Early warning scores (NEWS2) and when to escalate
- Assessment
NEWS2 scores six vital signs plus oxygen use; the higher the total, the more urgent the response and the more frequent the checks.
What it is
NEWS2 is an early warning score from the Royal College of Physicians for adults. Each parameter gets points according to how far it is from normal, and the points are added up. The total reflects the risk of deterioration and sets three things: how often to measure again, how urgently someone must review the patient, and what skills the responder needs. It does not replace clinical judgement: any concern justifies escalation. Many facilities in Colombia use NEWS2 or their own score; the local protocol always applies.
Reference values
- Total 0: checks at least every 12 hours.
- Total 1 to 4: checks every 4 to 6 hours; the registered nurse decides whether to increase frequency or escalate.
- Total 5 to 6, or a 3 in one parameter: checks at least hourly and urgent review.
- Total 7 or more: continuous monitoring and emergency assessment.
- Saturation scale 2: only in confirmed hypercapnia, with a target of 88 to 92 %, decided by a competent clinician.
What you need
- A full set of vital signs measured with good technique.
- The oxygen record: room air, or L/min and device.
- Assessment of consciousness with ACVPU (alert, new confusion, responds to voice, to pain, or unresponsive).
- The facility chart or system with the ranges for each score and the escalation pathway.
How to measure it (and why)
- Measure every parameter with good technique — one poorly measured value changes the score and the response.
- Assess consciousness with ACVPU and ask about new confusion — confusion can be subtle and scores high.
- Use the indicated saturation scale and cross out the other — scale 2 applies only if a clinician ordered it.
- Assign the points with the facility chart, add the oxygen points and work out the total — both the total and any red parameter count.
- Set the frequency of checks by risk level — the score determines when to measure again.
- Escalate by score along the protocol pathway and communicate in a structured format — the response must come on time from the right person.
- Record the score, the response, who was told and the time — the record shows the chain of actions.
How to read it
- The trend matters: a score that rises from one check to the next is a warning even if it crosses no threshold.
- Electronic systems may calculate the score, but they must not alter the ranges or thresholds.
- Real clinical concern justifies escalation even when the score is low.
- For patients at the end of life, the team may decide to stop routine checks; this is agreed with the family and recorded.
Next step: when to call for help
- Total 1 to 4: assessment by the registered nurse, who decides whether to increase checks or escalate.
- A 3 in one parameter or a total of 5 to 6: call the ward doctor or rapid response team urgently and measure at least hourly.
- Total of 7 or more: activate the emergency response per protocol and keep the patient on continuous monitoring.
- Always escalate when you are worried about the patient, whatever the score.
Test yourself
Think of the answer, then tap the question to see it.
Which parameters make up the NEWS2 score?
Respiratory rate, oxygen saturation, systolic pressure, pulse, level of consciousness or new confusion and temperature, plus 2 points for oxygen.
What total score is the key threshold for an urgent response on NEWS2?
A total of 5 or more. With known or suspected infection it should prompt you to think of sepsis.
What do you do if a single parameter scores 3 even though the total is low?
Ask for urgent review by a clinician and measure at least hourly until a plan of care is set.
In whom is NEWS2 not used?
In people under 16 and in pregnancy; it is also unreliable in high spinal cord injury.
When is saturation scale 2 used?
Only in confirmed hypercapnia with a target of 88 to 92 %, when a competent clinician decides it and records it.
Connections
Educational content for students; it does not replace your institution's protocols, supervised clinical training or a prescriber's order. Dose-calculation examples use made-up numbers: they are educational, not a clinical order.
Sources: National Early Warning Score (NEWS) 2 (Royal College of Physicians, 2017); National Early Warning Score (NEWS) 2: executive summary and recommendations (Royal College of Physicians, 2017).
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Representative model, for educational purposes only.