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NEWS2

NEWS2 — National Early Warning Score 2: Standard UK/Australia clinical deterioration scoring. Triggers rapid response escalation. Replaces NEWS for SpO2 Scale 2 (hypercapnic risk patients).
Guidelines & Evidence

Verified

Last Review: 2026-07-17

When to Use

When to Use

All adult inpatients on medical, surgical, and obstetric wards
Routine vital sign assessment during nursing observations
Triggered by clinical deterioration for rapid response escalation
Transfer and handover documentation in NHS and Australian hospital systems

NHS Mandate

NEWS2 is mandated by NHS England (2017) and recommended by the Royal College of Physicians as the standard early warning system for all adult acute hospitals. It formally replaced NEWS (2012).

How it Works

Seven Physiological Parameters

Respiratory rate (breaths/min)
SpO2 — Scale 1 (standard) or Scale 2 (hypercapnia-risk patients e.g. COPD)
Supplemental oxygen use (+2 if any device required)
Systolic blood pressure (mmHg)
Pulse rate (bpm)
Level of consciousness (AVPU)
Temperature (°C)

SpO2 Scale 2

Scale 2 (target 88–92%) is used for patients with known hypercapnic respiratory failure risk (COPD, neuromuscular disease). Using standard Scale 1 in these patients risks rewarding inappropriate hyperoxia.

Escalation Thresholds

01
Score 0–4: Low. Nurse-led monitoring. Minimum 12-hourly.
02
Score 5–6 OR any single parameter ≥ 3: Medium. Urgent ward doctor review within 1h.
03
Score ≥ 7: High. Emergency assessment by team with critical care competencies. Consider ICU/HDU transfer.

Clinical Pearls

NEWS2 vs SEWS vs MEWS

NEWS2 includes SpO2 dual-scale and supplemental O2 — neither SEWS nor MEWS captures supplemental oxygen
NEWS2 validated in sepsis identification: score ≥ 5 has similar performance to qSOFA for predicting sepsis-related mortality
MEWS (Modified Early Warning Score) remains popular in some centres but has no SpO2 dual-scale

Sepsis Screening

NEWS2 ≥ 5 prompts clinician to exclude sepsis (apply Sepsis-3 criteria). In the presence of suspected infection, NEWS2 ≥ 5 should trigger a blood culture + lactate + IV antibiotics within 1h protocol.

Next Steps

Escalation Pathway

01
Score 1–4: Nurse informs ward team. Monitoring frequency increased.
02
Score 5–6: Senior nurse notified. Ward doctor assesses within 1h. Consider ABG if SpO2 dropping.
03
Score ≥ 7: Emergency team. Sepsis screen. Airway assessment. Consider intubation/ventilation. ICU referral.

Complementary Tools

HEART Score
ABCD2 Score (TIA)
Ranson's Criteria

The Evidence

NEWS2 Validation

The ability of the National Early Warning Score (NEWS) to discriminate patients at risk of early cardiac arrest, unanticipated intensive care unit admission, and death.

Smith GB et al. • Resuscitation.. 2013;84(4):465–470.

Origins & History

Royal College of Physicians — 2012 and 2017

NEWS was first published by the Royal College of Physicians in 2012. NEWS2 (2017) added a second SpO2 scale for hypercapnic patients, incorporated the 2016 Sepsis-3 criteria into escalation triggers, and clarified the use of ACVPU (Alert, Confusion, Voice, Pain, Unresponsive) over AVPU. Widely adopted across the UK, Ireland, Australia, and over 20 other countries.

Last Comprehensive Review: 2026-07-17

Related Tools

SOFA Score
Internal Medicine CalculatorsCardiology CalculatorsPulmonary Calculators
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Recent Journal Updates

BJOGJul 22, 2026
Care of the Newborn and Cord During the Third Stage of Labour (Scientific Impact Paper No. 78)

Clinical Context

We think this might be relevant to the clinical guidance for NEWS2 (National Early Warning Score 2).

British J HaematologyJul 22, 2026
Immunoglobulin replacement after chimeric antigen receptor T‐cell therapy in large B‐cell lymphoma with hypogammaglobulinaemia: Secondary Center for International Blood and Marrow Transplant Research analysis

Clinical Context

We think this might be relevant to the clinical guidance for NEWS2 (National Early Warning Score 2).

WHO NewsJul 15, 2026
Global childhood immunization coverage inches forward despite conflict and hesitancy – UNICEF, WHO

Clinical Context

We think this might be relevant to the clinical guidance for NEWS2 (National Early Warning Score 2).