Airway Management, Extubation, Tracheostomy, and Suctioning Concepts

1. Endotracheal Intubation

Intubation is indicated when a person cannot protect or maintain a patent airway, when ventilation or oxygenation fails, or when positive-pressure ventilation is required. Equipment preparation includes a laryngoscope (Macintosh or Miller blade) with a confirmed light, a correctly sized cuffed ETT, a stylet, suction (Yankauer), a bag-valve-mask with oxygen, and a CO2 detector (waveform capnography or colorimetric). The Mallampati assessment grades visible oropharyngeal structures to predict difficulty (Class I shows the soft palate, uvula, and pillars; Class IV shows only the hard palate); a higher class predicts a harder laryngoscopy. Placement confirmation is layered: primary is exhaled CO2 (waveform EtCO2 or a colorimetric detector turning purple-to-yellow); secondary is auscultation of equal bilateral breath sounds with absent epigastric sounds and symmetric chest rise; a chest radiograph (CXR) confirms the tip is above the carina.

2. Extubation and the Cuff Leak Test

Extubation removes the ETT once the person can protect and ventilate the airway. Readiness is judged with weaning parameters (see Topic 15) such as adequate spontaneous tidal volume, vital capacity, negative inspiratory force, and a rapid shallow breathing index below threshold. The cuff leak test predicts post-extubation stridor from laryngeal edema: the cuff is deflated and the tube occluded while listening for air leaking around the tube — an absent leak raises concern for edema. Equipment preparation means suction, the post-removal oxygen device, and emergency reintubation gear ready. Post-extubation stridor (high-pitched inspiratory sound from a narrowed upper airway) is recognized and escalated; it may be treated with nebulized racemic epinephrine, a topical vasoconstrictor that shrinks mucosal edema, as ordered.

3. Tracheostomy Care and Airway Suctioning

A tracheostomy is a surgically created stoma in the anterior neck into the trachea. The inner cannula is the removable inner sleeve of a double-lumen tube, cleaned or replaced to prevent obstruction. Stoma care keeps the surrounding skin clean and assessed for redness or drainage. Tie changes use a two-person technique (new tie before old is removed) so the tube is never unsecured. Emergency tube replacement readiness means recognizing decannulation or obstruction and keeping a spare tube plus an obturator at the bedside. Suctioning clears secretions: nasotracheal suctioning passes a catheter through the nose; endotracheal suctioning passes through an existing ETT or trach; inline (closed) suctioning keeps the catheter sealed inside the ventilator circuit, preserving positive end-expiratory pressure. Catheter-size selection uses an outer diameter no more than about half the airway's internal diameter to avoid occluding the lumen and causing atelectasis; vacuum pressure is regulated negative pressure (too high risks trauma, too low fails to clear), set per facility protocol and the current NBRC content outline.

How it works

1. An ETT with an inflated cuff seals the trachea so delivered gas reaches the lungs.
2. Exhaled air carries CO2; a detector or capnograph confirms the tube is in the airway.
3. A suction catheter applies regulated negative pressure to remove secretions and keep the airway patent.
4. Before extubation, the cuff is deflated and the tube occluded; audible airflow around the tube indicates the larynx is not tightly swollen.
5. Developing edema narrows the upper airway, producing stridor, treated by reducing swelling (racemic epinephrine) under physician order.

Common confusions

Memory aids

"M-A-C-L-E-S" for airway confirm-and-care: Mallampati predicts difficulty, Airway CO2 confirms placement, Cuff leak test predicts stridor, Leak absent means edema risk, Equipment at the bedside for emergencies, Suction at half the diameter with regulated pressure.

Quick review

Topic Recap

Endotracheal intubation secures and protects the airway; the technologist prepares equipment, grades the Mallampati view, and confirms placement first by exhaled CO2, then auscultation and chest radiograph. Extubation is guided by weaning parameters and the cuff leak test, with post-extubation stridor recognized and escalated for racemic epinephrine. Tracheostomy care keeps the inner cannula, stoma, and ties secure with spare equipment ready. Suctioning is nasotracheal, endotracheal, or inline (closed), using the smallest effective catheter and regulated pressure. Throughout, the technologist assesses, monitors, recognizes, and escalates — placement, removal, and medication decisions remain physician-directed.

Knowledge Check

1. Which finding is the primary confirmation that an endotracheal tube is in the trachea rather than the esophagus?
2. What does a Mallampati Class IV view suggest about intubation?
3. What does an absent cuff leak during the cuff leak test indicate?
4. Which suctioning method best preserves PEEP and reduces contamination risk?
5. What is the role of racemic epinephrine after extubation?

Answers and Rationales

1. Exhaled carbon dioxide detection (waveform capnography or colorimetric purple-to-yellow). The esophagus delivers no CO2; auscultation and CXR support but do not primarily confirm placement.
2. A difficult laryngoscopy/intubation. Class IV means poor laryngeal visualization, so backup devices and extra help should be prepared.
3. Possible laryngeal edema and higher post-extubation stridor risk. If no air leaks around the deflated cuff, the larynx may be swollen and could narrow after removal.
4. Inline (closed) suctioning. The catheter stays sealed in the circuit, so PEEP is maintained and the circuit is not opened to contamination.
5. It is a nebulized topical vasoconstrictor that reduces upper-airway mucosal edema, relieving post-extubation stridor, given under physician order.