NEWS2 Scoring: The UK National Early Warning Score

NEWS2 is the UK national early warning score for adults. It standardises how nurses and doctors track physiological deterioration so that escalation happens at consistent triggers regardless of which ward or trust a patient is in.

This chapter summarises the framework. For the binding scoring chart, use the Royal College of Physicians’ NEWS2 chart (linked in the sources above). Specific scoring values and escalation triggers should always come from the current official chart, not from any summary.

The six parameters

NEWS2 scores six physiological measurements:

1. Respiratory rate.
2. Oxygen saturation (with two scales: Scale 1 for most patients, Scale 2 for patients with hypercapnic respiratory failure).
3. Air or oxygen (whether the patient is on supplemental oxygen).
4. Systolic blood pressure.
5. Pulse rate.
6. Level of consciousness (using AVPU or new confusion).
7. Temperature.

(NEWS2 historically had six parameters; the Air/Oxygen flag is sometimes counted as part of the SpO2 score, sometimes as a separate item. The total parameters scored is usually quoted as 6 or 7 depending on how you count.)

Each parameter scores 0, 1, 2, or 3. The total score is the sum.

How the score works

The mechanics:

• Each parameter has a score range based on how abnormal it is.
• Most-abnormal readings score 3; mid-range abnormal score 2; mild abnormal score 1; normal score 0.
• A score of 3 in any single parameter is itself a trigger, regardless of the total.
• The total guides the urgency of escalation.

The RCP chart specifies the exact thresholds. Always use the current chart.

Escalation triggers (general framework)

The general structure of escalation triggers in NEWS2:

• Total 0: standard observation frequency.
• Total 1-4: ward-level concern; increase observation frequency.
• Total 5-6: urgent clinical review.
• Total 7 or more: emergency response, consider critical care involvement.
• Any single parameter scoring 3: urgent clinical review regardless of total.

These are general. Your trust’s specific protocol may vary slightly. Follow local policy where it differs.

Where Scale 2 SpO2 applies

Scale 2 is used for patients with documented hypercapnic respiratory failure (CO2 retention), typically COPD patients on long-term oxygen therapy. Scale 2 accepts lower SpO2 targets (88-92%) as the baseline, because oxygen-driving these patients to higher SpO2 risks suppressing their respiratory drive.

The decision to use Scale 2 is medical, documented in the patient’s notes. As a nurse, use Scale 1 unless Scale 2 is explicitly prescribed.

Common NEWS2 mistakes

Calculating with wrong SpO2 scale. Using Scale 2 for a non-CO2-retaining patient under-flags real deterioration.

Missing the single-parameter-3 trigger. A patient scoring 0 on five parameters but 3 on one (respiratory rate of 25, for example) needs escalation. The total of 3 looks low, but the single 3 is the trigger.

Not rechecking after escalation. Once escalated, NEWS2 should be repeated frequently until trajectory is clear.

Documenting without acting. Recording a high NEWS2 in the notes without verbally escalating to a senior is the most dangerous error pattern. The score is a trigger, not a record-only event.

Documentation expectations

For each set of observations:

• Time and date.
• Each individual parameter recorded.
• Total NEWS2 score.
• Escalation action taken (or note of why none was needed).
• Frequency of next observation.

The score alone isn’t enough documentation. The action it triggered (or didn’t) is part of the record.

Where NEWS2 lives in the wider system

NEWS2 is one component of the deteriorating patient pathway:

• NEWS2: calculates the score.
• ABCDE: assesses the deteriorating patient systematically.
• SBAR: communicates the deterioration to the next clinician.
• Sepsis Six: applied when sepsis is suspected.
• Critical care outreach: the team that responds to high scores in many trusts.

NEWS2 calculates; ABCDE assesses; SBAR escalates. The three work together.

Using NEWS2 in the OSCE

If you’re preparing for the OSCE Assessment station, NEWS2 calculation is expected when vital signs are presented. Verbalise the score, identify whether any single parameter is scoring 3, state the escalation action.

In the actual OSCE, the patient (or mannequin) will usually have observations that produce a NEWS2 score in the 5-7 range, enough to demonstrate that you can calculate and respond.

The next chapter covers ABCDE, the systematic assessment framework that often follows NEWS2 in clinical practice.