Paeds · clinical-assessment-and-reasoning
Recognising the seriously ill child and paediatric assessment triangle
Also known as Seriously ill child · Sick child assessment · Paediatric Assessment Triangle · PAT · Paediatric deterioration recognition
An age- and baseline-aware fellowship approach to recognising serious paediatric illness, using the Paediatric Assessment Triangle for first impression, immediate ABCDE stabilisation, repeated reassessment, capability-based escalation or retrieval, communication, safeguarding and safe disposition.
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Target exams
Red flags
- Reduced interaction, abnormal tone, inconsolability or altered responsiveness
- Severe work of breathing, poor air entry, fatigue or decreasing effort
- Pallor, mottling, cyanosis, weak pulses or worsening perfusion
- Ongoing convulsive seizure at 5 minutes
- Clinically dangerous low glucose or failure to improve after correction
- Deterioration despite treatment or need beyond local capability
- Caregiver concern, recurrent presentation or unexplained deterioration
Life stages
Care settings
Clinical exam formats
Board mappings
- General and Community Paediatrics
- Current 2026 PREP curriculum — Learning Objective 1.2.1: Communicate with a child or young person in a way which is appropriate to the position of that child within their own culture
- Current 2026 PREP curriculum — Learning Objective 2.2.1: Recognise, prioritise and manage an acutely ill infant, child or young person
- Current 2026 PREP curriculum — Learning Objective 2.2.3: Perform acute resuscitation and advanced life support
- Current 2026 PREP curriculum — Learning Objective 2.4.4: Assess and manage infants, children and young people with potential cardiac, respiratory or neurological emergencies or acute sepsis
- Current 2026 PREP curriculum — Learning Objective 2.4.5: Manage transfer of an unwell newborn, infant, child or young person
- Renewed curriculum for first-year trainees from 2027 — Learning goal 5: Clinical assessment – essential general paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 6: Clinical management – essential general paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 9: Clinical assessment and management – child safety and maltreatment
- Renewed curriculum for first-year trainees from 2027 — Learning goal 10: Clinical assessment and management – developmental and behavioural paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 11: Acute care and procedures
- Renewed curriculum for first-year trainees from 2027 — Learning goal 12: Communication with patients, families, and health professionals
- Renewed curriculum for first-year trainees from 2027 — Learning goal 14: Regional, rural, and remote paediatric care
- Renewed curriculum for first-year trainees from 2027 — Learning goal 15: Essential general paediatrics
- Renewed curriculum for first-year trainees from 2027 — Learning goal 17: Acute care
- Renewed curriculum for first-year trainees from 2027 — Learning goal 20: Child safety and maltreatment
- Renewed curriculum for first-year trainees from 2027 — Learning goal 21: Regional, rural, and remote paediatrics
- Clinical Applications
- Medical Sciences
- Long Cases
- Short Cases
- 2. Professional skills and knowledge: Communication
- 3. Professional skills and knowledge: Clinical procedures
- 4. Professional skills and knowledge: Patient management
- 6. Leadership and team working
- 7. Patient safety, including safe prescribing
- 9. Safeguarding vulnerable children
- General Paediatrics: Resuscitates, stabilises and treats extremely unwell babies, children and young people, liaising with specialist teams, as necessary
- General Paediatrics: Assumes the role of Acute Paediatric Team Leader, liaising with primary care services and other hospital and community specialist teams to effectively manage and coordinate patient flow, staffing, safety and quality in the paediatric acute assessment and inpatient units
- General Paediatrics: Recognises, investigates and manages safeguarding issues, including providing advice to general practitioners, other healthcare professionals and social care providers
- Foundation of Practice (FOP)
- Theory and Science (TAS)
- Applied Knowledge in Practice (AKP)
- Clinical
- History
- Communication
- Video
- General Pediatrics Content Outline — Domain 1: Preventive Pediatrics/Well-Child Care
- General Pediatrics Content Outline — Domain 7: Emergency and Critical Care
- General Pediatrics Content Outline — Domain 8: Child Abuse and Neglect
- General Pediatrics Content Outline — Domain 23: Ethics
