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- W2619127679 abstract "The sweat test (ST) measures chloride levels in sweat and is considered the gold standard for the diagnosis of cystic fibrosis (CF). However, the reliability of a ST depends on their being performed by experienced technicians and in accordance with strict guidelines. Our aim was to evaluate how sweat stimulation, sweat collection, and chloride measurement are performed at 14 centers (9 public centers and 5 private centers) that routinely perform STs in the state of São Paulo, which has the highest frequency of CF in Brazil.This was a cross-sectional cohort study, using a standardized questionnaire administered in loco to the staff responsible for conducting STs.No uniformity regarding the procedures was found among the centers. Most centers were noncompliant with the international guidelines, especially regarding the collection of sweat (the samples were insufficient in 10-50% of the subjects tested); availability of stimulation equipment (which was limited at 2 centers); modernity and certification of stimulation equipment (most of the equipment having been used for 3-23 years); and written protocols (which were lacking at 12 centers). Knowledge of ST guidelines was evaluated at only 1 center.Our results show that STs largely deviate from internationally accepted guidelines at the participating centers. Therefore, there is an urgent need for standardization of STs, training of qualified personnel, and acquisition/certification of suitable equipment. These are essential conditions for a reliable diagnosis of CF, especially with the increasing demand due to newborn screening nationwide, and for the assessment of a possible clinical benefit from the use of modulator drugs.O teste do suor (TS) mede os níveis de cloro no suor e é considerado o padrão ouro para o diagnóstico da fibrose cística (FC). Contudo, a confiabilidade do TS depende de sua realização por técnicos experientes e segundo diretrizes rígidas. Nosso objetivo foi avaliar como são realizadas a estimulação e coleta do suor e a dosagem de cloro em 14 centros (9 públicos e 5 privados) que realizam TS rotineiramente no estado de São Paulo, que possui a maior frequência de FC do Brasil.Estudo de coorte transversal utilizando um questionário padronizado aplicado in loco ao pessoal responsável pela realização dos TS.Não houve uniformidade entre os centros quanto aos procedimentos. A maioria dos centros não era aderente às diretrizes internacionais, especialmente quanto à coleta do suor (amostras insuficientes em 10-50% dos indivíduos testados), disponibilidade de equipamentos de estimulação (limitada em 2 centros), modernidade e certificação dos mesmos (a maioria utilizada há 3-23 anos) e protocolos escritos (ausentes em 12 centros). Avaliou-se o conhecimento sobre diretrizes para TS em apenas 1 centro.Nossos resultados mostram que, nos centros participantes, os TS estão muito distantes das diretrizes internacionalmente aceitas. Portanto, há necessidade urgente de padronização dos TS, de treinamento de pessoal qualificado e de aquisição/certificação de equipamentos adequados. Essas são condições essenciais para um diagnóstico confiável de FC, especialmente com a crescente demanda resultante da triagem neonatal em todo o país, e para a avaliação do possível benefício clínico do uso de moduladores." @default.
- W2619127679 created "2017-06-05" @default.
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- W2619127679 date "2017-04-01" @default.
- W2619127679 modified "2023-10-02" @default.
- W2619127679 title "Sweat test and cystic fibrosis: overview of test performance at public and private centers in the state of São Paulo, Brazil" @default.
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- W2619127679 doi "https://doi.org/10.1590/s1806-37562016000000076" @default.
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