Outcomes for children with acute myocarditis

Area of Science:

• Pediatric Cardiology
• Infectious Diseases
• Immunology

Background:

• Myocarditis in children has an unknown optimal treatment.
• Outcomes vary significantly, impacting long-term cardiac health.
• Viral infections are a common cause of pediatric myocarditis.

Purpose of the Study:

• To evaluate treatment outcomes in a large series of children diagnosed with myocarditis.
• To compare the efficacy of different therapeutic approaches, including steroids and intravenous immune globulin.
• To identify factors influencing recovery, death, or transplantation in pediatric myocarditis.

Main Methods:

• Retrospective review of pediatric myocarditis cases at Children's Hospital of Pittsburgh since 1985.
• Inclusion criteria: biopsy-proven myocarditis or cardiac dysfunction with viral infection proof.
• Outcome assessment: complete recovery, incomplete recovery, death, or transplantation.

Main Results:

• Of 41 patients, 66% achieved complete recovery, 10% had incomplete recovery, and 24% died or underwent transplantation.
• Steroid and intravenous immune globulin (IVIG) therapies showed no significant advantage over no treatment.
• Survival free from death or transplantation was 81% at 1 year and 74% at 5 years, irrespective of treatment modality.

Conclusions:

• Current treatment strategies, including steroids and IVIG, do not appear to significantly alter outcomes in pediatric myocarditis.
• Data suggest a need for randomized controlled trials to establish effective treatments.
• Further research is essential to develop and validate new therapeutic interventions for pediatric myocarditis.