CPR BLS Exam 2025 AHA
Questions and Answers Graded
A+.
Why is defibrillation important? CORRECT ANSWER. It can restore a regular
cardiac rhythm (An AED can identify an abnormal heart rhythm that needs
a shock. The AED can then deliver a shock that can convert a rhythm back
to normal.)
While performing high-quality CPR on an adult patient, what action should
you ensure is being accomplished? CORRECT ANSWER. Compressing to a depth
of at least 2 inches (When performing chest compressions on an adult (or
adolescent), a compression depth of at least 2 inches (5 cm) should be
used.)
A 63-year-old man collapses while mowing the lawn. He is unresponsive, is
not breathing, and does not have a pulse. A neighbor, who is an EMT, rushes
to her with an AED. When the AED arrives, what is the first step for using it?
CORRECT ANSWER. Turn on the AED (The first step for using an AED (when it
becomes available) is to power on the AED if needed. Some devices will
power on automatically when you open the lid or case. Because AEDs vary
according to the model and manufacturer, it is important to become familiar
with the AED used in your particular setting.)
After the AED pads are attached to the victim's bare chest, the AED prompts
you to shock the victim. What is the next step when using an AED? CORRECT
ANSWER. Follow the AED prompts and press the shock button once everyone
is clear. (After the AED pads are attached to the victim's bare chest, you
should follow the AED prompts. The AED will analyze the victim's heart
rhythm and prompt you to deliver a shock if needed.)
, What 2should 2you 2do 2if 2you 2need 2to 2use 2an 2AED 2on 2someone 2who 2has 2been
2submerged 2in 2a 2pool? 2CORRECT 2ANSWER. 2 Pull 2the 2victim 2out 2of 2the 2water,
2and 2wipe 2the 2chest, 2and 2use 2the 2AED 2(Special 2situations 2may 2require 2the
2rescuer 2to 2take 2additional 2actions 2when 2placing 2AED 2pads 2for 2a 2victim 2who
2is 2immersed 2in 2water. 2In 2this 2case, 2the 2victim 2should 2be 2pulled 2out 2of 2the
2water. 2If 2the 2chest 2is 2covered 2with 2some 2water, 2it 2should 2be 2quickly 2wiped
2before 2attaching 2the 2AED 2pads.)
A 2victim 2with 2who 2is 2choking 2becomes 2unresponsive. 2What 2is 2your 2first 2course
2of 2action?
CORRECT 2ANSWER. 2 Start 2CPR, 2beginning 2with 2chest 2compressions 2(Choking
2victims 2with 2severe 2airway 2obstruction 2may 2worsen 2and 2become
2unresponsive. 2If 2this 2occurs, 2then 2high-quality 2CPR 2must 2be 2started
2immediately, 2beginning 2with 2chest 2compressions.)
When 2using 2a 2bag-mask 2device, 2how 2can 2rescuers 2ensure 2that 2they 2are
2providing 2effective 2breaths? 2CORRECT 2ANSWER . 2 Observing 2the 2chest 2rise
2with 2breaths 2(Squeeze 2the 2bag 2to 2give 2breaths 2(1 2second 2each) 2while
2watching 2for 2chest 2rise. 2Deliver 2each 2breath 2over 21 2second, 2with 2or
2without 2supplementary 2oxygen.)
What 2ratio 2for 2compressions 2to 2breaths 2should 2be 2used 2for 21-rescuer
2infant 2CPR? 2CORRECT 2ANSWER . 2 30 2compressions 2to 22 2breaths 2(For 21-
rescuer 2infant 2CPR, 2the 2correct 2compression-to-ventilation 2ratio 2is 230:2.)
What 2is 2a 2consideration 2when 2you 2are 2using 2an 2AED? 2CORRECT 2ANSWER. 2 On
2a 2hairy 2chest, 2the 2pads 2may 2not 2stick 2and 2may 2fail 2to 2deliver 2a 2shock,
2therefore 2a 2razor 2should 2be 2used 2to 2shave 2the 2victim 2(Special 2situations
2may 2require 2the 2rescuer 2to 2take 2additional 2actions 2when 2placing 2AED 2pads
2on 2a 2victim 2who 2has 2a 2hairy 2chest. 2In 2this 2case, 2the 2AED 2pads 2may 2stick 2to
2the 2hair 2and 2not 2to 2the 2skin 2on 2the 2chest, 2making 2it 2difficult 2to 2analyze 2the
2victim's 2heart 2rhythm 2and 2deliver 2a 2shock 2(if 2needed). 2Most 2AED 2kits
2contain 2a 2razor 2for 2this 2reason.)
