Dr. Jeff Jarvis, a medical expert focused on emergency medicine, dives into the findings from the PREOXI Trial, examining the effectiveness of non-invasive ventilation versus traditional face masks for patient pre-oxygenation before intubation. He reveals critical insights on managing peri-intubation hypoxia and discusses the trial's implications for improving patient safety. The conversation also highlights the importance of evidence-based practices in emergency settings and encourages healthcare professionals to adopt effective pre-oxygenation techniques.
Utilizing non-invasive ventilation significantly reduces peri-intubation hypoxemia, improving patient safety during intubation procedures compared to face mask methods.
Implementing an evidence-based bundle of care for intubation, including specific strategies and physiologic targets, dramatically decreases peri-intubation hypoxia rates.
Deep dives
Importance of Non-Invasive Ventilation for Pre-Oxygenation
Utilizing non-invasive ventilation (NIV) significantly improves pre-oxygenation during intubation procedures, as evidenced by recent findings. A randomized controlled trial demonstrated that the use of NIV led to a substantial reduction in peri-intubation hypoxemia, showing 9.1% in the NIV group compared to 18.5% in the mask group. This study focused on critically ill patients, many of whom were not hypoxic before intubation, yet still experienced better outcomes with NIV. The results suggest that even in non-hypoxic patients, NIV should be the preferred method for pre-oxygenation to enhance patient safety during intubation.
Challenges in Current Intubation Practices
The podcast delves into the challenges faced in current intubation practices, particularly regarding the commonly used non-rebreather mask for pre-oxygenation. Despite ongoing debates in the medical community about the effectiveness of this method in non-hypoxic patients, evidence reveals that non-invasive ventilation provides superior outcomes. The speaker emphasizes the need for a paradigm shift in how intubation is approached, moving away from convenience-driven practices that may compromise patient safety. Recommendations are made for a structured protocol that includes specific physiologic targets prior to attempting intubation to prevent adverse events.
Developing Evidence-Based Protocols for Safer Intubation
An evidence-based bundle of care was developed to enhance the safety and success rates of intubation procedures. This protocol includes mandatory delayed sequence intubation, optimal patient positioning, and the application of apneic oxygenation using NIV. A significant finding from the developed system is a substantial decrease in peri-intubation hypoxia from 45% to 3.5%, signifying the effectiveness of the implemented strategies. These results highlight the importance of rigorous application of best practices in emergency medical settings to improve patient outcomes during critical procedures.
This is a must-listen! What’s the best way to pre-oxygenate our patients prior to intubation? The evidence for this question has been mixed for some time. Dr Jarvis discusses the PREOXI Trial, which directly compares preoxygenation with non-invasive ventilation compared to a face mask to see which provides the best protection against peri-intubation hypoxia. This is an important trial that sheds light on a key component of our bundle of care to make intubation safer.
Citations:
Gibbs KW, Semler MW, Driver BE, Seitz KP, Stempek SB, Taylor C, Resnick-Ault D, White HD, Gandotra S, Doerschug KC, et al.: Noninvasive Ventilation for Preoxygenation during Emergency Intubation. N Engl J Med. (2024)
Jarvis JL, Gonzales J, Johns D, Sager L: Implementation of a Clinical Bundle to Reduce Out-of-Hospital Peri-intubation Hypoxia. Annals of Emergency Medicine. 2018;72:272–9.
Groombridge C, et al: A prospective, randomised trial of pre-oxygenation strategies available in the pre-hospital environment. Anaesthesia. 2017;72:580–4.
Groombridge C, et al: Assessment of Common Preoxygenation Strategies Outside of the Operating Room Environment. Acad Emerg Med. 2016;March;23(3):342–6.
Baillard C, et al: Noninvasive ventilation improves preoxygenation before intubation of hypoxic patients. Am J Respir Crit Care Med. 2006;July 15;174(2):171–7.
Ramkumar V, et al: Preoxygenation with 20-degree head-up tilt provides longer duration of non-hypoxic apnea than conventional preoxygenation in non-obese healthy adults. J Anesth. 2011;25:189–94.
Pourmand A, et al: Pre-oxygenation: Implications in emergency airway management. American Journal of Emergency Medicine. doi: 10.1016/j.ajem.2017.06.006
Solis A, Baillard C: Effectiveness of preoxygenation using the head-up position and noninvasive ventilation to reduce hypoxaemia during intubation. Ann Fr Anesth Reanim. 2008;June;27(6):490–4.
April MD, Arana A, Reynolds JC, Carlson JN, Davis WT, Schauer SG, Oliver JJ, Summers SM, Long B, Walls RM, et al.: Peri-intubation cardiac arrest in the Emergency Department: A National Emergency Airway Registry (NEAR) study. Resuscitation. 2021;May;162:403–11.
Trent SA, Driver BE, Prekker ME, Barnes CR, Brewer JM, Doerschug KC, Gaillard JP, Gibbs KW, Ghamande S, Hughes CG, et al.: Defining Successful Intubation on the First Attempt
Using Both Laryngoscope and Endotracheal Tube Insertions: A Secondary Analysis of Clinical Trial Data. Annals of Emergency Medicine. 2023;82(4):S0196064423002135.
Pavlov I, Medrano S, Weingart S: Apneic oxygenation reduces the incidence of hypoxemia during emergency intubation: A systematic review and meta-analysis. AJEM. 2017;35(8):1184–9.
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