The NORA Airway Problem — and What To Do About It
Nonoperating room anesthesia (NORA) now accounts for more than 36% of all U.S. anesthetics — and that share continues to grow. Yet the airway management infrastructure supporting these locations has not kept pace. The result is a well-documented, preventable harm pattern: adverse airway events in NORA are more likely to cause death or permanent brain damage than equivalent events in the main OR.
This review synthesizes the risk evidence and translates it into three practical intervention areas where anesthesia providers can drive measurable improvement:
- Making the sedation-versus-secured-airway decision explicitly and early
- Staging rooms for self-rescue when backup cannot arrive in time
- Managing the dominant modern intubation failure pattern — failed tracheal access despite adequate videolaryngoscope (VL) visualization — before it escalates to a cannot-intubate-cannot-oxygenate scenario
The Risk Evidence: What the Data Actually Show
Understanding the NORA risk picture requires separating three distinct data streams: volume and growth data, severity-of-harm data from closed claims, and procedure-specific event rate data.
NORA Growth
The most rigorously sourced data come from the NACOR registry: NORA grew from approximately 28% to 36% of all U.S. anesthetics between 2010 and 2014, with GI endoscopy as the single largest driver. Institutional surveys at major academic centers suggest the share has continued rising, with figures of 40–50% widely cited. This expansion shows no sign of plateau.1
Severity of Adverse Events: Closed Claims Signal
Metzner et al. analyzed ASA Closed Claims data and found that death or permanent brain damage occurred in approximately 54% of NORA-related claims, compared with 29% in OR claims. Inadequate oxygenation or ventilation was the primary mechanism in the majority of severe NORA events. Endoscopy suites and cardiac catheterization labs were the most represented locations.4
When monitoring is inadequate and rescue is delayed, the same physiological deterioration that is recoverable in the OR becomes irreversible in a remote location.
Patient Risk Factors: Who Is Coming to NORA Sites
OSA prevalence in GI endoscopy populations is estimated at 15–30%; because OSA is frequently undiagnosed, the true at-risk proportion is higher. OSA is independently associated with a 2–3× higher rate of airway obstruction events during propofol sedation. BMI above 35 is an independent predictor of unplanned airway intervention.6
Higher ASA physical status (ASA 3 and 4) is increasingly represented as procedural complexity grows and OR capacity is redirected to surgical cases. The combination of a sicker patient population, shorter safe apnea windows, and an environment with delayed rescue is the defining NORA risk pattern.
First-Pass Intubation Failure: The Proxy Data
No large prospective study exists for emergent intubation first-pass failure rates specifically in NORA. The best available proxies come from the ED and ICU. The DEVICE trial reports first-pass failure rates of approximately 30% with direct laryngoscopy vs. approximately 15% with VL in critically ill adults.7
NORA Airway Risk Is a Systems Problem — Not Just a Patient Problem
The risk data above share a common thread: harm in NORA is rarely caused by airway anatomy alone. It is amplified by the environment those airways are managed in.
| NORA Challenge | What It Means in Practice |
|---|---|
| Remote location | Help, difficult intubation equipment, and additional personnel may be 5–10 minutes away — or more |
| No dedicated airway staff | Unlike the OR, there may be no immediate second laryngoscopist or skilled nursing help available |
| Limited head access | Procedure equipment, gantries, drapes, and room layout restrict repositioning and access |
| Non-anesthesia team | Endoscopists, cardiologists, and IR physicians may not recognize early deterioration or know how to assist in an airway emergency |
| Variable equipment readiness | Suction, capnography, and rescue tools may not be consistently staged |
| Patient selection pressure | Higher ASA status patients are increasingly routed to NORA as OR capacity is constrained |
In NORA, airway rescue takes longer — so the plan must trigger earlier, equipment must be in the room before you need it, and every provider must be capable of managing the airway without waiting for help that may be 5–10 minutes away. Intubation self-rescue capability is not optional in NORA. It is the baseline expectation.
The Most Preventable NORA Disaster: Late Conversion from Sedation
Most NORA airway emergencies do not start as difficult intubations. They begin as routine deep sedation and drift into progressive obstruction, aspiration, or hemodynamic deterioration — then convert late, when the room is crowded, access is limited, and options have narrowed.
Choose one primary plan: sedation/MAC, SGA, or ETT. Name your conversion triggers — the specific conditions that will move you to intubation, without negotiation. If you cannot answer "What will make me intubate this patient?" before the case starts, the plan is incomplete.
