AACN ECG WRITTEN EXAM ACTUAL EXAM 100 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH RATIONALES (100%
VERIFIED ANSWERS)
Sinus arrest may be life threatening if atrial activity is not restarted. - ANSWER: True
Which of the following is NOT a common cause of third-degree AV block? - ANSWER:
Hypertrophic obstructive cardiomyopathy
All of the following are findings of Second Degree AV Block Type I except: - ANSWER:
Frequent idioventricular escape beats
You recently take over care of Ms. Alrashid, a 34 year old Egyptian woman admitted
to your unit. Thirty (30) minutes ago she converts from Sinus Rhythm to atrial
tachycardia. What symptoms are she likely to report when you go in to assess her,
and why? - ANSWER: She feels weak and dizzy because her heart rate is so fast
ventricular filling time is decreased. This is likely to be why she is hypotensive.
A rhythm strip that has consistent R-R intervals and P-P intervals is said to be a
regular rhythm. - ANSWER: True
All second degree AV blocks are the result of failure of the impulse generated by the
SA node to reach the AV node. - ANSWER: False
Which of the following is the rate for a junctional escape rhythm? - ANSWER: 40 - 60
beats per minute
Multifocal atrial tachycardia, also known as Wandering Atrial Pacemaker, is
identified by: - ANSWER: Irregular R-R interval and P waves of different shapes
In a typical 5 lead configuration where is the white electrode (RA) placed? -
ANSWER: The white electrode (RA) is placed at the infraclavicular fossa, close to
the right shoulder.
Atrial Fibrillation is identified by all of the following except: - ANSWER: B) Normal P-
P interval
In a patient with a Second Degree AV block, you understand that impulses coming
from the SA node are randomly being blocked at ____________. - ANSWER: A point
below the AV node
When selecting a lead to monitor which of the following should be present? -
ANSWER: A large, distinct R wave
, Using the sequence method, there is an R wave that hits on a dark line, the next R
wave is 4 boxes later. The rate for this strip is: - ANSWER: 75 beats/min
The PR interval: (Select all that apply) - ANSWER: Includes the P wave and the PR
segment
Is measured from the beginning of the P wave to the beginning of the QRS
Is typically 0.12 - 0.20 seconds (120 - 200 msec)
What bipolar lead is similar to V1? - ANSWER: Lead MCL1
You are caring for a 16 y/o female in the emergency department. She presented with
complaints of chest pain with sudden movement or when taking a deep breath. The
physician asked for her to be placed on a cardiac monitor and to obtain a 12 Lead
ECG. She is in sinus rhythm but on closer observation you notice her HR drops from
80 to 72 during expiration, then increases to 80 again with inspiration. You identify
the rhythm as _______________, and your interventions will include
_________________. - ANSWER: Sinus Arrhythmia; post the rhythm strip noting
that this is common in adolescents and continue to monitor
R-R interval helps determine ventricular rates. Atrial rates are determined using
which of the following? - ANSWER: P to P interval
Mr. Pratz is a 68 y/o male admitted to the hospital with a newly diagnosed
cardiomyopathy most likely from a viral infection. His bedside monitor shows him to
be experiencing periods of bigeminy PVCs and occasional couplets. The alarm on his
monitor sounds as you enter his room. He is awake and alert, rubbing his chest and
complaining of shortness of breath and chest pain. The physician enters the room
and requests preparation for synchronized electrical cardioversion. As you are
gathering equipment to perform the cardioversion, Mr. Pratz becomes unresponsive
and has no palpable pulse. Your immediate response is: - ANSWER: Immediately
begin CPR and prepare to perform electrical defibrillation
To calculate the ventricular rate using the 6 second method, multiply by 10 which of
the following indicators. - ANSWER: Tll the R waves inside the 30 big boxes or 3
hash marks at the top of the strip
Temporary epicardial pacing requires that: - ANSWER: Pacing wires are placed
directly on the heart muscle by the cardiothoracic surgeon during cardiac surgery
Which of the following is a normal PR interval? - ANSWER: 3-5 small boxes (0.12-
0.20 seconds)
You are caring for a 58 y/o male who came into the ED this morning complaining of
dizziness and mild chest discomfort. He is placed on the bedside monitor, analyze
the rhythm and note it to be Second degree AV Block Type II. This patient has a
AND CORRECT DETAILED ANSWERS WITH RATIONALES (100%
VERIFIED ANSWERS)
Sinus arrest may be life threatening if atrial activity is not restarted. - ANSWER: True
Which of the following is NOT a common cause of third-degree AV block? - ANSWER:
Hypertrophic obstructive cardiomyopathy
All of the following are findings of Second Degree AV Block Type I except: - ANSWER:
Frequent idioventricular escape beats
You recently take over care of Ms. Alrashid, a 34 year old Egyptian woman admitted
to your unit. Thirty (30) minutes ago she converts from Sinus Rhythm to atrial
tachycardia. What symptoms are she likely to report when you go in to assess her,
and why? - ANSWER: She feels weak and dizzy because her heart rate is so fast
ventricular filling time is decreased. This is likely to be why she is hypotensive.
