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Paeds Topicsinvestigations-procedures-and-technology

Paeds · investigations-procedures-and-technology

Endotracheal intubation and emergency airway equipment

Also known as Endotracheal tube · ETT placement · Paediatric intubation · Rapid sequence intubation · Definitive airway

A fellowship approach to endotracheal intubation and emergency airway equipment in children covering the indication (respiratory failure, loss of airway reflexes, severe shock, cardiac arrest), the age-based tube sizing formulas (uncuffed internal diameter equals age divided by 4 plus 4, cuffed equals age divided by 4 plus 3.5, depth at the lips equals age divided by 2 plus 12), the straight Miller blade for infants versus the curved Macintosh blade for older children, the infant airway anatomy that drives technique, the seven-step rapid sequence intubation procedure, the role of video laryngoscopy, waveform capnography as the standard for confirming tracheal placement, and the prevention of hypoxia, oesophageal intubation, right main bronchus intubation and post-extubation stridor.

high12 referencesUpdated 17 July 202621 min readVerification in progress

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Target exams

RACP General PaediatricsRACP DWERACP DCERCPCH Progress+MRCPCH TheoryMRCPCH ClinicalABP General PediatricsACGME PediatricsRCPSC Pediatrics

Red flags

  • A child with respiratory failure, a Glasgow Coma Scale of 8 or less, severe shock, or cardiac arrest who cannot protect or maintain the airway — secure a definitive airway now rather than watching the saturation fall
  • A tube placed but never confirmed with waveform capnography — unrecognised oesophageal intubation is catastrophic and preventable; never assume the position from chest rise alone
  • Repeated failed laryngoscopy attempts with falling saturation — stop, ventilate with a bag-mask, reposition, and call for senior or anaesthetic help before the next attempt
  • An infant who becomes bradycardic during laryngoscopy — vagal and hypoxic; stop at once, ventilate with 100 per cent oxygen, and give chest compressions if the rate stays low and perfusion is poor
  • Right main bronchus intubation from a tube passed too deep — withdraw until breath sounds are equal and confirm the depth on a chest radiograph
  • A cuffed tube inflated to a high pressure and left in situ — cricoid ischaemia, post-extubation stridor and subglottic stenosis; keep the cuff pressure low and the dwell time short

Life stages

neonateinfanttoddlerpreschoolschool-ageadolescent

Care settings

ed-acutedelivery-roomnicupicuwardretrievalrural-remote

Clinical exam formats

written-only

Board mappings

  • General and Community Paediatrics
  • Recognition and management of the acutely ill child
  • Procedural skills — airway management and endotracheal intubation
  • Emergency and resuscitation medicine
  • Current 2026 PREP curriculum — recognise, prioritise and manage an acutely ill child including emergency airway management
  • Clinical Applications
  • Medical Sciences
  • Procedural skills
  • Short Cases
  • Structured oral — acutely ill or collapsing child with airway compromise
  • 1.4 Safely and appropriately performs practical procedures and uses medical devices
  • 4. Patient management
  • 8. Patient safety
  • Foundation of Practice (FOP)
  • Applied Knowledge in Practice (AKP)
  • Clinical — structured oral and resuscitation with airway management
  • General Pediatrics Content Outline — Emergency Medicine; Airway management; Procedural skills
  • Universal Task 4: Management and Treatment
  • Patient Care 1: procedural competency
  • Systems-Based Practice
  • Medical Expert
  • Collaborator
  • Pediatrics: Procedural skill — endotracheal intubation
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Practise this topic

  • Short-answer question1
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Target exams

RACP General PaediatricsRACP DWERACP DCERCPCH Progress+MRCPCH TheoryMRCPCH ClinicalABP General PediatricsACGME PediatricsRCPSC Pediatrics

Red flags

  • A child with respiratory failure, a Glasgow Coma Scale of 8 or less, severe shock, or cardiac arrest who cannot protect or maintain the airway — secure a definitive airway now rather than watching the saturation fall
  • A tube placed but never confirmed with waveform capnography — unrecognised oesophageal intubation is catastrophic and preventable; never assume the position from chest rise alone
  • Repeated failed laryngoscopy attempts with falling saturation — stop, ventilate with a bag-mask, reposition, and call for senior or anaesthetic help before the next attempt
  • An infant who becomes bradycardic during laryngoscopy — vagal and hypoxic; stop at once, ventilate with 100 per cent oxygen, and give chest compressions if the rate stays low and perfusion is poor
  • Right main bronchus intubation from a tube passed too deep — withdraw until breath sounds are equal and confirm the depth on a chest radiograph
  • A cuffed tube inflated to a high pressure and left in situ — cricoid ischaemia, post-extubation stridor and subglottic stenosis; keep the cuff pressure low and the dwell time short

Life stages

neonateinfanttoddlerpreschoolschool-ageadolescent

Care settings

ed-acutedelivery-roomnicupicuwardretrievalrural-remote

Clinical exam formats

written-only

Board mappings

  • General and Community Paediatrics
  • Recognition and management of the acutely ill child
  • Procedural skills — airway management and endotracheal intubation
  • Emergency and resuscitation medicine
  • Current 2026 PREP curriculum — recognise, prioritise and manage an acutely ill child including emergency airway management
  • Clinical Applications
  • Medical Sciences
  • Procedural skills
  • Short Cases
  • Structured oral — acutely ill or collapsing child with airway compromise
  • 1.4 Safely and appropriately performs practical procedures and uses medical devices
  • 4. Patient management
  • 8. Patient safety
  • Foundation of Practice (FOP)
  • Applied Knowledge in Practice (AKP)
  • Clinical — structured oral and resuscitation with airway management
  • General Pediatrics Content Outline — Emergency Medicine; Airway management; Procedural skills
  • Universal Task 4: Management and Treatment
  • Patient Care 1: procedural competency
  • Systems-Based Practice
  • Medical Expert
  • Collaborator
  • Pediatrics: Procedural skill — endotracheal intubation
The fellowship answer

