Vital Signs and NEWS2 Scoring Questions

Recognising a patient who is going downhill, early, is one of the most important things a ward nurse does, and NEWS2 is the tool the CBT uses to test it. The score is designed to catch deterioration before it becomes a crisis.

What it measures

NEWS2 adds up six physiological measurements: respiratory rate, oxygen saturation, systolic blood pressure, pulse, level of consciousness, and temperature. Supplemental oxygen adds further points. Each parameter scores according to how far it is from normal, and the points are totalled. The higher the total, the greater the concern and the more frequent the monitoring.

The escalation logic

Two things trigger escalation, and questions test both. The total matters: broadly, a low score means routine monitoring, a medium score means an urgent review, and a total of 7 or more is a high score needing an emergency response and critical care input.

But a single score of 3 in any one parameter also triggers escalation, even when the total looks reassuring. That is because one markedly abnormal vital sign can be dangerous on its own. A patient with a total of 2 who scores 3 for respiratory rate needs review, not a recheck in four hours. This is a favourite exam trap.

NEWS2 total	Clinical risk	Response
0	Low	Routine monitoring
1–4	Low	Registered nurse assessment
3 in any single parameter	Low–medium	Urgent review, increase monitoring frequency
5–6	Medium	Urgent review by a clinician, escalate
7 or more	High	Emergency assessment, critical care input, continuous monitoring

Respiratory rate and consciousness

Two parameters deserve special attention. Respiratory rate is often the earliest sign of deterioration, and also the one most often estimated rather than counted. Counting it properly, for a full minute, is genuinely valuable. And level of consciousness is scored using the ACVPU scale, with new confusion specifically flagged, because it can signal sepsis or low oxygen. Neither should be skipped.

The oxygen scale trap

NEWS2 has two oxygen saturation scales. Scale 1 is the default. Scale 2 is used for people at risk of type 2 respiratory failure, such as some patients with COPD who retain carbon dioxide, whose target saturation is usually 88 to 92 percent rather than 94 or above. Scale 2 is only used when a clinician has decided the person needs it. Getting this right matters, because over-oxygenating a CO2 retainer can cause harm. Next: the ABCDE assessment. Five NEWS2 scenarios first.