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Risk factors for Chagas' disease reactivation after heart transplantation

Sílvia V Campos1, Tânia Mara V Strabelli, Vicente Amato Neto

  • 1Department of Infectious and Parasitic Diseases, University of São Paulo Medical School, São Paulo, Brazil. silviavcampos@uol.com.br

The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation
|May 28, 2008
PubMed

Insights

Reactivation of Chagas' disease after heart transplantation is linked to increased immunosuppression, specifically from rejection episodes and neoplasms. Early diagnosis and preemptive therapy are crucial for managing this risk.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Transplantation Immunology

Background:

  • Chagas' disease, caused by Trypanosoma cruzi, remains endemic in Latin America.
  • Heart transplantation is a vital option for end-stage Chagas' cardiomyopathy.
  • Post-transplant reactivation of Chagas' disease can lead to severe complications.

Purpose of the Study:

  • To identify risk factors for Chagas' disease reactivation after heart transplantation.
  • To understand the determinants of post-transplant Chagas' disease reactivation.

Main Methods:

  • Retrospective cohort study of heart transplant recipients with Chagas' disease (1985-2004).
  • Review of clinical, microbiologic, and histopathologic data.
  • Statistical analysis using SPSS software.

Main Results:

  • 17 out of 64 patients (26.5%) experienced Chagas' disease reactivation.
  • Independent risk factors for reactivation included multiple rejection episodes, development of neoplasms, and use of mycophenolate mofetil.
  • Age, gender, cytomegalovirus infection, and mortality did not show significant association.

Conclusions:

  • Increased immunosuppression, indicated by rejection episodes and neoplasms, elevates the risk of Chagas' disease reactivation.
  • Physicians should be vigilant for early diagnosis and consider preemptive treatment.
  • While reactivation causes significant morbidity, mortality risk is low.
Abstract

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