Looking for more details? Read our comprehensive Alvarado guide
What is the Alvarado Score?
The Alvarado Score (also known by the acronym MANTRELS) is a clinical scoring system used in the diagnosis of acute appendicitis. It utilizes physical examination and laboratory findings to assess the likelihood of appendicitis, helping to stratify patients into low, intermediate, and high-risk groups.
Clinical Application
It acts as a triage tool for right lower quadrant pain. High scores typically suggest surgical intervention, intermediate scores indicate the need for observation or further imaging (e.g., CT scan, Ultrasound), and low scores generally point away from appendicitis as the primary diagnosis.
Scoring Ranges
- 0-3: Appendicitis unlikely
- 4-6: Appendicitis possible (observation / imaging)
- 7-8: Appendicitis probable (surgical consult)
- 9-10: Appendicitis highly probable (surgical consult)
Case Scenario
Patient: A 24-year-old male presents with right lower quadrant pain, anorexia, and nausea. Examination reveals RLQ tenderness and rebound pain. Temp is 37.5°C. Labs show WBC 12,000.
Calculation: Migration (0) + Anorexia (1) + Nausea (1) + RLQ Tenderness (2) + Rebound (1) + Temp (1) + Leukocytosis (2) + Shift (0) = 8
Interpretation: Score 8 (Probable appendicitis).
Next Steps: Surgical consultation.
How to Use
Select the symptoms, signs, and laboratory findings that apply to the patient. The tool will automatically sum the points and provide the total score along with clinical interpretation.
Frequently Asked Questions
The Alvarado score was not specifically designed for pregnant women, and anatomic changes in pregnancy can make diagnosis more difficult. Clinical judgment and imaging (e.g., ultrasound, MRI) are critical.
Yes, though other scoring systems like the Pediatric Appendicitis Score (PAS) may also be used. A low Alvarado score in children is useful for ruling out appendicitis.