A 27-year-old 2child 2has 2suddenly 2collapsed. 2After 2confirming 2that 2the 2scene
2is 2safe, 2a 2single 2rescuer 2determines 2that 2the 2child 2is 2in 2cardiac 2arrest,
2shouts 2for 2nearby 2help, 2and 2calls 2911. 2The 2rescuer 2immediately 2begins
2CPR. 2Two 2additional 2rescuers 2arrive 2to 2assist 2in 2the 2resuscitation 2attempt.
2What 2actions 2should 2occur 2next, 2to 2support 2a 2team-based 2resuscitation
2attempt? 2CORRECT 2ANSWER . 2 2 2rescuers 2alternate 2giving 2high-quality 2chest
2compressions 2(To 2reduce 2rescuer 2fatigue, 2switch 2compressors 2every 25
2cycles 2(about 22 2minutes) 2or 2sooner 2if 2needed. 2To 2minimize 2interruptions 2in
2compressions, 2perform 2the 2switch 2when 2the 2AED 2is 2analyzing 2the 2rhythm.
2Take 2less 2than 25 2seconds 2to 2switch.)
Two 2rescuers 2begin 2CPR 2while 2the 2third 2rescuer 2leaves 2to 2get 2the 2AED.
2What 2action 2supports 22-rescuer 2CPR? 2CORRECT 2ANSWER. 2 Alternating 2the
2compressor 2role 2every 22 2minutes 2(To 2reduce 2rescuer 2fatigue, 2switch
2compressors 2every 25 2cycles 2(about 22 2minutes) 2or 2sooner 2if 2needed. 2To
2minimize 2interruptions 2in 2compressions, 2perform 2the 2switch 2when 2the 2AED
Questions and Answers Graded
A+.
Why is defibrillation important? CORRECT ANSWER. It can restore a regular
cardiac rhythm (An AED can identify an abnormal heart rhythm that needs
a shock. The AED can then deliver a shock that can convert a rhythm back
to normal.)
While performing high-quality CPR on an adult patient, what action should
you ensure is being accomplished? CORRECT ANSWER. Compressing to a depth
of at least 2 inches (When performing chest compressions on an adult (or
adolescent), a compression depth of at least 2 inches (5 cm) should be
used.)
A 63-year-old man collapses while mowing the lawn. He is unresponsive, is
not breathing, and does not have a pulse. A neighbor, who is an EMT, rushes
to her with an AED. When the AED arrives, what is the first step for using it?
CORRECT ANSWER. Turn on the AED (The first step for using an AED (when it
becomes available) is to power on the AED if needed. Some devices will
power on automatically when you open the lid or case. Because AEDs vary
according to the model and manufacturer, it is important to become familiar
with the AED used in your particular setting.)
After the AED pads are attached to the victim's bare chest, the AED prompts
you to shock the victim. What is the next step when using an AED? CORRECT
ANSWER. Follow the AED prompts and press the shock button once everyone
is clear. (After the AED pads are attached to the victim's bare chest, you
should follow the AED prompts. The AED will analyze the victim's heart
rhythm and prompt you to deliver a shock if needed.)
, What 2should 2you 2do 2if 2you 2need 2to 2use 2an 2AED 2on 2someone 2who 2has 2been
2submerged 2in 2a 2pool? 2CORRECT 2ANSWER. 2 Pull 2the 2victim 2out 2of 2the 2water,
2and 2wipe 2the 2chest, 2and 2use 2the 2AED 2(Special 2situations 2may 2require 2the
2rescuer 2to 2take 2additional 2actions 2when 2placing 2AED 2pads 2for 2a 2victim 2who
2is 2immersed 2in 2water. 2In 2this 2case, 2the 2victim 2should 2be 2pulled 2out 2of 2the
2water. 2If 2the 2chest 2is 2covered 2with 2some 2water, 2it 2should 2be 2quickly 2wiped
2before 2attaching 2the 2AED 2pads.)
