A high-performance BLS team divides CPR responsibilities among providers so that chest compressions, ventilation, and cardiac monitoring are performed together in a coordinated response. The resuscitation triangle represents the three core positions at the center of this approach.
Understanding each position helps clarify who performs chest compressions, who manages the airway, and who operates the monitor or defibrillator. Additional providers can take on leadership, medication, and documentation responsibilities when the resuscitation team is larger.
This guide explains the roles of the resuscitation triangle, how they work together during BLS, the additional roles in a larger team, closed-loop communication, and how the triangle fits into ACLS.
What Is the Resuscitation Triangle in BLS?
The resuscitation triangle in BLS is a team structure that organizes three essential positions during a resuscitation effort. The three positions are the Compressor, Airway, and Monitor/Defibrillator/CPR Coach. Each role has a defined responsibility during the resuscitation.
The table below provides a quick overview of these three BLS roles.
| BLS Role | Main Responsibility |
| Compressor | Performs chest compressions |
| Airway | Maintains the airway and provides ventilation |
| Monitor/Defibrillator/CPR Coach | Operates the monitor or defibrillator and provides CPR feedback |
Together, these roles help the team maintain coordinated CPR and respond to changes in the patient’s condition.
What Is the Role of the Compressor in the Resuscitation Triangle?
The compressor performs high-quality chest compressions throughout the resuscitation. For adults and children, compressions should be performed at a rate of 100 to 120 per minute and to a depth of at least 2 inches (5 cm). For infants, compressions should be performed at a rate of 100 to 120 per minute and to a depth of about 1.5 inches (4 cm). Allow the chest to fully recoil after each compression and minimize interruptions in chest compressions.
This role also involves monitoring compression quality and communicating with the team when a pause or change in responsibility is needed. If fatigue begins to affect performance, another qualified provider should take over, with compressors generally rotating about every 2 minutes or sooner when needed.
What Is the Role of the Airway Provider in the Resuscitation Triangle?
The airway provider maintains an open airway and provides ventilation during resuscitation. The role includes opening the airway, providing bag-mask ventilation, and using an appropriate airway adjunct when indicated. The provider must also ensure that breaths are delivered effectively while maintaining proper airway positioning throughout the resuscitation effort.
During CPR, the airway provider coordinates ventilation with the compressor so that breaths are provided at the appropriate time without unnecessary interruptions in chest compressions. The provider also communicates with the team about ventilation, airway positioning, and any difficulty maintaining the airway. Keeping this position focused on airway management allows the compressor to concentrate on delivering high-quality chest compressions.
What Is the Role of the Monitor/Defibrillator/CPR Coach in the Resuscitation Triangle?
The monitor/defibrillator/CPR coach provider brings and operates the AED, monitor, or defibrillator during resuscitation. The monitor should be positioned so the team leader and other team members can easily see the patient’s heart rhythm and the information displayed on the screen. This provider may also rotate into another team position when needed to maintain effective team performance and support continuous CPR.
When assigned as the CPR coach, the provider observes CPR performance and gives specific feedback to improve its quality. This may include feedback on compression rate, depth, recoil, ventilation, and interruptions. The CPR coach communicates these observations to the compressor and team leader so they can identify and correct problems with CPR performance.
How Do the Three Resuscitation Triangle Roles Work Together?
The three resuscitation triangle roles work together to maintain high-quality CPR throughout the resuscitation. The compressor performs chest compressions, the airway provider manages the airway and provides ventilation, and the monitor, defibrillator, or CPR coach operates the AED or defibrillator and provides CPR feedback when assigned.
Clear communication helps these three roles coordinate their responsibilities. Team members should communicate when a task is completed, when they need a pause, or when another provider needs to take over a responsibility. This coordination allows each provider to focus on their assigned role while supporting the overall resuscitation effort.
What is the Main Goal of a high-performance BLS Resuscitation Team?
A high-performance BLS resuscitation team focuses on providing high-quality CPR while coordinating the actions needed during cardiac arrest. Each team member has a defined responsibility, allowing providers to focus on their assigned tasks while working toward the same patient care goals.
