First Aid / CPR / AED (US) practice questions and answers 2026. Tap an option to test yourself — you'll see the correct answer and a plain-English explanation for every question. Free, no login.
Q21In a mass-casualty incident using START triage, a victim who is breathing at 32 breaths/min and has a radial pulse is tagged:
✓ Correct answer: C. Red (immediate)
START triage tags RED/immediate for respirations >30/min, absent radial pulse, or altered mental status — this patient's respiratory rate of 32 meets the RED criterion.
Topic: Emergency Response & Action Steps
Q22A rescuer suspects a gas leak in a building where a victim collapsed. The BEST action is to:
✓ Correct answer: B. Call 911 and wait for trained responders to make the scene safe
Scene safety is paramount; a gas leak is an immediately dangerous to life and health (IDLH) hazard. Rescuers should not enter and should activate 911 for specialized responders.
Topic: Emergency Response & Action Steps
Q23Which vital sign is considered the MOST sensitive early indicator of shock?
✓ Correct answer: C. Heart rate
Heart rate rises early in compensated shock before blood pressure drops, making tachycardia the most sensitive early vital sign indicator of hypovolemia or shock.
Topic: Emergency Response & Action Steps
Q24Expressed consent requires that a patient:
✓ Correct answer: B. Verbally or physically agree to treatment after being informed
Expressed (informed) consent means the competent, conscious adult has been told what the rescuer intends to do and has verbally or physically agreed to receive care.
Topic: Emergency Response & Action Steps
Q25During a secondary survey, DCAP-BTLS is used to assess:
✓ Correct answer: D. Head-to-toe physical findings on the body surface
DCAP-BTLS (Deformities, Contusions, Abrasions, Punctures, Burns, Tenderness, Lacerations, Swelling) is a systematic head-to-toe physical exam framework used in the secondary survey.
Topic: Emergency Response & Action Steps
Q26A responsive adult refuses emergency care despite signs of a serious condition. The rescuer should:
✓ Correct answer: C. Document the refusal, inform the patient of risks, and do not force treatment
A competent adult has the legal right to refuse care; the rescuer should document the refusal, clearly explain the risks of declining treatment, and respect the decision while continuing to offer help.
Topic: Emergency Response & Action Steps
Q27Which of the following best defines 'duty to act' in a first aid context?
✓ Correct answer: D. A trained rescuer's legal or professional obligation to respond
Duty to act applies to individuals with a professional or contractual obligation (e.g., lifeguards, EMTs on duty) to provide care; it does not generally apply to untrained bystanders.
Topic: Emergency Response & Action Steps
Q28A normal respiratory rate for a resting adult is:
✓ Correct answer: A. 12-20 breaths per minute
A resting adult respiratory rate of 12-20 breaths per minute is considered normal; rates outside this range may indicate respiratory distress or altered physiology.
Topic: Emergency Response & Action Steps
Q29In START triage, a non-breathing adult victim who does not breathe after one airway repositioning attempt is tagged:
✓ Correct answer: D. Black
In START triage, apneic adults who do not breathe after a single attempt to open the airway are tagged BLACK (expectant/deceased) because resources are directed to savable patients.
Topic: Emergency Response & Action Steps
Q30Which action BEST reduces the bystander effect at an emergency scene?
✓ Correct answer: A. Making direct eye contact with one person and assigning them a specific task
Direct assignment — pointing at one person and saying 'You in the red shirt, call 911 now' — overcomes diffusion of responsibility by creating personal accountability.
Topic: Emergency Response & Action Steps
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