BLS Practice Test: Video 3 Answers (25 Questions) Flashcards

A rescuer says 'I've given 1 mg epinephrine at 10:14' after administering the drug. This is an example of:

Answer: Closed-loop communication confirming task completion

Reporting back the action taken and the time completes the closed-loop cycle and keeps all team members informed.

When should a team member intervene if they believe the team leader is making an incorrect decision?

Answer: Immediately, using assertive but respectful communication

Any team member who identifies a potential error should speak up immediately; patient safety supersedes hierarchy.

What should a team member do if unsure about a task they were assigned?

Answer: Ask the team leader for clarification

If a team member is unsure about an assigned task, it is crucial to seek clarification immediately from the team leader. Performing a task incorrectly due to uncertainty can jeopardize patient safety and disrupt the resuscitation effort. Asking for clarification ensures the task is understood and executed correctly, maintaining team efficiency and patient care standards.

What role does the team leader play during a resuscitation attempt?

Answer: Directs and assigns tasks

The team leader plays a crucial role in directing the resuscitation attempt by assigning specific tasks to team members, ensuring all necessary interventions are performed, and monitoring the overall progress. They maintain situational awareness, make critical decisions, and facilitate effective communication. This leadership allows the team to function cohesively and efficiently, maximizing the chances of a successful outcome.

Which behavior supports effective team performance?

Answer: Team members communicate roles clearly

Effective team performance in BLS relies heavily on clear role assignments and communication among members. When roles are clearly defined and communicated, it prevents duplication of effort, ensures all necessary tasks are covered, and promotes efficient coordination. This clarity allows the team to function smoothly, reducing chaos and improving the quality of care delivered.

During a cardiac arrest, every minute without defibrillation for a shockable rhythm decreases survival by approximately how much?

Answer: 7–10%

Survival from ventricular fibrillation decreases by approximately 7–10% for every minute that defibrillation is delayed without CPR.

What can improve the effectiveness of the Chain of Survival?

Answer: Better CPR training for the public

The early links of the Chain of Survival, such as recognition, activation, and early CPR, are often performed by bystanders. Widespread and effective CPR training for the public empowers more people to act quickly and correctly in an emergency. This significantly improves the chances of survival by ensuring critical interventions are started without delay, bridging the gap until professional help arrives.

Which of the following actions is LEAST consistent with strengthening the 'rapid defibrillation' link?

Answer: Storing AEDs in locked back rooms to prevent tampering

AEDs stored in inaccessible locations cannot be retrieved quickly, undermining the rapid defibrillation link.

A patient achieves return of spontaneous circulation (ROSC) after CPR and defibrillation. Which Chain of Survival link is now the priority?

Answer: Post-cardiac arrest care

Post-cardiac arrest care, including targeted temperature management and hemodynamic support, begins after ROSC is achieved.

In communities with strong Chain of Survival programs, survival rates from out-of-hospital cardiac arrest can reach:

Answer: 40–50%

Communities with robust bystander CPR, AED programs, and post-arrest care have demonstrated survival rates approaching 40–50% for shockable rhythms.

When assessing breathing, how long should you take to determine if breathing is absent or abnormal?

Answer: No more than 10 seconds

AHA guidelines state breathing should be assessed simultaneously with pulse check in under 10 seconds to minimize delay.

When using a pocket mask for rescue breathing, where should you position yourself relative to the patient?

Answer: At the patient's side near the head

Positioning at the patient's side near the head allows proper mask seal and head-tilt with one or two hands.

A 4-year-old child is in respiratory arrest with a pulse. What rescue-breathing rate should you use?

Answer: 1 breath every 2–3 seconds (20–30/min)

For infants and children with a pulse, AHA recommends 1 breath every 2–3 seconds (20–30 breaths/min).

During two-rescuer BLS for an adult in cardiac arrest, how often should rescue breaths be given?

Answer: 2 breaths after every 30 compressions

The 30:2 compression-to-ventilation ratio applies to adult BLS regardless of rescuer count.

Which of the following is the MOST reliable indicator that rescue breaths are effective during BLS?

Answer: Visible chest rise with each breath

Visible chest rise confirms air is entering the lungs rather than the stomach or leaking around the mask.

In an unresponsive adult patient with no suspected spinal injury, which maneuver is preferred to open the airway?

Answer: Head-tilt chin-lift

The head-tilt chin-lift is the preferred airway maneuver for unresponsive patients without suspected spinal injury.

How often should rescue breaths be delivered during CPR with an advanced airway?

Answer: Every 6 seconds

When an advanced airway (like an endotracheal tube or supraglottic airway) is in place during CPR, rescue breaths should be delivered asynchronously with chest compressions. The recommended rate is one breath every 6 seconds (10 breaths per minute). This allows for continuous chest compressions without interruption, optimizing blood flow while still providing adequate oxygenation.

A bag-mask device should deliver approximately how much air volume per breath to an adult?

Answer: 400–600 mL

Each breath should deliver approximately 500–600 mL (roughly 400–600 mL range), enough to produce visible chest rise without causing gastric inflation.

What is the most important consideration when using a bag-valve-mask?

Answer: Proper seal on the face

The most important consideration when using a bag-valve-mask (BVM) is achieving and maintaining a proper seal on the patient's face. A tight seal prevents air leakage, ensuring that the delivered breaths effectively enter the lungs and provide adequate ventilation. Without a good seal, breaths will be ineffective, regardless of other factors.

A suspected spinal injury victim is unresponsive and not breathing. What airway technique should be used?

Answer: Jaw thrust without head tilt

The jaw thrust without head tilt is used for suspected spinal injury patients to open the airway while minimizing cervical spine movement.