BACKGROUND: Viruses are the most prevalent ausative agents of @entity2401 in young @entity1 . Studies have shown @entity2401 in post mortem examinations during @entity1800 outbreaks. The aims of this study are to assess the prevalence of and risk factors for subclinical @entity2401 in young @entity1 hospitalized with an @entity697 . OBJECTIVES: Evaluation of the prevalence of asymptomatic @entity2401 or decrease in heart functions during @entity1800 . METHODS: A prospective study was conducted between 1st January and 30th September, 2009. The study included 45 @entity1 3-60 months old hospitalized with @entity221 with no clinical or microbiological evidence of acute @entity2348 . Serum levels of troponin were obtained, and ECG and echocardiography were performed in all the @entity1 . Parameters that determined @entity2401 included: (1) ECG ST-T changes suggestive of @entity2401 ; (2) Increased serum troponin level; (3) Echocardiography findings including: shortening fraction less than 28%, left ventricle end diastolic diameter > than 2 standard deviations for age, abnormal @entity339 , or abnormal diastolic function. Clinical and epidemiological data were analyzed in order to determine parameters related to findings suggestive of silent @entity2401 . RESULTS: In 16 (35%) @entity1 at least one parameter, and in 7 (16%) at least 2 parameters of @entity2401 were found. Impaired diastolic function was found in 11 cases (69%), ECG changes in 5 @entity1 (35%, left ventricle dilatation in 4 (25%), and decreased shortening fraction in 3 cases (18%]. Other symptoms and signs of @entity2401 were not found in any of the 16 @entity1 , and no clinical or epidemiological parameter was significantly associated with silent @entity2401 . CONCLUSIONS: In a third of the @entity1 , some evidence of @entity296 was documented. In seven of them (16% of all cases), there were two different categories of @entity296 . Those cases are suspected to be silent @entity2401 . No clinical and epidemiological parameters associated with the disease were found. The clinical importance of this phenomenon should be determined by a long-term follow-up study. SUMMARY: In this preliminary study, we found a high prevalence of cardiac involvement in hospitalised @entity1 with @entity1800 . It seems that this cardiac involvement is due to acute sub-clinical @entity2401 . The importance of these findings should be evaluated.

[THE PREVALENCE OF SUBCLINICAL MYOCARDITIS AMONG YOUNG XXXX WITH ACUTE VIRAL INFECTION].

@entity1 :: ('9606', 'Species') :: ['children', 'patients'] @entity697 :: ('MESH:D000208', 'Disease') :: ['acute viral disease'] @entity339 :: ('MESH:D008944', 'Disease') :: ['mitral valve incompetence'] @entity296 :: ('MESH:D009202', 'Disease') :: ['myocardial dysfunction'] @entity2348 :: ('MESH:D001424', 'Disease') :: ['bacterial infection'] @entity1800 :: ('MESH:D014777', 'Disease') :: ['viral infections', 'viral infection', 'viral disease'] @entity2401 :: ('MESH:D009205', 'Disease') :: ['myocarditis', 'acute myocarditis'] @entity221 :: ('MESH:D005334', 'Disease') :: ['febrile illness']
@entity1 :: (9606,Species) :: ['CHILDREN']
