Literature Review: Prehospital Intubation Training

Literature Review: Prehospital Intubation Training

Warner KJ, Carlbom D, Cooke CR, et al. Paramedic training for proficient prehospital endotracheal intubation. Preh Emerg Care 14(1): 103-8, Jan-Mar 2010.


Background--Emergency airway management is an important component of resuscitation of critically ill patients. Multiple studies demonstrate variable endotracheal intubation (ETI) success by prehospital providers. Data describing how many ETI training experiences are required to achieve high success rates are sparse. Objectives--To describe the relationship between the number of prehospital ETI experiences and the likelihood of success on subsequent ETI, and to specifically look at uncomplicated first-pass ETI in a university-based training program with substantial resources.

Methods--We conducted a secondary analysis of a prospectively collected cohort of paramedic student prehospital intubation attempts. Data collected on prehospital ETIs included indication, induction agents, number of direct laryngoscopy attempts, and advanced airway procedures performed. We used multivariable generalized estimating equations analysis to determine the effect of cumulative ETI experience on first-pass and overall ETI success rates.

Results--Over a period of three years, 56 paramedic students attempted 576 prehospital ETIs. The odds of overall ETI success were associated with cumulative ETI experience (odds ratio 1.097 per encounter; 95% CI=1.026-1.173; p=0.006). The odds of first-pass ETI success were associated with cumulative ETI experience (OR 1.061 per encounter; 95% CI=1.014-1.109; p=0.009).

Conclusion--In a training program with substantial clinical opportunities and resources, increased ETI success rates were associated with increasing clinical exposure. However, first-pass placement of the ETT with a high success rate requires high numbers of ETI training experiences that may exceed the number available in many training programs.


Few would argue that expertly performed ETI effectively provides an effective and secure airway. However, there is also little doubt that significant patient harm can result from numerous unsuccessful ETI attempts complicated by airway trauma, hypoxia, hypercarbia and aspiration, and in those situations an alternative airway would be a better option. The open question is, what level of proficiency on the part of the intubator, given the unique training and deployment challenges of EMS, is the best for our patients?

There are many questions that affect that decision. One is whether the alternatives are acceptable. The King Airway and laryngeal mask airway are relatively easy to insert and are effective for ventilation and oxygenation. They do not provide the same degree of aspiration protection as an endotracheal tube, but it is not known how important that is. Another is whether there are significant negative consequences to a delayed or unsuccessful ETI. Cardiac arrest studies have indicated that continuous high-quality chest compressions improve outcomes, and that ETI causes prolonged interruptions. Also, long ventilation pauses during rapid sequence intubation increase mortality in brain-injured patents.

So if it's important to be able to do it well, how feasible is it to adequately train paramedics in ETI? The authors here have shown it can be done, but that it took an average of 29 ETIs (20 of them in prehospital patients) to achieve an 80% first-pass success and 95% overall success rate. This is consistent with a previous study that found it took 20-25 ETIs to achieve a 90% success rate (Wang, Preh Emerg Care 9:156, 2005). It is also in line with training standards for physicians, who are required to perform 35-60 ETIs in emergency medicine and anesthesia. In fact, with optimal training and high frequency of skills use, paramedics and physicians in the same air ambulance service have been shown to have identical 97% success rates (Fullerton, Resusc 80:1,342, Dec 2009).

Continue Reading

We should be looking at this from the perspective of how to provide the safest and best medical care for our patients. It may be that what we now accept as adequate training and ongoing experience is not sufficient. EMS systems should consider this in their training, scopes of practice, treatment protocols and QI programs.

Angelo Salvucci, Jr., MD, FACEP, is an emergency physician and medical director for the Santa Barbara County and Ventura County (CA) EMS agencies.

Firefighters trained with the local hospital in a drill involving a chemical spill, practicing a decontamination process and setting up a mass casualty tent for patient treatment.
The simulations involved having the medics crawl into tight spaces and practice intubation on patients who are difficult to reach.
Register for this year's Pediatric EMS Conference to improve your ability to provide care to young patients and receive continuing education credits.
How virtual reality can enhance first responders’ critical incident response skills
Fire, rescue, and police personnel practiced responding to tornado disasters and chemical spills.
The online program is designed to better equip first responders, law enforcement, social workers, drug counselors and others directly involved with dealing with the opioid crisis.
EMS challenges us all in countless ways every day. Similarly, as an EMT student, you will be faced with quizzes and exams of different types throughout your EMS education. Knowing and using the tools you have in your toolkit will prepare you for all of them.
The camp will show girls ages 8 through 16 what it's like to be in the fire service, training them in CPR, using fire equipment, and taking a trip to the Emergency Operations Center.
The program first trains students to become certified EMTs and then progresses to paramedic training.

Register now for the May 8 PCRF Journal Club podcast, which features special guest Dr. Seth A. Brown who, with his co-authors, recently published a qualitative study examining ways to improve pediatric EMS education.

The exercise tested multiple agencies in their ability to handle a scenario involving hazardous substances.
Sponsored by the EMS Council of New Jersey, over 100 youth from 16 New Jersey and New York volunteer emergency medical organizations competed in the June 10 Bayshore EMS Cadet/Youth Competition.

Which proved to be fastest for providers wearing Level C protective gear?

Reviewed this Month

Airway Management in Disaster Response: A Manikin Study Comparing Direct and Video Laryngoscopy for Endotracheal Intubation by Prehospital Providers in Level C Personal Protective Equipment.

Authors: Yousif S, Machan JT, Alaska Y, Suner S. 
Published in: Prehosp Disaster Med, 2017
Mar 20; 32(4): 1–5.

In an effort to counter active shooters in schools, teachers and administrators with concealed carry permits receive firearms training.

Can new technology improve the performance of disconnected remote learners?

Each month the Prehospital Care Research Forum combs the literature to identify recent studies relevant to EMS education practices. In this segment PCRF board member Megan Corry shares her insight on research that can help bring evidence-based practices to EMS education.