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Mortality in primary and secondary myocarditis.
Todd C Pulerwitz1, Thomas P Cappola, G Michael Felker
1Cardiology Division, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA. tcp2003@columbia.edu
American Heart Journal
|April 13, 2004
Summary
The prognosis for myocarditis depends on its cause. Secondary myocarditis, linked to other diseases, has varied outcomes, with HIV-associated myocarditis being particularly severe. The underlying condition significantly impacts patient survival.
Area of Science:
- Cardiology
- Immunology
Background:
- Lymphocytic myocarditis can be a primary condition or secondary to systemic diseases.
- The comparative prognosis of primary versus secondary myocarditis remains unclear.
Purpose of the Study:
- To compare the survival rates of patients with primary and secondary myocarditis.
- To identify factors influencing prognosis in myocarditis.
Main Methods:
- A cohort of 171 patients with biopsy-proven myocarditis was observed for an average of 5.9 years.
- Myocarditis was classified as primary or secondary based on the presence of systemic disease.
- Survival analysis used Kaplan-Meier and Cox proportional hazard models.
Main Results:
- Secondary myocarditis prognosis varied by underlying disease; HIV-associated myocarditis had a poor prognosis (RH 6.70).
- Peripartum myocarditis showed reduced mortality compared to idiopathic myocarditis, though this effect was attenuated after adjustments.
- Advanced age and pulmonary hypertension were key predictors of mortality in both primary and secondary myocarditis.
Conclusions:
- The prognosis of secondary myocarditis is largely determined by the associated primary disease process.
- Idiopathic myocarditis prognosis may differ from secondary forms, influenced by specific etiologies.