EKG FINAL EXAM WITH CORRECT
ANSWERS 2025
A branch of the _______ supplies the right atrium and right ventricle
with blood
( correct answers ) right coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in ( correc
what action? answers ) Slowed conduction through the t
atrioventricular (AV) node
The contribution of blood that is added to the ventricles and results
from atrial contraction is called: ( correct answers ) atrial kick
Semilunar Valves include: ( correct answers ) pulmonary valve
and aortic valve
The left main coronary artery divides into the ( correct answers )
LAD and Cx branches
_____ cells are specialized cells of the electrical conduction system
responsible for the spontaneous generation and conduction of electrical
impulses. ( correct answers )
Pacemaker
The absolute refractory period beings with.... ( correct answers )
begins with the onset of the QRS complex and terminates at
approximately the apex of the T wave
T/F: The QT interval represents the time from initial depolarization of the
ventricles to the end of ventricular repolarization ( correct answers )
true
How do you determine whether the atrial rhythm on an ECG tracing
is regular or irregular? ( correct answers ) compare P-P intervals
Which ECG leads use two distinct electrodes, one of which is positive
and the other negative? ( correct answers ) leads I, II, and III
In sinus arrhythmia, a gradual decreasing of the heart rate is usually
associated with? ( correct answers ) expiration
An ECG rhythm strip shows a ventricular rate of 46 bpm, a regular
rhythm, a PR interval of 0.14 second, a QRS duration of 0.06 second, and
one upright P wave before each QRS. This rhythm is: ( correct
answers ) sinus bradycardia
, SA block is a disorder of ______, and sinus arrest is a disorder of impulse
_______.
( correct answers ) SA block is a disorder of conduction
Sinus arrest is a disorder of formation
Signs and symptoms experienced during a tachydysrhythmia are usually
primarily related to: ( correct answers ) decreased ventricular filling
time and stroke volume
Example that reflects ectopic (latent) pacemaker: ( correct
answers ) the AV junction and ventricles
A wandering atrial pacemaker rhythm with a ventricular rate of 60 to
100 bpm may also be referred to as: ( correct answers ) multiform
atrial rhythm
The most common type of supraventricular tachycardia (SVT) is?( correct
answers ) AVNRT-- AV nodal reentrant tachycardia
If the onset or end of paroxysmal atrial tachycardia or paroxysmal
supraventricular tachycardia (PVST) is not observed on the ECG, the
dysrhythmia is called: ( correct answers ) SVT
paroxysmal means sudden onset
Most common sustained dysrhythmia in adults? ( correct
answers ) AFib T/F: The difference between premature atrial
complexes (PACs) and premature
junctional complexes (PJCs) in leads II, III and aVF is a PAC typically has a
positive P wave before the QRS complex, whereas a P wave may or may
not be present in a PJC ( correct answers ) true
A Wolff-Parkinson-White (WPW) pattern is associated with a : ( correct
answers ) short PR interval, delta wave, and wide QRS complex
What is the main difference between atrial flutter and other atrial
dysrhythmias?
( correct answers ) Atrial flutter has the saw-tooth or picket-fence
appearance of waveforms before the QRS
When a junctional rhythm is viewed in lead II, where is the location of
the P wave on the ECG if atrial and ventricular depolarization occur
simultaneously? ( correct
answers ) during (within) the QRS complex
The usual rate of nonparoxysmal junctional tachycardia is: ( correct
answers ) 101- 140 bpm
ANSWERS 2025
A branch of the _______ supplies the right atrium and right ventricle
with blood
( correct answers ) right coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in ( correc
what action? answers ) Slowed conduction through the t
atrioventricular (AV) node
The contribution of blood that is added to the ventricles and results
from atrial contraction is called: ( correct answers ) atrial kick
Semilunar Valves include: ( correct answers ) pulmonary valve
and aortic valve
The left main coronary artery divides into the ( correct answers )
LAD and Cx branches
_____ cells are specialized cells of the electrical conduction system
responsible for the spontaneous generation and conduction of electrical
impulses. ( correct answers )
Pacemaker
The absolute refractory period beings with.... ( correct answers )
begins with the onset of the QRS complex and terminates at
approximately the apex of the T wave
T/F: The QT interval represents the time from initial depolarization of the
ventricles to the end of ventricular repolarization ( correct answers )
true
How do you determine whether the atrial rhythm on an ECG tracing
is regular or irregular? ( correct answers ) compare P-P intervals
Which ECG leads use two distinct electrodes, one of which is positive
and the other negative? ( correct answers ) leads I, II, and III
In sinus arrhythmia, a gradual decreasing of the heart rate is usually
associated with? ( correct answers ) expiration
An ECG rhythm strip shows a ventricular rate of 46 bpm, a regular
rhythm, a PR interval of 0.14 second, a QRS duration of 0.06 second, and
one upright P wave before each QRS. This rhythm is: ( correct
answers ) sinus bradycardia
, SA block is a disorder of ______, and sinus arrest is a disorder of impulse
_______.
( correct answers ) SA block is a disorder of conduction
Sinus arrest is a disorder of formation
Signs and symptoms experienced during a tachydysrhythmia are usually
primarily related to: ( correct answers ) decreased ventricular filling
time and stroke volume
Example that reflects ectopic (latent) pacemaker: ( correct
answers ) the AV junction and ventricles
A wandering atrial pacemaker rhythm with a ventricular rate of 60 to
100 bpm may also be referred to as: ( correct answers ) multiform
atrial rhythm
The most common type of supraventricular tachycardia (SVT) is?( correct
answers ) AVNRT-- AV nodal reentrant tachycardia
If the onset or end of paroxysmal atrial tachycardia or paroxysmal
supraventricular tachycardia (PVST) is not observed on the ECG, the
dysrhythmia is called: ( correct answers ) SVT
paroxysmal means sudden onset
Most common sustained dysrhythmia in adults? ( correct
answers ) AFib T/F: The difference between premature atrial
complexes (PACs) and premature
junctional complexes (PJCs) in leads II, III and aVF is a PAC typically has a
positive P wave before the QRS complex, whereas a P wave may or may
not be present in a PJC ( correct answers ) true
A Wolff-Parkinson-White (WPW) pattern is associated with a : ( correct
answers ) short PR interval, delta wave, and wide QRS complex
What is the main difference between atrial flutter and other atrial
dysrhythmias?
( correct answers ) Atrial flutter has the saw-tooth or picket-fence
appearance of waveforms before the QRS
When a junctional rhythm is viewed in lead II, where is the location of
the P wave on the ECG if atrial and ventricular depolarization occur
simultaneously? ( correct
answers ) during (within) the QRS complex
The usual rate of nonparoxysmal junctional tachycardia is: ( correct
answers ) 101- 140 bpm
