Recognising the seriously ill child and paediatric assessment triangle — formative SAQs

1. PAT interpretation and immediate response

“This infant has abnormal Appearance, Work of Breathing and Circulation to Skin. This is a PEPP-derived cardiopulmonary-failure pattern. I will treat the infant as critically unwell. Breathing may be ineffective from fatigue, and perfusion is impaired, until reassessment shows otherwise.” [1] [3]

I would call the senior paediatric and resuscitation teams now. I would name a leader, allocate roles and begin ABCDE while observations, history and equipment arrive. [12] [18]

PAT is an equipment-free first impression from the AAP PEPP framework. It records what I see at that moment. It is not a diagnosis, score, complete examination, PEWS or disposition rule. [1] [2] [3]

2. Immediate age-adapted ABCDE stabilisation

A — Airway. I would assess patency, position, abnormal sounds or silence, secretions and the ability to cry. I would also assess whether the infant can maintain and protect the airway. I would position the airway and clear an immediately remediable obstruction or secretions. I would avoid unnecessary agitation. If the airway is threatened or cannot be maintained, I would call paediatric airway expertise early. I would prepare age- and weight-appropriate equipment rather than use adult assumptions. [1] [5]

B — Breathing. I would assess respiratory rate under stated conditions, work, effectiveness, symmetry, air entry and fatigue. I would check a technically reliable saturation trend. The infant’s quieter phase is not reassuring by itself. Improvement requires easier breathing with better air entry, interaction and perfusion. Less effort with poor air entry or reduced responsiveness suggests exhaustion. [1] [5] [11] [12]

I would support oxygenation and ventilation through the active age-, condition- and jurisdiction-specific pathway. I would move early to skilled assisted support if breathing remains ineffective. I would check the probe, site, signal and agreement between the displayed pulse and the infant’s pulse. Pulse oximetry may overestimate oxygenation, including in children with darker skin. It does not measure ventilation. [11] [12]

C — Circulation. I would assess pulse rate and quality, skin colour and temperature, blood pressure, mental state and urine output. I would measure capillary refill with the technique and conditions stated. I would look for bleeding and follow the response over time. A normal blood pressure or capillary refill would not exclude shock. [7] [12]

I would control obvious loss and obtain timely vascular access. I would not allow repeated failed attempts to delay care. I would consider hypovolaemic, distributive, cardiogenic, obstructive or mixed shock. I would follow the current pathway for the likely pattern and available local support. Before each action, I would state the expected response. I would then check for benefit, no response or harm. I would not give one universal fluid or vasoactive regimen. [7] [12]

D — Disability. I would assess interaction, age-appropriate consciousness, pupils, posture, tone, movement and seizure activity. Reduced feeding and responsiveness make a bedside glucose important. I would confirm an unexpected result when feasible, but not delay correction of a clinically dangerous low. I would use the active age- and context-specific pathway, then recheck the glucose. [23]

E — Exposure. I would expose only enough to look for rash, injury, bleeding and device problems. I would preserve warmth and dignity. I would also preserve possible safeguarding evidence. [20]

3. Prioritised differential and parallel checks

My first respiratory threats are upper-airway obstruction and lower-airway, lung or pleural disease. I would also consider impaired respiratory drive and neuromuscular failure. [12]

My circulatory threats are hypovolaemic, distributive, cardiogenic, obstructive or mixed shock. Other urgent causes include serious infection, seizure, intracranial disease, clinically dangerous low glucose and other metabolic disorders. I would also consider toxin or medication exposure, trauma and safeguarding. [12] [20] [23]

Without delaying support, I would ask about onset and direction of change, apnoea, cyanosis, intake and urine. I would ask about fever or temperature change, collapse, seizure, exposure, ingestion, medicines and previous disease. I would ask the caregiver what changed and what worries them most. [15]

I would select bedside glucose, reliable oximetry, ECG, gas or lactate, focused samples and imaging only for a clear question. Each test must identify a reversible threat or change the immediate plan or destination. No test should delay airway, breathing or circulation support. [4] [12] [23]

4. Reassessment, escalation and evidence limits

After every intervention or important change, I would repeat PAT and ABCDE from A. I would compare the actual response with the result I expected. I would document benefit, adverse effects and remaining threats. I would revise the differential and name the next sign of failure. There is no fixed universal reassessment interval. [1] [12]

I would contact PICU or retrieval early if an ABCDE threat persists, worsens or responds only briefly. I would also escalate if the infant may need monitoring, airway, ventilation or circulatory support unavailable locally. I would not wait for arrest or diagnostic certainty. [21]

I would tell the team that no single normal finding proves safety. This includes PAT, blood pressure, capillary refill, saturation, temperature, PEWS and an individual test. PAT studies are heterogeneous. Several complex and remote paediatric groups are under-represented. [3] [4] [7] [21]

The Resuscitation Council UK 2025 Paediatric Life Support guidance is the named UK source for immediate ABCDE care, treatment of threats and reassessment. The ANZCOR 2026 PALS guideline is the binational Australian and Aotearoa New Zealand resuscitation source. Their operational details remain specific to their populations, phases and jurisdictions. My answer stops at first stabilisation, response assessment and activation of the relevant local pathway. [12] [21] [23]

1. Baseline summary and immediate child-plus-device assessment

“This is a technology-dependent 7-year-old with reduced interaction, more ventilator alarms and reduced urine compared with usual. I am concerned about unresolved airway, breathing, perfusion, device and safety problems. The clinic may not be able to provide the rescue or transport this child needs.” [15] [16] [21]