Endotracheal intubation secures the definitive airway when a child can no longer protect it, oxygenate, or ventilate. The decision is made on the bedside picture — respiratory failure, a Glasgow Coma Scale of 8 or less, severe shock, or cardiac arrest — and the act is a calm, rehearsed rapid sequence intubation. [9] [11]

Size the tube to the child, not to the moment. The uncuffed internal diameter in millimetres is age divided by 4 plus 4; the cuffed tube is age divided by 4 plus 3.5; and the depth at the lips in centimetres is age divided by 2 plus 12. A neonate takes a 2.5 to 3.5 millimetre tube with a straight Miller blade; the older child takes a curved Macintosh blade. [1] [11]

Confirm tube instant it is in — waveform capnography is the standard, a square-wave carbon dioxide trace over six breaths that proves tracheal placement. The threats are hypoxia from prolonged attempts and unrecognised oesophageal intubation, and both are prevented by preoxygenation, a single calm first look, and capnography. [5] [12]

Overview & Definition

Picture a four-year-old brought to the emergency department with severe bacterial tracheitis, drooling, sitting forward, retracting hard, and now beginning to get drowsy. The airway that was holding is about to be lost. Endotracheal intubation is the act that converts that closing airway into a secured one: a tube passed through the mouth, between the vocal cords and into the trachea, so that the airway is open, protected from aspiration, and connected to a ventilator. It is the definitive airway. [9] [11]

The reason a clinician reaches for the tube is that the alternatives have run out. A bag-mask keeps most sick children alive while you prepare, but it does not protect the lungs from vomit, it fatigues the operator, and it cannot deliver high airway pressures reliably. A laryngeal mask airway rescues the cannot-intubate-cannot-ventilate child, but it is not a definitive airway. Only a tube through the cords does all three jobs at once — opens, protects, and ventilates. [9] [10]

The skill is taught the same way across Australia and New Zealand, the United Kingdom and North America: a structured rapid sequence intubation, rehearsed on a manikin until the steps are automatic, with waveform capnography as the non-negotiable confirmation. The fellowship candidate is expected to know when to intubate, how to size the tube and choose the blade, how to perform the procedure, and — above all — how to prevent the two complications that kill children: hypoxia and an unrecognised tube in the oesophagus. [5] [11]

Give the examiner one sentence

Say: "Endotracheal intubation is the definitive airway, passed through the cords to protect, open and ventilate, when a child has respiratory failure, a GCS of 8 or less, severe shock, or cardiac arrest." Then give the tube-size formula, the blade choice, and capnography as the confirmation, and you have answered the whole topic. [9] [11]

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References12ShowHide
  1. [1]De Orange FA, Andrade RG, Lemos A, et al. Cuffed versus uncuffed endotracheal tubes for general anaesthesia in children aged eight years and under Cochrane Database of Systematic Reviews, 2017.PMID 29149469
  2. [2]Dariya V, Moresco L, Bruschettini M, et al. Cuffed versus uncuffed endotracheal tubes for neonates Cochrane Database of Systematic Reviews, 2022.PMID 35073407
  3. [3]Geraghty LE, Dunne EA, Ní Chathasaigh CM, et al. Video versus Direct Laryngoscopy for Urgent Intubation of Newborn Infants New England Journal of Medicine, 2024.PMID 38709215
  4. [4]Koepp-Medina G, Lusardi AC, Di Fonzo B, et al. Videolaryngoscopy versus direct laryngoscopy for paediatric tracheal intubation: a systematic review with meta-analysis and trial sequential analysis British Journal of Anaesthesia, 2025.PMID 41046172
  5. [5]Bullock A, Dodington JM, Donoghue AJ, et al. Capnography Use During Intubation and Cardiopulmonary Resuscitation in the Pediatric Emergency Department Pediatric Emergency Care, 2017.PMID 27455341
  6. [6]Selby ST, Abramo T, Hobart-Porter N An Update on End-Tidal CO2 Monitoring Pediatric Emergency Care, 2018.PMID 30507754
  7. [7]Mendez D, Zatarain J, Paul K, et al. Succinylcholine Versus Rocuronium for Pediatric Rapid Sequence Intubation in the Emergency Department Pediatric Emergency Care, 2026.PMID 41489184
  8. [8]Ching KY, Baum CR Newer agents for rapid sequence intubation: etomidate and rocuronium Pediatric Emergency Care, 2009.PMID 19287283
  9. [9]Black AE, Flynn PE, Smith HL, et al Development of a guideline for the management of the unanticipated difficult airway in pediatric practice Paediatric Anaesthesia, 2015.PMID 25684039
  10. [10]Jagannathan N, Aziz MF Difficult Airway Society 2025 guidelines for tracheal intubation: thoughtful preparation for success and systematic management of failure British Journal of Anaesthesia, 2026.PMID 41339170
  11. [11]Hsu G, von Ungern-Sternberg BS, Engelhardt T Pediatric airway management Current Opinion in Anaesthesiology, 2021.PMID 33935175
  12. [12]Merchant RM, Topjian AA, Panchal AR, et al Part 1: Executive Summary: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Circulation, 2020.PMID 33081530

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