Unit
4 Centro Especializado de Fibrose Quística/Cystic Fibrosis Unit, Departamento da Criança e da Família do Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE
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Abstract
Background

Methicillin-resistant Staphylococcus aureus (MRSA) plays a well-recognised pathogenic role in cystic fibrosis (CF).

Aims

To evaluate the prevalence and incidence of colonisation by MRSA, clinical impact of MRSA colonisation (year after first MRSA isolation), risk factors and pattern of antimicrobial resistance.

Methods

Retrospective review of paediatric CF patients colonised with MRSA followed-up at the CF Unit of Hospital de Santa Maria 2003–2007.

Results

Twelve of the 60 patients followed-up during this period were MRSA-positive at some time (chronic colonisation in 3 patients). Mean age at acquisition was 9 years 10 months and mean time interval between CF diagnosis and MRSA acquisition 5 years 7 months.

An important rise in MRSA colonisation prevalence and incidence was observed, with the highest rate seen in 2007 (prevalence 14.3% and incidence 8.9%).

Four patients had received anti-staphylococcal prophylaxis with flucloxacillin.

An increase in the total number of in-patient days was observed in four patients (two with chronic colonisation). Deterioration in lung function was seen in five patients (including the three patients with chronic colonisation). Only one patient had a decrease in body mass index percentile.

Resistance to clindamycin and rifampin was the most frequently seen.

Conclusions

This study revealed significant clinical deterioration in patients with chronic colonisation by MRSA, reinforcing the importance of effective and timely decolonisation strategies.

Key-words:
Cystic fibrosis
MRSA
decolonisation
Resumo
Introdução

Ao Staphylococcus aureus resistente à meticilina (MRSA) é classicamente reconhecido um papel patogénico no âmbito da fibrose quística (FQ).

Objectivos

Avaliação da evolução da prevalência e incidência da colonização por MRSA, impacto clínico no ano após o primeiro isolamento, factores de risco e padrão de resistência antimicrobiana.

Métodos

Estudo retrospectivo dos doentes pediátricos colonizados por MRSA seguidos no centro de FQ do Hospital de Santa Maria de 2003 a 2007.

Resultados

O MRSA foi isolado em secreções respiratórias de 12 dos 60 doentes seguidos durante este período (colonização crónica em 3 doentes). A idade média à data do primeiro isolamento foi de 9 anos e 10 meses e o tempo médio entre o diagnóstico de FQ e a aquisição de MRSA de 5 anos e 7 meses.

Verificou-se um aumento da prevalência e incidência de colonização por MRSA, com um máximo atingido em 2007 (prevalência 14,3% e incidência 8,9%). Quatro doentes cumpriram antibioticoterapia profiláctica antiestafilocócica com flucloxacilina.

No ano após o primeiro isolamento de MRSA, constatou-se um aumento do número de dias de internamento em 4 doentes (2 com colonização crónica) e deterioração da função pulmonar em 5, incluindo a totalidade dos doentes com colonização crónica. Apenas um doente apresentou diminuição de percentil de índice de massa corporal.

As resistências mais frequentemente encontradas foram à rifampicina e à clindamicina.

Conclusões

Este estudo revelou ocorrência de deterioração clínica relevante em doentes com colonização crónica por MRSA, reforçando a importância da implementação de estratégias eficazes e precoces de erradicação.

Palavras-chave:
Fibrose quística
MRSA
erradicação
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