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Recognising deterioration and escalating early

Detect paediatric deterioration before collapse by combining first-impression physiology, repeated ABCDE assessment, age-specific observations, National PEWS trends, family concern and decisive senior escalation.

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Child with immediate airway, breathing or circulation compromise

A child who is apnoeic, gasping, cyanosed, profoundly exhausted, poorly perfused, bradycardic, unresponsive or fitting is peri-arrest until proved otherwise.

Action: Call the paediatric emergency or resuscitation team immediately, start an ABCDE approach and treat threats as they are found. Open and protect the airway, give oxygen for hypoxaemia or critical illness, support inadequate breathing with bag-mask ventilation, attach monitoring, obtain intravenous or intraosseous access without repeated delay, check bedside glucose and prepare age- and weight-appropriate resuscitation equipment and medicines. Use the Resuscitation Council UK paediatric algorithm, reassess after every intervention and arrange critical-care transfer early.

Open the sections you need. The overview is shown first.
01Role and principlesWho benefits and the main preventive aims.

Children can compensate with tachycardia and vasoconstriction before deteriorating quickly. Recognition therefore depends on pattern and trajectory, not waiting for hypotension or collapse. Combine three information streams: what the child looks like, measured physiology interpreted for age, and concern from family or staff who know the child. No score replaces a clinician who sees that the child is worsening.

The paediatric assessment triangle is a rapid, equipment-free first impression. Appearance covers tone, interaction, consolability, gaze, speech or cry and response to the environment. Work of breathing includes abnormal sounds, position, recession and effort. Circulation to skin includes pallor, mottling and cyanosis. An abnormal appearance suggests central nervous system or perfusion compromise; abnormal breathing suggests respiratory distress; combined abnormalities indicate greater physiological instability. It is a triage signal, not a diagnosis.

Airway assessment asks whether it is patent and maintainable. Listen for stridor, stertor, snoring, gurgling or silence; look for drooling, swelling, foreign-body risk, trauma and reduced consciousness. A speaking or crying child has airflow now but can still worsen. Position, open the airway using age-appropriate manoeuvres, suction visible secretions and use adjuncts only with appropriate skill. Call anaesthetic and ENT help early for a threatened airway; repeated upsetting examination may worsen obstruction.

Breathing assessment includes rate, pattern, symmetry, recession, nasal flaring, grunting, head bobbing, accessory muscle use, air entry, added sounds, oxygen saturation and, when needed, carbon dioxide. Tachypnoea and increased effort are early compensation. Exhaustion, irregular breathing, reduced effort, poor air entry or bradypnoea are pre-arrest signs. Oxygen saturation measures oxygenation, not ventilation; a child receiving oxygen can retain carbon dioxide despite a reassuring saturation.

Circulation assessment includes heart rate and rhythm, central and peripheral pulse volume, capillary refill, skin temperature and colour, mental state, blood pressure and urine output. Capillary refill is affected by ambient temperature and technique, so interpret it with the whole picture. Tachycardia may reflect fever, pain or fear but persistent tachycardia with abnormal perfusion is concerning. Hypotension indicates late decompensation. Bradycardia with poor perfusion in an ill child commonly follows hypoxia and requires immediate resuscitation.

Disability assessment uses AVPU or age-appropriate Glasgow Coma Scale, pupils, posture, tone and seizure activity. Check bedside glucose early in altered consciousness, seizure or unexplained deterioration and correct a low result using the local paediatric emergency protocol. Look for opioid or sedative exposure, raised intracranial pressure, infection, trauma and metabolic causes. New agitation can be hypoxia or shock rather than behavioural difficulty.

Exposure completes the survey while protecting dignity and temperature. Examine for rash, bleeding, injury, swelling, abdominal distension, line problems and signs of infection; measure temperature and review fluid balance. Consider safeguarding when the account and findings conflict. In infants, inspect the fontanelle and nappy output as relevant. Prevent heat loss during resuscitation because infants have a high surface-area-to-mass ratio.

National PEWS charts use age-specific observation sets and standardised escalation. Enter observations accurately, include oxygen and level of consciousness, and follow the organisation's linked response pathway. A score is a prompt to act, not permission to delay. Escalate when a single parameter is extreme, observations are incomplete because the child is uncooperative but appears unwell, treatment intensity is rising, a clinician is concerned or the family reports deterioration.

