Clinical Prediction Score for Ruptured Appendicitis in ED

Area of Science:

• Emergency Medicine
• Surgical Pathology
• Diagnostic Accuracy

Background:

• Ruptured appendicitis presents significant morbidity and mortality, necessitating urgent surgical intervention.
• Existing tools like the Alvarado Score aid in predicting acute appendicitis but lack specificity for rupture prediction.
• There is a clinical need for a validated score to identify patients at high risk of appendicitis rupture, particularly in Asian demographics.

Purpose of the Study:

• To develop and validate a prediction score for identifying ruptured appendicitis in an Asian population.
• To identify key clinical and laboratory factors associated with appendicitis rupture.
• To establish a practical tool for emergency medicine physicians to assess rupture risk.

Main Methods:

• A retrospective, cross-sectional diagnostic study was conducted involving 480 patients who underwent appendectomy.
• Data collected included patient demographics, clinical symptoms, physical examination findings, and laboratory results (WBC, PMN).
• Multivariable logistic regression analysis was employed to develop the predictive model and the RAMA WeRA Score.

Main Results:

• Of 480 patients, 77 (16%) presented with ruptured appendicitis.
• Five independent predictors of rupture were identified: age >60 years, fever >37.3°C, guarding, polymorphonuclear leukocytes (PMN) >75%, and pain duration >24 hours.
• A RAMA WeRA Score greater than 6 was associated with a 3.88-fold increase in the likelihood ratio for ruptured appendicitis.

Conclusions:

• The developed Ramathibodi Welawat Ruptured Appendicitis Score (RAMA WeRA Score) effectively predicts the likelihood of appendicitis rupture.
• A RAMA WeRA Score exceeding 6 is a significant indicator of ruptured appendicitis in the studied Asian population.
• This score offers a valuable tool for risk stratification and clinical decision-making in suspected appendicitis cases.