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  • Title: [Histologically detectable myocarditis in patients with impaired left ventricular function].
    Author: Regitz V, Olsen EG, Rudolph W.
    Journal: Herz; 1985 Feb; 10(1):27-35. PubMed ID: 3979945.
    Abstract:
    In patients with impaired left ventricular function in whom dilated cardiomyopathy is initially suspected after performance of comprehensive diagnostic studies, histologic evidence of myocarditis or status-post myocarditis is being documented with increasing frequency since the systematic use of endomyocardial biopsy has been incorporated into the work-up. This investigation was undertaken to analyze the histologic, clinical, hemodynamic and immunologic findings in these patients to delineate possible relationships between histologically-documented myocarditis and dilated cardiomyopathy. Incidence of histologically-documented myocarditis. In our patient population, 41 of 150 patients with impaired left ventricular function, the etiology of which had been unknown, histologic evidence of myocarditis was documented. In seven of eight in whom active myocarditis was diagnosed at initial biopsy, after a mean follow-up period of two years the histologic findings were consistent with dilated cardiomyopathy. In similar groups of patients comparable incidences of myocarditis have been reported by Parrillo et al. in 19 of 100 (19%) and Fenoglio et al. in 34 of 135 patients (25%). A higher incidence has been reported by Zee-Cheng et al. in 22 of 35 patients (63%). Accordingly, pooled data indicate that the overall incidence of histologically-documented myocarditis was 30% in 528 patients initially suspected to have dilated cardiomyopathy. The variances in the incidence reported by the respective authors may be attributable to differences in the histologic definition of myocarditis, number of biopsies obtained, size of the patient population and the epidemiologically-related incidence of viral disease.(ABSTRACT TRUNCATED AT 250 WORDS)
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