First Aid and CPR Practice Test (US) 2026: Test de práctica 2

Test de práctica 2 de 5 de First Aid and CPR Practice Test (US): 25 preguntas más con respuestas y explicaciones.

Primeros auxilios
Estados Unidos
120 preguntas
Revisado el 10 de octubre de 2026

Pregunta 1 de 25
You are giving CPR to a person with obesity. What do the 2025 AHA guidelines say?
- Push on the belly instead of the chest to avoid the ribs
- Give rescue breaths only, because compressions will not work
- Use gentler, shallower compressions than for other adults
- Use standard technique, pushing harder if needed to reach the right depth
Ver respuesta
Respuesta: D. Use standard technique, pushing harder if needed to reach the right depth
Use standard CPR technique and consider more force to reach adequate depth.
Pregunta 2 de 25
What changed about the Chain of Survival in the 2025 AHA guidelines?
- One Universal Chain of Survival now covers adults and children
- The Chain of Survival was removed from the guidelines
- The chain now starts with giving rescue breaths first
- There are now separate chains for every age group
Ver respuesta
Respuesta: A. One Universal Chain of Survival now covers adults and children
The 2025 guidelines use a single Universal Chain of Survival for pediatric and adult cardiac arrest.
Pregunta 3 de 25
When you begin CPR on an adult in cardiac arrest, what do you start with?
- Two rescue breaths
- A pulse check for 1 minute
- Sitting the person up
- Chest compressions
Ver respuesta
Respuesta: D. Chest compressions
CPR for lay rescuers starts with chest compressions, then adds breaths if you are trained and willing.
Pregunta 4 de 25
In CPR guidelines, who counts as an infant?
- A child younger than about 5 years, before school starts
- A child younger than about 3 years, including toddlers
- Any child who is still too young to walk on their own
- A baby younger than about 1 year, not counting newborns
Ver respuesta
Respuesta: D. A baby younger than about 1 year, not counting newborns
Infants are younger than about 1 year, not counting newly born babies.
Pregunta 5 de 25
For CPR, when should you treat a young person as an adult instead of a child?
- Once they can talk
- Once they weigh more than 50 pounds (about 23 kg)
- On their 8th birthday
- Once they show signs of puberty
Ver respuesta
Respuesta: D. Once they show signs of puberty
Child CPR applies from about 1 year until puberty. After puberty, use adult CPR.
Pregunta 6 de 25
How deep should chest compressions be for an infant?
- About 1.5 inches (4 cm), at least one-third of the chest depth
- About 2.4 inches (6 cm), the same as for an adult
- About 3 inches (7.5 cm), half the depth of the chest
- About 0.5 inch (1 cm), just enough to see the chest move
Ver respuesta
Respuesta: A. About 1.5 inches (4 cm), at least one-third of the chest depth
Push at least one-third of the chest depth, about 1.5 inches (4 cm) for infants.
Pregunta 7 de 25
How deep should chest compressions be for a child?
- About 4 inches (10 cm), as deep as you can go
- About 1 inch (2.5 cm), one-tenth of the chest depth
- About 2 inches (5 cm), at least one-third of the chest depth
- About 3 inches (7.5 cm), half of the chest depth
Ver respuesta
Respuesta: C. About 2 inches (5 cm), at least one-third of the chest depth
For children, push at least one-third of the chest depth, about 2 inches (5 cm).
Pregunta 8 de 25
Which infant compression technique did the 2025 AHA guidelines stop recommending?
- The two-finger technique
- Compressions on a firm surface
- The heel of one hand
- The two-thumb encircling-hands technique
Ver respuesta
Respuesta: A. The two-finger technique
Use the heel of one hand or the two-thumb encircling-hands technique. The two-finger technique is no longer recommended.
Pregunta 9 de 25
You cannot wrap your hands around an infant's chest. Which compression technique should you use?
- The heel of one hand
- Two fingers
- The heels of both hands
- Your fist
Ver respuesta
Respuesta: A. The heel of one hand
If you cannot encircle the chest, use the heel of one hand on the breastbone.
Pregunta 10 de 25
What compression-to-breath ratio does a single rescuer use for a child or infant?
- 5:1
- 30:2
- 3:1
- 15:1
Ver respuesta
Respuesta: B. 30:2
A single rescuer uses 30:2. Two rescuers, usually health care providers, use 15:2.
Pregunta 11 de 25
Why are rescue breaths encouraged when giving CPR to children and infants?
- Children's chests are too small and soft to receive any compressions
- Breaths replace the need to call 911 for a child
- Breaths are easier to give than compressions for a child
- Breaths plus compressions improve survival in children and infants
Ver respuesta
Respuesta: D. Breaths plus compressions improve survival in children and infants
For out-of-hospital cardiac arrest in infants and children, breaths plus compressions improve survival.
Pregunta 12 de 25
You are unable or unwilling to give breaths to a child in cardiac arrest. What should you do?
- Do nothing until EMS arrives and takes over
- Shake the child firmly to try to wake them before trying anything else
- Give compression-only CPR rather than doing nothing
- Give breaths only, even though you are unwilling
Ver respuesta
Respuesta: C. Give compression-only CPR rather than doing nothing
Compression-only CPR is reasonable if a lay rescuer cannot give breaths.
Pregunta 13 de 25
An AED for a 4-year-old has pediatric pads or a pediatric setting available. What should you do?
- Wait to use the AED until the paramedics arrive
- Do not use an AED at all on a child this young
- Use the adult pads, because they give a stronger and more useful shock
- Use the pediatric pads or setting, because the child is under 8
