Living FRIendly Summaries of the Body of Evidence using Epistemonikos (FRISBEE)
Medwave 2017; 17(Suppl1):e6853 doi: 10.5867/medwave.2017.6853
Are statins beneficial for chronic heart failure? - First update
Carmen Rain, Gabriel Rada
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Resumen

Este resumen Epistemonikos (Living FRISBEE: Living FRIendly Summary of the Body of Evidence using Epistemonikos) es una actualización del resumen publicado en mayo de 2015, basado en nueve revisiones sistemáticas aparecidas con posterioridad.

Si bien las estatinas disminuyen parámetros inflamatorios y mejoran algunos parámetros ecocardiográficos en pacientes con insuficiencia cardiaca, no está claro si esto se traduce en beneficios clínicamente relevantes. Utilizando la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en múltiples bases de datos, identificamos 15 revisiones sistemáticas que en conjunto incluyen 25 estudios aleatorizados que responden la pregunta de interés. Extrajimos los datos, realizamos un metanálisis y preparamos tablas de resumen de los resultados utilizando el método GRADE. Concluimos que las estatinas no disminuyen la mortalidad en pacientes con insuficiencia cardiaca. Podrían tener un efecto pequeño sobre el riesgo de hospitalización, pero la certeza de esta evidencia es baja.


 
Sobre la actualización

Este resumen Epistemonikos (Living FRISBEE: Living FRIendly Summary of the Body of Evidence using Epistemonikos) es una actualización del resumen publicado en mayo de 2015 (doi: 10.5867/medwave.2015.04.6140), basado en nueve revisiones sistemáticas aparecidas con posterioridad.

La nueva evidencia incorporada en este resumen no lleva a cambios en la certeza de la evidencia de los desenlaces, los mensajes clave ni las consideraciones para la toma de decisión.

Problema

Además de su efecto hipolipemiante, se postula que las estatinas poseen efectos pleiotrópicos, tales como propiedades antihipertróficas, antifibróticas, antioxidantes e inhibitorias de la activación neurohumoral, todo lo cual forma parte de la fisiopatología de la insuficiencia cardiaca. Algunos estudios han mostrado que podrían mejorar la fracción de eyección y disminuir los niveles de factores inflamatorios, sin embargo no está claro que esto se traduzca en un beneficio clínicamente relevante.

Métodos

Utilizamos la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en múltiples bases de datos, para identificar revisiones sistemáticas y sus estudios primarios incluidos. Con esta información generamos un resumen estructurado, siguiendo un formato preestablecido, que incluye mensajes clave, un resumen del conjunto de evidencia (presentado como matriz de evidencia en Epistemonikos), metanálisis del total de los estudios, tablas de resumen de resultados con el método GRADE, y tabla de otras consideraciones para la toma de decisión.

Mensajes clave

  • Las estatinas no disminuyen la mortalidad en pacientes con insuficiencia cardiaca.
  • Las estatinas podrían disminuir levemente las hospitalizaciones por falla cardiaca pero la certeza de la evidencia es baja.
  • El balance entre beneficios y riesgos para el uso de estatinas en pacientes con insuficiencia cardiaca que no tienen otra indicación es probablemente desfavorable.
Acerca del conjunto de evidencia para esta pregunta

Cuál es la evidencia. 
Véase matriz de evidencia en Epistemonikos más abajo.

Encontramos 15 revisiones sistemáticas [1],[2],[3],[4],[5],[6], [7],[8],[9],[10],[11],[12],[13],[14],[15] que incluyen 45 estudios primarios [16],[17],[18],[19],[20],[21],[22],[23], [24],[25],[26],[27],[28],[29],[30],[31],[32],[33],[34],[35], [36],[37],[38],[39],[40],[41],[42],[43],[44],[45],[46],[47], [48],[49],[50],[51],[52],[53],[54],[55],[56],[57],[58],[59], [60],[61],[62],[63],[64], de los cuales 25 corresponden a estudios controlados aleatorizados (reportados en 29 referencias) [17],[18],[20],[30],[31],[33],[34],[36],[40],[41], [45],[46],[48],[49],[50],[51],[52],[53],[54],[55],[56],[57], [58],[59],[61],[62],[63],[64]. Esta tabla y el resumen en general se basan en estos últimos.

Qué tipo de pacientes incluyeron los estudios

Los estudios incluyeron pacientes con insuficiencia cardiaca recibiendo tratamiento estándar, con representación de todas las etiologías. La mayoría de los estudios incluyó sólo pacientes con fracción de eyección disminuida, con excepción de tres estudios [36],[50],[57].

