MEWS Score Calculator
Modified Early Warning Score - Assess patient deterioration risk using vital signs
Medical Disclaimer
This calculator should not be used as a substitute for clinical knowledge or judgment. Always consult with qualified healthcare professionals for patient assessment and treatment decisions. In emergency situations, seek immediate medical attention regardless of the MEWS score.
Calculate MEWS Score
Normal range: 90-140 mmHg
Normal range: 60-100 bpm
Normal range: 36.0-37.5°C (96.8-99.5°F)
Normal range: 12-20 breaths/min
MEWS Score Results
Clinical Interpretation
Patient in a stable condition. Continue routine monitoring.
Clinical Recommendation:
Continue routine vital sign monitoring every 4-6 hours. No immediate intervention required.
Score Breakdown
Example Case
Case: Post-operative Patient
Patient: 65-year-old post-operative patient, day 2 after surgery
Vital Signs:
- • Systolic BP: 85 mmHg
- • Heart Rate: 115 bpm
- • Temperature: 38.5°C
- • Respiratory Rate: 24 breaths/min
- • Urine Output: <0.5 ml/kg/h
- • AVPU: Responds to voice
MEWS Score Calculation
Systolic BP 85 mmHg: 1 point
Heart Rate 115 bpm: 1 point
Temperature 38.5°C: 1 point
Respiratory Rate 24: 1 point
Urine Output <0.5 ml/kg/h: 1 point
AVPU - Responds to voice: 1 point
Total MEWS Score: 6 (Medium Risk - 12.7% mortality)
MEWS Risk Categories
Low Risk
Stable condition
7.9% mortality risk
Medium Risk
Signs of deterioration
12.7% mortality risk
High Risk
Critical condition
30% mortality risk
AVPU Scale
Alert
Fully conscious and oriented
Voice
Responds to verbal stimulus
Pain
Responds only to painful stimulus
Unresponsive
No response to any stimulus
When to Use MEWS
General Ward Patients
Regular monitoring and assessment
Post-operative Care
Early detection of complications
COVID-19 Patients
Respiratory compromise assessment
Emergency Department
Triage and risk stratification
Understanding MEWS (Modified Early Warning Score)
What is MEWS?
The Modified Early Warning Score (MEWS) is a bedside clinical tool used to identify patients at risk of deterioration in hospital settings. It evaluates six physiological parameters to provide an objective assessment of patient stability.
Clinical Applications
- •Early detection of patient deterioration
- •Standardized communication between healthcare teams
- •Trigger for escalation protocols
- •Risk stratification and resource allocation
Scoring Components
MEWS = SBP + HR + Temp + RR + Urine + AVPU
- SBP: Systolic Blood Pressure (circulation)
- HR: Heart Rate (cardiac function)
- Temp: Temperature (infection/inflammation)
- RR: Respiratory Rate (lung function)
- Urine: Urine Output (kidney function)
- AVPU: Neurological Response (brain function)
Sensitivity: 75% | Specificity: 83%
Threshold for action: MEWS ≥ 4 points
Clinical Action Points
MEWS 0-2 (Low Risk)
Continue routine monitoring every 4-6 hours
MEWS 3-4 (Medium Risk)
Increase monitoring frequency, consider medical review
MEWS ≥5 (High Risk)
Urgent medical review, consider ICU/HDU transfer