Paeds · respiratory-sleep-and-airway
Respiratory distress and failure in children
Also known as Paediatric respiratory distress · Acute respiratory failure in children · Increased work of breathing · Impending respiratory arrest · Hypoxaemic and hypercapnic respiratory failure
A fellowship approach to the child in respiratory distress and failure: recognise the continuum from compensated increased work of breathing to exhaustion, clear the pre-arrest threat gate, localise the cause to airway, lung, pump or drive, distinguish type 1 from type 2 failure, and escalate oxygen and support from low-flow through high-flow nasal cannula, CPAP and mechanical ventilation while treating the cause.
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Target exams
Red flags
- Falling respiratory rate or reducing effort in a previously distressed child — impending arrest, not improvement
- Silent chest, absent breath sounds or minimal air entry despite visible effort
- Cyanosis or hypoxaemia unresponsive to high-concentration oxygen
- Bradycardia, mottling or altered conscious state accompanying respiratory distress
- Exhaustion, sweating and inability to speak or feed in an older child
- Drooling, tripod posture and stridor at rest suggesting critical upper-airway obstruction
- Apnoea, gasping or agonal breathing at any age
Life stages
Care settings
Clinical exam formats
Board mappings
- General and Community Paediatrics
- Acute and emergency assessment
- Respiratory Medicine
- Current 2026 PREP curriculum — Learning Objective 2.2.1: Recognise, prioritise and manage an acutely ill 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 15: Essential general paediatrics
- Respiratory 13–15
- Clinical Applications
- Medical Sciences
- Long Cases
- Short Cases
- 1. Emergency and acute care
- 4. Professional skills and knowledge: Patient management
- 7. Patient safety, including safe prescribing
- 11. Respiratory
- Foundation of Practice (FOP)
- Theory and Science (TAS)
- Applied Knowledge in Practice (AKP)
- Clinical
- History
- Communication
- Video
- General Pediatrics Content Outline — Emergency and critical care
- General Pediatrics Content Outline — Respiratory disorders
- General Pediatrics EPA 7: Recognizing a Severely Ill Patient, Providing Initial Management, and Mobilizing Resources Needed for Continued Care
- Patient Care 4: Clinical Reasoning
- Patient Care 5: Patient Management
- Systems-Based Practice 1: Patient Safety
- Medical Knowledge 2: Emergency and critical care
- Medical Expert
- 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: Respiratory (5–10%)
A toddler arrives grunting, nostrils flaring, ribs sucking in with every breath, and oxygen saturations of 88 per cent. Beside the trolley, a mother says her older child "has gone quiet" after an hour of laboured breathing. Both children are in trouble, but the quiet one may be closer to arrest. Reading that difference — rising effort versus failing effort — is the core skill this page teaches. [1] [12]
This hub owns the presentation logic for the child who cannot breathe well enough. Sister pages carry the disease-specific algorithms: acute severe asthma, bronchiolitis, croup and upper-airway obstruction, community-acquired pneumonia, and paediatric acute respiratory distress syndrome. [2] [6]
Work of breathing (rate, recession, grunt) · Oxygenation (SpO₂, cyanosis) · Rate trend — rising then falling is danger · Kid's colour and conscious state · Drive and pump — is effort adequate? · Oxygen first, always · Wheeze, stridor or crackles to localise · Next step: escalate support if not improving. [1] [11] [12]
Overview & Definition
Watch a well child breathe and you see almost nothing: quiet, effortless, regular. Respiratory distress is the visible extra effort a child recruits when that quiet breathing is no longer enough — you can see it from the end of the bed as tachypnoea, chest recession, nasal flaring, head-bobbing, tracheal tug, and grunting. The child is telling you their gas exchange is under threat and they are paying for it in muscle work. [1]
Respiratory failure is the point where the effort no longer succeeds. Defined physiologically, it is inadequate gas exchange: hypoxaemia despite supplemental oxygen (type 1) or carbon dioxide retention with respiratory acidosis (type 2), and often both as a child tires. The clinical face of failure is not a blood gas number but a child whose effort is falling, whose chest is going quiet, and whose conscious level is slipping. [6] [8]
The single most important teaching point is the direction of travel. A child ramps up effort to compensate, and while effort is high they are buying time. When a previously tachypnoeic, working child settles into a slower rate with less recession and no clinical improvement, that is exhaustion — the pre-arrest phase — not recovery. Mistaking fatigue for improvement is a classic and dangerous error. [1] [11]
References12ShowHide
- [1]Fleming S Normal ranges of heart rate and respiratory rate in children from birth to 18 years of age: a systematic review of observational studies. Lancet, 2011.PMID 21411136
- [2]Franklin D A Randomized Trial of High-Flow Oxygen Therapy in Infants with Bronchiolitis. N Engl J Med, 2018.PMID 29562151
- [3]Kepreotes E High-flow warm humidified oxygen versus standard low-flow nasal cannula oxygen for moderate bronchiolitis (HFWHO RCT): an open, phase 4, randomised controlled trial. Lancet, 2017.PMID 28161016
- [4]Milési C High flow nasal cannula (HFNC) versus nasal continuous positive airway pressure (nCPAP) for the initial respiratory management of acute viral bronchiolitis in young infants: a multicenter randomized controlled trial (TRAMONTANE study). Intensive Care Med, 2017.PMID 28124736
- [5]Ramnarayan P Effect of High-Flow Nasal Cannula Therapy vs Continuous Positive Airway Pressure Therapy on Liberation From Respiratory Support in Acutely Ill Children Admitted to Pediatric Critical Care Units: A Randomized Clinical Trial. JAMA, 2022.PMID 35707984
- [6]Emeriaud G Executive Summary of the Second International Guidelines for the Diagnosis and Management of Pediatric Acute Respiratory Distress Syndrome (PALICC-2). Pediatr Crit Care Med, 2023.PMID 36661420
- [7]Kneyber MCJ Recommendations for mechanical ventilation of critically ill children from the Paediatric Mechanical Ventilation Consensus Conference (PEMVECC). Intensive Care Med, 2017.PMID 28936698
- [8]Schlapbach LJ International Consensus Criteria for Pediatric Sepsis and Septic Shock. JAMA, 2024.PMID 38245889
- [9]Weiss SL Surviving Sepsis Campaign International Guidelines for the Management of Sepsis and Septic Shock in Children 2026. Pediatr Crit Care Med, 2026.PMID 41869844
- [10]Knightly R Inhaled magnesium sulfate in the treatment of acute asthma. Cochrane Database Syst Rev, 2017.PMID 29182799
- [11]Parshuram CS Effect of a Pediatric Early Warning System on All-Cause Mortality in Hospitalized Pediatric Patients: The EPOCH Randomized Clinical Trial. JAMA, 2018.PMID 29486493
- [12]Mills E Association between caregiver concern for clinical deterioration and critical illness in children presenting to hospital: a prospective cohort study. Lancet Child Adolesc Health, 2025.PMID 40451224