De acuerdo a la capacidad funcional según NYHA, cuatro estudios incluyeron pacientes con capacidad funcional I [40],[46],[48],[61], 23 estudios con capacidad funcional II [18],[31],[34],[36],[40],[41],[45],[46],[48],[49],[50], [53],[54],[55],[56],[57],[58],[59],[60],[61],[62],[63], [64], todos los estudios incluyeron capacidad funcional III y nueve incluyeron capacidad funcional IV [34],[36],[49], [53],[55],[58],[59],[63],[64].

El promedio de colesterol LDL osciló entre 96 y 167 mg/dL en los diferentes estudios. 

Qué tipo de intervenciones incluyeron los estudios

Dieciséis estudios evaluaron atorvastatina [34],[40],[41], [46],[48],[49],[50],[51],[52],[53],[55],[56],[60],[61], [62],[64], cinco rosuvastatina [18],[31],[36],[58],[59], uno cerivastatina [57], uno pivastatina [54] y dos simvastatina [45],[63].

La mayoría de los estudios compararon contra placebo, con excepción de 11 estudios que compararon con no-intervención [34],[48],[49],[50],[51],[52],[53],[54],[61], [62],[63].

Qué tipo de desenlaces midieron

Las distintas revisiones sistemáticas identificadas agruparon los desenlaces en:

  • Mortalidad por cualquier causa
  • Mortalidad cardiovascular
  • Hospitalización por falla cardiaca
  • Infarto al miocardio
  • Accidente cerebrovascular no fatal
  • Parámetros ecocardiográficos
  • Marcadores inflamatorios
  • Niveles de BNP (B-type natriuretic peptide)
  • Longitud de QT
  • Clasificación de NYHA 
Resumen de los resultados

La información sobre el efecto de las estatinas está basada en 25 estudios controlados aleatorizados. Diecisiete estudios midieron mortalidad por cualquier causa [36],[40],[45],[48],[49],[50],[51],[52],[54],[55],[56],[58],[59],[60],[61],[62],[63] y 14 estudios midieron hospitalización por falla cardiaca [36],[45],[48],[49],[50],[52],[54],[55],[56],[58],[59],[60],[61],[62]. El resumen de los resultados es el siguiente:

  • Las estatinas en pacientes con insuficiencia cardiaca no disminuyen la mortalidad. La certeza de la evidencia es alta.
  • Las estatinas podrían disminuir levemente las hospitalizaciones por falla cardiaca, pero la certeza de la evidencia es baja. 


Otras consideraciones para la toma de decisión

A quién se aplica y a quién no se aplica esta evidencia

  • Esta evidencia se aplica a pacientes con insuficiencia cardiaca crónica con fracción de eyección disminuida, sin distinción de etiología o capacidad funcional, y que no tengan una indicación clara por otro motivo.
  • No se aplica a pacientes que hayan sufrido un evento cardiovascular por enfermedad aterosclerótica, pues en estos casos es indiscutido el uso de estatinas como prevención secundaria.
  • Es difícil hacer un juicio sobre si algunos pacientes sin eventos coronarios previos incluidos en estos estudios deberían recibir estatinas por su nivel de colesterol. Es razonable evaluar caso a caso, considerando especialmente el riesgo cardiovascular individualizado.
Sobre los desenlaces incluidos en este resumen
  • Los desenlaces presentados en este resumen son aquellos considerados críticos para la toma de decisión en las principales guías clínicas, en las revisiones identificadas y a juicio de los autores de este resumen.
Balance riesgo/beneficio y certeza de la evidencia
  • El uso de estatinas constituye una intervención de bajo riesgo, con efectos adversos leves. Sin embargo, es difícil hacer un adecuado balance entre los beneficios de baja cuantía y los efectos adversos, ya que la certeza de la evidencia es baja.
  • Si el beneficio fuera certero, sería razonable inclinarse por esta intervención en quienes tengan un mayor riesgo de hospitalización y que no hayan presentado efectos adversos importantes.
Consideraciones de recursos
  • Las estatinas son una intervención de bajo costo. Sin embargo, es difícil hacer un adecuado balance entre los costos y los beneficios, ya que la certeza de la evidencia es baja. En todo caso, es poco probable que el costo sea un factor determinante en la decisión.
Diferencias entre este resumen y otras fuentes
  • Si bien las revisiones sistemáticas difieren en cuanto a sus conclusiones, e incluso algunas señalan un beneficio claro sobre la mortalidad [11], nuestro resumen coincide con la mayoría de ellas.
  • Este resumen es concordante con las principales guías clínicas que abordan esta pregunta [65],[66], las cuáles consideran que no existe beneficio en pacientes con insuficiencia cardiaca. 
¿Puede que cambie esta información en el futuro?
  • La probabilidad de que esta información cambie en el futuro es baja debido a la certeza de la evidencia existente
  • No identificamos estudios aleatorizados controlados en curso contestando esta pregunta, al menos de acuerdo a los registros de la International Controlled Trials Registry Platform de la Organización Mundial de la Salud. 
Cómo realizamos este resumen

