ACLS Post Test 1, 2, 3 & 4 Actual Questions with
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Question 1
Which type of atrioventricular block best describes this rhythm?
A) First-degree
B) Second-degree type I
C) Second-degree type II
D) Third-degree
VERIFIED ANSWER: C) Second-degree type II
Rationale: Second-degree type II AV block is characterized by
intermittent non-conducted P waves without PR interval prolongation
before the dropped beat. This distinguishes it from type I (Wenckebach),
which shows progressive PR lengthening.
Question 2
Your patient is in cardiac arrest and has been intubated. To assess CPR
quality, which should you do?
,A) Monitor the patient's PETCO₂
B) Obtain a 12-lead ECG
C) Check the patient's pulse
D) Obtain a chest x-ray
VERIFIED ANSWER: A) Monitor the patient's PETCO₂
Rationale: PETCO₂ (end-tidal CO₂) correlates with cardiac output during
CPR. A PETCO₂ <10 mmHg suggests poor CPR quality; a sudden increase
may indicate return of spontaneous circulation (ROSC).
Question 3
Which facility is the most appropriate EMS destination for a patient with
sudden cardiac arrest who achieved return of spontaneous circulation in
the field?
A) Comprehensive stroke care unit
B) Acute rehabilitation care unit
C) Acute long-term care unit
D) Coronary reperfusion-capable medical center
VERIFIED ANSWER: D) Coronary reperfusion-capable medical center
Rationale: Post-cardiac arrest patients with ROSC should be transported
to a facility capable of coronary angiography and PCI, as acute coronary
occlusion is a common cause of sudden cardiac arrest.
,Question 4
Which of the following signs is a likely indicator of cardiac arrest in an
unresponsive patient?
A) Slow, weak pulse rate
B) Cyanosis
C) Agonal gasps
D) Irregular, weak pulse rate
VERIFIED ANSWER: C) Agonal gasps
Rationale: Agonal gasps are abnormal, sporadic, often irregular breaths
that occur in up to 40% of cardiac arrest patients. They should not be
mistaken for normal breathing; they indicate the need for CPR.
Question 5
Which type of atrioventricular block best describes this rhythm?
A) Third-degree atrioventricular block
B) Second-degree atrioventricular block type I
C) First-degree atrioventricular block
D) Second-degree atrioventricular block type II
VERIFIED ANSWER: B) Second-degree atrioventricular block type I
Rationale: Second-degree type I (Mobitz I/Wenckebach) shows
progressive PR interval prolongation until a QRS complex is dropped.
, Question 6
To properly ventilate a patient with a perfusing rhythm, how often do you
squeeze the bag?
A) Once every 3 to 4 seconds
B) Once every 5 to 6 seconds
C) Once every 10 seconds
D) Once every 12 seconds
VERIFIED ANSWER: B) Once every 5 to 6 seconds
Rationale: For a patient with a perfusing rhythm (not in cardiac arrest),
the recommended ventilation rate is 10-12 breaths/min (one breath every
5-6 seconds).
Question 7
In addition to clinical assessment, which is the most reliable method to
confirm and monitor correct placement of an endotracheal tube?
A) Arterial blood gases
B) Chest radiography
C) Continuous waveform capnography
D) Hemoglobin levels
VERIFIED ANSWER: C) Continuous waveform capnography
Verified Answers (), 100%
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Question 1
Which type of atrioventricular block best describes this rhythm?
A) First-degree
B) Second-degree type I
C) Second-degree type II
D) Third-degree
VERIFIED ANSWER: C) Second-degree type II
Rationale: Second-degree type II AV block is characterized by
intermittent non-conducted P waves without PR interval prolongation
before the dropped beat. This distinguishes it from type I (Wenckebach),
which shows progressive PR lengthening.
Question 2
Your patient is in cardiac arrest and has been intubated. To assess CPR
quality, which should you do?
,A) Monitor the patient's PETCO₂
B) Obtain a 12-lead ECG
C) Check the patient's pulse
D) Obtain a chest x-ray
VERIFIED ANSWER: A) Monitor the patient's PETCO₂
Rationale: PETCO₂ (end-tidal CO₂) correlates with cardiac output during
CPR. A PETCO₂ <10 mmHg suggests poor CPR quality; a sudden increase
may indicate return of spontaneous circulation (ROSC).
Question 3
Which facility is the most appropriate EMS destination for a patient with
sudden cardiac arrest who achieved return of spontaneous circulation in
the field?
A) Comprehensive stroke care unit
B) Acute rehabilitation care unit
C) Acute long-term care unit
D) Coronary reperfusion-capable medical center
VERIFIED ANSWER: D) Coronary reperfusion-capable medical center
Rationale: Post-cardiac arrest patients with ROSC should be transported
to a facility capable of coronary angiography and PCI, as acute coronary
occlusion is a common cause of sudden cardiac arrest.
,Question 4
Which of the following signs is a likely indicator of cardiac arrest in an
unresponsive patient?
A) Slow, weak pulse rate
B) Cyanosis
C) Agonal gasps
D) Irregular, weak pulse rate
VERIFIED ANSWER: C) Agonal gasps
Rationale: Agonal gasps are abnormal, sporadic, often irregular breaths
that occur in up to 40% of cardiac arrest patients. They should not be
mistaken for normal breathing; they indicate the need for CPR.
Question 5
Which type of atrioventricular block best describes this rhythm?
A) Third-degree atrioventricular block
B) Second-degree atrioventricular block type I
C) First-degree atrioventricular block
D) Second-degree atrioventricular block type II
VERIFIED ANSWER: B) Second-degree atrioventricular block type I
Rationale: Second-degree type I (Mobitz I/Wenckebach) shows
progressive PR interval prolongation until a QRS complex is dropped.
, Question 6
To properly ventilate a patient with a perfusing rhythm, how often do you
squeeze the bag?
A) Once every 3 to 4 seconds
B) Once every 5 to 6 seconds
C) Once every 10 seconds
D) Once every 12 seconds
VERIFIED ANSWER: B) Once every 5 to 6 seconds
Rationale: For a patient with a perfusing rhythm (not in cardiac arrest),
the recommended ventilation rate is 10-12 breaths/min (one breath every
5-6 seconds).
Question 7
In addition to clinical assessment, which is the most reliable method to
confirm and monitor correct placement of an endotracheal tube?
A) Arterial blood gases
B) Chest radiography
C) Continuous waveform capnography
D) Hemoglobin levels
VERIFIED ANSWER: C) Continuous waveform capnography
