BLS Practice Test: Video 1 Answers (25 Questions) Flashcards

Which behavior MOST disrupts effective team dynamics during cardiac arrest?

Answer: Multiple team members giving simultaneous orders

Multiple simultaneous orders create confusion, divide attention, and undermine the team leader's authority, leading to errors.

Which statement best describes effective team communication during BLS?

Answer: Use clear, concise, and direct verbal commands

Effective team communication during BLS requires clarity and directness to ensure rapid and accurate execution of tasks. Using clear, concise, and direct verbal commands minimizes misunderstandings and allows team members to quickly understand and act upon instructions. This streamlined communication is vital for efficient resuscitation efforts and improving patient survival.

During a code, the team leader gives an order but no one responds. What should the leader do NEXT?

Answer: Direct the order to a specific team member by name

Directing orders to a named individual ensures clear accountability and avoids the 'bystander effect' where everyone assumes someone else will act.

What is the most critical factor in effective team-based BLS?

Answer: Clear communication among team members

In team-based BLS, clear communication is paramount for effective resuscitation. It ensures that tasks are assigned efficiently, roles are understood, and interventions are coordinated without delay or duplication. Effective communication minimizes errors, optimizes performance, and ultimately improves patient outcomes by creating a cohesive and well-organized response.

What is the PRIMARY purpose of assigning roles BEFORE beginning CPR when multiple rescuers are present?

Answer: To ensure each task is covered without duplication or gaps

Pre-assigning roles prevents task overlap and ensures critical functions like compressions, airway, and timing are all covered simultaneously.

Which of the following is a non-shockable cardiac arrest rhythm?

Answer: Pulseless electrical activity (PEA)

PEA and asystole are non-shockable rhythms; treatment focuses on CPR and identifying reversible causes.

During cardiac arrest, which heart rhythm is most commonly associated with sudden cardiac arrest in adults?

Answer: Ventricular fibrillation (VF)

Ventricular fibrillation is the most common initial rhythm in sudden cardiac arrest in adults and is shockable.

How soon after applying an AED should you analyze the rhythm if the device is ready?

Answer: Immediately upon attachment, pausing CPR only for analysis

Once the AED is attached, pause CPR only during rhythm analysis and shock delivery, then resume compressions immediately.

A rescuer is performing high-quality CPR on an adult. Which finding indicates compressions are adequate?

Answer: Chest recoils fully between compressions

Full chest recoil between compressions allows the heart to refill with blood, which is a key indicator of high-quality CPR.

Chest compressions should be used as the first step in CPR if you DON'T DEFINITELY feel a pulse in the first ______ seconds.

Answer: 10

According to BLS guidelines, a pulse check should not take longer than 10 seconds. If you do not definitely feel a pulse within this 10-second window, or if you are unsure, you should immediately begin chest compressions. Prompt initiation of CPR is vital for maintaining blood flow to the brain and other vital organs.

Who plays a role in the first link of the Chain of Survival?

Answer: Bystanders

The first link of the Chain of Survival, 'Recognition and activation of emergency response,' primarily relies on bystanders. They are the first people on the scene to recognize that someone has collapsed and is in cardiac arrest. Their quick action in calling for help and initiating CPR is critical for the victim's survival, as every minute counts.

Which component focuses on stabilization and transport to definitive care?

Answer: Advanced life support

Advanced Life Support (ALS) is the link in the Chain of Survival that involves highly trained medical professionals, such as paramedics, providing advanced interventions. This includes administering medications, advanced airway management, and stabilizing the patient for transport to a hospital. The goal is to provide comprehensive care and prepare the patient for definitive treatment.

Which link comes immediately after early CPR in the Chain of Survival?

Answer: Rapid defibrillation

In the adult Chain of Survival, rapid defibrillation immediately follows early CPR. While CPR circulates oxygenated blood to the brain and heart, it cannot correct the underlying electrical problem, such as ventricular fibrillation. Defibrillation is the definitive treatment to restore a normal heart rhythm, making its rapid application critical after CPR has been initiated.

Why is early CPR important in the Chain of Survival?

Answer: It delays brain death

When the heart stops, blood flow to the brain ceases, and brain cells begin to die within minutes due to lack of oxygen. Early CPR, particularly chest compressions, circulates oxygenated blood to the brain and other vital organs. This delays brain death and keeps the heart muscle viable until defibrillation or advanced medical care can restore a normal heart rhythm.

How many links are in the adult Chain of Survival?

Answer: Five

The adult Chain of Survival, as defined by organizations like the American Heart Association, consists of five critical links. These are: 1) Recognition and activation of emergency response, 2) Early CPR, 3) Rapid defibrillation, 4) Advanced life support, and 5) Post-cardiac arrest care. Each link is vital for improving outcomes and represents a sequential step in effective cardiac arrest management.

Which technique is used to provide breaths using a bag-valve-mask (BVM)?

Answer: E-C clamp technique

The E-C clamp technique is the standard method for holding a bag-valve-mask (BVM) to a patient's face while providing breaths. This technique involves using the thumb and index finger to form a 'C' shape around the mask for a tight seal, while the remaining three fingers form an 'E' shape to lift the jaw and maintain an open airway. This ensures effective ventilation and minimizes air leakage.

What is the most common method used to open the airway of an unresponsive victim without suspected spinal injury?

Answer: Head tilt–chin lift

The head tilt–chin lift maneuver is the primary and most common technique used to open the airway of an unresponsive victim when there is no suspected spinal injury. This method effectively moves the tongue away from the back of the throat, which is a frequent cause of airway obstruction in unconscious individuals. It creates a clear passage for breathing.

During two-rescuer CPR, when should the rescuer delivering ventilations switch to compressor?

Answer: Every 5 cycles (about 2 minutes)

Rescuers should switch roles approximately every 2 minutes (5 cycles of 30:2) to prevent compressor fatigue and maintain high-quality compressions.

When performing a head-tilt chin-lift on an adult, where should you place your fingers to lift the chin?

Answer: On the bony part of the lower jaw

Fingers should be placed on the bony part of the lower jaw to lift the chin without compressing the soft tissue, which could obstruct the airway.

What is the correct compression-to-ventilation ratio for a single rescuer performing adult CPR?

Answer: 30:2

For adult CPR with one or two rescuers, the recommended compression-to-ventilation ratio is 30:2.