Alvarado Score Calculator
Diagnostic tool for acute appendicitis
Patient Assessment
Select all criteria that apply to the patient:
Alvarado Score: 0/10
Clinical Note: The Alvarado Score is a diagnostic aid and should not replace clinical judgment. Always consider patient history, physical examination, and imaging studies (ultrasound/CT) when making treatment decisions.
About the Alvarado Score
What is the Alvarado Score?
The Alvarado Score is a clinical scoring system used to estimate the probability of acute appendicitis in patients presenting with abdominal pain. It helps guide diagnostic and treatment decisions.
Alvarado Score Criteria
| Criteria | Points |
|---|---|
| Symptoms | |
| Migratory RIF pain | 1 |
| Anorexia | 1 |
| Nausea/Vomiting | 1 |
| Signs | |
| Tenderness in RIF | 2 |
| Rebound tenderness | 1 |
| Elevated temperature (≥37.3°C) | 1 |
| Laboratory | |
| Leukocytosis | 2 |
| Neutrophilia (Left shift >75%) | 1 |
Score Interpretation
- Score 1-4: Appendicitis Unlikely – Consider alternative diagnoses, observation, or discharge with follow-up.
- Score 5-6: Compatible with Appendicitis – Admit for observation, consider further imaging (ultrasound/CT).
- Score 7-10: Probable Appendicitis – Surgical consultation recommended, likely appendectomy.
Clinical Applications
- Emergency department triage of abdominal pain
- Reducing negative appendectomy rates
- Guiding the need for imaging studies
- Standardizing clinical assessment
Limitations
- Less accurate in children, elderly, and women of childbearing age
- Should not replace clinical judgment
- Imaging may still be necessary in equivocal cases
- Atypical presentations may yield false negatives
