Resumo Introdução: À medida que o conhecimento científico cresceu em biomedicina, também se tornou necessário o desenvolvimento de ferramentas para gerenciar e entender o corpo de evidências. Nesse sentido, a bibliometria tornou-se uma disciplina consolidada para a análise da atividade científica, possibilita a caracterização de um campo ou área de conhecimento específica através da quantificação das características bibliográficas das publicações científicas. Objetivo: Determinar os artigos mais citados na área de rinorreia e otorreia por líquido cefalorraquidiano. Método: As buscas foram feitas na plataforma Clarivate Analytics Web of Science, que inclui o banco de dados Medline. O período do estudo foi limitado a 1945–2018. Resultados: Os 101 artigos mais citados no campo da fístula liquórica foram publicados em 36 periódicos e as especialidades mais importantes que contribuíram para a literatura foram a neurocirurgia e a otorrinolaringologia. Dos 101 artigos mais citados, 70% foram publicados de 1990 a 2018, com dois períodos de alta produtividade científica: 1990 a 1999 e 2000 a 2009. No primeiro período, o principal tópico de interesse da pesquisa foi a cirurgia endoscópica do seio para fístulas liquóricas, enquanto de 2000 a 2009 os artigos se concentraram mais nos aspectos cirúrgicos das abordagens estendidas da base do crânio. Os artigos receberam 73 a 767 citações. O artigo principal, durante todo o período do estudo, foi ‘‘Uma nova técnica reconstrutiva após abordagens endonasais expandidas endoscópicas: retalho nasoseptal do pedículo vascular’’, de Hadad et al., publicado em 2006 no periódico Laryngoscope. Sua publicação representou um ponto de inflexão na literatura sobre fístula liquórica e cirurgia endoscópica da base do crânio e deu origem a inúmeras outras publicações de pesquisa. Conclusão: Diferentes inovações cirúrgicas no campo da fístula liquórica desencadearam dois períodos diferentes de intensa atividade científica. Otorrinolaringologia e neurocirurgia foram as especialidades dominantes. O tópico mais frequentemente estudado foi cirurgia endoscópica; outros incluíram características clínicas e de diagnóstico, cirurgia de neurinoma e fístula liquórica relacionado a fraturas do osso temporal.

Abstract Introduction: As scientific knowledge has grown in biomedicine, it has also become necessary to develop tools to manage and understand the body of evidence. In that sense, bibliometrics has become a consolidated discipline for analyzing scientific activity, enabling the characterization of a particular field or area of knowledge by means of the quantification of the bibliographic characteristics of scientific publications. Objective: The objective of this study was to determine the most frequently cited articles in the field of cerebrospinal fluid rhinorrhea and otorrhea. Methods: The searches took place on the Clarivate Analytics Web of Science platform, which includes the MEDLINE database. The study period was limited to 1945–2018. Results: The 101 most cited articles in the field of cerebrospinal fluid leak were published in 36 journals, and the most important specialties contributing to the literature were neurosurgery and otorhinolaryngology. Of the 101 top-cited articles, 70% were published from 1990 to 2018, with two distinct periods of high scientific productivity: 1990–1999 and 2000–2009. In the first period, the main topic of research interest was endoscopic sinus surgery for cerebrospinal fluid fistulas, whereas from 2000 to 2009, documents focused more on surgical aspects of extended skull base approaches. The articles received 73–767 citations. The top article over the whole study period was ‘‘A novel reconstructive technique after endoscopic expanded endonasal approaches: vascular pedicle nasoseptal flap’’ by Hadad et al., which was published 2006 in Laryngoscope. Its publication represented an inflection point in the literature on cerebrospinal fluid leak and endoscopic skull base surgery, and it gave rise to numerous other research publications. Conclusion: Different surgical innovations in the field of cerebrospinal fluid leak sparked two different periods of intense scientific activity. Otorhinolaryngology and neurosurgery were the dominant specialties. The most frequent topic studied was endoscopic surgery; others included clinical and diagnostic features, neurinoma surgery, and cerebrospinal fluid leak related to temporal bone fractures.

