Oxygenation-first rescue after difficult or failed intubation: optimized attempts, supraglottic rescue, deliberate wake-up decisions, and immediate front-of-neck access for CICO.
A difficult or failed tracheal intubation becomes immediately life-threatening when oxygenation cannot be maintained. The priority is oxygen delivery, early recognition of a failed strategy, and progression through a pre-declared rescue plan rather than repeated traumatic laryngoscopy.
Caution
Cannot intubate, cannot oxygenate (CICO) is a time-critical emergency. Once CICO is declared, emergency front-of-neck airway should not be delayed by further ineffective laryngoscopy attempts.
Difficult airway / failed intubation: oxygenation over repeated attempts
Oxygenation is the priority. Repeated laryngoscopy without a meaningful strategy change adds trauma and delays rescue.
Call experienced airway help early.
Optimize position, preoxygenation and apneic oxygenation; ensure suction is working.
Have primary intubation, supraglottic rescue, wake-up and emergency front-of-neck plans/equipment ready before induction when difficulty is anticipated.
Use the most experienced available operator and an optimized device strategy; videolaryngoscopy is often preferred when available and appropriate.
Use bougie/stylet, external laryngeal manipulation and neuromuscular blockade as clinically appropriate.
Limit repeated attempts and make a meaningful strategy change after failure.
Stop repeated laryngoscopy and reoxygenate.
Insert an appropriate second-generation supraglottic airway when feasible.
Decide deliberately whether waking the patient is safe or whether a defined rescue/intubation strategy is required.
Caution
Evidence frame: Difficult Airway Society 2025 guidelines for management of unanticipated difficult tracheal intubation in adults. Institutional airway carts, drugs, staffing and front-of-neck technique remain the local operational standard.
Evidence status
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The 7 Ps of ICU intubation, the physiologically difficult airway, BOUGIE/DEVICE video laryngoscopy trials, hemodynamic optimization, waveform capnography, and scalpel-bougie cricothyroidotomy.
Complete clinical topic overview. For the full 10-level interactive course, visit Master MV. Covers core ventilator modes, respiratory mechanics (Cstat, Raw, driving pressure), waveform dyssynchrony analysis, VILI prevention, and liberation protocols.