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Evaluation of Ultrasonography as an Adjunct for Diagnosis of Dengue Fever Among Children

R. P. Shamikumar,Syed Mohammed,Ashika Banu M.,Janani M. Z.,Chethan Srinivasan,T. S. L. Ananya.

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Introduction: This study aims to evaluate the role of ultrasonography (USG) for early diagnosis of clinically suspected dengue fever before it becomes serologically positive and usefulness of USG in predicting severity of the disease. Methods: Prospective observational study conducted at a tertiary care hospital from April 2020 to March 2021, 70 cases of clinically suspected dengue within the age group of 6 months to 15 years presenting with fever for less than 5days underwent whole abdomen and chest ultrasonography. For seropositive cases, ultrasonography findings and their utility in early diagnosis and prediction of disease severity was analyzed along with their correlation to the clinical and laboratory profiles.Results:75.8% had primary dengue and 24.2% had secondary dengue. 94% cases demonstrated ultrasonography features suggestive of dengue like hepatomegaly (81%), ascites (63.8%), splenomegaly (56.9%), gall bladder wall thickness (46.6%), Cholecystitis (44.8%) and Pleural effusion (41.4%). Ascites and pleural effusion correlated well with clinical severity (p5mm correlated well with disease severity. USG showed 94.3% sensitivity, 16.67% specificity and 81.43% of diagnostic accuracy in the seropositive cases of this study. Conclusion: Ultrasonography is useful not only as an adjuvant for early diagnosis of Dengue fever but also as a marker of disease severity.

Key words: dengue, disease severity, early diagnosis, seropositive, ultrasonography

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