A 2victim 2with 2who 2is 2choking 2becomes 2unresponsive. 2What 2is 2your 2first 2course
2of 2action?
CORRECT 2ANSWER. 2 Start 2CPR, 2beginning 2with 2chest 2compressions 2(Choking
2victims 2with 2severe 2airway 2obstruction 2may 2worsen 2and 2become
2unresponsive. 2If 2this 2occurs, 2then 2high-quality 2CPR 2must 2be 2started
2immediately, 2beginning 2with 2chest 2compressions.)
When 2using 2a 2bag-mask 2device, 2how 2can 2rescuers 2ensure 2that 2they 2are
2providing 2effective 2breaths? 2CORRECT 2ANSWER . 2 Observing 2the 2chest 2rise
2with 2breaths 2(Squeeze 2the 2bag 2to 2give 2breaths 2(1 2second 2each) 2while
2watching 2for 2chest 2rise. 2Deliver 2each 2breath 2over 21 2second, 2with 2or
2without 2supplementary 2oxygen.)
What 2ratio 2for 2compressions 2to 2breaths 2should 2be 2used 2for 21-rescuer
2infant 2CPR? 2CORRECT 2ANSWER . 2 30 2compressions 2to 22 2breaths 2(For 21-
rescuer 2infant 2CPR, 2the 2correct 2compression-to-ventilation 2ratio 2is 230:2.)
What 2is 2a 2consideration 2when 2you 2are 2using 2an 2AED? 2CORRECT 2ANSWER. 2 On
2a 2hairy 2chest, 2the 2pads 2may 2not 2stick 2and 2may 2fail 2to 2deliver 2a 2shock,
2therefore 2a 2razor 2should 2be 2used 2to 2shave 2the 2victim 2(Special 2situations
2may 2require 2the 2rescuer 2to 2take 2additional 2actions 2when 2placing 2AED 2pads
2on 2a 2victim 2who 2has 2a 2hairy 2chest. 2In 2this 2case, 2the 2AED 2pads 2may 2stick 2to
2the 2hair 2and 2not 2to 2the 2skin 2on 2the 2chest, 2making 2it 2difficult 2to 2analyze 2the
2victim's 2heart 2rhythm 2and 2deliver 2a 2shock 2(if 2needed). 2Most 2AED 2kits
2contain 2a 2razor 2for 2this 2reason.)
A 27-year-old 2child 2has 2suddenly 2collapsed. 2After 2confirming 2that 2the 2scene
2is 2safe, 2a 2single 2rescuer 2determines 2that 2the 2child 2is 2in 2cardiac 2arrest,
2shouts 2for 2nearby 2help, 2and 2calls 2911. 2The 2rescuer 2immediately 2begins
2CPR. 2Two 2additional 2rescuers 2arrive 2to 2assist 2in 2the 2resuscitation 2attempt.
2What 2actions 2should 2occur 2next, 2to 2support 2a 2team-based 2resuscitation
2attempt? 2CORRECT 2ANSWER . 2 2 2rescuers 2alternate 2giving 2high-quality 2chest
2compressions 2(To 2reduce 2rescuer 2fatigue, 2switch 2compressors 2every 25
2cycles 2(about 22 2minutes) 2or 2sooner 2if 2needed. 2To 2minimize 2interruptions 2in
2compressions, 2perform 2the 2switch 2when 2the 2AED 2is 2analyzing 2the 2rhythm.
2Take 2less 2than 25 2seconds 2to 2switch.)
Two 2rescuers 2begin 2CPR 2while 2the 2third 2rescuer 2leaves 2to 2get 2the 2AED.
2What 2action 2supports 22-rescuer 2CPR? 2CORRECT 2ANSWER. 2 Alternating 2the
2compressor 2role 2every 22 2minutes 2(To 2reduce 2rescuer 2fatigue, 2switch
2compressors 2every 25 2cycles 2(about 22 2minutes) 2or 2sooner 2if 2needed. 2To
2minimize 2interruptions 2in 2compressions, 2perform 2the 2switch 2when 2the 2AED