Objective: To determine the utilization rate of a dermatology service among the immigrant population and compare this rate with that among the autochthonous population. Methods: Over a 1-year period, data on all patients attended in the Dermatology Service of Health Department 19 in the autonomous community of Valencia were prospectively collected. Results: Of 39,160 consultations, 1,625 were made by immigrants (4.1%). Attendance for dermatologic emergencies was greater in immigrants than in the autochthonous population (7.7% vs 3.0%; p < 0.001), while surgical activity was lower in immigrants than in Spanish-born patients (2.6% vs 5%; p < 0.001). Demand for consultation in the immigrant population was 5.7 visits per 100 immigrants, lower than that in the autochthonous population (16.2). The standardized rate ratio was 0.34. North Africans (5.6 per 100 immigrants), East Europeans (4.8), sub-Saharan Africans (5.3) and Asians (4.2) consulted less than Latin Americans (8.5; p<0.001). Conclusions: Demand was lower in the immigrant than in the autochthonous population, and the utilization patters differed according to country.

Objetivos: Conocer la demanda asistencial en dermatología de la población inmigrante (PI) y compararla con la de la población autóctona (PA). Métodos: Durante un año, se recogió prospectivamente el número de enfermedades atendidas en dermatología en el Departamento de Salud 19 de la Comunidad Valenciana. Resultados: De 39.160 episodios, 1.625 fueron en PI (4,1%). La asistencia por urgencias fue mayor en PI que en PA (el 7,7 frente al 3,0%; p < 0,001) y la actividad quirúrgica en PI fue menor que en PA (el 2,6 frente al 5%; p < 0,001). La demanda en la PI fue de 5,7 episodios por 100 inmigrantes, inferior a la PA (16,2). La razón de tasas estandarizada fue de 0,34. Los pacientes del norte de África (5,6 por 100 inmigrantes), Europa del Este (4,8), África subsahariana (5,3) y Asia (4,2) consultaron menos que los latinoamericanos (8,5; p < 0,001). Conclusiones: La demanda en PI fue inferior a la PA y con un patrón de utilización diferente por países.

Objective: To determine the utilization rate of a dermatology service among the immigrant population and compare this rate with that among the autochthonous population. Methods: Over a 1-year period, data on all patients attended in the Dermatology Service of Health Department 19 in the autonomous community of Valencia were prospectively collected. Results: Of 39,160 consultations, 1,625 were made by immigrants (4.1%). Attendance for dermatologic emergencies was greater in immigrants than in the autochthonous population (7.7% vs 3.0%; p < 0.001), while surgical activity was lower in immigrants than in Spanish-born patients (2.6% vs 5%; p < 0.001). Demand for consultation in the immigrant population was 5.7 visits per 100 immigrants, lower than that in the autochthonous population (16.2). The standardized rate ratio was 0.34. North Africans (5.6 per 100 immigrants), East Europeans (4.8), sub-Saharan Africans (5.3) and Asians (4.2) consulted less than Latin Americans (8.5; p<0.001). Conclusions: Demand was lower in the immigrant than in the autochthonous population, and the utilization patters differed according to country.

Objetivos: Conocer la demanda asistencial en dermatología de la población inmigrante (PI) y compararla con la de la población autóctona (PA). Métodos: Durante un año, se recogió prospectivamente el número de enfermedades atendidas en dermatología en el Departamento de Salud 19 de la Comunidad Valenciana. Resultados: De 39.160 episodios, 1.625 fueron en PI (4,1%). La asistencia por urgencias fue mayor en PI que en PA (el 7,7 frente al 3,0%; p < 0,001) y la actividad quirúrgica en PI fue menor que en PA (el 2,6 frente al 5%; p < 0,001). La demanda en la PI fue de 5,7 episodios por 100 inmigrantes, inferior a la PA (16,2). La razón de tasas estandarizada fue de 0,34. Los pacientes del norte de África (5,6 por 100 inmigrantes), Europa del Este (4,8), África subsahariana (5,3) y Asia (4,2) consultaron menos que los latinoamericanos (8,5; p < 0,001). Conclusiones: La demanda en PI fue inferior a la PA y con un patrón de utilización diferente por países.