What is the role of ultrasonography in the diagnose dengue?

Updated: May 03, 2019
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Ultrasonography is a potentially timely, cost-effective, and easily used modality in the evaluation of potential dengue hemorrhagic fever. Positive and reliable ultrasonographic findings include fluid in the chest and abdominal cavities, pericardial effusion, and a thickened gallbladder wall. Thickening of the gallbladder wall may presage clinically significant vascular permeability. [7, 73]

The utility of previous studies was limited because patients underwent only a single scan. However, in a study by Srikiatkhachorn et al, daily serial ultrasonographic examinations of the thorax and abdomen proved useful in the evaluation of patients with suspected dengue hemorrhagic fever. [73] A study conducted by Santhosh et al found similar results, with a thickened gallbladder wall found in 66.7% of seropositive dengue cases, 64.5% having ascites, and 50% having pleural effusion. [74]

Plasma leakage was detected in some patients within 3 days of fever onset. Pleural effusion was the most common sign. Based on ultrasonographic findings, dengue hemorrhagic fever was predicted in 12 patients before hemoconcentration criteria had been met.


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