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Original article
DOI: 10.1016/j.rec.2020.12.001
Available online 2 January 2021
Trend in Spanish cardiology research and global comparative analysis of major topics
Evolución de la investigación cardiológica española y análisis comparativo mundial de temas de especial relevancia
Francisco J. Chorroa,b,c,
Corresponding author

Corresponding author: Servicio de Cardiología, Hospital Clínico Universitario de Valencia, Avda. Blasco Ibáñez 17, 46010 Valencia, Spain.
, Adolfo Alonso-Arroyod,e, Rafael Aleixandre-Benavente,f
a Servicio de Cardiología, Hospital Clínico Universitario, Departamento de Medicina, Universitat de València, Valencia, Spain
b Instituto de Investigación Sanitaria INCLIVA, Valencia, Spain
c Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Spain
d Departamento de Historia de la Ciencia y Documentación, Universitat de València, Valencia, Spain
e Unidad de Investigación e Información Social y Sanitaria (UISYS), Universitat de València, Valencia, Spain
f INGENIO, CSIC-Universitat Politècnica de València, Valencia, Spain
Received 09 May 2020. Accepted 15 September 2020
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Tables (5)
Table 1. Search strategies used in each of the chosen topics
Table 2. Number of global and Spanish cardiovascular articles, percentages, and number of years between the first global articles and the first Spanish ones (lag)
Table 3. Number of bibliographic citations generated by authors from Spanish institutions and number of citations per article corresponding to each chosen topic. The table shows the number of articles in which the keywords were included and their percentage in relation to the total
Table 4. Journal with the highest number of articles (values in parentheses), the most bibliographic citations (values in parentheses), and the highest citation/article quotient (values in parentheses) in relation to each chosen topic
Table 5. Expenditure on R+D or on health, expressed as a percentage of the gross domestic product (GDP), and the number of researchers working on R+D in a selection of European and other countries
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Additional material (2)
Introduction and objectives

We used bibliometric techniques to analyze the participation of Spanish institutions in research on major cardiovascular topics during the last 4 decades.


Bibliometric indicators of production, collaboration and impact were obtained from the Science Citation Index Expanded (SCIE) database. Search strategies were used in major topics and institutional collaboration networks were identified, represented using the Kamada-Kawai algorithm.


Global cardiovascular publications doubled from 2000 to 2018. In 2018, those by Spanish authors represented 2.33%, with a participation of between 7% and 1.84%, depending on the topics analyzed. The offset with respect to global production was between 0 and 7 years. Annual growth rates were higher in more recent topics. Revista Española de Cardiología published the largest number of articles from Spanish institutions. The journals generating the highest number of citations in the chosen topics were the Journal of the American College of Cardiology, Europace, and the European Heart Journal. Analysis of collaboration revealed a close interrelation between Spanish and foreign institutions, as well as groups with high production publishing independently.


The analysis disaggregated by subject showed the sustained growth of Spanish cardiovascular scientific production and more rapid growth in recently appearing topics. Collaboration networks showed a high degree of interrelation between Spanish and foreign institutions, including hospitals, universities, research institutes, and scientific societies.

Cardiovascular scientific production
Collaboration networks
Introducción y objetivos

Se utilizan técnicas bibliométricas para analizar la participación de instituciones españolas en la investigación sobre temas relevantes en el ámbito cardiovascular durante las últimas 4 décadas.


Se obtienen indicadores bibliométricos de producción, colaboración e impacto a partir de la base de datos Science Citation Index Expanded (SCIE). Se utilizan estrategias de búsqueda en temas relevantes y se identifican las redes de colaboración institucional, que se representan utilizando el algoritmo de Kamada-Kawai.


Las publicaciones cardiovasculares en el mundo se han duplicado entre 2000 y 2018. Actualmente, las de autores españoles representan el 2,33%, con una participación entre el 7 y el 1,84%, según los temas considerados. El desfase respecto a la producción mundial está entre 0 y 7 años. Las tasas de crecimiento anual son mayores en los temas analizados de aparición más reciente. Revista Española de Cardiología ha publicado el mayor número de artículos de instituciones españolas. Las revistas que han generado mayor número de citas en los temas elegidos son Journal of American College of Cardiology, Europace y European Heart Journal. El análisis de la colaboración revela una gran interrelación entre instituciones españolas y extranjeras, así como grupos con gran producción que publican de manera autónoma.


El análisis desagregado por temas muestra que el crecimiento de la producción científica cardiovascular española es constante, con mayores tasas de incremento en los temas más recientes. Las redes de colaboración muestran un alto grado de interrelación entre instituciones españolas y extranjeras, que abarca centros hospitalarios, universidades, institutos de investigación y sociedades científicas.

Palabras clave:
Producción científica cardiovascular
Redes de colaboración


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