Abstract
espanolIntroduccion: La interpretacion de la prueba de esfuerzo cardiopulmonar (PECP) en cardiopatias congenitas representa undesafio, ya que estas constituyen un grupo amplio con diferentes grados de gravedad.Objetivos: Obtener en nuestro centro valores de referencia para las variables medidas mediante la PECP en adolescentes yadultos con cardiopatias congenitas, con el objetivo de poder comparar entre pares los resultados esperados de la PECP segunedad, sexo e igual patologia.Material y Metodos: Se realizaron 799 PECP en 473 pacientes mayores de 17 anos con distintas cardiopatias. Variables estudiadas:VO2 pico (ml/kg/min), % predicho de VO2 pico, duracion en segundos de la prueba (discriminada por sexo), VE/VCO2slope y coeficiente R para el total de las pruebas. Analisis estadistico: media y desvio estandar para cada variable, T test paralas estudiadas por sexo.Resultados: El VO2 pico (ml/kg/min), el % predicho del VO2 pico y la duracion de la prueba disminuyeron conforme aumento lagravedad de la cardiopatia. El % predicho de VO2 pico corrige los valores de VO2 ml/kg/min por edad y sexo, por lo que constituyeun dato mas util para la evaluacion. El coeficiente R mayor que 1,1 indica que los pacientes realizaron una prueba maxima.El VE/VCO2 slope esta aumentado en las cardiopatias graves.Conclusiones: Los valores de referencia de la PECP para las distintas cardiopatias congenitas son fundamentales, pues nospermiten comparar pacientes con igual patologia. El % predicho de VO2 pico parece ser el dato mas util para este fin. EnglishBackground: The interpretation of cardiopulmonary exercise testing (CPET) in congenital heart diseases represents a challenge,since they constitute a large group of anomalies with different degrees of severity.Objectives: The aim of this study was to obtain reference values of CPET variables in adolescents and adults with congenitalheart diseases in our center, to compare between peers the expected results of CPET according to age, gender and the samepathology.Methods: A total of 799 tests were performed in 473 patients older than 17 years with different congenital heart diseases.Variables studied were peak VO2 (ml/kg/min), percent-predicted peak VO2, test duration in seconds (discriminated by gender),VE/VCO2 slope and R coefficient for all the tests. Statistical analyses were conducted using mean and standard deviation foreach variable and Student’s t test for those studied by gender.Results: Peak VO2 (ml/kg/min), percent-predicted peak VO2, and test duration decreased as the severity of heart diseasesincreased. The percent-predicted peak VO2 corrects VO2 ml/kg/min values for age and sex, so it becomes a more useful variablefor evaluation. An R coefficient greater than 1.1 indicates that patients performed a maximal test. The VE/VCO2 slopeis increased in severe heart diseases.Conclusions: Reference CPET values for the different congenital heart diseases are essential, since they allow us to comparepatients with the same pathology. The percent-predicted peak VO2 seems to be the most useful variable for this purpose.
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