ATI ENGAGE |Cardiac Rhythms, Labs, and Conditions Exam Actual
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Which ECG characteristic is diagnostic of Ventricular Fibrillation (V-Fib)?
A) Regular rhythm with delta waves
B) Rapid, bizarre, irregular waveforms with no discernible P waves or
QRS complexes
C) Sawtooth flutter waves at 300 bpm
D) Prolonged PR interval exceeding 0.20 seconds -ANSWER-B) Rapid,
bizarre, irregular waveforms with no discernible P waves or QRS
complexes
What is the immediate priority intervention for a client in pulseless
Ventricular Fibrillation?
A) Administering atropine IV push
B) High-quality CPR and immediate defibrillation
C) Synchronized cardioversion at 50 joules
D) Transcutaneous pacing -ANSWER-B) High-quality CPR and immediate
defibrillation
Which finding differentiates Pulseless Ventricular Tachycardia from
Ventricular Fibrillation on an ECG?
,A) V-Tach shows wide, bizarre QRS complexes in a regular or slightly
irregular pattern; V-Fib shows chaotic, disorganized activity
B) V-Tach has normal P waves
C) V-Fib has sawtooth waves
D) V-Tach has a normal heart rate -ANSWER-A) V-Tach shows wide,
bizarre QRS complexes in a regular or slightly irregular pattern; V-Fib
shows chaotic, disorganized activity
A client presents with stable Ventricular Tachycardia. Which medication
is commonly administered first?
A) Adenosine
B) Amiodarone
C) Digoxin
D) Atropine -ANSWER-B) Amiodarone
What is the hallmark ECG feature of Atrial Fibrillation?
A) Sawtooth baseline waves
B) Irregularly irregular rhythm with absent distinct P waves
C) PR interval greater than 0.28 seconds
D) Regular rhythm at 150 bpm -ANSWER-B) Irregularly irregular rhythm
with absent distinct P waves
What is the primary systemic risk associated with untreated chronic
Atrial Fibrillation?
,A) Pulmonary embolism
B) Thromboembolism and stroke due to blood pooling in the atria
C) Severe hypertension
D) Acute kidney failure -ANSWER-B) Thromboembolism and stroke due
to blood pooling in the atria
Which ECG pattern is characteristic of Atrial Flutter?
A) Chaotic baseline with no QRS
B) Sawtooth or picket-fence flutter waves (F waves) with a regular or
variable ventricular response
C) Prolonged QT interval
D) Widened QRS complex with delta wave -ANSWER-B) Sawtooth or
picket-fence flutter waves (F waves) with a regular or variable
ventricular response
What is the typical heart rate range for Supraventricular Tachycardia
(SVT)?
A) 60-100 bpm
B) 100-150 bpm
C) 150-250 bpm
D) 300-400 bpm -ANSWER-C) 150-250 bpm
What is the first-line pharmacologic treatment to terminate acute SVT?
, A) Lidocaine
B) Adenosine rapid IV push followed by a saline flush
C) Metoprolol oral
D) Epinephrine -ANSWER-B) Adenosine rapid IV push followed by a
saline flush
What defines Sinus Tachycardia on an ECG?
A) Normal sinus rhythm with a rate exceeding 100 bpm
B) Rate below 60 bpm with normal P waves
C) Absent P waves with irregular QRS
D) Widened QRS complex and slow rate -ANSWER-A) Normal sinus
rhythm with a rate exceeding 100 bpm
Which finding characterizes a First-Degree AV Block?
A) Progressive lengthening of the PR interval until a QRS is dropped
B) Constant PR interval greater than 0.20 seconds with every P wave
followed by a QRS
C) Random dropped QRS complexes
D) Complete AV dissociation -ANSWER-B) Constant PR interval greater
than 0.20 seconds with every P wave followed by a QRS
Second-Degree AV Block Type I (Mobitz I / Wenckebach) is best
identified by which ECG feature?
