Optimising diagnostics to discriminate complicated from uncomplicated appendicitis: a prospective cohort study...

Area of Science:

• Medical Diagnostics
• Surgical Pathology

Background:

• Distinguishing between complicated and uncomplicated appendicitis is crucial for appropriate treatment.
• The Scoring system of Appendicitis Severity (SAS) shows promise but requires external validation.

Purpose of the Study:

• To prospectively externally validate the SAS in a new cohort of patients with suspected appendicitis.
• To optimize the SAS if it does not meet the 95% sensitivity and negative predictive value (NPV) threshold.
• To assess the diagnostic accuracy of physician's clinical judgment and patient treatment preferences.

Main Methods:

• Prospective external validation of the SAS in 795 adult patients with imaging-confirmed appendicitis.
• Comparison of SAS predictions with combined surgical and histological diagnoses.
• Potential score optimization followed by a second validation in 328 patients.

Main Results:

• The SAS aims to achieve a 95% NPV for ruling out complicated appendicitis and 95% sensitivity for detecting it.
• The study will report on the diagnostic accuracy of the SAS and physician's clinical judgment.
• Patient preferences for treatment options will also be evaluated.

Conclusions:

• External validation is essential to confirm the SAS's utility in diagnosing appendicitis severity.
• Optimizing the SAS could lead to more accurate and tailored patient management.
• This research will inform clinical decision-making for appendicitis cases.