A rhythm strip that has consistent R-R intervals and P-P intervals is said to be a
regular rhythm. - ANSWER: True
All second degree AV blocks are the result of failure of the impulse generated by the
SA node to reach the AV node. - ANSWER: False
Which of the following is the rate for a junctional escape rhythm? - ANSWER: 40 - 60
beats per minute
Multifocal atrial tachycardia, also known as Wandering Atrial Pacemaker, is
identified by: - ANSWER: Irregular R-R interval and P waves of different shapes
In a typical 5 lead configuration where is the white electrode (RA) placed? -
ANSWER: The white electrode (RA) is placed at the infraclavicular fossa, close to
the right shoulder.
Atrial Fibrillation is identified by all of the following except: - ANSWER: B) Normal P-
P interval
In a patient with a Second Degree AV block, you understand that impulses coming
from the SA node are randomly being blocked at ____________. - ANSWER: A point
below the AV node
When selecting a lead to monitor which of the following should be present? -
ANSWER: A large, distinct R wave
, Using the sequence method, there is an R wave that hits on a dark line, the next R
wave is 4 boxes later. The rate for this strip is: - ANSWER: 75 beats/min
The PR interval: (Select all that apply) - ANSWER: Includes the P wave and the PR
segment
Is measured from the beginning of the P wave to the beginning of the QRS
Is typically 0.12 - 0.20 seconds (120 - 200 msec)
What bipolar lead is similar to V1? - ANSWER: Lead MCL1
You are caring for a 16 y/o female in the emergency department. She presented with
complaints of chest pain with sudden movement or when taking a deep breath. The
physician asked for her to be placed on a cardiac monitor and to obtain a 12 Lead
ECG. She is in sinus rhythm but on closer observation you notice her HR drops from
80 to 72 during expiration, then increases to 80 again with inspiration. You identify
the rhythm as _______________, and your interventions will include
_________________. - ANSWER: Sinus Arrhythmia; post the rhythm strip noting
that this is common in adolescents and continue to monitor
R-R interval helps determine ventricular rates. Atrial rates are determined using
which of the following? - ANSWER: P to P interval
Mr. Pratz is a 68 y/o male admitted to the hospital with a newly diagnosed
cardiomyopathy most likely from a viral infection. His bedside monitor shows him to
be experiencing periods of bigeminy PVCs and occasional couplets. The alarm on his
monitor sounds as you enter his room. He is awake and alert, rubbing his chest and
complaining of shortness of breath and chest pain. The physician enters the room
and requests preparation for synchronized electrical cardioversion. As you are
gathering equipment to perform the cardioversion, Mr. Pratz becomes unresponsive
and has no palpable pulse. Your immediate response is: - ANSWER: Immediately
begin CPR and prepare to perform electrical defibrillation
To calculate the ventricular rate using the 6 second method, multiply by 10 which of
the following indicators. - ANSWER: Tll the R waves inside the 30 big boxes or 3
hash marks at the top of the strip
Temporary epicardial pacing requires that: - ANSWER: Pacing wires are placed
directly on the heart muscle by the cardiothoracic surgeon during cardiac surgery
Which of the following is a normal PR interval? - ANSWER: 3-5 small boxes (0.12-
0.20 seconds)
You are caring for a 58 y/o male who came into the ED this morning complaining of
dizziness and mild chest discomfort. He is placed on the bedside monitor, analyze
the rhythm and note it to be Second degree AV Block Type II. This patient has a