Trend is often the earliest warning. Plot observations rather than copying forward the latest values. Review frequency should increase as risk rises. Ask whether oxygen concentration, respiratory support, fluid requirement, analgesia, seizure treatment or nursing workload has escalated. A stable score achieved only through increasing support is not stable physiology. Repeated transient response followed by relapse also demands higher-level review.

Sepsis is one cause of deterioration, not a label for every abnormal observation. In a child with suspected infection, use age-specific NICE risk criteria, search for mottling, cyanosis, reduced interaction, weak cry, reduced urine, abnormal perfusion, respiratory compromise and non-blanching rash, and escalate high-risk features immediately. Obtain investigations and give antimicrobials according to the time-critical pathway, but do not delay airway, breathing or circulation support to complete tests.

Escalation must specify what is required. Use SBAR: identify the child and location; state the problem and severity; summarise relevant background; give current ABCDE observations, PEWS and trend; state treatment and response; request bedside senior review, resuscitation team or critical-care advice with a clear time. Repeat back the plan. If nobody attends or the child worsens, call again and move up the chain rather than assuming the message transferred responsibility.

Closed-loop teamwork reduces omission. Name the person assigned each action, require verbal confirmation and announce results. Use graded assertiveness: express concern, state why it is unsafe, request a specific action and escalate if unresolved. Any team member should be able to trigger a huddle. During the huddle, state diagnosis or uncertainty, trajectory, ceiling or escalation plan, equipment and staffing needs, and the next reassessment time.

Care location must match need. A child requiring repeated airway manoeuvres, escalating oxygen, non-invasive or invasive ventilation, vasoactive support, repeated fluid reassessment, continuous seizure management or very frequent observations needs early critical-care discussion. Stabilise before transfer, use an appropriately skilled transport team, secure lines and tubes, send weight and drug information and hand over unresolved risks. Do not let administrative bed searches delay clinical escalation.

After recovery, maintain surveillance because compensatory improvement may be temporary. Define target physiology and treatment ceilings, wean support cautiously and look for recurrence. Before discharge from acute care, observations should be appropriate for age and clinical context, carers should recognise concrete red flags and there must be a feasible route back. Review unplanned re-attendance or delayed escalation to identify system learning rather than individual blame.

Key points

  • Use the paediatric assessment triangle on first sight: appearance, work of breathing and circulation to skin; any abnormal arm means the child needs prompt hands-on assessment.
  • Move immediately to ABCDE, treat each life threat before proceeding and repeat the whole sequence after intervention or change.
  • Interpret heart rate, respiratory rate and blood pressure against age, temperature, pain, medication and trend; a single adult threshold is unsafe.
  • Respiratory deterioration usually precedes cardiac arrest in children; bradypnoea, exhaustion and reduced effort are late and dangerous.
  • Hypotension is a late sign of paediatric shock; assess perfusion using mental state, pulse quality, capillary refill, skin, urine output and lactate in context.
  • Bradycardia in a critically ill child often reflects severe hypoxia and demands ventilation-focused resuscitation, not observation for a lower PEWS.
  • National PEWS standardises age-specific observations and escalation, but it complements clinical judgement and never cancels clinician or family concern.
  • Trend matters: rising oxygen need, repeated tachycardia, falling urine output or increasingly frequent interventions may be more important than the current total score.
  • Escalate on any single extreme parameter, acute concern or required care beyond the setting's capability; do not wait for a composite score threshold.
  • Use an explicit SBAR call that states the immediate concern, current ABCDE findings, trajectory, treatment given and the response you need by what time.
  • If the response is inadequate, repeat the concern using graded assertiveness, contact the next senior or critical-care team and remain with the child.
  • Document the escalation time, named responder, agreed action and review deadline; ‘doctor informed’ is not a completed safety process.
02Assessment and patient selectionRisk features, eligibility and important cautions.
Respiratory distress

Tachypnoea, recession, nasal flaring, grunting or head bobbing shows increased work while the child still compensates.

