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Improvement in left ventricular mechanics following medical treatment of constrictive pericarditis
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    IgG4-related constrictive pericarditis might also exhibit a variable response to corticosteroids

    The observation that transient constrictive pericarditis(CP) is associated with a significantly higher erythrocyte sedimentation rate than its counterpart, persistent pericarditis, is consistent with the hypothesis that, in the former disorder, an active inflammatory process is at play, which might be responsive to corticosteroid therapy, whereas, in the latter context, irreversiible pericardial fibrosis or even pericardial calcification might have become firmly established.
    This hypothesis can be tested in a disorder such as IgG4-related constrictive pericarditis, where corticosteroids are the only treatment modality available. In IgG4-related CP the disease spectrum includes, at one extreme,, effusive-constrictive pericarditis without pericardial calcification(1), and, at the other extreme, CP with pericardial calcification(2).In between, there may be gradations of acute inflammatory response..
    The 79-year old man with IgG4-related effusive CP reported by Yuriditsky et al had stigmata of CP identified by simultaneous left and right-sided catheterisation. He had an initially good response to corticostroids, characterised by good diuresis over the course of 10 days. However, he had a subsequent relapse, and was eventually treated by pericardiectomy(1).
    By contrast, the 29 year old woman with IgG4-related CP reported by Sekigushi et al had a consistently good response to corticosteroids. In her case, as well, there was no pericardial calcification. E...

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    Conflict of Interest:
    None declared.