The main goals include:
- Maintain high-quality CPR: Deliver effective chest compressions, provide appropriate ventilation, and minimize interruptions.
- Coordinate BLS roles: Keep the compressor, airway provider, monitor, defibrillator, and CPR coach focused on their assigned responsibilities.
- Communicate clearly: Use direct communication so team members understand instructions and report when tasks are completed.
- Coordinate AED use: Ensure the AED or defibrillator is operated safely and used when indicated.
- Monitor CPR quality: Observe compression and ventilation performance and provide feedback when corrections are needed.
- Respond to changes: Recognize changes in the patient’s condition and adjust the BLS response as needed.
- Work as a coordinated team: Allow the team leader to oversee the resuscitation while other providers carry out their assigned responsibilities.
How Does Closed-Loop Communication Help During BLS Resuscitation?
Closed-loop communication helps a BLS resuscitation team make sure instructions are received and understood. When the team leader gives an instruction, the team member confirms it, performs the task, and reports back when finished.
For example, the team leader may ask the airway provider to give two breaths. The airway provider confirms the instruction, provides the breaths, and reports back that the task is complete.
This communication also allows BLS team members to report problems, completed tasks, or changes in responsibility. Clear closed-loop communication helps the team understand instructions, confirm completed tasks, and stay aware of ongoing actions during CPR and resuscitation.
What Other Roles Are Included in a High-Performance BLS Resuscitation Team?
The three positions in the resuscitation triangle cover the core BLS CPR functions. A larger high-performance BLS team can include additional providers who manage responsibilities outside those three positions.
The American Heart Association identifies the Team Leader, IV, IO, Medications, and Timer/Recorder as additional roles in its six-person high-performance team model.
What Does the Team Leader Do?
The team leader oversees the resuscitation effort and assigns responsibilities to team members. The leader makes treatment decisions, coordinates team activities, and monitors the overall response.
Furthermore, if a team member has not been assigned a role, the team leader takes on that role.
What Does the IV/IO/Medications Provider Do?
The IV/IO/medications provider manages vascular access and administers medications when needed during resuscitation. This role may involve establishing IV or IO access and administering medications as required during resuscitation.
Unlike the three core BLS triangle positions, this is an additional role in the AHA six-person high-performance team model. The provider works with the team leader and other members to ensure vascular access and medication needs are addressed without interfering with ongoing CPR.
What Does the Timer/Recorder Do?
The Timer/Recorder tracks and documents important events throughout the resuscitation. This includes recording when interventions and medications are given, noting interruptions in chest compressions, and documenting resuscitation events.
The Timer/Recorder also announces when the next intervention or medication is due and communicates this information to the team leader and other team members. This helps the team coordinate interventions and maintain accurate timing throughout the resuscitation.
How Does the Resuscitation Triangle Fit Into ACLS?
The resuscitation triangle provides the core structure for CPR within a larger ACLS team. The three core positions, the compressor, airway provider, and monitor, defibrillator, or CPR coach, handle the main CPR tasks. Other team members can take responsibility for additional tasks, such as giving medications, establishing vascular access, managing the advanced airway, interpreting the cardiac rhythm, and recording events.
The size of the ACLS team and the responsibilities assigned to each member depend on the patient’s needs and the available resources. As the team grows, additional providers can handle these specialized tasks while the three core positions continue to manage their CPR responsibilities.
Strengthen Your BLS Resuscitation Skills
Understanding the resuscitation triangle helps BLS providers recognize how CPR responsibilities are divided during a cardiac arrest. The compressor, airway provider, and monitor/defibrillator/CPR coach each have a specific function, while larger teams may add roles such as team leader, IV/IO and medications provider, and timer/recorder.
Bayside CPR offers BLS certification and renewal courses with flexible training options to fit different schedules and learning needs. You can practice essential CPR skills and AED use while learning how to perform your assigned resuscitation role and work effectively with the rest of the team. Same-day certification is available upon successful completion, with credentials accepted across the United States.
