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ResumoObjetivos: Este estudo de caso-controle teve o objetivo de avaliar o pH nasofaríngeo em crianças com pHmetria normal ou anormal em dois grupos de pacientes: 1) crianças com sintomas gastrintestinais; e 2) crianças com sintomas respiratórios. AbstractObjectives: The aim of this case-control study was to evaluate the nasopharyngeal pH (NasopH) in children with normal or abnormal pH-metry in two groups of patients: 1) children presenting gastroenterological symptoms; and 2) children with chronic respiratory symptoms. Methods: From February 2004 to January 2005, all consecutivepatients referred for 24-hour pH-metry and in whom gastroesophageal reflux disease was suspected were enrolled in a prospective study. They were assigned to four groups: gastroenterological symptoms with normal (A) or abnormal (B) pH-metries (GG), and chronic respiratory symptoms with normal (C) or abnormal (D) pH-metries (RG). NasopH was measured for 5 minutes, before the 24-hour test was performed.Results: Thirty-eight pH-metry tests were included (20 in the RG and 18 in the GG). Abnormal pH-metry results were observed in 11 patients in the GG and in 12 in the RG. NasopH means were 6.3273 and 5.6917, respectively (p < 0.0001). Average nasopharyngeal pH was 5.6917 among the 12 RG patients with abnormal pH-metry results and 6.5000 among the remaining eight patients with normal test results (p = 0.0006).Analysis of the RG with a receiver operating characteristic (ROC) curve showed pH of 5.8 as cutoff point (sensitivity of 91.7% and specificity of 87.5%). The area below the ROC curve was 0.870. Conclusions:Nasopharyngeal pH is significantly lower among patients in the RG presenting abnormal pH-metry results. A 5.8 NasopH has good sensitivity and specificity and can be used as a screening test in patients with chronic respiratory diseases to select those for whom conventional 24-hour pH-metry is indicated. J Pediatr (Rio J). 2007;83(3):225-232:Gastroesophageal reflux/ complications/diagnosis, child, evaluation studies, nasopharynx, esophageal pH monitoring.

Objectives: The aim of this case-control study was to evaluate the nasopharyngeal pH (NasopH) in children with normal or abnormal pH-metry in two groups of patients: 1) children presenting gastroenterological symptoms; and 2) children with chronic respiratory symptoms. Methods:From February 2004 to January 2005, all consecutive patients referred for 24-hour pH-metry and in whom gastroesophageal reflux disease was suspected were enrolled in a prospective study. They were assigned to four groups: gastroenterological symptoms with normal (A) or abnormal (B) pH-metries (GG), and chronic respiratory symptoms with normal (C) or abnormal (D) pH-metries (RG). NasopH was measured for 5 minutes, before the 24-hour test was performed.Results: Thirty-eight pH-metry tests were included (20 in the RG and 18 in the GG). Abnormal pH-metry results were observed in 11 patients in the GG and in 12 in the RG. NasopH means were 6.3273 and 5.6917, respectively (p < 0.0001). Average nasopharyngeal pH was 5.6917 among the 12 RG patients with abnormal pH-metry results and 6.5000 among the remaining eight patients with normal test results (p = 0.0006). Analysis of the RG with a receiver operating characteristic (ROC) curve showed pH of 5.8 as cutoff point (sensitivity of 91.7% and specificity of 87.5%).The area below the ROC curve was 0.870. Conclusions:Nasopharyngeal pH is significantly lower among patients in the RG presenting abnormal pH-metry results. A 5.8 NasopH has good sensitivity and specificity and can be used as a screening test in patients with chronic respiratory diseases to select those for whom conventional 24-hour pH-metry is indicated.J Pediatr (Rio J). 2007;83(3):225-232: Gastroesophageal reflux/complications/diagnosis, child, evaluation studies, nasopharynx, esophageal pH monitoring.

O Comitê de Ética em Pesquisa - CEP - do Instituto de Puericultura e Pediatria Martagão Gesteira - IPPMG - está completando vinte e dois anos de atuação contínua. O IPPMG é uma unidade hospitalar pediátrica pertencente à Universidade Federal do Rio de Janeiro - UFRJ -, onde são desenvolvidas atividades de assistência, ensino, extensão e pesquisa. Neste artigo, descreve-se o seu processo de estruturação e funcionamento desde o início de suas atividades em 2000 até setembro de 2022. Seu histórico foi obtido por meio de entrevista com o primeiro coordenador, professor Marcelo Land, e registros do comitê. Foi determinado o quantitativo de projetos aprovados a cada ano, no período de 2001 a setembro de 2022. Por meio da Plataforma Brasil, no período entre 2018 e agosto de 2022, foi determinado o tempo dispendido entre a entrada do projeto original ou emenda e o resultado da avaliação. Obteve-se a média e desvio padrão, bem como o número mínimo e máximo de dias até a emissão do parecer. De 2001 a 2022, foram aprovados 1.128 projetos de pesquisa pelo CEP IPPMG/UFRJ. De 2018 a 2021, foram emitidos 326 pareceres consubstanciados com aprovação média de 65% protocolos de pesquisa a cada ano. O tempo máximo de dias para a emissão de parecer caiu ao longo desse período, de 167 dias em 2018 a 84 dias em 2021, sendo maior o tempo médio para emissão de parecer de não aprovação em todos os anos. Em 21 anos de existência, o CEP IPPMG/UFRJ teve um volume expressivo de pareceres emitidos, com um tempo médio para emissão de parecer constante, com demanda de um tempo maior para análise nos projetos não aprovados. Representam desafios o grande volume de investigações avaliadas pelo CEP do IPPMG/UFRJ, sua complexidade e a vulnerabilidade da população que participa de pesquisas na instituição.