Respiratory failure

Exhaustion, reduced effort, poor air entry, irregular breathing, bradypnoea, hypoxia or altered consciousness signals failing gas exchange.

Compensated shock

Tachycardia, cool peripheries, weak pulses, prolonged refill, reduced urine or altered behaviour occurs while blood pressure may remain normal.

Decompensated shock

Hypotension, bradycardia, markedly impaired consciousness or central pulse deterioration indicates late failure and impending arrest.

Neurological deterioration

New agitation, lethargy, reduced AVPU response, focal signs, abnormal pupils or seizure needs immediate glucose and ABCDE review.

Trajectory concern

Rising support, shorter intervals between interventions, recurrent abnormalities or family-reported change matters even without a high current score.

Red flags requiring action

  • Apnoea, gasping, central cyanosis, silent chest, severe stridor, exhaustion or decreasing respiratory effort indicates impending respiratory arrest.
  • Bradycardia with poor perfusion, weak pulses, mottling, prolonged capillary refill, altered consciousness or hypotension indicates decompensated shock or peri-arrest physiology.
  • A falling respiratory rate in a child who remains distressed is not improvement when consciousness, air entry or effort is worsening.
  • Non-blanching rash, meningism, reduced consciousness, focal neurology or a prolonged seizure requires immediate senior assessment and time-critical treatment.
  • A parent saying their child is markedly different, worsening or difficult to wake requires reassessment and escalation even when the numerical PEWS is low.
  • Repeated staff concern, unexpected re-attendance, failure to respond to treatment or rapid change over minutes overrides a reassuring earlier observation set.
03Baseline assessmentMeasurements that guide the plan and track progress.
Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

  1. 01
    First-line: repeated full observations with National PEWSFirst stepFirst line
    Why
    Quantify age-specific physiology, oxygen requirement and consciousness and activate standard escalation.
    Interpretation and limitations
    Use the total, every individual parameter and the trajectory; escalate clinical or family concern regardless of score.
  2. 02
    First-line: continuous cardiorespiratory monitoringFirst line
    Why
    Detect rapid change in a child with airway, breathing or circulation compromise.
    Interpretation and limitations
    Waveform quality and bedside examination must confirm alarms; normal saturation on oxygen does not prove adequate ventilation.
  3. 03
    Bedside blood glucose
    Why
    Identify a reversible cause of seizure or altered consciousness.
    Interpretation and limitations
    Treat a low value promptly using the local age- and weight-specific protocol and recheck after treatment.
  4. 04
    Blood gas with lactate
    Why
    Assess ventilation, acid-base disturbance and tissue stress when severe illness or shock is suspected.
    Interpretation and limitations
    Interpret with sampling route and trend; a normal lactate does not exclude early shock and a raised value is not specific to sepsis.
  5. 05
    Focused laboratory and microbiology tests
    Why
    Investigate suspected infection, anaemia, electrolyte disturbance, organ dysfunction or toxic exposure after immediate stabilisation.
    Interpretation and limitations
    Choose tests from the differential and do not delay time-critical treatment for sampling when access is difficult.
  6. 06
    Targeted imaging or point-of-care ultrasound
    Why
    Answer a defined question such as pneumothorax, cardiac function, effusion, obstruction or intracranial pathology.
    Interpretation and limitations
    Use only if it will change care without destabilising transfer; bedside ultrasound supplements rather than replaces clinical resuscitation.
04InterventionsLifestyle, treatment and escalation options.
01First sightPAT then immediate ABCDEFirst stepAny child appears unwell, behaves abnormally or is flagged by family or staff.
  1. 1Assess appearance, work of breathing and circulation to skin within seconds and call early help if any arm is abnormal.
  2. 2Perform ABCDE with age-appropriate observations, treating each threat before moving on.
  3. 3Repeat from airway after every intervention and record response, trend and the next review interval.
02PEWS triggerUse score and concern togetherThe National PEWS threshold, a single extreme parameter, trajectory or concern is present.
  1. 1Verify observations and compare with previous values, current support and age-specific norms.
  2. 2EscalationFollow the linked escalation response and state whether senior bedside review, outreach or critical care is required.
  3. 3EscalationSet a named responder and deadline; escalate further if review is late or the child worsens.
03High-risk infectionResuscitate and activate sepsis pathwaySuspected infection accompanies high-risk age-specific features or organ dysfunction.
  1. 1Call senior paediatric help, support ABC and obtain access, glucose, lactate, cultures and targeted tests without delaying resuscitation.
  2. 2Give antimicrobials and circulation treatment within the current age-specific pathway and reassess after every intervention.
  3. 3AlternativeSeek source control and critical-care input early while continuing to review alternative diagnoses.
04Inadequate responseEscalate the escalationEscalationRequested review does not occur, concern is dismissed or treatment is failing.
  1. 1Restate the concern, objective deterioration and specific required action using graded assertiveness.
  2. 2Contact the next senior, resuscitation, outreach or critical-care team and keep monitoring at the bedside.
  3. 3Document contacts and response times, hold a multidisciplinary huddle and move the child to a safer setting.
05Transfer or step-downMatch monitoring to residual riskThe child needs higher-level care or has improved after acute treatment.
  1. 1Before transfer, stabilise ABC, secure equipment and provide an explicit trajectory and treatment handover to the receiving team.
  2. 2EscalationAfter improvement, define physiological targets, support-weaning plan, observation frequency and triggers to re-escalate.
  3. 3Discharge only when clinically appropriate with accessible red flags, contact route and follow-up ownership.
05Targets, monitoring and follow-upResponse, safety and longer-term review.
  • Set observation frequency from severity and trajectory; increase it after deterioration, intervention or transfer and never rely on a routine ward interval.
  • Record oxygen concentration and delivery device, respiratory support and response, not saturation alone.
  • Trend heart rate, respiratory rate, work of breathing, perfusion, consciousness, urine output and blood pressure against age-specific ranges.
  • Repeat ABCDE after every fluid, airway manoeuvre, ventilation change, anticonvulsant or other acute intervention.
  • Track escalation calls, named responders, attendance time, decisions and the next mandatory review point.
  • Include family and bedside staff concern at every handover and document when it persists despite an apparently improved score.
06Special situationsVariants, exceptions and circumstances that change the usual approach.

