US showed that the presence of dilated loop of bowel had a sensitivity and specificity of 90.9% and 83.7%, respectively, and the presence of absent peristalsis had a sensitivity and specificity of 27.3% and 97.7%, respectively.
US showed superiority over plain radiographs in detecting SBO.
US showed a sensitivity of 93%, specificity of 100%, PPV of 100%, and NPV of 73%.
Not only does US show promises in diagnosis, but it may play a role in detecting patients who need emergent intervention such as those with strangulation.
US not only detects the obstruction, but it can detect if this obstruction is caused by a functional or obstructive cause, and it can detect the level of severity.
Using US can detect findings of a worsening obstruction. This may reduce the wait time for a more detailed imaging study (such as CT) before deciding between conservative and surgical management.