Conversion Triggers That Work in NORA
- SpO₂ cannot be maintained above 92% with repositioning and modest FiO₂ escalation
- Active regurgitation, vomiting, or rising aspiration concern — no "one more minute" bargaining
- Access to the head will be restricted during the procedure (MRI gantry, heavy draping, scope in airway)
- Hemodynamic instability requiring controlled resuscitation
- Procedure duration or stimulation level that makes sedation management unreliable
This framing is consistent with APSF NORA consensus guidance: predictable problems should be met with predictable systems. A conversion trigger is a system. An improvised decision under a desaturating patient in a cramped room is not.2
Equipment: Portability and Self-Rescue Capability
The 2022 ASA Difficult Airway Guidelines specify that when a difficult airway is anticipated, airway equipment should be available in the room and a portable storage unit with specialized difficult airway equipment should be immediately available.8 In NORA, "immediately available" must be taken literally.
If I needed to manage an unanticipated difficult intubation right now, with no one else available and no cart arriving for 10 minutes, can I confidently manage it with what I have in this room? If the honest answer is "no," the room is not ready.
Practical NORA Intubation Equipment Bundle — Confirmed Before Patient Enters Room
| Airway Essentials | Plan A & Plan B Intubation Equipment |
|---|---|
| Suction on + Yankauer at head of bed | VL powered on; blade options ready |
| BVM within arm's reach (+ PEEP valve) | Static and dynamic tracheal access equipment staged |
| Oral and nasal airways (multiple sizes) | ETT options including one size smaller |
| SGA opened and lubricated | Waveform capnography — ready before first sedation drug |
| Help pathway confirmed: who, how, how fast | MRI: MR-compatible equipment confirmed; patient-out drill rehearsed |
In a remote location, the equipment in the room is the equipment you have. Everything else is hope.
VL Evidence, Guidelines, and the Visualization–Tracheal Access Gap
Video laryngoscopy has substantially improved glottic visualization, and the evidence supports its use in high-risk and difficult intubation scenarios.8 The multicenter DEVICE trial found VL increased first-pass intubation success compared with direct laryngoscopy in critically ill adults.7
The ASA 2022 Difficult Airway Guidelines recommend ensuring trained personnel and appropriate equipment are immediately available, and explicitly describe and support combination techniques (VL + steerable introducers) when individual approaches encounter difficulty.8 The 2022 DAS guidelines and their 2025 update recommend VL as the default approach when difficulty is anticipated or encountered, and note that with hyperangulated blades, a stylet, bougie, or flexible bronchoscope is typically needed for tube delivery.9
In the direct laryngoscopy era, most intubation failures were visualization failures. In the VL era, the dominant failure has shifted: you can see the cords, but you cannot deliver the tube. When VL is used, Plan B must be capable of addressing difficult tracheal access despite adequate visualization. If your Plan B for a failed VL attempt is "try VL again harder," you do not have a Plan B.
In NORA, VL Attempt Failure Is Especially Costly Because:
- Repeated attempts consume oxygen reserve quickly, and the safe apnea window may already be shortened by obesity, OSA, or the procedure itself
- Repeated laryngoscopy generates edema and bleeding that narrow options with each attempt
- Help may not arrive in time to assist with a rescue strategy, making the first provider's second attempt the effective last reliable attempt
- Head access may be restricted, limiting repositioning between attempts
Attempt Discipline: Change Intubation System Components Early
NORA punishes persistence with a failing technique. The DAS guidelines for unanticipated difficult intubation are explicit: abandon attempts when hypoxemia threatens, prioritize oxygenation between attempts, and move decisively along the pathway.
Intubation is a procedure requiring both visualization and tracheal access, accomplished by an intubation system with three components: (1) the operator, (2) visualization equipment, and (3) tracheal access equipment. Failure can occur at any component.
Any rescue attempt should be aimed at addressing the main reason for the failure of the prior attempt. Do not repeat Attempt 1 with a system that has already failed.
Plan A — Best-probability first attempt: VL should be the default approach for any anticipated difficult intubation per DAS guidelines, with fully optimized positioning, suction immediately available, and an introducer or stylet staged for tube delivery.
Rescue attempts require meaningful intubation system component change: Change VL blade geometry or size if visualization is the cause of failure. Change to dynamic tracheal access if static tracheal access equipment is the cause of failure. Change operator if experience is an issue.
In a main OR corridor, calling for help at Attempt 2 means backup arrives during Attempt 3. In a remote NORA location, calling for help at Attempt 2 may mean backup arrives after Attempt 4 or 5. Call earlier. In NORA, the window between "difficult" and "cannot intubate, cannot oxygenate" closes faster.
