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[Ultrasound first in acute appendix? Unnecessary laparotomies can often be avoided]
13. Medizinischen Klinik des Städtischen Krankenhauses Kiel. 3med@krankenhaus-kiel.de
MMW Fortschritte Der Medizin
|August 10, 2000
Summary
High-resolution ultrasonography (US) improves acute appendicitis diagnosis accuracy to 86-87%, significantly reducing unnecessary surgeries. Clinical findings remain crucial for final decisions, especially with potential US limitations.
Area of Science:
- Medical Imaging
- Diagnostic Modalities
- Gastrointestinal Surgery
Background:
- Acute appendicitis is a common cause of acute abdomen.
- Clinical diagnosis accuracy for appendicitis is limited (70-78%), leading to high rates of unnecessary laparotomies (20-25%).
Purpose of the Study:
- To evaluate the diagnostic accuracy of high-resolution ultrasonography (US) in suspected acute appendicitis.
- To assess the impact of US on reducing negative laparotomy rates.
Main Methods:
- Prospective studies were reviewed to determine the accuracy of clinical diagnosis and ultrasonography in appendicitis.
- Data on sensitivity, specificity, and predictive values of US were analyzed.
Main Results:
- Ultrasonography demonstrates high diagnostic accuracy for acute appendicitis, ranging from 86-87% (sensitivity 75-92%, specificity 92-100%).
- US has successfully halved the negative laparotomy rate to 8-15% in experienced hands.
- Positive and negative predictive values for US are high (89-96%).
Conclusions:
- High-resolution ultrasonography is a valuable, noninvasive tool for diagnosing acute appendicitis.
- While US significantly improves diagnostic accuracy and reduces unnecessary surgeries, clinical correlation is essential for definitive treatment decisions, especially in cases with potential US limitations.