Mediante métodos automatizados y colaborativos recopilamos toda la evidencia relevante para la pregunta de interés y la presentamos en una matriz de evidencia.

Siga el enlace para acceder a la versión interactiva: Estatinas para la insuficiencia cardiaca crónica

Notas

Si con posterioridad a la publicación de este resumen se publican nuevas revisiones sistemáticas sobre este tema, en la parte superior de la matriz se mostrará un aviso de “nueva evidencia”.  Si bien el proyecto contempla la actualización periódica de estos resúmenes, los usuarios están invitados a comentar en Medwave o contactar a los autores mediante correo electrónico si creen que hay evidencia que motive una actualización más rápida.

Luego de crear una cuenta en Epistemonikos, al guardar las matrices recibirá notificaciones automáticas cada vez que exista nueva evidencia que potencialmente responda a esta pregunta. El detalle de los métodos para elaborar este resumen están descritos aquí: http://dx.doi.org/10.5867/medwave.2014.06.5997.

La Fundación Epistemonikos es una organización que busca acercar la información a quienes toman decisiones en salud, mediante el uso de tecnologías. Su principal desarrollo es la base de datos Epistemonikos (www.epistemonikos.org).

Los resúmenes de evidencia siguen un riguroso proceso de revisión por pares interno.

Declaración de conflictos de intereses
Los autores declaran no tener conflictos de intereses con la materia de este artículo.

Licencia Creative Commons Esta obra de Medwave está bajo una licencia Creative Commons Atribución-NoComercial 3.0 Unported. Esta licencia permite el uso, distribución y reproducción del artículo en cualquier medio, siempre y cuando se otorgue el crédito correspondiente al autor del artículo y al medio en que se publica, en este caso, Medwave.

 

Este resumen Epistemonikos (Living FRISBEE: Living FRIendly Summary of the Body of Evidence using Epistemonikos) es una actualización del resumen publicado en mayo de 2015, basado en nueve revisiones sistemáticas aparecidas con posterioridad.

Si bien las estatinas disminuyen parámetros inflamatorios y mejoran algunos parámetros ecocardiográficos en pacientes con insuficiencia cardiaca, no está claro si esto se traduce en beneficios clínicamente relevantes. Utilizando la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en múltiples bases de datos, identificamos 15 revisiones sistemáticas que en conjunto incluyen 25 estudios aleatorizados que responden la pregunta de interés. Extrajimos los datos, realizamos un metanálisis y preparamos tablas de resumen de los resultados utilizando el método GRADE. Concluimos que las estatinas no disminuyen la mortalidad en pacientes con insuficiencia cardiaca. Podrían tener un efecto pequeño sobre el riesgo de hospitalización, pero la certeza de esta evidencia es baja.

Authors: Carmen Rain[1], Gabriel Rada[1,2,3,4,5]

Affiliation:
[1] Proyecto Epistemonikos, Santiago, Chile
[2] Programa de Salud Basada en Evidencia, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
[3] Departamento de Medicina Interna, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
[4] GRADE working group
[5] The Cochrane Collaboration

E-mail: radagabriel@epistemonikos.org

Author address:
[1] Facultad de Medicina
Pontificia Universidad Católica de Chile
Diagonal Paraguay 476
Santiago Centro
Chile

Citation: Rain C, Rada G. Are statins beneficial for chronic heart failure? - First update. Medwave 2017; 17(Suppl1):e6853 doi: 10.5867/medwave.2017.6853

Submission date: 22/12/2016

Acceptance date: 23/12/2016

Publication date: 25/4/2017

PubMed record

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Vrtovec B, Okrajsek R, Golicnik A, Ferjan M, Starc V, Radovancevic B. Atorvastatin therapy increases heart rate variability, decreases QT variability, and shortens QTc interval duration in patients with advanced chronic heart failure. J Card Fail. 2005 Dec;11(9):684-90 | PubMed |

