BASIC LIFE SUPPORT EXAM A AND B QUESTIONS AND VERIFIED ANSWERS

Basic Life Support Exam A and B: Questions and Verified Answers

Basic Life Support (BLS) is a critical skill set designed to sustain life in emergencies, particularly those involving cardiac and respiratory arrest. The American Heart Association (AHA) provides standardized examinations, commonly referred to as Exam A and Exam B, to assess proficiency in BLS protocols. These exams consist of multiple-choice questions that evaluate knowledge and application of BLS procedures.

Understanding the Structure of BLS Exams

Each BLS exam typically comprises 25 questions, focusing on various aspects of emergency cardiovascular care, including:

• Chest Compressions and Ventilations: Techniques for performing high-quality CPR.
• Use of Automated External Defibrillators (AEDs): Proper application and operation.
• Airway Management: Methods for ensuring a clear airway.
• Team Dynamics: Effective communication and role assignment during resuscitation efforts.

Sample Questions and Verified Answers

1. What is the recommended compression-to-ventilation ratio for 1-rescuer adult CPR?

   A. 15:2

   B. 30:2

   C. 30:1

   D. 15:1

   Correct Answer: B. 30:2

   Rationale: For adult CPR, the standard ratio is 30 chest compressions to 2 rescue breaths. This ratio is recommended to maintain adequate circulation and oxygenation during resuscitation efforts.

2. When using an AED on a person who has been submerged in water, what is the first step?

   A. Apply the pads to the patient's chest.

   B. Clear the patient.

   C. Turn on the AED.

   D. Press the shock button.

   Correct Answer: C. Turn on the AED.

   Rationale: The initial step is to power on the AED. Once activated, follow the device's prompts, which may include pulling the person out of the water and drying the chest before applying the pads.

3. What is the depth of chest compressions recommended for infants during CPR?

   A. At least one-third the depth of the chest, approximately 1.5 inches (4 cm)

   B. At least one-half the depth of the chest, approximately 2 inches (5 cm)

   C. At least one-third the depth of the chest, approximately 2 inches (5 cm)

   D. At least one-half the depth of the chest, approximately 1.5 inches (4 cm)

   Correct Answer: A. At least one-third the depth of the chest, approximately 1.5 inches (4 cm)

   Rationale: For infants, chest compressions should be at least one-third the depth of the chest, which is approximately 1.5 inches (4 cm). This depth ensures adequate circulation during CPR.

4. Why is allowing complete chest recoil important when performing high-quality CPR?

   A. It reduces the risk of rib fractures.

   B. It allows the heart to refill with blood between compressions.

   C. It increases the rate of chest compressions.

   D. It prevents gastric distention.

   Correct Answer: B. It allows the heart to refill with blood between compressions.

   Rationale: Allowing the chest to fully recoil between compressions enables the heart to refill with blood, optimizing the effectiveness of each compression.

5. What is the first action to take when you encounter an unresponsive adult who is not breathing and has no pulse?

   A. Begin CPR, starting with chest compressions.

   B. Open the airway and give 2 rescue breaths.

   C. Check for a pulse for no more than 10 seconds.

   D. Activate the emergency response system and get an AED.

   Correct Answer: D. Activate the emergency response system and get an AED.

   Rationale: The first step is to activate the emergency response system and retrieve an AED. If alone, perform CPR for 2 minutes before calling emergency services.

Accessing BLS Exam Resources

For comprehensive preparation, various resources are available:

• Official AHA Materials: The American Heart Association offers official BLS provider manuals and practice exams. These materials provide accurate and up-to-date information aligned with current guidelines.

• Online Practice Tests: Websites like eMedCert provide practice exams with questions and answers to help reinforce learning.

  eMedCert

• Flashcards: Platforms such as Quizlet offer flashcards for BLS exam preparation, allowing for interactive learning.

  Quizlet

Conclusion

Mastering the content of the Basic Life Support Exam A and B is essential for healthcare professionals and laypersons alike. Utilizing verified resources and engaging in regular practice can enhance proficiency and confidence in delivering life-saving interventions. Remember, the efficacy of BLS is not solely dependent on knowledge but also on the ability to perform under pressure.

Below are sample Questions and Answers:

While performing high-quality CPR on an adult, what action should you
ensure is being accomplished - ANSWER- Compressing to depth of at
least 2 inches
A 53-year-old woman collapses while gardening. She is unresponsive, is
not breathing, and does not
have a pulse. A neighbor, who is an emergency medical technician,
rushes to her with an AED.
- When the AED arrives, what is the first step for using it? - ANSWERTurn on the AED
After the AED pads are attached to the victim's bare chest, the AED
detects ventricular fibrillation.
What is the next step when using an AED? - ANSWER- Follow the AED
prompts