PEWS Calculator (Paediatric Early Warning Score)

A systematic approach to identifying children at risk of clinical deterioration. Used throughout the NHS to improve paediatric safety.

Important Clinical Disclaimer: The PEWS Calculator is intended for use by qualified healthcare professionals only. It is for educational and informational purposes and should not replace clinical judgement. Always interpret results alongside the full clinical picture and follow your local guidelines and protocols.
Patient Parameters
Age-specific vital sign thresholds will be applied
Respiratory Assessment
Select age group to see normal range
Cardiovascular Assessment
Select age group to see normal range
Select age group to see normal range
Neurological Assessment
Parental concern is a recognised predictor of deterioration
About PEWS

The Paediatric Early Warning Score (PEWS) is a bedside tool designed to identify children at risk of clinical deterioration. Unlike adult early warning scores, PEWS accounts for age-specific normal ranges in vital signs.

Key Features:

  • Age-specific physiological parameters
  • Incorporates parental/carer concern
  • Triggers graded clinical response
  • Standardises paediatric safety practices

Note: Various PEWS versions exist across different trusts. This calculator follows commonly used parameters based on NHS England guidance. Always follow your local trust's PEWS chart.

PEWS Escalation Thresholds

PEWS Score Risk Level Monitoring Frequency Clinical Response
0-3 Low Risk 4-6 hourly
  • Continue routine observations
  • Document PEWS score
4-5 Medium Risk 2 hourly minimum
  • Increase monitoring frequency
  • Inform senior nurse/nurse in charge
  • Consider medical review
6-7 High Risk Hourly minimum
  • Urgent medical review required
  • Consider CCOT/outreach team review
  • Prepare for potential escalation
≥8 or Score 3 in any parameter Critical Continuous monitoring
  • Immediate senior medical review
  • Contact PICU/Critical Care outreach
  • Consider PICU transfer
  • Document escalation pathway

Escalation thresholds may vary by trust. Always follow local guidelines.

Age-Specific Normal Ranges

Parameter 0-11 months 1-4 years 5-11 years 12-16 years
Respiratory Rate (breaths/min) 30-40 20-30 18-25 12-20
Heart Rate (beats/min) 110-160 90-140 70-120 60-100
Systolic BP (mmHg) 70-90 80-100 90-110 100-120

Special Considerations

Neonates (0-28 days)

Neonates require specialised assessment tools and should not routinely be assessed using standard PEWS:

  • Consider using neonatal early warning scores (NEWS or Newborn EWS)
  • Vital sign ranges differ significantly from older infants
  • Signs of deterioration may be subtle (feeding difficulties, colour changes)
  • Low threshold for escalation to neonatal team

Children with Chronic Conditions

Children with chronic conditions may have adapted to abnormal baselines:

  • Cardiac conditions may affect normal heart rate and BP ranges
  • Respiratory conditions may result in chronic oxygen dependence
  • Neurological conditions may affect baseline consciousness levels
  • Document individual patient's normal baseline parameters
  • Look for change from baseline rather than absolute values

Frequently Asked Questions

PEWS is a scoring system used to identify children at risk of clinical deterioration in hospital settings. It assesses key physiological parameters including respiratory rate, oxygen requirement, heart rate, blood pressure, capillary refill time, and neurological status. Different from NEWS2 (used for adults), PEWS accounts for age-specific normal ranges in children.

PEWS covers children from birth to 16 years of age, with age-specific parameters for different groups: infants (0-11 months), toddlers (1-4 years), young children (5-11 years), and adolescents (12-16 years). Each age group has different normal ranges for vital signs.

A PEWS score of 4 or more typically triggers escalation to senior nursing staff. A score of 6 or more usually requires medical review. A score of 8 or more indicates high risk and requires urgent senior medical assessment. Any score of 3 in a single parameter also warrants escalation. Local trust policies may vary.

The frequency of PEWS monitoring depends on the child's condition and score. For stable patients, minimum 4-6 hourly observations are typical. Higher PEWS scores require more frequent monitoring - hourly or continuous for scores of 6 or above. Always follow your local trust guidelines.

PEWS should not replace clinical judgement. It may not detect all deteriorating children, particularly those with chronic conditions who have adapted to abnormal baselines. Parental concern and clinician instinct remain important factors. PEWS is one component of a broader safety system.

References

  1. NHS England. (2018). Paediatric Early Warning Score (PEWS) – NHS England guidance.
  2. Royal College of Paediatrics and Child Health. (2019). National Paediatric Early Warning Score (NPEWS).
  3. Chapman SM, et al. (2016). Systematic review of paediatric alert criteria. Archives of Disease in Childhood, 101(10), 959-966.
  4. Parshuram CS, et al. (2018). Multicentre validation of the bedside paediatric early warning system score. Critical Care, 22(1), 1-12.
  5. Lambert V, et al. (2017). The impact of PEWS implementation on patient outcomes: A systematic review. Journal of Advanced Nursing, 73(9), 2034-2048.
Disclaimer

This calculator is provided for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

  • Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition.
  • Never disregard professional medical advice or delay seeking it because of information from this tool.
  • Clinical decision-making should always incorporate the full clinical context, patient preferences, and local protocols.
  • The creators of this tool accept no liability for decisions made based on its output.

If you are a patient: please discuss any results with your healthcare provider. This tool is designed for use by medical professionals and may not be appropriate for self-assessment.