Five papers to read before the next airway attempt
First pass successis built
The strongest new airway evidence is not mainly about the device. It’s about optimizing the attempt before the blade ever enters the mouth.
The argument
A laryngoscope never enters the mouth without context.
It arrives with a blade geometry, a shaped tube, the operator’s experience and habits, the patient’s physiology, and a clock. The five most useful airway papers from the past month examine those conditions around the attempt. Taken together, they offer a practical correction to device-centered thinking: first-pass success is built before the blade enters the mouth.
That does not make the device irrelevant. It makes the device inseparable from the technique required to use it, the physiology that must tolerate it, and the team prepared to recover when the plan does not work.
The month’s most consequential study is open to everyone. The complete five-paper review is available to PAC Premium members.
Video laryngoscopy is becoming routine. Geometry now matters more.
The COVALENT trial randomized 2,532 adults undergoing perioperative intubation to direct laryngoscopy, Macintosh-geometry video laryngoscopy, or hyperangulated video laryngoscopy. Among 2,423 patients in the primary analysis, both video strategies improved first-pass success.
The hyperangulated result is compelling, but it is not a blade-only result. Stylet use rose from 34.9% with direct laryngoscopy to 72.5% with Macintosh VL and 95.7% with hyperangulated VL. The study compared complete intubation strategies: blade geometry, view acquisition, tube shape, insertion path, and tube delivery.
Where to be skeptical: this was controlled anesthesia. Adequate preoxygenation was documented in 95% of patients, only 11% underwent rapid sequence induction, and planned flexible-scope intubations were excluded. First-pass success improved without a reduction in desaturation below 90% or time to capnographic confirmation. For emergency medicine, the result is strong support by extrapolation—not a direct ED trial.
Worth reading? Yes. Read the methods and device-use table, not only the abstract.
Read the COVALENT trialPAC Premium · Complete review
Continue the evidence review.
You’ve read the month’s strongest signal: the COVALENT trial strengthens the case for routine video laryngoscopy, while showing why blade geometry, tube preparation, and tube delivery must be treated as one strategy.
Four additional analyses for Premium members
- Intubating conditions as part of the pediatric oxygenation plan
- Why FONA competence requires mastery testing and scheduled reassessment
- A teachable orientation maneuver for flexible endoscopy
- Preoxygenation and DSI as active, monitored procedures
