Recognising Early Clinical Deterioration: What are we missing?
- Jan 30
- 2 min read
Updated: Feb 11
Evidence-based learning with guided reflection for CPD and revalidation
Estimated Learning Time: 20 – 30 minutes
Suitable for: Nurses, AHPs, clinical staff involved in direct patient care
CPD Evidence: Yes – reflection template mapped to NMC and HCPC standards provided
To explore this topic in greater depth, including practical case examples and structured assessment, view our related courses.
Introduction
Failure to recognise early clinical deterioration remains a significant contributor to avoidable patient harm. Subtle changes in physiology are often present hours before serious adverse events — yet these signs can be missed, misinterpreted, or normalised in busy clinical environments.
Early recognition of deterioration is not about identifying the critically unwell patient — it is about recognising when something is starting to change and acting early.
What Do We Mean by “Early Deterioration”?
Clinical deterioration often begins with small but meaningful changes, including:
Increasing respiratory rate
Subtle drops in oxygen saturation
Rising heart rate
Changes in blood pressure trends
Altered conscious level or behaviour
Reduced urine output
These changes may not trigger immediate concern in isolation but are significant when viewed together or over time.
Common Reasons Deterioration Is Missed
Research and incident reviews consistently highlight several recurring factors:
Over-reliance on single observations rather than trends
Incomplete or infrequent observations
Normalisation of abnormal vital signs
Lack of confidence in escalation
Cognitive overload and time pressure
Importantly, many of these are system and education issues, not individual failings.
The Role of Respiratory Rate
Many recent large-scale studies report that respiratory rate is one of the most sensitive early indicators of deterioration — yet it is also the most inaccurately measured.
An unexplained increase in respiratory rate should always prompt further assessment, even if other observations appear within normal limits.
Key point:
A “normal” oxygen saturation does not rule out respiratory compromise.
Escalation Is a Clinical Skill
Recognising deterioration is only part of the process. Effective escalation requires:
Confidence in clinical judgement
Clear communication
Understanding local escalation pathways
Willingness to challenge reassurance bias
Education that links physiology to decision-making improves both recognition and escalation.
Implications and Reflection for Practice
After engaging with this topic, consider:
Are trends reviewed as well as single values in your area?
How confident do you feel in escalating early concerns?
Are early warning scores supporting or replacing clinical judgement?
Can you think of a case you have been involved in where early deterioration was not identified? What would you do differently next time?
Early recognition saves lives — but only when combined with timely action.
Key References
Aglen, S. et al. (2025) Respiratory Rate as a Predictor of Clinical Deterioration and Mortality: A Scoping Review. https://doi.org/10.1111/aas.70113Digital Object Identifier (DOI)
Brekke IJ, Puntervoll LH, Pedersen PB, Kellett J, Brabrand M (2019) The value of vital sign trends in predicting and monitoring clinical deterioration: A systematic review. PLoS ONE 14(1): e0210875. https://doi.org/10.1371/journal.pone.0210875
Royal College of Physicians. National Early Warning Score (NEWS2): Standardising the assessment of acute-illness severity in the NHS.
Download our ready to use CPD Reflections template below.
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