Airway Management and Intubation

Airway management is the set of techniques used to maintain a patent airway and ensure adequate oxygenation and ventilation in patients under anaesthesia or with impaired protective reflexes. It spans simple manoeuvres and face-mask ventilation, the placement of supraglottic airway devices, and tracheal intubation, and it underpins the safe conduct of general anaesthesia.

Definition

Airway management comprises the assessment, maintenance, and instrumentation of the upper airway to preserve oxygenation and ventilation, ranging from basic airway manoeuvres to tracheal intubation and surgical airway access.

Scope

This area orients the reader to airway management as practised within anaesthesiology. It introduces airway anatomy and preoperative assessment, the prediction of difficulty, laryngoscopy and tracheal intubation, supraglottic and alternative devices, and emergency airway rescue. It is a reference overview of a clinical domain rather than procedural or dosing guidance.

Sub-topics

• Airway Anatomy and Preoperative Assessment
• Difficult Airway Prediction
• Emergency Airway Management
• Laryngoscopy and Endotracheal Intubation
• Supraglottic Airways and Alternative Devices

Core questions

• How is the airway assessed before anaesthesia and difficulty anticipated?
• Which devices and techniques maintain oxygenation across the spectrum from mask ventilation to surgical airway?
• How are unanticipated difficult intubation and 'cannot intubate, cannot oxygenate' situations managed?

Key concepts

• Patent airway and oxygenation
• Face-mask ventilation
• Supraglottic airway devices
• Tracheal intubation
• Difficult airway
• Front-of-neck access
• Pre-oxygenation and apnoeic oxygenation
• Airway algorithms

Mechanisms

Loss of consciousness and neuromuscular blockade abolish pharyngeal muscle tone and protective reflexes, so the airway must be supported mechanically. Management proceeds along an escalating ladder: basic manoeuvres and bag-mask ventilation, supraglottic devices that seal around the laryngeal inlet, tracheal intubation that isolates the trachea with a cuffed tube, and, when these fail to oxygenate, front-of-neck access. Published difficult-airway algorithms organise these steps so that oxygenation is prioritised and escalation is timely (Apfelbaum, 2022; Frerk, 2015).

Clinical relevance

Airway management is foundational to anaesthetic practice, and failures are a recognised source of serious anaesthesia-related harm; the Fourth National Audit Project documented major airway complications and informed subsequent guidance. This entry describes the domain for orientation and does not provide individualised clinical instructions.

Epidemiology

Difficulty is relatively uncommon but consequential. The NAP4 project examined major airway complications during anaesthesia across the UK and highlighted contributory factors including failure to assess, plan, and rescue the airway (Cook, 2011).

Evidence & guidelines

The American Society of Anesthesiologists difficult airway practice guidelines and the Difficult Airway Society guidelines for unanticipated difficult intubation are the principal reference frameworks in this area, both structured around stepwise algorithms that prioritise oxygenation (Apfelbaum, 2022; Frerk, 2015).

History

Airway management evolved from basic resuscitation manoeuvres and early laryngoscopy toward standardised algorithms. The publication of difficult-airway algorithms by national societies, and audit work such as NAP4, shifted the field toward structured, oxygenation-first decision-making (Cook, 2011; Frerk, 2015).

Seminal works

• apfelbaum-2022
• frerk-2015
• cook-2011-nap4

Frequently asked questions

What is the difference between airway management and intubation?

Airway management is the broad practice of keeping the airway open and ensuring oxygenation by any means, from manoeuvres and mask ventilation to surgical access; tracheal intubation is one specific technique within it that places a tube into the trachea.

Why are difficult-airway algorithms important?

They provide a pre-planned, stepwise sequence that prioritises oxygenation and defines when to escalate, so that decisions are not improvised during a crisis (Apfelbaum, 2022; Frerk, 2015).