- General Pediatrics Content Outline — Domain 24: Patient Safety, Quality Improvement, and Research Methods
- General Pediatrics Content Outline — Universal Task 1: Physiology and Pathophysiology
- General Pediatrics Content Outline — Universal Task 2: Epidemiology and Risk Assessment
- General Pediatrics Content Outline — Universal Task 3: Diagnosis
- General Pediatrics Content Outline — Universal Task 4: Management and Treatment
- General Pediatrics EPA 7: Recognizing a Severely Ill Patient, Providing Initial Management, and Mobilizing Resources Needed for Continued Care
- General Pediatrics EPA 8: Executing Clinical Handovers Within or Across Settings
- General Pediatrics EPA 10: Leading Interprofessional Teams to Provide Collaborative, Family-Centered Care
- General Pediatrics EPA 11: Promoting Equitable Care at the Level of Each Individual Patient and the Population to Address Racism and Other Contributors to Health Inequities
- Patient Care 3: Organize and Prioritize Patient Care
- Patient Care 4: Clinical Reasoning
- Patient Care 5: Patient Management
- Systems-Based Practice 1: Patient Safety
- Systems-Based Practice 3: System Navigation for Patient Centered Care – Coordination of Care
- Systems-Based Practice 4: System Navigation for Patient-Centered Care – Transitions in Care
- Interpersonal and Communication Skills 1: Patient- and Family-Centered Communication
- Interpersonal and Communication Skills 2: Interprofessional and Team Communication
- Interpersonal and Communication Skills 3: Communication within Health Care Systems
- Medical Expert
- Pediatrics: Transition to Discipline EPA #1 — Performing and presenting a basic history and physical examination
- Pediatrics: Foundations EPA #1 — Recognizing deteriorating and/or critically ill patients and initiating stabilization and management
- Pediatrics: Foundations EPA #8 — Communicating assessment findings and management plans to patients and/or families
- Pediatrics: Foundations EPA #10 — Transferring clinical information between health care providers during handover
- Pediatrics: Foundations EPA #11 — Coordinating transitions of care for non-complex pediatric patients
- Pediatrics: Core EPA #2 — Resuscitating and stabilizing critically ill patients
- Pediatrics: Core EPA #8 — Recognizing and managing suspected child maltreatment and/or neglect
- Pediatrics: Core EPA #10 — Leading discussions with patients, families and/or other health care professionals in emotionally charged situations
- Pediatrics: Core EPA #11 — Coordinating transitions of care for patients with medical or psychosocial complexity
Overview & Definition
A seriously ill child is one who may lose airway, effective breathing, circulation, neurological function or immediate safety unless the team acts promptly. You do not need a diagnosis before treating a life threat. Equally, a child who looks settled may still need urgent review because of age, history, a dangerous possible diagnosis, change from baseline or caregiver concern. One normal sign never settles the question. [4] [7] [15]
Keep four questions separate. How severe is the illness? Is an airway, breathing, circulation or neurological problem present now? Is the child getting worse? Could a dangerous diagnosis still be present despite a calm examination? PAT helps only with the first impression. Observations, history, examination, response to treatment, trend and caregiver concern answer the rest. [2] [3] [4]
The observable pathway from doorway to disposition
- 1
First 30 seconds
Look before touch. Describe Appearance, Work of Breathing and Circulation to Skin. If any finding worries you, call for help and start ABCDE immediately.
- 2
First 5 minutes
Name a leader, allocate roles, attach appropriate monitoring, prepare age- and weight-appropriate equipment, treat each ABCDE problem as found and reassess from A after every action.
- 3
Focused history and examination
Ask what is different from usual and what worries the caregiver most. Add age-specific observations, focused examination, baseline, devices, exposures and targeted tests without delaying treatment.
- 4
Reassess and escalate
Record the intended result, actual response, adverse effects and direction of change. Call senior, PICU or retrieval teams before the child needs support your service cannot provide.
- 5
Disposition and communication
Choose a destination that can provide the required monitoring and rescue. Hand over trend, timed treatment and response; explain the plan to the child and caregiver; continue safeguarding work in parallel.
