BLS (BASIC LIFE SUPPORT) – PRACTICE QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
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CORE DOMAINS
• High-Quality CPR for Adults, Children, and Infants
• The AHA Chain of Survival
• Use of an Automated External Defibrillator (AED)
• Effective Team Dynamics and Multirescuer Resuscitation
• Management of Foreign-Body Airway Obstruction (Choking)
• Rescue Breathing and Bag-Mask Ventilation
• Opioid-Associated Life-Threatening Emergencies
• Post-Cardiac Arrest Care Fundamentals
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the competency and
readiness of healthcare professionals and responders in performing Basic Life
Support (BLS). This exam assesses critical skills, including high-quality chest
compressions, proper ventilation techniques, and the integration of an AED within the
,clinical and pre-hospital environment. Through a combination of foundational
multiple-choice questions and complex, scenario-based inquiries, candidates must
demonstrate their ability to apply theoretical knowledge to real-world medical
emergencies. The exam emphasizes rapid decision-making, clinical accuracy, and
the ethical responsibility of the rescuer, ensuring that practitioners are prepared to
improve survival outcomes through evidence-based intervention.
SECTION ONE: QUESTIONS 1–100
1. What is the recommended depth of chest compressions for an adult victim?
A. At least 1 inch
🟢 B. At least 2 inches
C. At least 3 inches
D. Exactly 1.5 inches
🔴 RATIONALE: To be effective, adult chest compressions must reach a depth of at
least 2 inches (5 cm) but should not exceed 2.4 inches (6 cm) to allow for adequate
blood flow while minimizing injury.
2. A 55-year-old male collapses. You find him unresponsive and not breathing.
What is your next immediate action?
,🟢 A. Activate the emergency response system and get the AED
B. Check for a pulse for at least 20 seconds
C. Perform 5 cycles of CPR before calling for help
D. Provide two rescue breaths
🔴 RATIONALE: In an unresponsive adult who is not breathing, the first step is to
activate the emergency response system and obtain an AED to ensure advanced
help and equipment are on the way.
3. When performing high-quality CPR on an adult, what is the recommended rate
of compressions per minute?
A. 60 to 80
B. 80 to 100
🟢 C. 100 to 120
D. 120 to 150
🔴 RATIONALE: The AHA guidelines recommend a compression rate of 100 to 120
compressions per minute for all victims of cardiac arrest to maintain optimal coronary
perfusion pressure.
, 4. You are performing CPR alone on an infant. What is the correct compression-to-
ventilation ratio?
A. 15:2
🟢 B. 30:2
C. 5:1
D. 15:1
🔴 RATIONALE: For a single rescuer performing CPR on an infant or child, the
universal ratio of 30 compressions to 2 breaths is used. The ratio changes to 15:2
only when two rescuers are present.
5. Why is it important to allow for full chest recoil between compressions?
A. It prevents the rescuer from getting tired
B. It increases the rate of compressions
🟢 C. It allows blood to flow into the heart
D. It reduces the risk of rib fractures
🔴 RATIONALE: Full chest recoil allows the heart to refill completely with blood
between compressions, which is necessary for the next compression to be effective
in circulating blood.
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF.
CORE DOMAINS
• High-Quality CPR for Adults, Children, and Infants
• The AHA Chain of Survival
• Use of an Automated External Defibrillator (AED)
• Effective Team Dynamics and Multirescuer Resuscitation
• Management of Foreign-Body Airway Obstruction (Choking)
• Rescue Breathing and Bag-Mask Ventilation
• Opioid-Associated Life-Threatening Emergencies
• Post-Cardiac Arrest Care Fundamentals
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the competency and
readiness of healthcare professionals and responders in performing Basic Life
Support (BLS). This exam assesses critical skills, including high-quality chest
compressions, proper ventilation techniques, and the integration of an AED within the
,clinical and pre-hospital environment. Through a combination of foundational
multiple-choice questions and complex, scenario-based inquiries, candidates must
demonstrate their ability to apply theoretical knowledge to real-world medical
emergencies. The exam emphasizes rapid decision-making, clinical accuracy, and
the ethical responsibility of the rescuer, ensuring that practitioners are prepared to
improve survival outcomes through evidence-based intervention.
SECTION ONE: QUESTIONS 1–100
1. What is the recommended depth of chest compressions for an adult victim?
A. At least 1 inch
🟢 B. At least 2 inches
C. At least 3 inches
D. Exactly 1.5 inches
🔴 RATIONALE: To be effective, adult chest compressions must reach a depth of at
least 2 inches (5 cm) but should not exceed 2.4 inches (6 cm) to allow for adequate
blood flow while minimizing injury.
2. A 55-year-old male collapses. You find him unresponsive and not breathing.
What is your next immediate action?
,🟢 A. Activate the emergency response system and get the AED
B. Check for a pulse for at least 20 seconds
C. Perform 5 cycles of CPR before calling for help
D. Provide two rescue breaths
🔴 RATIONALE: In an unresponsive adult who is not breathing, the first step is to
activate the emergency response system and obtain an AED to ensure advanced
help and equipment are on the way.
3. When performing high-quality CPR on an adult, what is the recommended rate
of compressions per minute?
A. 60 to 80
B. 80 to 100
🟢 C. 100 to 120
D. 120 to 150
🔴 RATIONALE: The AHA guidelines recommend a compression rate of 100 to 120
compressions per minute for all victims of cardiac arrest to maintain optimal coronary
perfusion pressure.
, 4. You are performing CPR alone on an infant. What is the correct compression-to-
ventilation ratio?
A. 15:2
🟢 B. 30:2
C. 5:1
D. 15:1
🔴 RATIONALE: For a single rescuer performing CPR on an infant or child, the
universal ratio of 30 compressions to 2 breaths is used. The ratio changes to 15:2
only when two rescuers are present.
5. Why is it important to allow for full chest recoil between compressions?
A. It prevents the rescuer from getting tired
B. It increases the rate of compressions
🟢 C. It allows blood to flow into the heart
D. It reduces the risk of rib fractures
🔴 RATIONALE: Full chest recoil allows the heart to refill completely with blood
between compressions, which is necessary for the next compression to be effective
in circulating blood.
