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Device therapy in Chagas disease heart failure

Reinaldo B Bestetti1, Augusto Cardinalli-Neto

  • 1UNAERP Medical School, 14096-430 Ribeirão Preto, Brazil. rbestetti@netsite.com.br

Expert Review of Cardiovascular Therapy
|November 30, 2012
PubMed

Insights

Chagas disease heart failure management lacks device therapy evidence. Cardiac resynchronization and implantable cardioverter-defibrillator therapies are used, but their efficacy in Chagas patients remains debated.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Medical Devices

Background:

  • Chagas disease is a leading cause of chronic heart failure in endemic regions.
  • Current medical treatments for Chagas heart failure mirror those for non-Chagas patients.
  • Evidence supporting device therapy for Chagas heart failure is limited.

Purpose of the Study:

  • To review the current evidence and recommendations for device therapy in Chagas heart failure.
  • To discuss the role of cardiac resynchronization therapy (CRT) and implantable cardioverter-defibrillators (ICDs) in managing Chagas cardiomyopathy.

Main Methods:

  • Literature review of studies on device therapy in Chagas heart failure.
  • Analysis of current clinical guidelines and expert opinions.
  • Examination of electrophysiological testing and patient outcomes.

Main Results:

  • Cardiac resynchronization therapy is recommended for Chagas heart failure with conduction disturbances (e.g., left bundle branch block) and advanced symptoms refractory to medical treatment, though controversial.
  • Implantable cardioverter-defibrillator therapy is indicated for primary prevention of sudden cardiac death in patients with left ventricular ejection fraction <30%.
  • ICD therapy is also recommended for secondary prevention and in patients with moderate left ventricular dysfunction and inducible arrhythmias.

Conclusions:

  • Device therapy, including CRT and ICDs, plays a role in managing Chagas heart failure, particularly for conduction abnormalities and prevention of sudden cardiac death.
  • Further evidence-based research is needed to solidify the role and optimize the use of device therapies in Chagas cardiomyopathy.
  • Current recommendations suggest careful patient selection for device implantation in Chagas disease patients.

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