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Blunt abdominal trauma: screening us in 2,693 patients
M A Brown1, G Casola, C B Sirlin
1Departments of Radiology, University of California, San Diego, 200 W Arbor Dr, San Diego, CA 92103-8756, USA.
Radiology
|February 13, 2001
Summary
Screening abdominal ultrasonography (US) accurately identifies blunt abdominal trauma injuries. This imaging technique demonstrates high sensitivity and specificity, proving valuable in patient assessment.
Area of Science:
- Emergency medicine
- Radiology
- Trauma surgery
Background:
- Blunt abdominal trauma presents diagnostic challenges.
- Accurate and timely injury detection is crucial for patient outcomes.
Purpose of the Study:
- To determine the diagnostic accuracy of screening abdominal ultrasonography (US) in patients with blunt abdominal trauma.
Main Methods:
- A total of 2,693 abdominal US examinations were performed on patients with blunt abdominal trauma.
- US findings were compared against diagnostic peritoneal lavage, repeat US, CT, surgery, and clinical course.
- Bladders were filled with saline to enhance visualization.
Main Results:
- Screening US showed 84% sensitivity and 96% specificity.
- Overall accuracy was 96%, with a negative predictive value of 99%.
- False-negative findings included retroperitoneal and bowel injuries; no deaths occurred in these cases.
Conclusions:
- Abdominal US is a valuable screening tool for blunt abdominal trauma.
- Its implementation has led to changes in clinical practice, reducing reliance on diagnostic peritoneal lavage.
- Computed tomography (CT) is utilized for further evaluation when US findings are positive or equivocal.