A
Which heart chamber has the highest systolic pressure and why?
A) Right ventricle — pumps blood to lungs
B) Left ventricle — pumps against systemic resistance
C) Right atrium — fills coronary sinus
D) Left atrium — receives pulmonary venous return
Answer: B) Left ventricle — pumps against systemic resistance
“CPR always brings a person back to life.”
A) Myth
B) Fact
Answer: A) Myth — CPR increases chances of survival but doesn’t guarantee revival.
"CPR can only be done by doctors or medical professionals.”
A) Myth
B) Fact
Answer: A) Myth. Anyone can perform hands-only CPR — push hard and fast in the center of the chest. Early action by bystanders saves lives before professionals arrive.
What structure delays electrical conduction between atria and ventricles?
A) SA node
B) AV node
C) Bundle of His
D) Purkinje fibers
Answer: B) AV node
Which of the following should not be done during CPR?
A) Allow chest recoil
B) Push fast and hard
C) Lean on the chest between compressions
D) Maintain a rate of 100–120/min
Answer: C) Lean on the chest between compressions
“During CPR, you should stop if you hear ribs crack.”
A) Myth
B) Fact
Answer: A) Myth — Continue CPR; cracked ribs can happen and are not a reason to stop.
What is the first thing you should do if you see someone collapse?
A) Start chest compressions immediately
B) Check for safety and responsiveness, then call for help
C) Give them water
D) Wait to see if they get up
Answer: B) Check for safety and responsiveness, then call for help
Ideal compression rate per minute:
A) 60–80
B) 80–100
C) 100–120
D) 120–150
Answer: C) 100–120
Which valve prevents backflow of blood from the pulmonary artery into the right ventricle?
A) Tricuspid valve
B) Pulmonary valve
C) Mitral valve
D) Aortic valve
Answer: B) Pulmonary valve
You should stop compressions to check pulse every 10 seconds.
A) True
B) False
Answer: B) False
When was the American College of Cardiology (ACC) founded?
A) 1939
B) 1949
C) 1959
D) 1969
Answer: B) 1949
Common compression mistake:
A) Compressing too deep
B) Not allowing full chest recoil
C) Not using AED soon enough
D) Giving 2 breaths every 15 compressions
Answer: B) Not allowing full chest recoil
During CPR, someone notices the chest isn’t rising during breaths. What should you check?
A) Hand position
B) Airway and head tilt–chin lift
C) Pulse
D) Compression depth
Answer: B) Airway and head tilt–chin lift
You’re performing CPR and a bystander asks if you should stop because the person isn’t responding. What should you do?
A) Stop immediately
B) Continue CPR until help or AED arrives
C) Wait to see if the person starts breathing
D) Try splashing water
Answer: B) Continue CPR until help or AED arrives
Recommended compression-to-breath ratio in adults:
A) 15:2
B) 30:2
C) 20:2
D) 30:1
Answer: B) 30:2
Which coronary artery most commonly supplies the AV node in a right-dominant circulation?
A) Left anterior descending artery
B) Right coronary artery
C) Circumflex artery
D) Posterior descending artery
Answer: B) Right coronary artery
During CPR, the AED says “no shock advised.” What’s next?
A) Check pulse for 30 seconds
B) Resume chest compressions immediately
C) Give rescue breaths only
D) Re-analyze rhythm
Answer: B) Resume chest compressions immediately
After delivering a shock with an AED, what’s next?
A) Check pulse
B) Continue ventilation only
C) Resume CPR starting with compressions
D) Wait for AED to analyze again
Answer: C) Resume CPR starting with compressions
If you witness a sudden collapse and there’s no pulse, what should you do first?
A) Start chest compressions
B) Call for help and get an AED
C) Give two rescue breaths
D) Place the person in recovery position
Answer: B) Call for help and get an AED
What must you avoid when using an AED?
A) Placing pads on dry skin
B) Touching the patient during shock
C) Saying “clear”
D) Checking responsiveness
Answer: B) Touching the patient during shock
Correct compression depth in adult CPR:
A) 1 inch (2.5 cm)
B) 1.5 inches (4 cm)
C) At least 2 inches (5 cm)
D) More than 3 inches (7.5 cm)
Answer: C) At least 2 inches (5 cm)
The mission of the ACC is to:
A) Promote heart surgeries worldwide
B) Transform cardiovascular care and improve heart health
C) Train only cardiologists
D) Fund cardiac hospitals
Answer: B) Transform cardiovascular care and improve heart health
A 40-year-old man suddenly collapses in the gym. You begin CPR. After 2 minutes, he starts breathing. What should you do next?
A) Continue compressions
B) Stop CPR and place him in recovery position
C) Give rescue breaths only
D) Apply AED again
Answer: B) Stop CPR and place him in recovery position
Why is excessive ventilation harmful during CPR?
A) Causes chest wall injury
B) Increases intrathoracic pressure, reducing venous return
C) Decreases oxygen saturation
D) Slows heart rhythm
Answer: B) Increases intrathoracic pressure, reducing venous return.
A blockage in the LAD (Left Anterior Descending) artery mainly affects which area?
A) Right atrium
B) Posterior wall of left ventricle
C) Anterior left ventricle wall and anterior septum
D) Lateral wall of left ventricle
Answer: C) Anterior LV wall and anterior septum