EKG Final Exam 2022 questions with answers (100% correct)
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EKG
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Oxford University (OX)
A branch of the _______ supplies the right atrium and right ventricle with blood Correct Answer: right
coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in what action? Correct Answer: Slowed
conduction through the atrioventricular (AV) node
The contribution of...
a branch of the supplies the right atrium and right ventricle with blood correct answer right coronary artery rca stimulation of parasympathetic nerve fibers typically results in what actio
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EKG Final Exam 2022 questions with answers (100% correct)
A branch of the _______ supplies the right atrium and right ventricle with blood Correct Answer: right
coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in what action? Correct Answer: Slowed
conduction through the atrioventricular (AV) node
The contribution of blood that is added to the ventricles and results from atrial contraction is called:
Correct Answer: atrial kick
Semilunar Valves include: Correct Answer: pulmonary valve and aortic valve
The left main coronary artery divides into the Correct Answer: LAD and Cx branches
_____ cells are specialized cells of the electrical conduction system responsible for the spontaneous
generation and conduction of electrical impulses. Correct Answer: Pacemaker
The absolute refractory period beings with.... Correct Answer: 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 Answer: true
How do you determine whether the atrial rhythm on an ECG tracing is regular or irregular? Correct
Answer: compare P-P intervals
Which ECG leads use two distinct electrodes, one of which is positive and the other negative? Correct
Answer: leads I, II, and III
In sinus arrhythmia, a gradual decreasing of the heart rate is usually associated with? Correct Answer:
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
Answer: sinus bradycardia
SA block is a disorder of ______, and sinus arrest is a disorder of impulse _______. Correct Answer: 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
Answer: decreased ventricular filling time and stroke volume
Example that reflects ectopic (latent) pacemaker: Correct Answer: 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 Answer: multiform atrial rhythm
The most common type of supraventricular tachycardia (SVT) is? Correct Answer: 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 Answer: SVT
paroxysmal means sudden onset
Most common sustained dysrhythmia in adults? Correct Answer: 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 Answer: true
A Wolff-Parkinson-White (WPW) pattern is associated with a : Correct Answer: short PR interval, delta
wave, and wide QRS complex
What is the main difference between atrial flutter and other atrial dysrhythmias? Correct Answer: 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 Answer: during (within) the QRS complex
The usual rate of nonparoxysmal junctional tachycardia is: Correct Answer: 101-140 bpm
Junctional (or ventricular) complexes may come early (before the next expected sinus beat) or late (after
the next expected sinus beat).
If the complex is early, it is called ________
If the complex is late, it is called _________ Correct Answer: early = premature complex
late = escape beat
Depending on the severity of the patient's signs and symptoms, management of slow rhythms may
require therapeutic intervention including: Correct Answer: administration of ATROPINE
Atropine speeds the heart rate up
The term for THREE or MORE premature ventricular complexes (PVCs) occurring in a row at a rate of
more than 100 bpm is: Correct Answer: A run of VT
PVCs that look ALIKE in the same lead and begin from the same anatomic site (i.e., focus) are called
_____________ PVCs Correct Answer: uniform
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