Exam 2026 || Most Recent Exam 2026|2027 Actual Complete Real
Exam Questions And Correct Answers (Verified Answers) Already
Graded A+ | Guaranteed Success!! Newest Exam | Just Released!!
Which ECG characteristic is diagnostic of Ventricular Fibrillation (V-Fib)?
A) Regular rhythm with delta waves
B) Rapid, bizarre, irregular waveforms with no discernible P waves or
QRS complexes
C) Sawtooth flutter waves at 300 bpm
D) Prolonged PR interval exceeding 0.20 seconds -ANSWER-B) Rapid,
bizarre, irregular waveforms with no discernible P waves or QRS
complexes
What is the immediate priority intervention for a client in pulseless
Ventricular Fibrillation?
A) Administering atropine IV push
B) High-quality CPR and immediate defibrillation
C) Synchronized cardioversion at 50 joules
D) Transcutaneous pacing -ANSWER-B) High-quality CPR and immediate
defibrillation
Which finding differentiates Pulseless Ventricular Tachycardia from
Ventricular Fibrillation on an ECG?
,A) V-Tach shows wide, bizarre QRS complexes in a regular or slightly
irregular pattern; V-Fib shows chaotic, disorganized activity
B) V-Tach has normal P waves
C) V-Fib has sawtooth waves
D) V-Tach has a normal heart rate -ANSWER-A) V-Tach shows wide,
bizarre QRS complexes in a regular or slightly irregular pattern; V-Fib
shows chaotic, disorganized activity
A client presents with stable Ventricular Tachycardia. Which medication
is commonly administered first?
A) Adenosine
B) Amiodarone
C) Digoxin
D) Atropine -ANSWER-B) Amiodarone
What is the hallmark ECG feature of Atrial Fibrillation?
A) Sawtooth baseline waves
B) Irregularly irregular rhythm with absent distinct P waves
C) PR interval greater than 0.28 seconds
D) Regular rhythm at 150 bpm -ANSWER-B) Irregularly irregular rhythm
with absent distinct P waves
What is the primary systemic risk associated with untreated chronic
Atrial Fibrillation?
,A) Pulmonary embolism
B) Thromboembolism and stroke due to blood pooling in the atria
C) Severe hypertension
D) Acute kidney failure -ANSWER-B) Thromboembolism and stroke due
to blood pooling in the atria
Which ECG pattern is characteristic of Atrial Flutter?
A) Chaotic baseline with no QRS
B) Sawtooth or picket-fence flutter waves (F waves) with a regular or
variable ventricular response
C) Prolonged QT interval
D) Widened QRS complex with delta wave -ANSWER-B) Sawtooth or
picket-fence flutter waves (F waves) with a regular or variable
ventricular response
What is the typical heart rate range for Supraventricular Tachycardia
(SVT)?
A) 60-100 bpm
B) 100-150 bpm
C) 150-250 bpm
D) 300-400 bpm -ANSWER-C) 150-250 bpm
What is the first-line pharmacologic treatment to terminate acute SVT?
, A) Lidocaine
B) Adenosine rapid IV push followed by a saline flush
C) Metoprolol oral
D) Epinephrine -ANSWER-B) Adenosine rapid IV push followed by a
saline flush
What defines Sinus Tachycardia on an ECG?
A) Normal sinus rhythm with a rate exceeding 100 bpm
B) Rate below 60 bpm with normal P waves
C) Absent P waves with irregular QRS
D) Widened QRS complex and slow rate -ANSWER-A) Normal sinus
rhythm with a rate exceeding 100 bpm
Which finding characterizes a First-Degree AV Block?
A) Progressive lengthening of the PR interval until a QRS is dropped
B) Constant PR interval greater than 0.20 seconds with every P wave
followed by a QRS
C) Random dropped QRS complexes
D) Complete AV dissociation -ANSWER-B) Constant PR interval greater
than 0.20 seconds with every P wave followed by a QRS
Second-Degree AV Block Type I (Mobitz I / Wenckebach) is best
identified by which ECG feature?
