Heart Failure Reviews

, Volume 17, Issue 1, pp 97–105

Cardiac resynchronization therapy: the issue of non-response

  • Luigi Padeletti
  • Alessandro Paoletti Perini
  • Edoardo Gronda
Article

DOI: 10.1007/s10741-011-9250-6

Cite this article as:
Padeletti, L., Paoletti Perini, A. & Gronda, E. Heart Fail Rev (2012) 17: 97. doi:10.1007/s10741-011-9250-6

Abstract

Cardiac resynchronization therapy reduces mortality and morbidity in heart failure patients with wide QRS and severe impairment of left ventricular systolic function, who are symptomatic despite optimal medical therapy. However, a high percentage of patients fail to show clinical or echocardiographic response to this treatment. Beyond current selection criteria, other elements, such as QRS duration and morphology, concomitant medical therapy, degree of right ventricle dysfunction, myocardial viability, presence of left ventricular dyssynchrony, and associated renal dysfunction, play a crucial role in modulating the response to cardiac resynchronization. Consequently, they should be part of the standard pre-implant evaluation, as they could be used to identify patients who are very unlikely to be responders.

Keywords

Cardiac resynchronization therapy Non-responders QRS morphology Myocardial dyssynchrony Myocardial viability Right ventricular dysfunction Renal dysfunction 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Luigi Padeletti
    • 1
  • Alessandro Paoletti Perini
    • 1
  • Edoardo Gronda
    • 2
  1. 1.Istituto di Clinica Medica e CardiologiaUniversità degli Studi di FirenzeFlorenceItaly
  2. 2.FESC Gruppo Multimedica, IRCCS Sesto San GiovanniMilanItaly

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