Vrtovec B, Okrajsek R, Golicnik A, Ferjan M, Starc V, Schlegel TT, et al. Atorvastatin therapy may reduce the incidence of sudden cardiac death in patients with advanced chronic heart failure. J Card Fail. 2008 Mar;14(2):140-4 | CrossRef | PubMed |

Tousoulis D, Antoniades C, Vassiliadou C, Toutouza M, Pitsavos C, Tentolouris C, et al. Effects of combined administration of low dose atorvastatin and vitamin E on inflammatory markers and endothelial function in patients with heart failure. Eur J Heart Fail. 2005 Dec;7(7):1126-32 | PubMed |

Takano H, Mizuma H, Kuwabara Y, Sato Y, Shindo S, Kotooka N, et al; PEARL Study Investigators. Effects of pitavastatin in Japanese patients with chronic heart failure: the Pitavastatin Heart Failure Study (PEARL Study). Circ J. 2013;77(4):917-25 | PubMed |

Sola S, Mir MQ, Lerakis S, Tandon N, Khan BV. Atorvastatin improves left ventricular systolic function and serum markers of inflammation in nonischemic heart failure. J Am Coll Cardiol. 2006 Jan 17;47(2):332-7 | PubMed |

Mozaffarian D, Minami E, Letterer RA, Lawler RL, McDonald GB, Levy WC. The effects of atorvastatin (10 mg) on systemic inflammation in heart failure. Am J Cardiol. 2005 Dec 15;96(12):1699-704 | PubMed |

Laufs U, Wassmann S, Schackmann S, Heeschen C, Böhm M, Nickenig G. Beneficial effects of statins in patients with non-ischemic heart failure. Z Kardiol. 2004 Feb;93(2):103-8 | PubMed |

Krum H, Ashton E, Reid C, Kalff V, Rogers J, Amarena J, et al. Double-blind, randomized, placebo-controlled study of high-dose HMG CoA reductase inhibitor therapy on ventricular remodeling, pro-inflammatory cytokines and neurohormonal parameters in patients with chronic systolic heart failure. J Card Fail. 2007 Feb;13(1):1-7 | PubMed |

Kjekshus J, Apetrei E, Barrios V, Böhm M, Cleland JG, Cornel JH, et al; CORONA Group. Rosuvastatin in older patients with systolic heart failure. N Engl J Med. 2007 Nov 29;357(22):2248-61 | PubMed |

Hamaad A, Sosin M, Lip GY, MacFadyen RJ. Short-term adjuvant atorvastatin improves frequency domain indices of heart rate variability in stable systolic heart failure. Cardiovasc Drugs Ther. 2005 May;19(3):183-7 | PubMed |

Bielecka-Dabrowa A, Goch JH, Mikhailidis DP, Rysz J, Maciejewski M, Banach M. The influence of atorvastatin on parameters of inflammation and function of the left ventricle in patients with dilated cardiomyopathy. Med Sci Monit. 2009 Dec;15(12):MS12-23 | PubMed |

Abulhul E, McDonald K, Martos R, Phelan D, Spiers JP, Hennessy M, et al. Long-term statin therapy in patients with systolic heart failure and normal cholesterol: effects on elevated serum markers of collagen turnover, inflammation, and B-type natriuretic peptide. Clin Ther. 2012 Jan;34(1):91-100 | CrossRef | PubMed |

Hong YJ, Jeong MH, Hyun DW, Hur SH, Kim KB, Kim W, et al. Prognostic significance of simvastatin therapy in patients with ischemic heart failure who underwent percutaneous coronary intervention for acute myocardial infarction. Am J Cardiol. 2005 Mar 1;95(5):619-22 | PubMed |

Liu M, Wang F, Wang Y, Jin R. Atorvastatin improves endothelial function and cardiac performance in patients with dilated cardiomyopathy: the role of inflammation. Cardiovasc Drugs Ther. 2009 Oct;23(5):369-76 | CrossRef | PubMed |

McMurray JJ, Adamopoulos S, Anker SD, Auricchio A, Böhm M, Dickstein K,et al; ESC Committee for Practice Guidelines.. ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure 2012: The Task Force for the Diagnosis and Treatment of Acute and Chronic Heart Failure 2012 of the European Society of Cardiology. Developed in collaboration with the Heart Failure Association (HFA) of the ESC. Eur Heart J. 2012 Jul;33(14):1787-847 | CrossRef | PubMed |

Yancy CW, Jessup M, Bozkurt B, Butler J, Casey DE, Drazner MH, et al. 2013 ACCF/AHA guideline for the management of heart failure: A report of the american college of cardiology foundation/american heart association task force on practice guidelines. Circulation. 2013;128(16):240–327