Myocardial function in Rocky Mountain spotted fever: echocardiographic assessment |
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Authors: | J Marin-Garcia F F Barrett |
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Affiliation: | From the Department of Pediatrics, University of Tennessee Center for the Health Sciences and Le Bonheur Children''s Medical Center, Memphis, Tennessee, USA |
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Abstract: | Nine patients with Rocky Mountain spotted fever underwent M-mode echocardiographic examination. Increased left ventricular dimension was found in 2 patients and decreased left ventricular shortening fraction in 7. Diminished mean velocity of circumferential fiber shortening, increased left ventricular systolic time intervals ratio, and increased mitral valve E point to ventricular septal separation were found in 6 patients. One patient died and at necropsy diffuse myocarditis was present. Repeat echocardiographic examination was available in the remaining 8 patients at follow-up (mean 10 months). Abnormal E mitral point to ventricular septal separation remained in 3 patients and decreased left ventricular shortening fraction in 2; in 1 there was also increased left ventricular end-diastolic dimension. Thus abnormal left ventricular function and chamber enlargement are frequently present in patients with Rocky Mountain spotted fever. |
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Keywords: | Address for reprints: José Marin-Garcia MD Section of Pediatric Cardiology Department of Pediatrics Le Bonheur Children's Medical Center 1 Children's Plaza Memphis Tennessee 38103. |
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