Combined Techniques: VL + Dynamic Introducers as the Most NORA-Ready Plan B
The ASA 2022 Difficult Airway Guidelines explicitly describe and endorse combination techniques: "If difficulty is encountered with individual techniques, combination techniques may be performed." Recognized combinations include VL paired with an optical stylet, video stylet, flexible scope, or dynamic/steerable introducer.8
RCT Evidence: Mazzinari et al. (2019)
A prospective randomized controlled trial directly compared Glidescope + fiberscope (used as a dynamic guide) against standard Glidescope with a preshaped stylet in 160 patients with predicted difficult airways. Results were compelling:12
| Outcome | Standard Glidescope | Glidescope + Dynamic Guide | P Value |
|---|---|---|---|
| First-attempt intubation success | 67% | 91% | .001 |
| Airway injury rate | 11% | 1% | .035 |
| Median time to successful intubation | 64 seconds | 50 seconds | .035 |
| Required alternative rescue technique | 24% | 4% | <.001 |
Published consecutive case series report 97% successful rescue after failed VL and DL when VL is paired with the Runnels Steerable Introducer (RuSI™).11
Why Combined VL + Dynamic Introducer Is Especially Well-Suited to NORA
- Operationalized as a single-operator technique — no second skilled provider required
- Equipment is compact and portable: stages alongside the VL, travels with the provider, requires no cart
- Preserves the VL visualization advantage rather than abandoning it for a different primary technique
The NORA Airway Playbook: A 60-Second Team Standard
The operational response is not a more complex algorithm. It is a simple, consistent pre-brief that every NORA team performs before every case with conversion potential.
- Primary plan stated: sedation / SGA / ETT
- Conversion trigger(s) stated out loud — specific and non-negotiable
- VL confirmed on; suction confirmed on and positioned at head
- BVM and SGA within arm's reach
- Plan B tracheal access tool staged at head of bed
- Waveform capnography ready before first sedation drug
- Help pathway confirmed: who, how, how fast — and is it realistic?
- "If we are not progressing, we change the plan early."
Item 7 is most often skipped — and in NORA it is the most important. "Who, how, how fast" must have honest answers. If the honest answer is "help is 5–10 minutes away and I'm not sure how to call them," that is a systems problem to fix before the case begins.
The goal is not a perfect technique. It is a reliable system — one that triggers early, self-rescues with portable equipment, escalates before the window closes, and does not depend on improvisation in a remote room with a deteriorating patient.
- 1.American Society of Anesthesiologists. Statement on Nonoperating Room Anesthesia Services (last amended October 18, 2023).
- 2.Beard J, et al. Consensus Recommendations for the Safe Conduct of Nonoperating Room Anesthesia: A Meeting Report from the 2022 Stoelting Conference of the APSF. APSF Newsletter, 2023.
- 3.Nagrebetsky A, et al. Growth of nonoperating room anesthesia care in the United States. Anesth Analg. 2017;124(4):1261–1267.
- 4.Metzner J, et al. Closed claims' analysis. Best Pract Res Clin Anaesthesiol. 2011;25(2):263–276.
- 5.Metzner J, Domino KB. Risks of anesthesia or sedation outside the operating room. Curr Opin Anaesthesiol. 2010;23(4):523–531.
- 6.Woodward ZG, et al. Unplanned airway interventions during monitored anesthesia care for GI endoscopy. Anesth Analg. 2019;128(6):1112–1121.
- 7.Janz DR, et al. (DEVICE Trial). Video versus direct laryngoscopy for tracheal intubation of critically ill adults. N Engl J Med. 2023;389(5):418–429.
- 8.American Society of Anesthesiologists. 2022 Practice Guidelines for Management of the Difficult Airway. Anesthesiology. 2022;136(1):31–81.
- 9.Difficult Airway Society (DAS). 2022 Guidelines for the Management of Unanticipated Difficult Intubation in Adults, with 2025 update. British Journal of Anaesthesia.
- 10.Shah AR, et al. Retrospective comparative analysis: combined techniques (VL + dynamic stylet). Open Anesthesiology Journal, 2023.
- 11.Pollard JE, et al. Rescue intubation case reports using articulating introducer with hyperangulated videolaryngoscopy.
- 12.Mazzinari G, et al. Effect of dynamic versus stylet-guided intubation on first-attempt success. Anesth Analg. 2019;128(6):1264–1271.
- 13.Schilling AL, et al. Economic burden methodology for emergent intubations outside the OR. White Paper, October 2019.
- 14.Runnels ST. Intubation systems development / VL era framing. Anesthesiology News supplements.
This document is intended for anesthesia providers and clinical educators. Always follow your institution's protocols and applicable device IFU guidance.