The quiet child may be sicker

Loss of crying, interaction or respiratory effort during continuing illness can mark exhaustion rather than comfort.

Blood pressure reassures late

Children preserve pressure through vasoconstriction; perfusion and mental-state abnormalities commonly appear first.

Support intensity is a vital sign

The same observations achieved with more oxygen, fluid or staff intervention represent deterioration, not stability.

Concern is an escalation criterion

Parent, nurse or clinician concern carries information that a composite score may not capture and must trigger reassessment.

A request needs a deadline

‘Please review’ is weaker than naming the clinical risk, required response and time by which the next escalation occurs.

Reassessment closes the loop

Treatment without documented physiological response can hide non-response, excessive treatment or a wrong diagnosis.

07Common pitfallsFrequent interpretation and management errors.
  1. 01

    Do not wait for hypotension before diagnosing paediatric shock.

  2. 02

    Do not interpret falling respiratory rate as recovery when effort, air entry or consciousness worsens.

  3. 03

    Do not let a low PEWS override family, nursing or clinical concern.

  4. 04

    Do not use saturation alone to judge ventilation in a child receiving oxygen.

  5. 05

    Do not copy observations forward or calculate a score from incomplete measurements.

  6. 06

    Do not wait for every investigation before treating an immediate ABC threat.

  7. 07

    Do not accept ‘senior aware’ without an agreed action and review time.

  8. 08

    Do not repeatedly attempt intravenous access when intraosseous access is indicated in an emergency.

  9. 09

    Do not transfer an unstable child without appropriate stabilisation, skilled escort and handover.

  10. 10

    Do not discharge after transient improvement without age-appropriate observations and usable safety-netting.

Practice

Two practice questions

Question 1 of 20 correct
Paediatrics and child healthOriginal SBA

Parent concern despite low score

A toddler has a low National PEWS after treatment, but the parent repeatedly says the child is unusually sleepy and rapidly worsening. What is the best next action?

Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.

Authoring stateComplete draftClinical stateAwaiting reviewJurisdictionUnited Kingdom