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June 30, 2015
Benefits of applying CRM to cardiac arrest resuscitation
Historically, emergency training for EMS personnel primarily focused on individual acquisition and mastering of discrete technical skills. These include basic and advanced airway management techniques, CPR, IV access and medication administration. Educators and even system administrators often did not focus on the behavioral and communication skills necessary for medical personnel to effectively provide emergency care in the realities of a dynamic team-based environment.
While courses such as International Trauma Life Support (ITLS) or Advanced Cardiac Life Support (ACLS) mention the importance of teamwork, the primary value of these courses is in ensuring each attendee has attained baseline knowledge about a specific critical event. In fact, direct observation of team performance under actual clinical conditions suggests these courses do little to prepare an individual for a leadership role within the team.
Poor leadership leads to poor outcomes
Often the major obstacles to effective management of cardiac arrest are not lack of knowledge about the treatment algorithms but rather poor leadership and the lack of explicit task distribution during the resuscitation attempt. An emergency department evaluation of a trauma team found the presence of clear leadership led to improved treatment guideline adherence and earlier development of a definitive treatment plan.
Effective teamwork does not automatically happen simply because a group of emergency responders arrive on the scene of a medical emergency. “Outer-loop,” or non-team-leader-initiated communication is common during a resuscitation attempt and has the potential to be distracting for the team leader as well as other non-participating members. Successful teams are composed of responders who understand the roles and responsibilities of every other member. These teams are trained to cooperate and reduce conflict.
Airlines and EMS
Recently, experts have turned to a concept known as crew resource management (CRM) to address the non-technical skills necessary for critical care teamwork. These non-technical skills include communication, teamwork, and leadership. CRM originates from attempts in the late 1970s to make air travel safer. Reports from the time found dangerous flying conditions often resulted from communication or social skill failures of the flight crew rather than a lack of technical knowledge. Unfortunately, these failures in many cases resulted in the loss of lives.
Simulation helps build teamwork
One component of crew resource management training is the use of simulation. Through even simple and inexpensive forms of simulation, educators and training officers can recreate many of the conditions that may have interfered with a rescue team’s ability to effectively manage a critical event. Arguably, the greatest value of simulation in resuscitation training lies in the repeated exposure of the rescue team to those conditions in a safe environment until the team can perfect an action, a procedure or a conversation.
Following the simulation exercise, the rescue team must engage in a debriefing session during which each team member has the opportunity to critically examine every aspect of the exercise and learn where errors occurred. Team members can then suggest solutions to prevent the breakdown from occurring again. Without debriefing, simulation is generally ineffective as team members are not aware of their mistakes and may continue to perform the same incorrect actions or continue to engage in ineffective communication patterns.
Simulation exercises and targeted resuscitation training translate into improvements in clinical performance. A case-controlled study of in-hospital cardiac arrest found internal medicine residents trained on a human patient simulator showed significantly higher adherence toACLS standards than residents trained without the simulator. Cardiac arrest teams receiving pit-crew resuscitation training significantly reduced the no-flow rate during the first 10 minutes of the resuscitation attempt in the emergency department. Although not sufficiently powered to detect a change, the reduction in no-flow rate trended toward improved survival outcomes.
Improved outcomes through pit-crew training
EMS agencies implementing pit-crew resuscitation training report doubling survival rates over historical controls. Other systems report higher neurologically intact survival rates compared to the national average after implementing a system-tailored pit crew resuscitation model.
Tailored pit crew training provides an opportunity for many EMS systems to improve survival following out-of-hospital cardiac arrest. This type of training integrates evidence-based medicine with crew resource management principles to improve team dynamics and patient care delivery.
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