Ver respuesta
Respuesta: D. Use the pediatric pads or setting, because the child is under 8
For infants and children under 8, use a pediatric attenuator and pediatric pads if available.
Pregunta 14 de 25
No pediatric pads are available for a 3-year-old in cardiac arrest. What should you do?
- Use the adult pads, making sure they do not touch
- Place both pads side by side on the belly
- Do not use the AED until child pads arrive
- Cut the adult pads in half with scissors so they fit the small chest
Ver respuesta
Respuesta: A. Use the adult pads, making sure they do not touch
Use the largest pads that fit while keeping good separation. Placing one pad on the front and one on the back can help.
Pregunta 15 de 25
Pad 1 in the diagram goes on an adult's bare chest. Where?
- On the upper right chest, just below the collarbone
- On the right side of the neck
- On the belly button
- On the upper left chest, directly over the heart and the left nipple
Ver respuesta
Respuesta: A. On the upper right chest, just below the collarbone
In the usual position, one pad goes on the upper right chest below the collarbone.
Pregunta 16 de 25
Where does pad 2 go?
- On the lower right side of the belly, just above the right hip
- On the top of the left shoulder
- On the left upper arm
- On the lower left side of the chest, below the armpit
Ver respuesta
Respuesta: D. On the lower left side of the chest, below the armpit
The second pad goes on the lower left side so the shock crosses the heart.
Pregunta 17 de 25
Besides the front-and-side position, what other AED pad position do the AHA guidelines allow?
- One pad on each thigh, just above the knees
- One pad on the front of the chest and one on the back
- Both pads side by side in the middle of the back
- Both pads on the same upper arm, one above the other
Ver respuesta
Respuesta: B. One pad on the front of the chest and one on the back
Pads may be placed anterolateral (front and side) or anteroposterior (front and back).
Pregunta 18 de 25
The person is wearing a bra that is in the way of an AED pad. What can you do?
- Skip the AED and keep doing CPR only
- Place the pad directly on top of the bra fabric
- Put the pad on the belly below the bra instead
- Move the bra aside instead of removing it, if the pad then fits
Ver respuesta
Respuesta: D. Move the bra aside instead of removing it, if the pad then fits
The guidelines note a bra can be adjusted rather than removed to place the pads on bare skin.
Pregunta 19 de 25
The AED is analyzing the rhythm or about to deliver a shock. What should everyone do?
- Lift the person's head
- Hold the person's hand so they know someone is with them
- Stay clear and not touch the person
- Keep giving compressions
Ver respuesta
Respuesta: C. Stay clear and not touch the person
Touching the person can affect the analysis and is unsafe during a shock.
Pregunta 20 de 25
The AED has just delivered a shock to an adult. What is your next step?
- Remove the AED pads so they do not get in the way
- Check the pulse at the neck for a full minute
- Resume chest compressions right away
- Wait 2 minutes before doing anything else
Ver respuesta
Respuesta: C. Resume chest compressions right away
Resume compressions immediately after a shock and follow the AED prompts.
Pregunta 21 de 25
An AED is on its way but not there yet. What should you do?
- Give CPR until the AED arrives and is applied
- Give only rescue breaths
- Leave to find the AED yourself and stop CPR for 5 minutes
- Wait for the AED before starting anything
Ver respuesta
Respuesta: A. Give CPR until the AED arrives and is applied
CPR is recommended until a defibrillator or AED is applied.
Pregunta 22 de 25
An adult is choking but is coughing forcefully. What should you do?
- Give abdominal thrusts right away to clear the airway
- Give them a glass of water so they can wash the food down their throat
- Do a finger sweep to try to find the object
- Let them keep coughing and watch for signs it is getting worse
Ver respuesta
Respuesta: D. Let them keep coughing and watch for signs it is getting worse
With a mild obstruction, let the person cough and watch for signs of severe obstruction.
Pregunta 23 de 25
A person clutches their throat and cannot speak or cough. What does this usually mean?
- They have a bad sore throat from a cold
- They are asking for a drink of water
- Their airway is blocked and they cannot breathe
- They are about to sneeze or cough hard and need some space
Ver respuesta
Respuesta: C. Their airway is blocked and they cannot breathe
Clutching the throat and being unable to speak or cough are signs of severe choking.
Pregunta 24 de 25
Under the 2025 AHA guidelines, how should you help an adult with severe choking?
- A slap on the face to make the person cough harder
- 30 chest compressions while the person is still standing up
- 5 back blows, then 5 abdominal thrusts, repeated until the object comes out
- Abdominal thrusts only, as many as needed, with no back blows
Ver respuesta
Respuesta: C. 5 back blows, then 5 abdominal thrusts, repeated until the object comes out
Severe choking in adults: repeated cycles of 5 back blows followed by 5 abdominal thrusts.
Pregunta 25 de 25
What should you do about 911 when an adult has severe choking?
- Activate the emergency response system (call 911)
- Call 911 only if the object is still stuck after 20 minutes
- Never call 911 for choking
- Call 911 only if the person dies
Ver respuesta
Respuesta: A. Activate the emergency response system (call 911)
The guidelines say to activate the emergency response system for severe airway obstruction.

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