Observations near a population range do not overrule the caregiver’s report of deterioration. I would call the regional paediatric or critical-care and retrieval service early. I would repeat PAT and age-adapted ABCDE. At the same time, the nurse would obtain the emergency plan, usual observations and communication method. They would also confirm usual device settings and recent changes. [1] [15] [16] [21]

Evidence that standard recognition tools remain diagnostically accurate in children with complex needs is limited. Using the child’s baseline is necessary for communication and safety. It is not a claim that this adaptation has proven sensitivity. [3] [15] [16] [21]

For A and B, I would assess tracheostomy position and patency, secretions, air entry, work and effectiveness of breathing. I would look for fatigue and confirm a reliable oxygenation signal. In parallel, I would check the circuit, connections, power, oxygen source, filters and alarms. I would compare each item with the personal emergency plan and manufacturer or specialty plan. [11] [12] [16]

For C, I would assess pulses, skin, mental state, urine, blood pressure and any device or access function. For D and E, I would compare current interaction with usual. I would assess pain behaviour, seizure, relevant glucose, temperature, rash and injury. I would inspect every tube and stoma. [12] [16] [23]

I would treat threats through age- and weight-appropriate local pathways. I would request real-time specialist guidance. I would not improvise a tracheostomy, ventilation, shock or metabolic algorithm beyond the team’s skills. [11] [12] [16] [23]

2. Differential and first stabilisation

My first reversible threats are tracheostomy obstruction or displacement, secretion burden and circuit disconnection. I would also consider equipment or power failure. [16]

Next, I would consider respiratory infection, aspiration, atelectasis and pneumothorax. Circulatory causes include dehydration, sepsis, bleeding and other shock. Neurological causes include seizure and, where relevant, shunt or other neurological failure. [12] [16]

I would also consider clinically dangerous low glucose, electrolyte or other metabolic disturbance. Further possibilities are medication or toxin effect, pain, pressure injury and device complications. Accidental or non-accidental injury, neglect and induced illness remain in the differential. [16] [20] [23]

A working device does not prove the child is well. An unwell child does not prove the device is functioning. Targeted tests and cause-specific actions would follow the immediate threat, personal plan, specialist advice and available support. Each test must change support or destination. It must not delay ABCDE care. [12] [16] [20] [23]

3. Communication and safeguarding

I would ask the caregiver, “What is different from usual? What worries you most? What do the alarms usually mean? What has worked before?” I would acknowledge their expertise, document their words and include them in reassessment. [15] [16]

I would speak directly to the child using their usual communication aid and sensory adaptations. I would explain each step at the child’s developmental level. I would ask one clinician to update the child and caregiver. If language access is needed, I would use a professional interpreter. I would explain the immediate concern, uncertainty, retrieval plan and weather contingency. I would then check understanding. [16] [17]

Professional interpretation is safer than ad hoc interpretation for critical communication. However, the supporting evidence covers limited populations and methods. [15] [16] [17]

I would stabilise the child and protect immediate safety first. I would not ignore the bruise or assume that it proves maltreatment. I would record its site, size and appearance objectively. I would ask only necessary, open and non-leading questions. I would record spontaneous words exactly. [20]

I would consider whether the bruise fits the child’s development, devices or handling. When safe, I would examine for other injuries and preserve evidence. I would not use a family member to interpret a safeguarding discussion. I would contact the local senior clinician and activate the local safeguarding pathway. [17] [20]

Reporting thresholds, consent, agencies and information-sharing duties vary by jurisdiction. Safeguarding review must not delay retrieval for physiological risk. NICE NG76 is an England-and-Wales communication and documentation source. It is not a universal ANZ legal pathway. [17] [20]

4. Retrieval, handover and disposition

I would call retrieval before the child needs support unavailable in the clinic. I would give the child’s age and estimated weight, usual baseline, PAT and ABCDE findings, and current trend. I would describe the devices, emergency plan, timed actions and responses. I would state my differential, access, monitoring and paediatric-airway limits. I would include staff numbers, connectivity, distance, road conditions, weather, safeguarding information and family needs. I would clearly request the required support and destination. [18] [21]

With retrieval, I would agree who remains responsible until transfer. We would agree monitoring and reassessment based on acuity, not a fixed interval. I would name the next sign of failure and what the clinic can safely continue. We would plan equipment and power backup, escort, transport and receiving service. We would also agree what to do if communication or transport fails. [21]

Structured handover reduces information loss. Transport evidence supports skilled monitoring and planning for deterioration. It does not provide one referral threshold or escort formula for every service. [18] [21]

Remaining in an unsupported clinic or routine discharge is unsafe. The child remains different from baseline, has recurrent alarms and reduced urine, and transport is uncertain. I would choose a destination that can provide the expected airway, ventilation, monitoring, diagnostic and child-safety support. I would make that decision with retrieval, not from a diagnosis label alone. [16] [21]

Improvement before transfer would not automatically cancel transfer. I would require sustained return towards baseline, resolved device and safety concerns, and agreement from the specialist team. Follow-up must be practical. Pending results need named ownership. The family needs a specific safety net they can follow. A brief response alone is not enough. [16] [19] [21]

In Australia, the Australian Commission on Safety and Quality in Health Care deterioration standard requires local escalation criteria and routes for patient or family concern. It does not require one national paediatric score. [15]

ANZCOR Guideline 12.2 is a binational resuscitation source, not a retrieval policy. Australian state or territory and Aotearoa New Zealand service pathways govern retrieval and safeguarding. [20] [21]

In the UK, Resuscitation Council UK 2025 PLS guidance guides immediate resuscitation. Safeguarding and retrieval routes remain nation- and service-specific. [12] [20] [21]

In Canada, the RCPSC Pediatrics Competencies define competence expectations. They do not create a provincial or territorial retrieval or child-welfare rule. [15] [20] [21]