Post‑Intubation Confirmation and Management

Immediate Tube Confirmation

• Continuous waveform capnography combined with direct visual assessment is the most reliable method for confirming correct end‑tracheal tube placement and should be started immediately after intubation. 1
• Waveform capnography provides 100 % sensitivity and 100 % specificity for confirming correct tube placement in both cardiac‑arrest and non‑arrest patients. 1
• Mechanical ventilation must be withheld until the cuff has been inflated and an initial confirmation of tube position has been obtained. 2
• Clinical confirmation should include direct visualization of the tube passing through the vocal cords and observation of bilateral chest‑wall expansion with each breath. 2
• Auscultation alone is unreliable (sensitivity ≈ 94 %; specificity ≈ 66‑83 %) and should never be used as the sole confirmation method, especially when providers are wearing PPE or treating trauma patients. 1
• When waveform capnography is unavailable, colorimetric CO₂ detectors may be used as a backup, although they are less accurate. 1
• False‑negative capnography readings can occur during cardiac arrest with low pulmonary blood flow, pulmonary embolism, or severe airway obstruction; in these situations a second confirmation method (e.g., direct visualization or esophageal detector device) should be employed. 1

Airway Securing

• Inflate the end‑tracheal tube cuff to 20‑30 cm H₂O immediately after intubation, then secure the tube with tape or a commercial holder while avoiding neck compression. 2
• Record the tube depth (marked at the teeth or gums) before securing the tube to enable rapid detection of subsequent displacement. 2
• Obtain a chest radiograph, when feasible, to verify that the tube tip lies 3‑5 cm above the carina in the mid‑tracheal region. 3

Ventilation Strategies for Specific Conditions

• In patients with severe asthma or COPD, use lung‑protective ventilation: tidal volume 6‑8 mL/kg, lower respiratory rate, inspiratory flow 80‑100 L/min, and an I:E ratio of 1:4‑1:5 to prevent auto‑PEEP and barotrauma. 3

Sedation and Analgesia

• Sedation is frequently required after intubation to optimise ventilation, reduce ventilator dyssynchrony, minimise auto‑PEEP, and lower the risk of barotrauma. 3
• Expert consultation should be sought for optimal sedation management in mechanically ventilated patients. 3
• Continue delivering inhaled albuterol through the end‑tracheal tube in asthmatic patients, as pre‑intubation delivery may have been inadequate. 3

Prophylactic Measures

• Insert a nasogastric tube after the tracheal tube is secured and ventilation is established to reduce the need for later gastric decompression. 2
• If COVID‑19 status is unknown, obtain a deep tracheal sample using a closed suction system for testing, because upper‑airway samples may yield false‑negative results. 2

Continuous Monitoring

• Maintain continuous waveform capnography throughout the entire resuscitation and transport period. 1

Management of Acute Deterioration (DOPE Mnemonic)

• Displacement: Verify tube depth and capnography waveform; assess for migration into the esophagus or right mainstem bronchus. 3
• Obstruction: Suction the tube to remove mucus plugs or kinks. 3
• Pneumothorax: Look for asymmetric chest expansion and consider needle decompression if tension pneumothorax is suspected. 3
• Equipment failure: Inspect the ventilator and breathing circuit for leaks or malfunction. 3
• Auto‑PEEP (asthma/COPD): Disconnect the patient from the ventilator circuit to allow passive exhalation and dissipate high end‑expiratory pressure. 3
• Critical pitfall: In asthmatic patients, breath‑stacking from incomplete expiration can generate auto‑PEEP, leading to hyperinflation, tension pneumothorax, and hypotension; immediate disconnection from the ventilator is required. 3

Endotracheal Tube Securing: Best Practices

Proper ETT Securing Technique

• The American Heart Association recommends that the endotracheal tube (ETT) should be secured with tape or a commercial device in a manner that avoids compression of the front and sides of the neck, which could impair venous return from the brain 4, 5
• After confirming correct ETT placement with waveform capnography and clinical assessment, record the depth of the tube as marked at the front teeth or gums before securing, and document this initial position to detect any subsequent displacement 4, 6
• ETT can be secured using either adhesive tape or commercial tube holders (Class I, LOE C) 4, 7

Positioning Considerations

• Avoid tape application that compresses the front and sides of the neck to prevent impaired venous return from the brain 4, 5
• Commercial devices and backboards provide equivalent security to traditional taping methods during patient transport (Class IIb, LOE C) 4

Monitoring ETT Position

• Continuous waveform capnography is recommended as the most reliable method for confirming and monitoring correct ETT placement (Class I, LOE C-LD) 7, 8
• If waveform capnography is unavailable, alternatives include nonwaveform CO2 detector 7, esophageal detector device 8, and ultrasound by an experienced operator (Class IIa, LOE C-LD) 7, 8

Post-Securing Verification

• After securing the ETT, obtain a chest x-ray (when feasible) to confirm proper positioning of the tube above the carina 4, 6

Special Considerations

• Patient movement is one of the most important factors associated with unplanned extubation 9
• The choice between tape and commercial holders should consider patient factors (facial hair, skin integrity, burns) 9, expected duration of intubation 5, and transport needs 9, 10
• Failure to continuously monitor ETT position with waveform capnography can lead to complications 7, 11

Endotracheal Tube Securing and Verification

Pre-Securing and Securing Methods

• The American Heart Association recommends confirming proper ETT placement using clinical assessment, waveform capnography, and absence of gastric insufflation sounds before securing the tube, with a Class I, LOE B recommendation for re-verification after securing 12, 13
• The American Heart Association suggests maintaining the patient's head in a neutral position after securing the tube, as neck flexion or extension can displace the tube 12, 13

Post-Securing Verification and Monitoring

• The American Heart Association recommends obtaining a chest X-ray when feasible to confirm proper positioning of the ETT above the carina and verify that the tube is not in a mainstem bronchus, with a Class I recommendation for continuous waveform capnography monitoring 12
• The American Heart Association suggests re-verifying tube position during transport and each time the patient is moved, as patient movement is a significant factor associated with unplanned extubation 12, 13

Troubleshooting

• The American Heart Association recommends using the DOPE mnemonic to systematically evaluate an intubated patient's condition when it worsens, including assessing for displacement of the tube, obstruction of the tube 12, pneumothorax [12] [12, 13]