AHA ACLS Final Exam 2026/2027 | Practice Questions, Correct Answers & Detailed Explanations

AHA ACLS Final Exam 2026/2027 | Practice
Questions, Correct Answers & Detailed
Explanations

AHA ACLS FINAL EXAM 2026/2027
PRACTICE QUESTIONS WITH ANSWERS & RATIONALES



DOCUMENT OVERVIEW:

• This comprehensive 200-question practice exam mirrors the actual AHA ACLS
certification test format and difficulty, allowing you to assess readiness across all
major ACLS domains and identify weak areas requiring additional review before
your certification attempt.

• Study this material by taking timed sections of 20-30 questions at a time,
reviewing every rationale regardless of answer correctness, and repeating weak
topic areas until you achieve consistent 85%+ accuracy across all question types.



QUESTION 1: Which of the following is the first step in providing BLS to an
unresponsive adult victim?

A) Start chest compressions immediately

B) Establish an airway

C) Check for responsiveness and normal breathing

D) Call 911

E) Assess for signs of life

CORRECT ANSWER: C) Check for responsiveness and normal breathing

RATIONALE: The first step in the BLS sequence is to assess responsiveness by
tapping the victim's shoulder and shouting "Are you okay?" Simultaneously, you
should observe for normal breathing (not gasping, which is a sign of cardiac arrest).
Only after confirming unresponsiveness and abnormal or absent breathing should

,you activate EMS and begin chest compressions. This assessment phase ensures
appropriate intervention.



QUESTION 2: What is the recommended compression-to-ventilation ratio for
single-rescuer CPR in adults?

A) 15:2

B) 100:30

C) 30:2

D) 50:2

E) 25:5

CORRECT ANSWER: C) 30:2

RATIONALE: The 2015 AHA guidelines established 30:2 (30 chest compressions to 2
rescue breaths) as the recommended ratio for single-rescuer CPR in adults. This
ratio optimizes coronary perfusion pressure while maintaining adequate
oxygenation. The ratio remains 30:2 for unresponsive adults regardless of the
number of rescuers present until an advanced airway is placed.



QUESTION 3: At what depth should chest compressions be performed in
adults during CPR?

A) 1 to 1.5 inches

B) 2 to 2.4 inches

C) At least 2 inches but not exceeding 2.4 inches

D) 3 to 4 inches

E) 1.5 to 2 inches

CORRECT ANSWER: C) At least 2 inches but not exceeding 2.4 inches

,RATIONALE: Current guidelines recommend chest compression depth of at least 2
inches (5 cm) but not exceeding 2.4 inches (6 cm) in adults. Depths less than 2
inches are insufficient to generate adequate coronary and cerebral perfusion.
Depths exceeding 2.4 inches increase the risk of serious internal injuries, including
rib fractures, pneumothorax, and hepatic or splenic lacerations.



QUESTION 4: What is the appropriate compression rate for high-quality CPR?

A) 60 to 80 compressions per minute

B) 80 to 100 compressions per minute

C) 100 to 120 compressions per minute

D) 120 to 140 compressions per minute

E) 140 to 160 compressions per minute

CORRECT ANSWER: C) 100 to 120 compressions per minute

RATIONALE: The recommended compression rate is 100 to 120 compressions per
minute. This rate maintains adequate cardiac output while preventing excessive
ventilation. Studies demonstrate that rates faster than 120 compressions per
minute increase the risk of excessive intrathoracic pressure and decreased
coronary perfusion. Using a metronome or music with an appropriate tempo (such
as the Bee Gees' "Stayin' Alive") helps maintain proper rhythm.



QUESTION 5: When should an AED be applied to a patient in cardiac arrest?

A) Only after 5 minutes of CPR

B) Only if signs of life return

C) As soon as it is available

D) Only after the airway is secured

E) Only if the patient is pulseless

CORRECT ANSWER: C) As soon as it is available

, RATIONALE: An AED should be applied as soon as it is available. Defibrillation within
3-5 minutes of witnessed VF significantly improves survival rates. The AED should
not be delayed for airway management, IV access, or other interventions. If an AED
is not immediately available during single-rescuer CPR, the rescuer should activate
EMS first, then retrieve the AED and begin CPR immediately.



QUESTION 6: What is the correct pad placement for AED pads in an adult?

A) Both pads on the left anterior chest wall

B) Right pad on right chest, left pad on left mid-axillary line at 5th intercostal space

C) Right pad below the right clavicle, left pad on left mid-axillary line at 5th
intercostal space

D) Both pads vertically along the left sternal border

E) Right pad on right lower chest, left pad on upper left chest

CORRECT ANSWER: C) Right pad below the right clavicle, left pad on left mid-
axillary line at 5th intercostal space

RATIONALE: Standard AED pad placement involves positioning the right pad just
below the right clavicle lateral to the right sternal border, and the left pad on the
left mid-axillary line at the 5th intercostal space (approximately at nipple level). This
anterior-lateral placement ensures optimal current flow through the myocardium
and maximum defibrillation effectiveness. Paddles or pads should be placed at
least 1 inch away from medication patches.



QUESTION 7: How many times should defibrillation be attempted before
reassessing the cardiac rhythm?

A) Once every 2 minutes

B) Once and then check for pulse

C) Three times in succession

D) Continuously until ROSC