References27ShowHide
- [1]Dieckmann RA, Brownstein D, Gausche-Hill M The pediatric assessment triangle: a novel approach for the rapid evaluation of children. Pediatric emergency care, 2010.PMID 20386420
- [2]Horeczko T, Enriquez B, McGrath NE, et al. The Pediatric Assessment Triangle: accuracy of its application by nurses in the triage of children. Journal of emergency nursing, 2013.PMID 22831826
- [3]Tørisen TAG, Glanville JM, Loaiza AF, et al. Emergency pediatric patients and use of the pediatric assessment triangle tool (PAT): a scoping review. BMC emergency medicine, 2024.PMID 39227775
- [4]Gomez B, Hernandez-Bou S, Garcia-Garcia JJ, et al. Bacteremia in previously healthy children in emergency departments: clinical and microbiological characteristics and outcome. European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2015.PMID 25252630
- [5]Fleming S, Thompson M, Stevens R, et al. Normal ranges of heart rate and respiratory rate in children from birth to 18 years of age: a systematic review of observational studies. Lancet (London, England), 2011.PMID 21411136
- [6]Fleming S, Gill P, Jones C, et al. Validity and reliability of measurement of capillary refill time in children: a systematic review. Archives of disease in childhood, 2015.PMID 25260515
- [7]Fleming S, Gill P, Jones C, et al. The Diagnostic Value of Capillary Refill Time for Detecting Serious Illness in Children: A Systematic Review and Meta-Analysis. PloS one, 2015.PMID 26375953
- [8]Trubey R, Huang C, Lugg-Widger FV, et al. Validity and effectiveness of paediatric early warning systems and track and trigger tools for identifying and reducing clinical deterioration in hospitalised children: a systematic review. BMJ open, 2019.PMID 31061010
- [9]Parshuram CS, Dryden-Palmer K, Farrell C, et al. Effect of a Pediatric Early Warning System on All-Cause Mortality in Hospitalized Pediatric Patients: The EPOCH Randomized Clinical Trial. JAMA, 2018.PMID 29486493
- [10]Schuh S, Lalani A, Allen U, et al. Evaluation of the utility of radiography in acute bronchiolitis. The Journal of pediatrics, 2007.PMID 17382126
- [11]Sharma M, Brown AW, Powell NM, et al. Racial and skin color mediated disparities in pulse oximetry in infants and young children. Paediatric respiratory reviews, 2024.PMID 38233229
- [12]Bjorklund A, Resch J, Slusher T Pediatric Shock Review. Pediatrics in review, 2023.PMID 37777656
- [13]Weiss, Scott L Surviving Sepsis Campaign International Guidelines for the Management of Sepsis and Septic Shock in Children 2026. Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies, 2026.PMID 41869844
- [14]Maitland K, Kiguli S, Opoka RO, et al. Mortality after fluid bolus in African children with severe infection. The New England journal of medicine, 2011.PMID 21615299
- [15]Mills E, Lin P, Asghari-Jafarabadi M, et al. Association between caregiver concern for clinical deterioration and critical illness in children presenting to hospital: a prospective cohort study. The Lancet. Child & adolescent health, 2025.PMID 40451224
- [16]Kuo DZ, Houtrow AJ Recognition and Management of Medical Complexity. Pediatrics, 2016.PMID 27940731
- [17]Boylen S, Cherian S, Gill FJ, et al. Impact of professional interpreters on outcomes for hospitalized children from migrant and refugee families with limited English proficiency: a systematic review. JBI evidence synthesis, 2020.PMID 32813387
- [18]Starmer AJ, Spector ND, Srivastava R, et al. Changes in medical errors after implementation of a handoff program. The New England journal of medicine, 2014.PMID 25372088
- [19]Burvenich R, Bos DA, Lowie L, et al. Effectiveness of safety-netting approaches for acutely ill children: a network meta-analysis. The British journal of general practice : the journal of the Royal College of General Practitioners, 2025.PMID 39117428
- [20]Bragança-Souza KK, Lopes de Lisboa J, Silva-Oliveira F, et al. Health Professionals: Identifying and Reporting Child Physical Abuse-a Scoping Review. Trauma, violence & abuse, 2024.PMID 36747372
- [21]Chaichotjinda K, Chantra M, Pandee U Assessment of interhospital transport care for pediatric patients. Clinical and experimental pediatrics, 2020.PMID 31477679
- [22]Shah SN, Bachur RG, Simel DL, et al. Does This Child Have Pneumonia?: The Rational Clinical Examination Systematic Review. JAMA, 2017.PMID 28763554
- [23]Faustino EV, Hirshberg EL, Bogue CW Hypoglycemia in critically ill children. Journal of diabetes science and technology, 2012.PMID 22401322
- [24]Hoffmann F, Schmalhofer M, Lehner M, et al. Comparison of the AVPU Scale and the Pediatric GCS in Prehospital Setting. Prehospital emergency care, 2016.PMID 26954262
- [25]Ramgopal S, Horvat CM, Cash RE, et al. Comparing AVPU and Glasgow Coma Scales Among Children Seen by Emergency Medical Services. Pediatrics, 2024.PMID 38993159
- [26]Young KD, Korotzer NC Weight Estimation Methods in Children: A Systematic Review. Annals of emergency medicine, 2016.PMID 27105839
- [27]McIntyre J, Robertson S, Norris E, et al. Safety and efficacy of buccal midazolam versus rectal diazepam for emergency treatment of seizures in children: a randomised controlled trial. Lancet (London, England), 2005.PMID 16023510