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Jpn Heart J. 2000 Jan;41(1):41-7.

C-reactive protein as a prognostic marker in lymphocytic myocarditis.

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Second Department of Internal Medicine, Gunma University School of Medicine, Japan.


The prognosis of patients with lymphocytic myocarditis (LM) is poor with the combined endpoint of death or transplant in the Myocarditis Treatment trial being 56% at 5 years. Physicians often have difficulty determining the prognosis in an individual patient. Patients with LM may have ongoing myocardial inflammation. We evaluated the ability of a serum marker of inflammation to predict prognosis in patients with LM. Serum concentrations of C-reactive protein (CRP) were measured in patients with LM. Thiry-one patients with clinical and histologic evidence of LM were evaluated. Patients with coronary artery disease, and idiopathic dilated and secondary cardiomyopathies were excluded. Overall mortality and morbidity from congestive heart failure was assessed at 28 days. The mean plasma CRP concentrations in the five patients who died within the 28-day follow-up period were significantly higher than in those patients who survived (17.4 +/- 5.6 vs 5.9 +/- 3.3 mg/ml, p < 0.05). The CRP concentration was positively correlated with plasma levels of lactic dehydrogenase and the New York Heart Association functional class. Routine measurement of CRP may be a useful tool for determining the prognosis in patients with LM.

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