Validation of a Scoring System to Distinguish Uncomplicated From Complicated Appendicitis

Area of Science:

• Medical research
• Clinical diagnostics
• Surgical outcomes

Background:

• Uncomplicated appendicitis can be managed conservatively with antibiotics.
• Accurate patient selection is crucial for successful conservative appendicitis treatment.
• A clinical and ultrasound-based scoring system was developed to aid this selection.

Purpose of the Study:

• To externally validate a scoring system for identifying uncomplicated appendicitis.
• To assess the system's utility in guiding conservative management decisions.

Main Methods:

• Retrospective cohort study of 678 adult patients with suspected acute appendicitis.
• Clinical evaluation and ultrasound used for initial assessment.
• A previously developed scoring system applied to all patients.
• Final diagnosis based on operative findings.

Main Results:

• 175 patients (25.8%) had complicated appendicitis; 491 (72.4%) had uncomplicated appendicitis.
• The scoring system identified 272 patients with a score of five or less.
• Of these, only 17 (6.2%) had complicated appendicitis, yielding a 93.8% negative predictive value.

Conclusions:

• The scoring system accurately identified 93.8% of patients with uncomplicated appendicitis.
• This scoring system demonstrates potential for identifying suitable candidates for conservative management.
• Further studies can leverage this tool for antibiotic-first strategies in appendicitis care.